氯气浸出硫渣制备四氯化锡  

Preparation of stannic chloride with leaching sulphide slag by chlorine

作　　者：陈绍春 

机构地区：[1]云南锡业集团(控股)有限责任公司研究设计院,云南个旧661000

出　　处：《无机盐工业》2011年第7期39-41,共3页Inorganic Chemicals Industry

摘　　要：四氯化锡的生产是用精锡与氯气反应得到的。为了降低工业四氯化锡的生产成本,采用硫渣（粗锡精炼产出的一种废渣）与氯气反应,制备四氯化锡。研究了氯气浸出反应温度,反应时间,液固比,搅拌速度等因素对硫渣中锡浸出率的影响。实验结果表明,氯气能够与硫渣中的锡反应,生成四氯化锡,硫渣中锡的浸出率可以达到90%以上。最佳浸出条件：四氯化锡与硫渣的初始液固质量比为2∶1,反应温度为80~90℃,反应时间为6 h,搅拌速度为100r/min。浸出液经过精馏,脱除三氯化砷、三氯化锑等杂质,实验产出的四氯化锡产品的质量达到用精锡生产的四氯化锡产品的质量标准要求。Stannic chloride is produced in the reaction of refined tin and chlorine.In order to reduce industrial production costs of stannic chloride,reaction of sulphide slag（a kind of waste slag which produced from crude tin refining） and chlorine was made to produce stannic chloride.Influences of factors,such as reaction temperature,reaction time,liquid/solid ratio,and stirring speed,on tin leaching rate in sulphide slag were studied.Experimental results indicated that chlorine could react with tin in sulphide slag and could produce stannic chloride,and the leaching rate of tin reached over 90%.Optimum process conditions for leaching were as follows：initial liquid/solid mass ratio of stannic chloride to sulphide slag was 2∶ 1,reaction temperature was at 80~90 ℃,reaction time was 6 h,and stirring speed was 100 r/min.Impurities in leaching solution,such as AsCl3 and SbCl3,were removed by distillation;the quality of experimental stannic chloride product met the quality standards of industrial stannic chloride product which produced from refined tin.

关 键 词：四氯化锡 硫渣 氯气浸出 精馏脱杂 

分 类 号：TQ134.32[化学工程—无机化工]