循环流态化焙烧在金精矿两段焙烧中的设计与应用.doc

循环流态化焙烧在金精矿两段焙烧中的设计与应用.docdoi:.1007-
循环流态化焙烧在金精矿两段焙烧中的设计与应用
李云1,张立征2,魏晋3,王云1,刘洪晓4
(,北京 100160;,山东招远 265400;
,山东招远 265400;,新疆托里 834500)
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***,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***化浸出率提高了2~3个百分点。
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
中图分类号:TF831 文献标志码:A 文章编号:1007-7545(2016)01-0000-00
Design and Application of Circulating Fluid Bed Technology on Two-stage Roasting Process of Gold Concentrate
LI Yun1, ZHANG Li-zheng2, WEI Jin3, WANG Yun1, LIU Hong-xiao4
(1. Beijing General Research Institute of Mining & Metallurgy, Beijing 100160, China;
2. Zhaojin Mining Co Ltd, Zhaoyuan 265400, Shandong, China;
3. Zhaoyuan City Zhaojin Jinhe Science and Technology Ltd, Zhaoyuan 265400, Shandong, China;
4. Xinjiang Xingta Kuangye Co. Ltd., Tuoli 834500, Xinjiang, China)
Abstract: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 bination apparently outperformed that of bination where the second stage applies BFB as well, and gold cyanidation leaching rate can be improved by 2~3 percent point.