Shanghai Daoqin Plastics Co., Ltd.

        随 plastics industrial development, and plastics waste growth, waste plastics recycled utilizing industry day 益兴起. due to plastics product types more, application areas 广泛, therefore in recycling process in, very more different types type and color plastics by mixed combined to 一起. different product types plastics property can and processing conditions is different, mixed combined rear for processing and application effect/influence non large, therefore in waste plastics recycling process in separation is can less step/link.

        一, separation 选 目

         recycling plastics market upper main/primary has large separation demand:

        1.剔 remove plastics in metal;

        2. for different color plastics classification;

        3.区 separation different types type plastics.

        二, separation methods

         currently, waste plastics separation usually separation is and machine separation type. separation main/primary selection 振动筛, 转鼓, magnetic force separation machine, force separation machine;材 material separation can using/adopting various separation equipment and plant/unit, density, electrical, temperature 差, outer 线, optical versus machine and X-射线 and other separation equipment.

        1. separation 选

        手工 separation is through will mixed in waste plastics 里 杂质, and different product types plastics separation 开. this type of methods 费时费 force, efficiency low lower, investment small, easy upper 手, as active. separation steps lower:

        ① remove metal and non metal 杂质, remove quality heavy decline waste plastics products.

        ②先按 products, film, bottle, 杯, material and other products classification, again according to identification method classification different plastics product types.

        ③ will upper classification waste plastics products again color deep shallow and quality separation 选.

        2. machine separation 选

         can through magnetic 选, density separation 选, separation 离, separation 离, separation 选, electrical separation 选, outer separation 选, versus separation and temperature separation and other methods separation 选. outer and versus separation 选, can optical separation method, is year technology development formed in waste plastics recycling recycled in new application.

        ① magnetic 选

         magnetic is utilizing magnetic separation iron type metal methods, main/primary is remove mixed waste plastics in iron and other metal 碎屑杂质, this fine iron easy use separation methods remove.

        ② density separation 选

         density separation is utilizing different plastics tool has different density this property 质进行 separation methods, specific methods is will mixed waste plastics certain types tool has density solvent liquid in, rear according to waste plastics in solvent liquid in 沉浮状态 进行 separation 选. density separation methods advantages is easy can 行, need selection made types or types solvent liquid can large amount separation 选, 而避免 烦琐 人工 separation 选; its disadvantages is has types type plastics density non 常接近, therefore, need obtain high pure degree separation material comparison difficult.

        3. light electrical separation 选(X 射线, light X射线 separation 离)

        该 method is utilizing different types type plastics for X射线 absorption rate different separation 离, 不接触, bad plastics products 本身, by testing material 边移动边 separation 离. according to function mechanism different, optical separation method can separation is X射线 separation and light X separation 离. X separation is will X射线转变 formed electrical 信号, 判断应 remove plastics products, use pressure shrink gas will its 吹落进行 separation 离. light X separation is 由照射 X射线 by testing material 发生 荧 light X线, separation light rear main/primary formed separation amount 判断.

        4. color color separation method

        此 methods is according to color color separation technology, is make by testing material color through 数 滤 color device rear, different degree formed electrical value 并以此 separation 组, color plant/unit and material separation plant/unit combined, optical plastics bottle and other color rear, 鼓风吹落 color bottle, method main applications color in plastics products.

        5. outer separation 选

        红 outer separation can separation is outer separation and outer separation 选. outer separation principle is utilizing outer 线照射 by separation material 时材质 呈现出 different absorption degree separation 选. outer separation can used for plastics products separation 拣.

        红 outer separation principle is material in 选定 红 outer long scope/range inner and can light lower different features material 体 识别. outer used for plastics separation 选, can separation types plastics, 包括PET, HDPE, LDPE, PVC, PS, PP,精准 rate can 达100%.

        6.常规风 force separation 选

        常规风 force separation is will powder plastics in separation plant/unit inner 喷射, from toward or toward 吹入, utilizing different plastics for gas retardant force and heavy combined force 差进行 separation methods. due to powder rear degree coarse fine effect/influence separation 选 效果, therefore method requirements powder rear degree coarse fine uniform, but also degree coarse fine uniform degree is effect/influence 风选效果 important factors. in addition method can used for separation plastics in mixed 入 石子 and and other, is for/regarding density and sheet/slice 形状不规则 plastics separation 离效果 relatively 差.

        7. force separation 选

        风 force separation is force separation 选 特殊 methods, its principle is utilizing 床面 振动 and upper rise gas gas make pellets density delamination. specific process is from has 孔 振动床 lower 边吹出 upper rise gas 流(流 speed 1.0m/s), density large or large pellets distribution in lower 层, density small or small pellets distribution in upper 层, in accelerated degree and 床底面 摩 scratch force function lower, lower heavy pellets toward 倾斜 振动床 upper 侧运动; versus 反, upper light pellets and lower heavy pellets between scratch force small, to 振动床 relatively low 一侧, from make to separation 选.

        8. electrical separation 选

        静 electrical separation is utilizing various plastics different scratch electrical property can separation methods. different plastics scratch belt/tape electrical property belt/tape electrical property can 决定. utilizing electrical separation 选, for/regarding multiple mixed in waste plastics need more separation 选, is through one-time setting electrical pressure can separation 选出一 types plastics.

        9. temperature separation 选

         temperature separation is utilizing plastics material for temperature degree property separation methods, has low temperature and high temperature different 途径.

         low temperature separation method is utilizing various plastics tool has different temperature degree separation methods.

         high temperature separation plastics in temperature degree lower 会发生团粒化, this is is plastics temperature degree rise high, tensile property can and elongation increase generate phenomenon, is different plastics 团粒化 property can different, utilizing features plastics separation 选. plastics 团粒化 features can classification lower:

        ① can low temperature 团粒化 plastics material 包括PE, PP and foaming PS and other.

        ② can low temperature powder plastics material has PVDC.

        ③ can high temperature 团粒化 plastics material 包括PET, hard 质PVC and aluminum film.

        ④ high temperature can 团粒化 plastics material has hot solid property plastics.

        三, inner main/primary separation equipment enterprise

        1.陶朗 separation technology (厦门) has company

        2.东莞阿莫斯特 environmental protection has company

        3. di separation technology (Shanghai) has company

        4. combined 肥泰禾 light electrical has company

        5. combined 肥美亚 light electrical technology corporation has company

        6. deep in micro light electrical has company

        7. deep 圳市普莱姆科技 has company