硫氰酸铵法提金工艺研究  

Technical Study on Gold Extraction by Ammonium Thiocyanate

作　　者：宋岷蔚[1] 刘菁[1] 俞海平[1] 

机构地区：[1]成都理工大学材料与化学化工学院,四川成都610059

出　　处：《矿冶工程》2013年第2期84-87,共4页Mining and Metallurgical Engineering

基　　金：国家自然科学基金重点项目(50974025);国家公益性行业科研专项项目(201011005-5);四川省教委重点基金资助项目(09ZA012)

摘　　要：以四川某硫化物包裹型金矿石精金砂为原料,对比研究了氰化法和硫氰酸铵法的提金效果,考察了氧化剂Fe3+和MnO2在硫氰酸铵浸金工艺中的作用和特点,并对氰化法和硫氰酸铵法的浸出机理进行了初步探讨和分析。结果表明,硫氰酸铵法比氰化法有更好的提金效率;用Fe3+作氧化剂的硫氰酸铵浸金法提金效率可达96%。With some sulfide-locked gold fine ore from Sichuan Province as raw material, comparative tests were conduced for gold extraction by cyanide process and by using ammonium thiocyanate respectively. The effects and characteristics of oxidants Fe^3＋ and MnO2 in gold leaching process with ammonium thiocyanate were explored. The gold leaching mechanism by cyanide process and by using ammonium thicyanate was also preliminarily investigated and analyzed. Results show that gold extraction by using ammonium thiocyanate, compared with gold cyanidation, can lead to a better result with gold leaching rate up to 96% using Fe ^3 ＋ as oxidant.

关 键 词：难浸金矿 提金 氰化法 硫氰酸铵法 氧化剂 

分 类 号：TF111[冶金工程—冶金物理化学]