Advanced Plastic Recycling Granulation: Fasaha, Kayan aiki da Maganganun Extruder na Zhuoyue

A cikin zamanin haɓaka wayar da kan muhalli da tsauraran manufofin kiyaye albarkatu, Sake yin amfani da filastik ya zama muhimmiyar mayar da hankali ga masana'antu a duniya. Daga cikin fasahohin sake amfani da filastik daban-daban, Sharar gida robobi sake amfani da granulation tsaye a matsayin m, m, da kuma hanyar da za a iya amfani da tattalin arziki wanda ke canza kayan filastik da aka jefar zuwa granules da za a sake amfani da su. Ana iya ƙara sarrafa waɗannan granules ɗin da aka sake sarrafa su zuwa sabbin samfuran filastik, tare da matakan aiki kwatankwacin waɗanda aka yi daga kayan budurwa, don haka fahimtar gaskiyar yaduwar albarkatu da rage nauyin muhalli da sharar filastik ke haifarwa.

Zhuoyue, babban masana'anta na extrusion kayan aiki, ya himmatu wajen samar da ingantattun layukan samar da granulation na sake yin amfani da su don kowane nau'in robobin sharar gida, ciki har da PP (Polypropylene), PE (Polyethylene), LDPE (Polyethylene Low-Density), PET (Polyethylene terphthalate), PS (Polystyrene), ABS (Acrylonitrile Butadiene Styrene), da sauransu. Tare da fasahar extrusion ci gaba da ƙwarewa mai zurfi a cikin sake yin amfani da filastik, An kera masu fitar da na'urorin na Zhuoyue don saduwa da ƙalubale na musamman na ƙyallen filastik, isar da inganci, makamashi-ceton, da ingantattun mafita ga masana'antun da ke aikin sake yin amfani da filastik.

1. Bayanin Sharar Filastik Recycling Granulation

Gwargwadon sake amfani da robobi wani tsari ne na musamman wanda ke canza nau'ikan robobin sharar gida-kamar kwalabe na filastik., fina-finai, kwantena, tarkace daga layin samarwa, da sharar filastik bayan-mabukaci-zuwa uniform, granules filastik masu inganci ta hanyar jerin jiyya na inji da na thermal. Wadannan granules da aka sake yin fa'ida, kuma aka sani da regranulates ko reprocessed filastik pellets, za a iya amfani da shi kai tsaye a cikin gyaran allura, extrusion, busa gyare-gyare, da sauran hanyoyin sarrafa filastik don samar da sabbin kayayyaki, kama daga kayan tattarawa da kayan gini zuwa sassa na mota da abubuwan yau da kullun.

Babban darajar granulation na sake amfani da robobi ya ta'allaka ne cikin ikonsa na magance kalubale biyu na zubar da sharar filastik da karancin albarkatu.. Sabanin hanyoyin zubar da robo na gargajiya na gargajiya kamar zubar da ƙasa da ƙonewa, wanda ke haifar da mummunar haɗarin muhalli, sake amfani da granulation yana samun nasarar sake amfani da albarkatu na gaskiya:

Kare Muhalli: Cike da sharar robobi ya mamaye albarkatun ƙasa masu mahimmanci kuma yana iya haifar da gurɓatar ƙasa da ruwan ƙasa, kamar yadda robobi ba su da lalacewa kuma suna iya sakin abubuwa masu cutarwa cikin lokaci. Konawa, a wannan bangaren, yana fitar da iskar gas mai guba (kamar dioxins da carbon monoxide) da particulate kwayoyin halitta, yana ba da gudummawa ga gurbatar iska da dumamar yanayi. Sake yin amfani da granulation yana rage adadin dattin filastik da ke shiga wuraren shara da incinerators, rage gurbacewar muhalli da hayakin carbon.
Kiyaye albarkatu: Ana samun robobi daga burbushin man da ba za a iya sabuntawa ba (kamar mai da iskar gas). Ta hanyar sake yin amfani da robobin sharar gida cikin granules da za a sake amfani da su, Bukatar kayan filastik budurwa ta ragu, adana albarkatun burbushin halittu masu mahimmanci da rage yawan kuzarin da ke da alaƙa da samar da filastik budurwa. An kiyasta cewa sake yin amfani da tan ɗaya na robobi zai iya ajiyewa har zuwa 7.4 ganga na mai da rage hayakin carbon ta 1.5 ton.
Amfanin Tattalin Arziki: Granules robobin da aka sake fa'ida sun fi arha fiye da kayan filastik budurwa, yana ba da ɗimbin tanadin farashi ga masana'antun. Domin sake amfani da masana'antu, tsarin tattarawa, sarrafawa, da robobin sharar gida na iya haifar da riba mai tsayi, samar da sabbin damammaki na tattalin arziki da ayyukan yi. Bugu da kari, ƙasashe da yankuna da yawa suna ba da abubuwan ƙarfafawa (kamar tallafi da karya haraji) don kamfanonin sake amfani da filastik, kara inganta tattalin arzikin sake amfani da granulation.

Duk da haka, ingancin granules na filastik da aka sake yin fa'ida da aikin samfuran sake fa'ida na ƙarshe sun dogara sosai kan tsarin granulation da kayan aikin da aka yi amfani da su.. Abubuwa irin su nau'i da tsabtar filastik filastik, ingancin rarrabawa da tsaftacewa, yanayin zafi da sarrafa ƙarfi yayin extrusion, da kuma zane na extruder duk suna da tasiri mai mahimmanci akan ingancin samfurin ƙarshe. Saboda haka, tasowa mai sauƙi, dace, m, makamashi-ceton, m muhalli, kuma tsarin granulation mai dacewa da tattalin arziki ya zama abin da aka fi mayar da hankali kan bincike da haɓakawa a cikin masana'antar sake yin amfani da filastik.

1.1 Mahimman Halayen Filayen Filastik Da Aka Sake Fa'ida

Ayyukan granules na filastik da aka sake yin fa'ida suna da alaƙa sosai da nau'in filastik na sharar gida, matakin gurbatawa, da kuma tsarin granulation. Gabaɗaya, granules da aka sake yin fa'ida mai inganci yakamata su mallaki halaye masu zuwa:

Girman Barbashi Uniform: Matsakaicin girman barbashi yana tabbatar da bargaciyar ciyarwa yayin aiki na gaba (kamar gyaran allura da extrusion), inganta daidaituwa da ingancin samfurin ƙarshe. Girman barbashi na granules da aka sake yin fa'ida shine yawanci tsakanin 2mm da 5mm, dangane da bukatun aikace-aikacen.
Ƙarƙashin Ƙarfafawa: Gurɓata kamar datti, kura, karfe gutsuttsura, takarda, da sauran kayan da ba na filastik ba na iya tasiri sosai ga aikin granules da aka sake yin fa'ida da samfurin ƙarshe. Saboda haka, rarrabuwa mai tasiri da tsaftacewa na filastik sharar gida yana da mahimmanci don tabbatar da ƙananan matakan gurɓatawa.
Kyakkyawan Filastik da Tsarin aiki: Ya kamata granules da aka sake yin fa'ida su sami kyawawan kaddarorin narkewa da gudana, ba da izinin sarrafa sauƙi cikin sabbin samfura ba tare da shafar ingancin sarrafawa ko ingancin samfur ba. Wannan yana buƙatar daidaitaccen sarrafa zafin jiki da ƙimar ƙarfi yayin aikin granulation don guje wa lalatawar tsarin ƙwayoyin filastik..
Kayayyakin Makanikai Tsayayye: Ƙarfin ƙarfi, elongation a lokacin hutu, tasiri ƙarfi, da sauran kayan aikin injiniya na granules da aka sake yin fa'ida yakamata su kasance kusa da na kayan budurwa, tabbatar da cewa samfuran sake fa'ida na ƙarshe sun cika ka'idojin aikin da ake buƙata.
Ƙananan Abun Danshi: Babban abun ciki na danshi a cikin granules da aka sake yin fa'ida zai iya haifar da lahani kamar kumfa da fasa a cikin samfurin ƙarshe yayin sarrafawa.. Saboda haka, Ana buƙatar matakan bushewa sau da yawa yayin aikin granulation don rage abun ciki na danshi zuwa matakin yarda (yawanci kasa 0.5%).

1.2 Nau'o'in Nau'in Filastik na Sharar gida don granulation

Kusan duk nau'ikan robobi na thermoplastic ana iya sake yin fa'ida da granulated, yayin da thermosetting robobi (wanda ba za a iya narke da sake sarrafa su ba) ba su dace da sake yin amfani da granulation ba. Mafi yawan nau'ikan robobin sharar da ake amfani da su wajen sake yin amfani da granulation sun haɗa da:

PP (Polypropylene): thermoplastic da aka yi amfani da shi sosai tare da juriya mai kyau na sinadarai, inji Properties, da kuma aiwatarwa. Sharar gida na gama gari PP ya haɗa da buckets na filastik, kwantena, iyalai, da tarkacen samarwa. Ana amfani da granules na PP da aka sake yin fa'ida don samar da bututun filastik, sassa na mota, da kayan tattarawa.
PE (Polyethylene): Raba zuwa LDPE (Polyethylene Low-Density) da HDPE (High-Density Polyethylene). Ana yawan amfani da LDPE a cikin fina-finan filastik, jakunkuna, da kwalabe, yayin da ake amfani da HDPE a cikin ganga, bututu, da kwantena. PE granules da aka sake yin fa'ida sun dace don samar da fina-finai na filastik, bututu, da samfuran alluran da aka ƙera.
PET (Polyethylene terphthalate): A bayyane, m robobi da aka fi amfani da shi a cikin kwalabe na abin sha, kayan abinci, da samfuran fiber. Ana amfani da granules na PET da aka sake yin fa'ida a cikin samar da zaruruwan polyester, kwalabe filastik, da kayan tattarawa.
PS (Polystyrene): Akwai shi cikin tsauri (kamar kofunan kumfa, kwantena abinci, da kayan wasa na filastik) da kumfa (EPS, fadada polystyrene) siffofin. Ana iya amfani da granules na PS da aka sake yin fa'ida don samar da kayan wasan motsa jiki na filastik, kayan ado, da samfuran kumfa.
ABS (Acrylonitrile Butadiene Styrene): Babban aikin filastik tare da ƙarfin tasiri mai kyau, taurin kai, da juriya na zafi. Sharar gida na gama gari ABS ya haɗa da bawoyin filastik na samfuran lantarki, sassa na mota, da kayan wasan yara. Ana amfani da granules na ABS da aka sake yin fa'ida don samar da harsashi na samfurin lantarki, sassa na mota, da abubuwan da aka yi musu allura.

Layukan samar da granulation na Zhuoyue an ƙera su don sarrafa duk robobin da aka ambata a sama., tare da gyare-gyaren kayan aiki na musamman don saduwa da ƙayyadaddun bukatun aiki na nau'in filastik daban-daban.

2. Tsarin sake amfani da Filastik ɗin Sharar gida

Tsarin sake amfani da robobin sharar gida ya ƙunshi matakai da yawa: tarkacen filastik tara da rarrabawa, tsaftacewa, murkushewa, bushewa, extrusion granulation, sanyaya, da yankan. Kowane mataki yana taka muhimmiyar rawa wajen tabbatar da ingancin granules na ƙarshe da aka sake sarrafa su. Ƙayyadaddun sigogi na tsari na iya bambanta dangane da nau'in filastik na sharar gida, matakin gurbatawa, da ingancin da ake so na granules da aka sake yin fa'ida.

2.1 Tari da Rarraba

Mataki na farko a cikin aikin sake yin amfani da granulation shine tarawa da rarraba robobin datti. Ana tattara robobin sharar gida daga wurare daban-daban, ciki har da gidaje, masana'antu, cibiyoyin kasuwanci, da kuma samar da Lines. Saboda nau'ikan robobin sharar gida da kuma kasancewar gurɓatattun abubuwa, rarrabuwa yana da mahimmanci don tabbatar da ingancin granules da aka sake yin fa'ida.

Ana iya yin rarrabuwar kawuna da hannu ko na inji. Rarraba da hannu ya dace da ƙananan ayyukan sake yin amfani da su kuma ya haɗa da raba nau'ikan robobi daban-daban, cire abubuwan da ba na filastik ba (kamar karfe, takarda, gilashin, da kwayoyin sharar gida), da kuma rarraba robobi ta launi da inganci. Rarraba injina, a wannan bangaren, ya fi dacewa kuma ya dace da manyan ayyuka, ta amfani da fasahohi irin su rabuwa da yawa (nitse-tasowa rabuwa), maganadisu rabuwa, electrostatic rabuwa, da kuma rarraba infrared don raba nau'ikan filastik daban-daban da kuma kawar da gurɓataccen abu.

Ingantacciyar rarrabuwa yana da mahimmanci saboda haɗa nau'ikan robobi daban-daban na iya haifar da raguwa mai yawa a cikin ayyukan granules da aka sake yin fa'ida.. Misali, hadawa PP da PET na iya haifar da rabuwar lokaci yayin extrusion, yana haifar da ƙarancin filastik da kayan aikin injiniya na granules.

2.2 Tsaftacewa

Bayan an daidaita, ana tsaftace robobin sharar gida don kawar da gurɓataccen ƙasa kamar datti, kura, mai, maiko, ragowar abinci, da lakabi. Tsarin tsaftacewa yawanci ya ƙunshi matakai da yawa:

Pre-tsaftacewa: Cire manyan gurɓatattun abubuwa (kamar lakabi, iyalai, da guntuwar karfe) da datti mai laushi ta hanyar gogewa, busa, ko karban hannu.
Wanka: Jiƙa robobin sharar gida a cikin maganin tsaftacewa (yawanci ruwa da wanka ko alkali) don cire mai, maiko, da ragowar abinci. Ana iya amfani da tashin hankali ko tsaftacewar ultrasonic don haɓaka tasirin tsaftacewa.
Kurkura: Tsaftace robobin da aka tsabtace tare da ruwa mai tsafta don cire duk wani bayani da ya rage na tsaftacewa da gurɓatawa.
Dewatering: Cire ruwa mai yawa daga robobi da aka tsabtace ta amfani da centrifuges, dewatering inji, ko bushewar iska don rage danshi da sauƙaƙe sarrafawa na gaba.

Tasirin tsaftacewa kai tsaye yana rinjayar ingancin granules da aka sake yin fa'ida. Rashin isasshen tsaftacewa zai iya haifar da gurɓataccen granules, shafi su processability da inji Properties. Misali, ragowar mai da mai na iya haifar da rashin daidaituwa tsakanin kwayoyin filastik yayin extrusion, yana haifar da ƙarancin ƙarfi na granules.

2.3 Murkushewa

Bayan tsaftacewa da dewatering, robobin sharar gida suna murƙushe su cikin ƙananan guda (flakes ko gutsuttsura) amfani da crusher. Murkushewa yana taimakawa wajen ƙara sararin saman filastik, sauƙaƙe narkewa da haɗuwa yayin aikin extrusion. Hakanan yana taimakawa wajen cire duk wasu ƙananan gurɓatattun abubuwa waɗanda za'a iya sanyawa cikin filastik.

Nau'in crusher da aka yi amfani da shi ya dogara da nau'i da nau'in filastik na sharar gida. Nau'o'in crushers na yau da kullun sun haɗa da muƙamuƙi, guduma crushers, ruwa crushers, da granulators. Don robobi masu sassauƙa (kamar fina-finan robobi da jakunkuna), Yawanci ana amfani da burbushin ruwa, yayin da ga m robobi (kamar kwalabe da kwantena), masu murƙushe guduma ko muƙamuƙi sun fi dacewa. Girman ɓangarorin filastik da aka niƙa yawanci tsakanin 5mm da 20mm, dangane da nau'in extruder da aka yi amfani da shi da girman granule da ake so.

2.4 bushewa

Ko da bayan dewatering, Yankakken robobin na iya ƙunsar wani ɗanɗano kaɗan. Babban abun ciki na danshi zai iya haifar da lahani kamar kumfa, fasa, da rashin kyawun yanayin ƙasa a cikin granules da aka sake yin fa'ida yayin extrusion. Saboda haka, Matakin bushewa ya zama dole don rage danshi na ɓangarorin filastik da aka murƙushe zuwa matakin da aka yarda (yawanci kasa 0.5%).

Hanyoyin bushewa na gama gari sun haɗa da bushewar iska mai zafi, injin bushewa, da bushewar infrared. Bushewar iska mai zafi ita ce hanyar da aka fi amfani da ita, wanda ya hada da wucewar iska mai zafi (a zazzabi na 80-120 ° C) ta cikin dakakken robobin don yashe danshi. Lokacin bushewa da zafin jiki sun dogara da nau'in filastik da abun ciki na farko. Misali, PET ya fi kula da danshi kuma yana buƙatar haɓakar yanayin bushewa (120-160°C) da tsawon lokacin bushewa don tabbatar da cikakken cire danshi.

2.5 Extrusion Granulation

Extrusion granulation is the core step in the waste plastic recycling granulation process. It involves melting, hadawa, and homogenizing the dried crushed plastic pieces using an extruder, then extruding the molten plastic through a die to form continuous strands, which are subsequently cooled and cut into uniform granules.

The extruder is the key equipment in this step, and its performance directly determines the quality and efficiency of the granulation process. There are two main types of extruders used in waste plastic recycling granulation: twin-screw extruders and single-screw extruders. Each type has its own advantages and is suitable for different types of waste plastics, as detailed in Section 3.

During extrusion granulation, several key process parameters need to be precisely controlled:

Zazzabi: The temperature of the extruder barrel and die is critical for melting the plastic and ensuring good mixing and homogenization. Different types of plastics have different melting points, and the barrel temperature is typically set 10-30°C above the melting point of the plastic to ensure complete melting. Misali, the barrel temperature for PP is usually 170-220°C, while for PET it is 260-280°C. Excessively high temperatures can cause thermal degradation of the plastic, leading to a reduction in the mechanical properties of the recycled granules, while excessively low temperatures can result in incomplete melting and poor mixing.
Rage Rage: The shear rate is determined by the screw speed and the screw design. A suitable shear rate helps to homogenize the molten plastic, disperse any remaining contaminants, da kuma inganta filastik na granules. Duk da haka, matsanancin girman juzu'i na iya haifar da lalacewar injina na tsarin kwayoyin filastik, yana haifar da raguwar aiki.
Gudun dunƙulewa: Gudun dunƙule yana rinjayar abin da ake fitarwa, narkewa yadda ya dace, da hadawa inganci. Matsakaicin saurin dunƙulewa na iya ƙara yawan abin da ake samarwa amma yana iya rage narkewar haɓakar haɗewa, yayin da ƙananan saurin gudu na iya inganta haɓakar haɓaka amma rage yawan kayan aiki. Madaidaicin saurin dunƙulewa ya dogara da nau'in filastik, nau'in extruder, da ingancin granule da ake so.
Matsi na Extrusion: An ƙaddara matsa lamba na extrusion ta hanyar ƙirar mutu, dunƙule gudun, da danko na abu. Tsayayyen extrusion matsa lamba yana tabbatar da samuwar iri ɗaya da daidaitaccen girman granule. Matsi mai yawa na iya haifar da toshewar mutuwa, yayin da ƙananan matsa lamba na iya haifar da rashin daidaituwa.

2.6 Sanyi da Yanke

Bayan extrusion ta hanyar mutuwa, ana kwantar da igiyoyin filastik masu ci gaba don ƙarfafa su. Ana iya yin sanyaya ta amfani da sanyaya iska ko sanyaya ruwa. Ruwan sanyaya ruwa ya fi dacewa kuma ana amfani dashi sosai a cikin manyan ayyukan granulation, shigar da wuce igiyoyin ta cikin tankin ruwa ko fesa ruwa don sanyaya su cikin sauri zuwa zafin jiki. Sanyaya iska ya dace da ƙananan ayyuka ko don robobi waɗanda ke da damuwa da ruwa (kamar wasu robobin injiniya).

Da zarar an kwantar da igiyoyin kuma an ƙarfafa su, Ana yanka su cikin granules iri ɗaya ta amfani da pelletizer. Ana shigar da pelletizer yawanci a wurin fita daga tsarin sanyaya kuma ana iya daidaita shi don sarrafa tsawon granules. (yawanci tsakanin 2mm da 5mm). Common types of pelletizers include strand pelletizers, water ring pelletizers, and underwater pelletizers. Strand pelletizers are the most widely used type for waste plastic recycling granulation, as they are simple in structure, easy to operate, and suitable for most types of plastics.

2.7 Screening and Packaging

After cutting, the recycled granules are screened using a vibrating screen to remove any oversized or undersized granules, ensuring uniform particle size. The screened granules are then dried again (if necessary) to remove any moisture absorbed during cooling, then packaged into bags or bulk containers for storage and transportation.

Packaging is an important step to prevent contamination and moisture absorption of the recycled granules. The packaging materials should be moisture-proof and clean, and the granules should be stored in a dry, ventilated, and clean warehouse to maintain their quality.

3. Extruder Selection for Waste Plastic Recycling Granulation

As mentioned earlier, the extruder is the core equipment in the waste plastic recycling granulation process. The selection of the right extruder depends on the type of waste plastic, the desired granule quality, the production volume, and the budget. There are two main types of extruders used in waste plastic recycling granulation: twin-screw extruders and single-screw extruders. Each type has its own unique advantages and is suitable for different applications.

3.1 Twin-screw Extruders for Recycling Granulation

Twin-screw extruders are widely used in the recycling granulation of engineering plastics and plastics with high contamination levels, kamar ABS, PS, da PET. They consist of two parallel screws that rotate in the same direction (tare-juyawa) ko sabanin kwatance (mai jujjuyawa) within a barrel. Co-rotating twin-screw extruders are more commonly used in plastic recycling due to their superior mixing and conveying capabilities.

3.1.1 Key Advantages of Twin-screw Extruders

Easy Material Feeding: Twin-screw extruders have a strong conveying capacity, which allows for easy feeding of crushed plastic pieces, even if they are irregular in shape or have a certain amount of contaminants. This reduces the need for pre-processing of the material and improves production efficiency.
Short Material Residence Time: The residence time of the material in the twin-screw extruder is short (yawanci 1-5 mintuna) compared to single-screw extruders. This helps to avoid thermal degradation of the plastic, especially for heat-sensitive plastics such as PET and ABS, which can degrade easily when exposed to high temperatures for a long time. Short residence time also reduces energy consumption and improves production efficiency.
Excellent Venting Effect: Twin-screw extruders are equipped with venting ports that allow for the removal of moisture, volatile gases, and air from the molten plastic. The meshing part of the screws provides effective mixing, and the self-cleaning function of the venting section ensures that the material can achieve complete surface renewal, allowing for efficient removal of volatile substances. This helps to improve the quality of the recycled granules by reducing the number of bubbles and defects.
Superior Mixing and Plasticizing Effect: The co-rotating twin-screw extruders have strong shear and mixing capabilities, which can effectively homogenize the molten plastic, disperse contaminants, and mix additives (irin su stabilizers, antioxidants, da masu launi) uniformly. This ensures that the recycled granules have consistent properties and good processability.
Low Specific Power Consumption: Despite their high performance, twin-screw extruders have low specific power consumption (power consumption per unit output), making them more energy-efficient compared to single-screw extruders for certain applications. This helps to reduce operating costs for recycling enterprises.
High Volume Power: Twin-screw extruders have a high volume power (power per unit volume of the barrel), which means they can process a large amount of material in a small space. This makes them suitable for large-scale production operations with limited space.

3.1.2 Suitable Applications for Twin-screw Extruders

Twin-screw extruders are particularly suitable for the recycling granulation of the following plastics:

ABS: A high-performance plastic that is widely used in electronic products, sassa na mota, da kayan wasan yara. ABS is sensitive to heat and requires short residence time and good mixing, making twin-screw extruders the ideal choice.
PS: Both rigid and foam PS can be recycled using twin-screw extruders. The superior mixing capabilities of twin-screw extruders help to disperse any remaining foam cells and contaminants, ensuring good granule quality.
PET: PET is highly sensitive to moisture and heat, and requires precise temperature control and short residence time. Twin-screw extruders with good venting and temperature control capabilities are suitable for PET recycling granulation.
Injiniyan Filastik: Other engineering plastics such as PC (Polycarbonate), PA (Polyamide), and POM (Polyoxymethylene) can also be recycled using twin-screw extruders, thanks to their superior mixing and plasticizing capabilities.

3.2 Single-screw Extruders for Recycling Granulation

Single-screw extruders are simpler in structure, lower in cost, and easier to maintain compared to twin-screw extruders. They consist of a single screw that rotates within a barrel, conveying and melting the material through friction and shear between the screw and the barrel. Single-screw extruders are widely used in the recycling granulation of general-purpose plastics such as PP, PE, da LDPE.

3.2.1 Key Advantages of Single-screw Extruders

Short Screw Length and Residence Time: Single-screw extruders typically have a shorter screw length compared to twin-screw extruders, resulting in shorter material residence time. This helps to avoid thermal degradation of the plastic, especially for soft plastics such as PE and LDPE, which have lower melting points and are prone to degradation.
Mai Tasiri: Waste plastic recycling often involves materials with high levels of contaminants, which can cause significant wear and tear on the extruder screw and barrel. Single-screw extruders are simpler in structure and use less expensive materials, making them more cost-effective to replace and maintain compared to twin-screw extruders. This is particularly important for small and medium-sized recycling enterprises with limited budgets.
Suitable for Soft Plastics: The material conveying efficiency of single-screw extruders depends on the friction performance of the solid material and the viscosity of the melt. Soft plastics such as PP, PE, and LDPE have good friction performance and low melt viscosity, making them ideal for processing with single-screw extruders. These plastics can be conveyed and melted efficiently, ensuring good granule quality.
Simple Operation and Maintenance: Single-screw extruders have a simple structure, with fewer moving parts, making them easy to operate and maintain. This reduces the need for skilled operators and lowers maintenance costs, which is beneficial for small-scale recycling operations.

3.2.2 Suitable Applications for Single-screw Extruders

Single-screw extruders are particularly suitable for the recycling granulation of the following plastics:

PP (Polypropylene): PP is a soft plastic with good friction performance and processability, making it ideal for processing with single-screw extruders. Recycled PP granules produced using single-screw extruders have good mechanical properties and can be used in a wide range of applications.
PE (Polyethylene): Both LDPE and HDPE are suitable for processing with single-screw extruders. LDPE, musamman, is a soft plastic with low melt viscosity, which can be conveyed and melted efficiently by single-screw extruders. Recycled PE granules are widely used in the production of plastic films and pipes.
LDPE (Polyethylene Low-Density): LDPE is commonly used in plastic films and bags, which are easy to crush and process. Single-screw extruders are ideal for LDPE recycling granulation, as they can handle the soft material efficiently and cost-effectively.

3.3 Key Factors for Extruder Selection

When selecting an extruder for waste plastic recycling granulation, the following key factors should be considered:

Type of Waste Plastic: As discussed earlier, twin-screw extruders are suitable for engineering plastics (ABS, PS, PET) and plastics with high contamination levels, while single-screw extruders are suitable for general-purpose plastics (PP, PE, LDPE).
Girman samarwa: For large-scale production (more than 500kg/h), twin-screw extruders are more suitable due to their high throughput and efficiency. For small-scale production (less than 200kg/h), single-screw extruders are more cost-effective and practical.
Granule Quality Requirements: If high-quality recycled granules with uniform properties and low contamination are required (such as for automotive parts and electronic products), twin-screw extruders are the better choice due to their superior mixing and plasticizing capabilities. For general-purpose applications (such as plastic films and low-grade injection-molded products), single-screw extruders can meet the requirements at a lower cost.
Kasafin kudi: Twin-screw extruders are more expensive than single-screw extruders, both in terms of initial investment and maintenance costs. Saboda haka, enterprises with limited budgets may prefer single-screw extruders for general-purpose plastic recycling.
Amfanin Makamashi: For large-scale production, energy consumption is an important consideration. Twin-screw extruders have lower specific power consumption, making them more energy-efficient for high-volume operations. Single-screw extruders may be more energy-efficient for small-scale operations due to their simpler structure.

4. Zhuoyue Extruder Series for Waste Plastic Recycling Granulation

Zhuoyue offers a comprehensive range of extruders specifically designed for waste plastic recycling granulation, including twin-screw extruders and single-screw extruders. The extruder series are tailored to meet the specific needs of different types of waste plastics, production volumes, and granule quality requirements, combining high performance, inganci, makamashi-ceton, da tsada-tasiri. The main extruder series include ZTE series and HTE series, each with unique features and advantages to suit different application scenarios.

4.1 Core Technical Features of Zhuoyue Extruders

All Zhuoyue extruders for waste plastic recycling granulation share a set of core technical features that make them ideal for the harsh conditions of plastic recycling, such as high contamination levels, irregular material shapes, and varying material properties:

Robust Construction: Zhuoyue extruders are built with high-quality materials (such as alloy steel for screws and barrels) to withstand the wear and tear caused by contaminants in waste plastics. The screws and barrels are treated with special surface treatments (such as nitriding and hard chrome plating) to improve their wear resistance and service life.
Madaidaicin Kula da Zazzabi: The extruders are equipped with advanced temperature control systems, including heating zones and cooling zones, to ensure precise control of the barrel and die temperature. This helps to avoid thermal degradation of the plastic and ensure complete melting and mixing.
Efficient Conveying and Mixing: The screw designs are optimized for waste plastic recycling, with enhanced conveying capacity and mixing capabilities. Twin-screw extruders feature co-rotating screws with optimized flight profiles to ensure superior mixing and homogenization, while single-screw extruders have specially designed screws to improve conveying efficiency for soft plastics.
Excellent Venting Performance: Twin-screw extruders are equipped with multiple venting ports to remove moisture, volatile gases, and air from the molten plastic, ensuring high-quality granules with minimal defects. The self-cleaning function of the venting section ensures efficient venting even with contaminated materials.
Zane-zane na Ajiye Makamashi: Zhuoyue extruders adopt energy-saving technologies such as variable frequency drives (VFD) and optimized motor configurations to reduce energy consumption. This helps to lower operating costs for recycling enterprises.
Easy Operation and Maintenance: The extruders are designed with user-friendly interfaces and simple structures, making them easy to operate and maintain. The screws and barrels can be easily disassembled for cleaning and replacement, rage raguwa.
Customizable Configurations: Zhuoyue extruders can be customized with different screw lengths, diameters, and configurations to meet the specific needs of different types of waste plastics and production volumes. Misali, extruders for PET recycling can be equipped with special drying systems and venting ports to ensure complete moisture removal.

4.2 ZTE Series Extruders

The ZTE series is Zhuoyue’s cost-effective extruder series, designed for small and medium-sized recycling enterprises and general-purpose waste plastic recycling granulation. This series offers excellent cost-performance ratio, with parameters designed to suit most common waste plastics, ciki har da PP, PE, LDPE, and general-purpose ABS and PS. The ZTE series includes both single-screw and twin-screw extruders, providing flexible options for different applications.

4.2.1 Key Features of ZTE Series Extruders

Excellent Cost-Performance Ratio: The ZTE series is designed to provide reliable performance at a competitive price, making it the ideal choice for enterprises with limited budgets or small-scale production needs. The initial investment and maintenance costs are significantly lower than high-end extruders, while still meeting the basic requirements of waste plastic recycling granulation.
Versatile Parameter Design: The parameters of the ZTE series are designed to suit most common waste plastics, ciki har da PP, PE, LDPE, ABS, da PS. This versatility allows enterprises to process multiple types of waste plastics with a single extruder, improving production flexibility and reducing equipment investment.
Reliable Operation: The ZTE series adopts a reliable standard transmission system and simple structure, ensuring stable operation even in harsh recycling environments. The screws and barrels are designed to handle contaminants in waste plastics, reducing the risk of equipment failure.
Low Maintenance Costs: The simple structure of the ZTE series makes it easy to maintain, with fewer moving parts and lower maintenance requirements. The screws and barrels can be easily replaced when worn, reducing downtime and maintenance costs.
Suitable for Small to Medium-Scale Production: The ZTE series is available in a range of sizes, with throughputs ranging from 50kg/h to 500kg/h, making it suitable for small to medium-scale recycling operations.

4.2.2 ZTE Series Model Parameters

The ZTE series includes both single-screw and twin-screw extruders, with parameters tailored to different types of waste plastics. The following table details the parameters of the ZTE series twin-screw extruders, suitable for ABS, PS, and PET recycling granulation:

Samfura	Takamaiman karfin juyi (N.m/Cm³)	Babban ikon mota (Kw)	Saurin fitarwa (rpm)	Ramin zurfin rami D0/Di	Suitable Plastics
25	6	7.5	600	1.55	PS, Small-scale ABS
35	6	18.5	600	1.55	PS, ABS, LDPE
50	6	55	600	1.55/1.68	ABS, PS, PET (Small-scale)
65	6	110	600	1.55/1.68	ABS, PS, PET
75	6	160	600	1.55/1.68	ABS, PS, PET, PP
95	6	300	600	1.55/1.68	ABS, PS, PET, PP, PE

The ZTE series single-screw extruders are mainly used for PP, PE, and LDPE recycling granulation, with parameters optimized for soft plastics. The screws are designed with enhanced conveying capacity to handle the irregular shapes of crushed plastic films and bottles, ensuring efficient production.

4.2.3 Application Scenarios for ZTE Series

The ZTE series is ideal for the following application scenarios:

Small and medium-sized recycling enterprises with limited budgets.
General-purpose waste plastic recycling, ciki har da PP, PE, LDPE, ABS, da PS.
Production of general-purpose recycled granules for plastic films, low-grade injection-molded products, and construction components.
Enterprises new to plastic recycling, thanks to the easy operation and low maintenance requirements of the ZTE series.

4.3 HTE Series Extruders

The HTE series is Zhuoyue’s mid-range extruder series, designed to bridge the gap between cost-effective extruders (such as ZTE series) and high-end extruders. This series combines high performance with high cost-effectiveness, delivering higher output while reducing energy consumption. The HTE series includes both twin-screw and single-screw extruders, suitable for medium to large-scale waste plastic recycling granulation.

4.3.1 Key Features of HTE Series Extruders

Balanced Performance and Cost-Effectiveness: The HTE series offers higher performance than the ZTE series, including better mixing capabilities, mafi girma kayan aiki, and more precise temperature control, while maintaining a competitive price. This makes it suitable for enterprises that require higher granule quality but do not want to invest in high-end extruders.
Energy-Saving and High Output: The HTE series is optimized for energy efficiency, with advanced motor configurations and variable frequency drives (VFD) to reduce energy consumption. A lokaci guda, the extruders have higher throughput, allowing for medium to large-scale production (500kg/h to 1000kg/h) with lower energy costs.
Reasonable Torque and Power Configuration: The HTE series has a reasonable torque and power configuration, ensuring stable and efficient production even when processing plastics with high contamination levels or varying properties. The twin-screw extruders have higher torque density, making them suitable for processing engineering plastics such as ABS and PET, while the single-screw extruders are optimized for soft plastics such as PP and PE.
Dual-Speed Options for Partial Models: Some models of the HTE series are equipped with dual-speed options, allowing for flexible adjustment of the screw speed to suit different types of plastics and production requirements. This expands the application range of the extruders, making them suitable for multiple plastic types.
Enhanced Wear Resistance: The screws and barrels of the HTE series are made of high-quality alloy steel and treated with advanced surface treatments to improve their wear resistance, ensuring a long service life even in harsh recycling environments.
Advanced Control System: The HTE series is equipped with advanced PLC control systems, allowing for automatic control of temperature, dunƙule gudun, matsa lamba extrusion, and other key parameters. This improves the stability and consistency of the granulation process, ensuring uniform granule quality.

4.3.2 HTE Series Model Parameters

The HTE series twin-screw extruders are suitable for ABS, PS, PET, PP, PE, and LDPE recycling granulation, with parameters optimized for high performance and efficiency. The following table details the specific parameters:

Samfura	Takamaiman karfin juyi (N.m/Cm³)	Babban ikon mota (Kw)	Saurin fitarwa (rpm)	Ramin zurfin rami D0/Di	Suitable Plastics	Kayan aiki (kg/h)
25	9	11	600	1.55	PS, ABS, LDPE	50-100
35	9	30	600	1.55	PS, ABS, PE, LDPE	100-200
35	9	45	1000	1.55	PS, ABS, PE, LDPE	200-300
50	9	75	600	1.55/1.68	ABS, PS, PET, PP	300-500
50	9	110	900	1.55/1.68	ABS, PS, PET, PP	500-700
65	9	160	600	1.55/1.68	ABS, PS, PET, PP, PE	700-900
65	9	220	900	1.55/1.68	ABS, PS, PET, PP, PE	900-1200
75	9	250	600	1.55/1.68	ABS, PS, PET, PP, PE, LDPE	1200-1500
75	9	315	900	1.55/1.68	ABS, PS, PET, PP, PE, LDPE	1500-1800
95	9	400	600	1.55/1.68	All common waste plastics	1800-2200

The HTE series single-screw extruders are optimized for PP, PE, and LDPE recycling granulation, with higher throughput and better energy efficiency compared to the ZTE series. They are suitable for medium to large-scale production of recycled granules for plastic films, bututu, da samfuran alluran da aka ƙera.

4.3.3 Application Scenarios for HTE Series

The HTE series is ideal for the following application scenarios:

Medium to large-scale recycling enterprises with higher granule quality requirements.
Recycling of multiple types of waste plastics, ciki har da PP, PE, LDPE, ABS, PS, da PET.
Production of high-quality recycled granules for automotive parts, electronic product accessories, and high-grade injection-molded products.
Enterprises that focus on energy efficiency and cost reduction, thanks to the energy-saving design of the HTE series.

4.4 Customized Solutions from Zhuoyue

In addition to the standard ZTE and HTE series, Zhuoyue also provides customized extruder solutions for special waste plastic recycling needs. Misali:

Customized extruders for high-contamination waste plastics, equipped with enhanced filtering systems to remove contaminants.
Extruders for heat-sensitive plastics such as PET and PC, equipped with special drying systems and low-shear screws to avoid thermal degradation.
Complete recycling granulation production lines, including crushers, dryers, extruders, masu pelletizers, and screening equipment, to provide a one-stop solution for enterprises.

Zhuoyue’s professional R&D team works closely with customers to understand their specific needs and provide tailored solutions that meet their production requirements and budget.

5. Best Practices for Waste Plastic Recycling Granulation with Zhuoyue Extruders

To ensure the best performance and granule quality when using Zhuoyue extruders for waste plastic recycling granulation, the following best practices are recommended:

5.1 Proper Sorting and Cleaning

Effective sorting and cleaning are essential to reduce the wear and tear on the extruder and ensure high-quality granules. Separate different types of plastics to avoid mixing, and remove non-plastic contaminants (kamar karfe, takarda, and glass) as much as possible. Thoroughly clean the waste plastics to remove oil, maiko, da ragowar abinci, which can affect the mixing and plasticizing effect.

5.2 Optimal Drying

Ensure that the crushed plastic pieces are properly dried to reduce the moisture content to below 0.5%. For moisture-sensitive plastics such as PET, use high-temperature drying (120-160°C) for a sufficient period to ensure complete moisture removal. This helps to avoid bubbles and defects in the recycled granules.

5.3 Precise Process Parameter Control

Adjust the extruder parameters (such as temperature, dunƙule gudun, da matsa lamba extrusion) according to the type of waste plastic. Follow the recommended parameter settings provided by Zhuoyue, and make adjustments based on the actual material properties and granule quality. Avoid excessively high temperatures or shear rates, which can cause plastic degradation.

5.4 Kulawa na yau da kullun

Regularly inspect and maintain the extruder to ensure its normal operation. Clean the screws and barrels regularly to remove any accumulated material or contaminants. Check the wear of the screws and barrels, and replace them when necessary. Lubricate the moving parts regularly to reduce friction and extend the service life of the extruder.

5.5 Use of Additives (If Necessary)

For waste plastics with severe degradation or poor performance, consider adding additives such as stabilizers, antioxidants, and plasticizers to improve the quality of the recycled granules. Consult Zhuoyue’s technical team to select the appropriate additives and dosage.

6. Kammalawa

Waste plastic recycling granulation is a critical technology for realizing resource circulation and environmental protection, offering significant economic, muhalli, and social benefits. The quality and efficiency of the granulation process depend largely on the extruder used, and selecting the right extruder is essential for the success of a plastic recycling enterprise.

Zhuoyue’s ZTE series and HTE series extruders are specifically designed for waste plastic recycling granulation, combining high performance, inganci, makamashi-ceton, da tsada-tasiri. The ZTE series provides a cost-effective solution for small and medium-sized enterprises and general-purpose plastic recycling, while the HTE series offers balanced performance and cost-effectiveness for medium to large-scale production with higher quality requirements. With robust construction, madaidaicin sarrafa zafin jiki, superior mixing capabilities, and customizable configurations, Zhuoyue extruders can handle all types of waste plastics, from PP and PE to ABS and PET, delivering high-quality recycled granules for a wide range of applications.

As a leader in extrusion technology, Zhuoyue is committed to providing advanced, abin dogara, and cost-effective solutions for the plastic recycling industry. With professional R&D, high-quality products, and comprehensive after-sales service, Zhuoyue helps enterprises unlock the full potential of waste plastic recycling, contributing to a more sustainable and environmentally friendly future.

Teburin Abubuwan Ciki