矿产保护与利用
礦產保護與利用
광산보호여이용
CONSERVATION AND UTILIZATION OF MINERAL RESOURCES
2014年
5期
34-38
,共5页
隔膜电积%槽电压%电流密度%电流效率%铋
隔膜電積%槽電壓%電流密度%電流效率%鉍
격막전적%조전압%전류밀도%전류효솔%필
diaphragm electrolysis%cell voltage%current density%current efficiency%bismuth
介绍了一种回收铋的清洁湿法冶金新工艺，运用隔膜电积法从盐酸BiCl 3溶液中回收铋，并考察了电流密度、温度、HCl、Bi3＋和NaOH的浓度对电积的影响。结果表明：在电流密度150 A／m2、温度45～55℃、3．5 mol／L HCl、110 g／L Bi3＋、15 g／L NaOH的最佳条件下，阳极NaOH反应生成NaClO3，Bi3＋在阴极上沉积得到致密金属铋，电流效率最高可达到98．82％，阴极铋纯度为99．80％。电积后将阳极和阴极电积液返回循环利用，实现了物料的闭路循环。
介紹瞭一種迴收鉍的清潔濕法冶金新工藝，運用隔膜電積法從鹽痠BiCl 3溶液中迴收鉍，併攷察瞭電流密度、溫度、HCl、Bi3＋和NaOH的濃度對電積的影響。結果錶明：在電流密度150 A／m2、溫度45～55℃、3．5 mol／L HCl、110 g／L Bi3＋、15 g／L NaOH的最佳條件下，暘極NaOH反應生成NaClO3，Bi3＋在陰極上沉積得到緻密金屬鉍，電流效率最高可達到98．82％，陰極鉍純度為99．80％。電積後將暘極和陰極電積液返迴循環利用，實現瞭物料的閉路循環。
개소료일충회수필적청길습법야금신공예，운용격막전적법종염산BiCl 3용액중회수필，병고찰료전류밀도、온도、HCl、Bi3＋화NaOH적농도대전적적영향。결과표명：재전류밀도150 A／m2、온도45～55℃、3．5 mol／L HCl、110 g／L Bi3＋、15 g／L NaOH적최가조건하，양겁NaOH반응생성NaClO3，Bi3＋재음겁상침적득도치밀금속필，전류효솔최고가체도98．82％，음겁필순도위99．80％。전적후장양겁화음겁전적액반회순배이용，실현료물료적폐로순배。
This paper introduces a new clean hydrometallurgy technology of recovery bismuth from hydrochloric BiCl 3 solution by electrodeposition .Effects of current density , solution temperature , concentration of HCl , Bi3+and NaOH parameter on diaphragm were investigated .The experiments results show that , in the optimum conditions of current density 150 A/m2, temperature 45~55℃, 3.5 mol/L HCl, 110 g/L Bi 3+and 15 g/L NaOH.NaOH could transform into NaClO 3 through re-action in anode , bismuth could be obtained in cathode , current efficiency could reach a maximum of 98 .82 %, and the purity of cathodes bismuth was 99 .8%.The electric fluid of anode and cath-ode could be recycled , and which achieves closed circulation of materials .
