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金属矿山 ›› 2015, Vol. 44 ›› Issue (10): 178-184.

• 综合利用 • 上一篇    下一篇

沉淀法回收氧化酸浸—络合法浸出液中的锑和铜

杨慧芬1,2,张莹莹1,2,王传龙1,2,谭海伟1,2,孟家乐1,2   

  1. 1.北京科技大学土木与环境工程学院,北京 100083;2.金属矿山高效开采及安全教育部重点实验室,北京100083
  • 出版日期:2015-10-15 发布日期:2015-11-20
  • 基金资助:

    基金项目 国家高技术研究发展计划(863计划)项目(编号:2012AA062406)。

Recovery of Antimony and Copper by Fractional Precipitation from Leachate on Oxidation Acid Leaching-complex Method

Yang Huifen1,2, Zhang Yingying1,2,Wang Chuanlong1,2,Tan Haiwei1,2,Meng Jiale1,2   

  1. 1.School of Civil and Environmental Engineering,University of Science and Technology Beijing,Beijing 100083,China;2.Key Laboratory of High-efficient Mining and Safety of Metal Mines,Ministry of Education,Beijing 100083,China
  • Online:2015-10-15 Published:2015-11-20

摘要: 广西河池某冶炼厂氧化酸浸—络合法浸出获得的含锑、铜浸出液中锑、铜含量分别为538.51 mg/L、395.91 mg/L。对该浸出液进行水解沉淀法回收锑,沉锑残液Na2S沉淀法回收铜的试验研究,结果表明:在搅拌强度为150 r/min、反应温度为56 ℃、反应时间为20 min、反应终了pH=3.15条件下水解沉锑,可获得锑品位、沉淀率分别为10.35%、98.23%的沉锑产品;沉锑残液在Na2S添加量为2.5 g/L、搅拌强度为150 r/min、反应温度为50 ℃条件下反应10 min,反应完全后静置20 min进行过滤,可获得铜品位、沉淀率分别为36.92%、98.38%的沉铜产品。试验结果证明分步沉淀法是回收该浸出液中锑、铜的有效方法。

关键词: 浸出液, 水解沉淀回收锑, Na2S沉淀回收铜, Sb(OH)3, CuS

Abstract: There is 538.51 mg/L Sb and 395.91 mg/L Cu in a leachate from a smelting plant in Hechi,Guangxi Province.Antimony recovery by hydrolysis precipitation method,copper recovery by Na2S precipitation from residual liquid from antimony precipitation on the leachate experiment results showed that antimony hydrolysis precipitation at the stirring speed of 150 r/min,reaction at 56 ℃for 20 min,final pH=3.15,precipitation antimony products with antimony grade and precipitation rate of 10.35%,98.23% is obtained.Residual liquid from antimony precipitation with Na2S dosage of 2.5 g/L,stirring speed of 150 r/min,reaction at 50 ℃for 10 min,stewing for 20 min and then enduring filtration,precipitation copper products with copper grade and precipitation rate of 36.92%,98.38% is obtained.The tests proved that fractional precipitation is a feasible method to recycle antimony,copper from the leachate.

Key words: Leachate, Antimony recovery by hydrolysis precipitation, Copper recovery by Na2S precipitation,Sb(OH)3, CuS