溶气浮选法分离废旧ABS / PS塑料

doi:10.19491/j.issn.1001-9278.2009.04.021

中国塑料 ›› 2009, Vol. 23 ›› Issue (04): 83-87 .DOI: 10.19491/j.issn.1001-9278.2009.04.021

溶气浮选法分离废旧ABS / PS塑料

白洋王晖陈晓磊黄宝张黎

中南大学化学化工学院化工冶金所中南大学化学化工学院

收稿日期:2008-11-21 修回日期:1900-01-01 出版日期:2009-04-26 发布日期:2009-04-26

Separation of Waste Plastics ABS and PS by Dissolved-air Flotation

BAI Yang Hui WANG

Received:2008-11-21 Revised:1900-01-01 Online:2009-04-26 Published:2009-04-26
Contact: Hui WANG

摘要/Abstract

摘要： 以分离废旧ABS/PS塑料为目标，在实验室特制的溶气浮选柱中考查了润湿剂、起泡剂、调整时间、浮选时间等因素对废旧塑料浮选行为的影响，获得了最佳浮选分离工艺条件。实验表明，采用溶气浮选技术，以单宁酸为润湿剂，在其浓度25mg/L，起泡剂松油醇浓度5mg/L、调整时间15min、浮选时间15min的条件下，可以成功地实现废旧ABS和PS塑料的浮选分离，上浮产物PS的纯度90.12%，回收率97.45%，下沉产物ABS的纯度97.24%，回收率89.38%。研究结果同时表明，要有效地克服混合塑料给浮选过程带来的不利影响，塑料颗粒间相互作用的系统研究将是该领域的重要课题。

关键词: 塑料浮选, 溶气浮选, 废旧塑料, 润湿剂

Abstract: The aim of this study was to separate waste plastics ABS and PS. The effects of parameters such as wetting agent, froth agent, conditioning time, flotation time etc. on flotation behaviors of ABS and PS were investigated in an especially designed dissolved-air flotation column and the optimized separation conditions were gained. The results showed when using 25mg/L wetting agent tannic acid, 5mg/L froth agent terpineol and conditioning time 15min, flotation time 15min, mixtures of waste plastics ABS and PS were separated successfully by dissolved-air flotation technique and the results revealed that the purity and recovery of PS in the floated was 90.12% and 97.45% respectively, the purity and recovery of ABS in the sank was 97.24% and 89.38% respectively. The study also showed that to overcome the adverse effects of mixed plastics in flotation process, further systematic research on interaction between plastic particles was important in this field.

Key words: plastics flotation, dissolved-air flotation (DAF), waste plastics, wetting agent

白洋王晖陈晓磊黄宝张黎. 溶气浮选法分离废旧ABS / PS塑料[J]. 中国塑料, 2009, 23(04): 83-87 .

BAI Yang Hui WANG . Separation of Waste Plastics ABS and PS by Dissolved-air Flotation[J]. China Plastics, 2009, 23(04): 83-87 .

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溶气浮选法分离废旧ABS / PS塑料

Separation of Waste Plastics ABS and PS by Dissolved-air Flotation

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