碱焙烧法由氧化锌矿提取ZnO  

Extraction of ZnO from zinc oxide ore by alkali roasting method

作　　者：陈兵[1,2] 申晓毅[1] 顾惠敏[1] 孙毅[1] 李德官[1] 翟玉春[1] 马培华[3] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819 [2]盘锦市环境科学研究院科技研究室,辽宁盘锦124010 [3]中国科学院青海盐湖研究所,青海西宁810008

出　　处：《化工学报》2012年第2期658-661,共4页CIESC Journal

基　　金：国家重点基础研究发展计划项目(2007CB613603)~~

摘　　要：引言 锌矿主要分为硫化锌矿和氧化锌矿,目前锌冶炼主要以硫化锌矿为主,随着硫化锌矿的日益枯竭,氧化锌矿的研究和利用显得尤为重要。氧化锌矿是锌的次生矿,是硫化锌矿长期风化的产物,是重要的含锌矿物,Zinc oxide ore was treated by roasting with NaOH.ZnO,SiO2 and PbO reacted with alkali first and then went into solution after digestion.In this paper,orthogonal experiment method was used to optimize conditions for extraction of ZnO from zinc oxide ore by roasting with alkali.The optimized conditions were mass ratio of ore and alkali 1∶6,holding temperature 400℃,holding time 4 h.Under these conditions,the extraction rate of ZnO was 82.4%.The main components of zinc extracted slag were stishovite,and Na2ZnSiO4,whose presence impeded further extraction of ZnO.The morphology of slag was irregular,and the particle size was non-uniform.

关 键 词：氧化锌矿 氢氧化钠焙烧 提氧化锌 

分 类 号：TF813[冶金工程—有色金属冶金]