废旧锌锰干电池有害元素的去除

采用火法和湿法两种方法对电芯进行处理,去除了电芯中Cl、Zn等不利于高炉生产的元素·结果表明:在试验温度范围内,火法处理可以去除部分Cl,但不能去除Zn;温度越高,去除Cl的效果越好;615K时火法处理可去除37%Cl·湿法处理的效果好于火法,可去除大部分Cl、Zn·在318K条件下处理15min,可去除85%Cl、30%Zn·水温与处理时间对湿法处理效果影响较小,易应用于实际生产·经湿法处理后电芯符合高炉生产的要求,可作为高炉喷煤用添加剂·

Elimination of Nocuous Elements in Waste Zn-Mn Dry Battery

The pyrogenic process and wet process were used to eliminate the nocuous elements such as Cl, Zn which have negative effect on blast furnace operation in battery recycle. Results show that in the range of experiment, pyrogenic process can eliminate most of Cl but take no effect on Zn. Higher removal efficiency can be got at higher temperature and Cl was removed by 37% at 615 K. The removal effect of wet process is better than the pyrogenic process. The wet process can remove Cl by 85% and Zn by 30% in 15 min at 318 K. In the wet process, temperature and time have little effect on the results so it is convenient for industry application. Dry batteries treated by the wet process can meet the request standard of blast furnace operation so that they can be used as additives for pulverized coal injection.