难处理复杂金矿循环流态化焙烧提金技术  

Roasting Technology of Refractory and Complex Gold Ore Using Circulating Fluid Bed

作　　者：李云[1] 王云[1] 袁朝新[1] 孙建伟 黄海辉[1] 

机构地区：[1]北京矿冶研究总院,北京100070 [2]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）》2011年第3期31-33,共3页Nonferrous Metals（Extractive Metallurgy)

基　　金："十一五"国家科技攻关计划项目(2006BAB02A15)

摘　　要：300 t/d循环流态化焙烧提金示范工程投产运行状况及提金结果表明,采用循环流态化焙烧含金物料时,气固混合剧烈,物料温度分布均匀、停留时间长,碳燃烧充分完全。对含金平均品位在4-8 g/t的复杂含砷低硫精矿尾渣,通过循环流态化焙烧——氰化浸出后,渣金品位下降至平均1.5-2.5 g/t,金回收率75%-85%,焙烧温度750℃,煤耗3.5%左右。300 t/d pilot of circulating fluid bed（CFB）roaster was established.Operation status and gold extraction results of the project showed that gas and solid have violent mixing reaction,the temperature distribution is uniform and retaining time is longer,and the carbon in minerals burns completely.For the tailings of arsenic-bearing low-sulphur concentrations with average gold grade of 4-8 g/t,the gold grade in residues decreased to average 1.5-2.5 g/t after treated by CFB roasting and cyanide leaching,and the gold extraction is 75%-85% with roasting temperature of 750 ℃ and coal consumption of about 3.5%.

关 键 词：难处理金矿 循环流态化焙烧 低硫矿 提金 

分 类 号：TF831[冶金工程—有色金属冶金]