钙化合物对碱焙烧氧化锌矿的影响  

Influence of Calcium Compounds on NaOH Roasting Zinc Oxide Ore

作　　者：陈兵[1,2] 申晓毅[1] 顾惠敏[1] 邵鸿媚 翟玉春[1] 马培华[1] 

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

出　　处：《矿产综合利用》2016年第3期26-29,共4页Multipurpose Utilization of Mineral Resources

基　　金：国家自然科学基金资助项目(51204054);中央高校基本科研业务费专项资金资助(N110402012)

摘　　要：为了检验钙化合物的存在对氧化锌矿碱熔融焙烧过程的影响,选择了纯物质Zn CO_3、Si O_2、Pb O_2分别与Na OH反应,分析了焙烧熟料的物相结构。通过对氧化锌矿碱熔融焙烧熟料和焙烧熟料溶出渣的结构分析,得到了钙化合物在碱熔融焙烧反应中的物相结构,难溶的Ca_2Si O_4和Ca_2Pb O_4降低了硅和铅的提取率,而Na_2Zn Si O_4的存在降低了锌和硅的提取率。最后讨论了碱焙烧过程中Zn CO_3、Si O_2、Pb O_2和钙化合物发生的化学反应。To examine the influence of calcium compound on the NaOH fusion roasting zinc oxide ore, ZnCO3, SiO2 and PbO2 were selected to reacted with NaOH, respectively. And the phase structures of the obtained clinkers were examined. Through the phase analysis of the clinker obtained by roasting zinc oxide ore using NaOH and leaching residue,the phase structures of calcium compounds reacting with NaOH were obtained. The insoluble Ca2SiO4 and Ca2PbO4 decreased the extraction rates of Si and Pb,and the existence of Na2ZnSiO4 decreased extraction rates of Zn and Si. Finally, the chemical reactions of ZnCO3, SiO2, PbO2 and calcium compounds in NaOH roasting zinc ox- ide ore were discussed.

关 键 词：钙化合物 氧化锌矿 碱熔融焙烧 化学反应 

分 类 号：TD989[矿业工程—选矿] TF813[冶金工程—有色金属冶金]