Environmentally friendly treatment of waste magnetic tape by a mechanochemical method and its recycling

被引：0

作者：

Tanaka, Y

Saeki, S

Zhang, QW

Saito, F

机构：

[1] Sony Corp, Micro Syst Network Co, Sendai Technol Ctr, Mat Solut Dev,Dept Recording Media Co, Tagajo, Miyagi 9850842, Japan

[2] Tohoku Univ, Sch Engn, Dept Chem Engn, Aoba Ku, Sendai, Miyagi 980, Japan

[3] Tohoku Univ, IMRAM, Aoba Ku, Sendai, Miyagi 980, Japan

来源：

KAGAKU KOGAKU RONBUNSHU | 2005年 / 31卷 / 01期

关键词：

magnetic recording tape; recycling; Co recovery; dechlorination; hydroxyapatite;

D O I：

10.1252/kakoronbunshu.31.25

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A novel mechanochemical (MC) method was examined for dechlorinating and recycling waste recording media tape. In this treatment, the tape was ground with CaO powder to decompose the constituent PVC. The ground sample was then washed with water to dissolve soluble chloride compounds formed during the MC treatment and filtered. The filtrated contained mainly calcium ions (Ca2+) besides the metals such as Co and Fe derived from the recording media, and thus it can be added to liquid containing phosphate ions (PO43-) to synthesize hydroxyapatite. The solid residue of filtration can be used for thermal recycling, because it does not contain any chlorine, and it has almost the same calorific value as RDF (refuse-derived fuel). Thus, the proposed MC method would be suitable for environmentally friendly treatment of waste recording media and their recycling.

引用

页码：25 / 30

页数：6

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