加压氰化提取金银的试验研究  

The Experimental Research on Pressure Cyanidation of Extracting Gold and Silver

作　　者：李学强 徐忠敏 冯金敏 崔秋华 

机构地区：[1]招金矿业股份有限公司金翅岭金矿,山东招远265400

出　　处：《黄金科学技术》2009年第5期49-52,共4页Gold Science and Technology

摘　　要：针对常规氰化法提取金银工艺具有浸出时间长,药剂消耗大等缺点,在浸出环节上采用高压浸出装置,对浮选后得到的精矿进行加压氰化提取金、银试验,采用部分正交析因法对加压氰化进行条件优化试验研究,并结合生产实践对常规氰化和加压氰化进行对比分析和评价。由试验结果可知,当加压温度为55℃、压力为0.5 MPa、矿浆浓度32%、加压时间90 min、氰化钠用量为17 mL、氧化钙用量为2 g时,可以获得98.13%的氰化浸出回收率,比常规氰化回收率高出0.07个百分点,说明该方法在生产中使用是可行的。According to the disadvantages of conventional cyanide leaching method extracting gold and silver, such as long-time leaching and large consumption of reagent, we adopted a high pressure leaching instrument in leaching process, then take the pressure leaching experimental of extracting gold and silver for the concentrate ore after flotation, and make condition optimization research for pressure leaching using parts of orthogonal factorial method. In the end, combined with production practice ,we comparatively analysis the conventional and pressure cyanidation.

关 键 词：金银 加压氰化 常规氰化 正交析因法 优化试验 

分 类 号：TF83[冶金工程—有色金属冶金]