碱性硫化钠浸出含锑金精矿过程中金锑行为的研究-有色金属冶炼部分.doc

doi:.1007-
碱性硫化钠浸出含锑金精矿过程中金锑行为
靳冉公,王云,李云,孙留根
(北京矿冶研究总院,北京 100160)
摘要:考察碱性硫化钠体系浸出某难处理含锑金精矿过程中金锑分离和综合回收,探讨浸出条件对金和锑浸出的影响,重点对该体系中金的浸出机理进行考察。结果表明,在硫化钠80 g/L、氢氧化钠20 g/L、%,%的金伴随浸出,同时揭示了金浸出率随电位及温度变化的规律。
关键词:含锑金精矿;碱性浸出;硫化钠;脱锑
中图分类号:TF831 文献标志码:A 文章编号:1007-7545(2014)07-0000-00
Behavior of Gold and Antimony during Leaching of Sb-Bearing Gold Concentrate with Sodium Sulfide
JIN Ran-gong, WANG Yun, LI Yun, SUN Liu-gen
(Beijing General Research Institute of Mining and Metallurgy, Beijing 100160, China)
Abstract:The separation prehensive recovery of gold and antimony from Sb-bearing gold concentrate with in alkaline and sodium sulfide system were investigated. The effects of leaching conditions on leaching of gold and antimony were discussed. The gold leaching mechanism in this system was explored. The results show that the leaching rate of antimony at room temperature is % above panied with % leaching rate of gold under the conditions including sodium sulphide of 80 g/L and sodium hydroxide of 20 g/L. The relationship between gold leaching rate of potential and temperature is revealed.
Key words: antimony-bearing gold concentrate; alkaline leaching; sodium sulfide; antimony removal
难处理金矿通常含有一定量的锑、砷、硫、碳等,对后续的氰化提金十分有害,目前通常先采用火法焙烧或者氧压浸出等预处理工艺脱除这些有害物质[1-10]。在我国甘肃某地有大量的难处理含砷、锑金精矿,经过选矿后得到一种含锑4%~7%的金精矿,由于含锑较低,不能作为火法炼锑的原料。对于此类锑金矿