造锍捕金过程中金在熔锍和熔渣之间的分配行为
Distribution behavior of gold between matte and slag during gold collection in matte
温飞云 1杨瑞 1罗援诏 1熊辉辉 1干磊1
作者信息
- 1. 江西理工大学材料冶金化学学部,赣州 341000
- 折叠
摘要
针对难处理金矿日益增多,造锍捕金法难以实现高效率捕金的问题,本研究通过高温平衡实验,研究温度、熔渣中m(Fe)/m(SiO2)和CaO含量等因素对熔锍捕金率的影响,探究不同反应时间金在熔锍和熔渣之间的分配行为.结果表明,当熔炼温度由1 250℃升至1 300℃时,熔锍的品位及捕金率均得到明显改善;熔锍品位(以 Cu含量表示,下同)及捕金率均随m(Fe)/m(SiO2)和CaO含量的增加而降低.当m(Fe)/m(SiO2)=0.86、CaO含量为4.00%时,熔锍的捕金率高达96.54%,并且高温熔炼反应0.5 h后,金即向熔锍中迁移,直至达到平衡态.
Abstract
In order to improve the recovery rate of gold from refractory gold ores,during the gold collection in matte,this study investigated the effects of temperature,m(Fe)/m(SiO2)ratio,and CaO content in the slag on the collection rate of gold through high-temperature equilibrium experiments.Meanwhile,the distribution behavior of gold between the molten metal and slag at different reaction times was also explored.The results show that both the matte grade and its collection rate of gold are significantly improved when the smelting temperature is increased from 1 250 ℃ to 1 300 ℃.Furthermore,the matte grade and the collection rate of gold of copper matte decrease with the increase of m(Fe)/m(SiO2)and CaO content.When the m(Fe)/m(SiO2)is 0.86 and CaO content is 4.00％,the collection rate of gold of copper matte is as high as 96.54％,and after 0.5 h of high-temperature smelting reaction,the gold immediately migrates to the matte until it reaches the equilibrium state.
关键词
造锍捕金/难处理金矿/平衡实验/捕金率/分配行为Key words
gold collection in matte/complex gold ore/equilibrium experiment/collection rate of gold/distribution behavior引用本文复制引用
基金项目
国家重点研究与发展计划项目(2022YFC2904205)
出版年
2024
NETL
NSTL
万方数据