Fundamental aspects of recycling of nickel-cadmium batteries through vacuum distillation

被引:28
作者
Espinosa, DCR [1 ]
Tenório, JAS [1 ]
机构
[1] Univ Sao Paulo, Dept Met & Mat Sci, Polytech Sch, BR-05508900 Sao Paulo, Brazil
关键词
recycling; batteries; NiCd;
D O I
10.1016/j.jpowsour.2004.03.082
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In spite of the existence of several NiCd batteries treatment processes around the world, little is known about the fundamental aspects of this technology. The objective of this research is to study the most important technological variables of NiCd batteries recycling by vacuum distillation. Laboratory equipment was set up to study vacuum thermal processing of milled batteries. During the tests, the total pressure was maintained at 0.1 mbar while temperatures varied from 700 to 1100 degreesC. Results obtained show that the distillation process is possible at temperatures above 700 degreesC. If temperature is raised to the range of 900-1100 degreesC, treatment time is reduced to less than 2 h. At temperatures higher than 900 degreesC the recovery of Cd contained in the batteries reached 99.9%. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码:320 / 326
页数:7
相关论文
共 5 条
[1]   Recycling of batteries:: a review of current processes and technologies [J].
Bernardes, AM ;
Espinosa, DCR ;
Tenório, JAS .
JOURNAL OF POWER SOURCES, 2004, 130 (1-2) :291-298
[2]   Collection and recycling of portable batteries:: a worldwide overview compared to the Brazilian situation [J].
Bernardes, AM ;
Espinosa, DCR ;
Tenório, JAS .
JOURNAL OF POWER SOURCES, 2003, 124 (02) :586-592
[3]  
ESPINOSA DCR, 2001, P TMS ANN M NEW ORL, P173
[4]  
KUBASCHEWSKI O, 1979, METALLURICAL THERMOC, P211
[5]   New flowsheet for the recovery of cadmium, cobalt and nickel from spent Ni-Cd batteries by solvent extraction [J].
Nogueira, CA ;
Delmas, F .
HYDROMETALLURGY, 1999, 52 (03) :267-287