THE DISPOSAL OF ARSENIC - AN UNAVOIDABLE STAGE IN THE RECYCLING OF WASTES

被引：1
|
作者：
GABALLAH, I
MENAD, N
GARCIACARCEDO, F
SIGUIN, D
FERREIRA, S
机构：
[1] ENVIRONM & MINERALURGIE LAB,F-54501 VANDOEUVRE NANCY,FRANCE
[2] CSIC,CTR NACL INVEST MET,E-28040 MADRID,SPAIN
来源：
REVISTA DE METALURGIA | 1995年 / 31卷 / 03期
关键词：
THERMAL TREATMENTS; PHYSICOCHEMICAL TRANSFORMATION; HYDROMETALLURGICAL WASTES; ARSENIC; MERCURY; METALLIC VALUES;
D O I：
10.3989/revmetalm.1995.v31.i3.960
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The effects of several thermal treatments at different temperatures and in different atmospheres on the physico-chemical transformation of hydrometallurgical processes wastes containing toxic elements such as arsenic, mercury, cadmium and selenium, are described. The extraction efficiency of those toxic elements related to the thermal treatments are also studied paying special attention to the disposal of arsenic from these wastes. Even though with some of these treatments it is possible to eliminate about 97% of the toxic alements and at the same time to multiply by a factor of 2 the concentration of the metallic values, it seems that the decontamination of the samples, in controlled atmospheres, needs several sucessive thermal treatments.
引用
收藏
页码：143 / 149
页数：7
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