山东农业科学Issue(10)：54-59,6.DOI:10.14083/j.issn.1001-4942.2015.10.014
无机酸对金尾矿中多种重金属的去除效果研究
Removal Effect of Inorganic Acid on Multiple Heavy Metals from Gold Tailings
摘要
Abstract
The oscillated test was conducted to study the removal effect of different concentrations, liquid -solid ratios,leaching time and leaching number of nitric acid and hydrochloric acid respectively on heavy metals in the gold tailings.Then the contents of total heavy metals and their speciation were analyzed. The results showed that the optimal leaching conditions were nitric acid of 1 mol /L and hydrochloric acid of 2 mol /L,liquid -solid ratio of 1 5∶1 ,leaching 6 h and 1 time.Under these conditions,the removal rate of ni-tric acid to Cu,As,Ni,Sr,Co and Pb were 39.80%,27.77%,24.57%,65.80%,1 7.1 7% and 26.87%respectively,and the removal rates of hydrochloric acid to the above elements were 43.29%,42.23%, 28.57%,56.67%,1 8.48% and 31 .54% respectively.The results of total heavy metals and their speciation analysis showed that the contents of As,Sr and Ni in gold tailings were higher with the concentrations of 1 930.25,31 5.25 and 40.90 mg/kg;the removal effects of nitric acid and hydrochloric acid on heavy metals with the forms of high locomotivity and bio -availability were higher,but that on residual form of heavy metals was not obvious.关键词
无机酸/重金属/金尾矿/去除效果/形态/淋洗Key words
Inorganic acid/Heavy metal/Gold tailings/Removal effect/Form/Leaching分类
矿业与冶金引用本文复制引用
韩彦山,卢新卫,武星..无机酸对金尾矿中多种重金属的去除效果研究[J].山东农业科学,2015,(10):54-59,6.基金项目
陕西省科技攻关项目 （）
