碱性硫化物浸出含锑金精矿中金的动力学研究  

Study on Gold Leaching Kinetics from Sb-bearing Gold Concentrate with Alkaline Sulfide

作　　者：靳冉公 路冰川 王世福 孙豪 JIN Ran-gong;LU Bing-chuan;WANG Shi-fu;SUN Hao(BGRIMM Technology Group,Beijing 100160,China;Zhaojin Jinhe Technology Limited Co.,Zhaoyuan 265400,Shandong,China;Gansu Zhaojin Precious Metal Limited Co.,Lintao 730500,Gansu,China)

机构地区：[1]北京矿冶科技集团有限公司,北京100160 [2]招远市招金金合科技有限公司,山东招远265400 [3]甘肃招金贵金属冶炼有限公司,甘肃临洮730500

出　　处：《有色金属（冶炼部分）》2019年第11期51-54,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家高技术研究发展计划（863计划）项目（2011AA06A104）;北京矿冶科技集团青年科技创新基金项目（QC-201727）

摘　　要：分别在20~70℃、硫化钠浓度20~80g/L范围内对含锑难冶炼金矿碱性湿法脱锑过程中金的浸出动力学进行研究。结果表明:在该范围内碱性硫化钠浸出锑金矿,金的表观活化能Ea=10.948kJ/mol,表观活化能较小,表明在考察范围内,金浸出主要受反应物扩散过程控制;在碱性硫化钠浸金过程中,仅从表观速率来看该反应未达到平衡时,硫化钠在溶解金的反应中级数为3.07。Leaching kinetics of gold from refractory antimony-bearing gold ores with alkaline sulfide under the condition of 20~70℃ and sodium sulphide concentration of 20~80g/L was studied.The results show that apparent activation energy for gold leaching with sodium sulfide is Ea=10.948kJ/mol within the scope.Lower value of Eashows that gold leaching is controlled by diffusion of reactants.During gold leaching with sodium sulfide,when leaching reaction does not reach equilibrium only from perspective of apparent rate,reaction series of sodium sulfide in gold dissolution is 3.07.

关 键 词：含锑金精矿 浸出动力学 表观活化能 反应级数 

分 类 号：TF811[冶金工程—有色金属冶金]