循环流态化焙烧在金精矿两段焙烧中的设计与应用  

Design and Application of Circulating Fluid Bed Technology on Two-stage Roasting Process of Gold Concentrate

作　　者：李云[1] 张立征 魏晋 王云[1] 刘洪晓 

机构地区：[1]北京矿冶研究总院,北京100160 [2]招金矿业股份有限公司,山东招远265400 [3]招远市招金金合科技有限公司,山东招远265400 [4]新疆星塔矿业有限公司,新疆托里834500

出　　处：《有色金属（冶炼部分）》2016年第1期30-33,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金："十二五"国家科技支撑计划项目(2012BAB08B04);国土资源部公益性行业科研专项(201211069-02)

摘　　要：难处理复杂金精矿采用两段焙烧提金工艺流程中,一段炉采用流化床沸腾焙烧脱砷,二段炉采用循环流态化焙烧脱硫。生产实践表明,该组合形式生产出的焙砂的质量明显优于常规的第二段氧化焙烧采用沸腾流化床焙烧炉,同时焙砂的金氰化浸出率提高了2~3个百分点。A new type of two stage roasting process to pretreat refractory gold concentrate was proposed with the first stage adopting fluidized bubbling bed（BFB）roasting to remove arsenic and the second stage adopting circulating fluidized bed（CFB）roasting to remove sulfur.Plant practice shows that quality of calcine obtained from this new combination apparently outperformed that of conventional combination where the second stage applies BFB as well,and gold cyanidation leaching rate can be improved by 2~3percent point.

关 键 词：难处理金精矿 流化床沸腾焙烧 循环流态化焙烧 提金 两段焙烧 

分 类 号：TF831[冶金工程—有色金属冶金]