难处理复杂金矿循环流态化焙烧技术.doc

DOI:.1007-
难处理复杂金矿循环流态化焙烧提金技术
李云1,王云1,袁朝新1,孙建伟2,黄海辉1
(, 北京100070;, 新疆托里834500)
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***低硫精矿尾渣,通过循环流态化焙烧——***化浸出后,~ g/t,金回收率75%~85%,焙烧温度750 ℃,%左右。
关键词: 难处理金矿;循环流态化焙烧;低硫矿;提金
中图分类号:TF831 文献标识码:A 文章编号:1007-7545(2011)03-0000-00
Roasting Technology of Refractory plex Gold Ore Using Circulating Fluid Bed
LI Yun1, WANG Yun1, YAN Chao-xin1, SUN Jian-wei2, HUNAG Hai-hui1
(1. Beijing General Research Institute of Mining & Metallurgy, Beijing 100070, China;
2. Xinjiang Xingta Kuangye Co. Ltd. , Xinjiang Tuoli 834500, China)
Abstract: 300 t/d pliot of circulating fluid bed(CFB) roaster was established. According to operation conditions and Au extraction results, in CFB roaster, it shows that gas and solid has violent mixing reaction, the temperature distribution is uniform and retaining time is longer, and the carbon in minerals pletely. For the tailings of arsenic-bearing low-sulphur concentrations with average Au 4~8g/t, the residues Au decreases to average ~ g/t by CFB roasting and cyanide leaching, and the Au extraction is 75%~85% by roasting temperation of 750℃ and coal consumption of about %.
Keywords:Refractory; Circulating Fluid Bed roasting; Low-sulphur ore; Gold extraction
20世纪90年代,鲁奇公司将循环流化床(简称C