硫化铅精矿低温熔盐一步炼铅实验研究  

One-step Lead Extraction from Lead Sulfide Concentrate in Molten Salt Medium at Low Temperature

作　　者：薛浩天 巢世刚 李云 陈永明 XUE Hao-tian;CHAO Shi-gang;LI Yun;CHEN Yong-ming(Qinghai Provincial Research and Design Academy of Environmental Science,Xining 810007,Qinghai,China;School of Metallurgy and Environment,Central South University,Changsha 410083,Hunan,China;School of Chemical Engineering,Aalto University,Espoo 02150,Finland)

机构地区：[1]青海省环境科学研究设计院,青海西宁810007 [2]中南大学冶金与环境学院,湖南长沙410083 [3]阿尔托大学化学工程学院,芬兰艾斯堡02150

出　　处：《矿冶工程》2018年第4期76-79,共4页Mining and Metallurgical Engineering

基　　金：国家自然科学基金(51234009)

摘　　要：采用还原造锍熔炼法从硫化铅精矿中低温、一步回收铅,考察了黄铁矿烧渣加入量、熔盐组成及用量对铅直收率及铁、铜分配行为的影响,证实了该技术路线的可行性。合理控制熔炼条件,铅直收率最高可达94.32%,粗铅纯度98.32%。铜和银主要分布在铁锍及粗铅中,铁及其它伴生元素主要分布在铁锍及炉渣中。A technical route ol reduction-matting smelting lor one-step lead recovery from lead sulfide concentrate at a low temperature was adopted.Effects ol pyrite cinder addition,dosage and compositions ol molten salt on Pb direct recovery,Fe and Cu distribution behaviors were investigated.The feasibility ol this technical route was also confirmed.Proper control ol smelting conditions resulted in the Pb direct recovery as high as 9 4.3 2%,and the Pb purity up to 98.32%.It is lound that Cu and Ag dominantly exist in the iron matte and crude lead,while the Fe and its associated mineral elements are mainly distributed in the iron matte and slag.

关 键 词：硫化铅精矿 低温造锍熔炼 分配行为 铅 黄铁矿烧渣 固硫剂 

分 类 号：TF111[冶金工程—冶金物理化学]