包钢尾矿重金属溶解浸出实验研究  

EXPERIMENTAL STUDY ON HEAVY METAL LEACHING FROM TAILINGS OF BAO-GANG

作　　者：施和平[1] 阿娟[1] 刘惠民[1] 张琳[1] 

机构地区：[1]内蒙古农业大学理学院,呼和浩特010018

出　　处：《内蒙古农业大学学报（自然科学版）》2012年第2期238-240,共3页Journal of Inner Mongolia Agricultural University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(项目号21167010);内蒙古自然科学基金资助项目(项目号2011BS0205);内蒙古农业大学博士科研启动基金资助项目(批准号BJ09-37)

摘　　要：本文研究了包钢尾矿中重金属(pb、Cd、Zn)在不同条件下的溶解浸出特性,研究表明混合搅拌3h可使体系达到溶解平衡;浸出液的重金属离子浓度随液固比(L/S)的减少而逐渐增加;重金属的溶解浸出率随浸取液pH值的降低而增加,pH在2～6时浸出率变化不大,当pH为1时,尾矿中重金属的浸出率显著增加;浸取剂中H+对各元素浸出的影响程度分别为Pb>Cd>>Zn;浸出率也随浸取温度的升高而增大。In this paper,the leaching characteristics of heavy metal from tailings of Bao-Gang were investigated.The results showed the leaching system to reach dynamic equilibrium while the stirring time was 3 hour.The concentrations of leaching increased with the L/S ratio decreased.When H＋ concentration increased,the leaching ratio of heavy metals increased,the leaching ratio of heavy metals increased slowly when pH=2~6,but it increased obviously when pH=1,the degree order of was Pb〉Cd〉〉Zn with pH decreased.The leaching concentrations of heavy metals increased also with the temperature rising.

关 键 词：尾矿 重金属 浸出 

分 类 号：X708[环境科学与工程—环境工程]