难处理金精矿两段焙烧流程的技术改造.doc

Doi:.1007-
难处理金精矿两段焙烧流程的技术改造
张跃红1,李云2,刘洪晓3,栾东武4,黄海辉2,王云2
(,青海平安 810600;,北京 100160;
,新疆托里 834500;,山东招远 265400)
摘要:某企业原难处理金精矿两段焙烧烟尘残硫、残***高,是影响金浸出的主要原因。将焙烧烟尘采用气流稀相输送至第二段沸腾焙烧炉中进行再次焙烧,充分脱除烟尘中的残硫与***,然后进行***化浸出。生产实践表明,烟尘再焙烧后提金,金的***%%。
关键词:难处理金精矿;两段焙烧;技术改造;稀相输送;提金
中图分类号:TF831 文献标志码:A 文章编号:1007-7545(2015)11-0000-00
Technical Transformation of Two-stage Roasting for Refractory Gold Concentrates
ZHANG Yue-hong1, LI Yun2, LIU Hong-xiao3, LUAN Dong-wu3, HUANG Hai-hui2, WANG Yun2
(1. Qinghai First Surveying Institute of Geology and Minerals, Ping’an 810600, Qinghai, China;
2. Beijing General Research Institute of Mining & Metallurgy, Beijing 100160, China;
3. Xinjiang Xingta Kuangye Co. Ltd, Tuoli 834500, Xinjiang, China;
4. Zhaoyuan City Zhaojin Jinhe Science and Technology Ltd, Zhaoyuan 265400, Shandong, China)
Abstract:The main affecting factor on gold cyanidation leaching rate of refractory gold concentrates is high content of residual sulfur and arsenic after two-stage roasting. The roasted dust was re-roasted in second fluidized bed roaster transported by ilute phase transportation to remove residual sulfur and arsenic, followed by cyanidation leaching. The plant practice shows that gold cyanidation leaching rate of re-roasted dust is improved from % to %.
Key words:re