摘要
贵州某金矿为含砷、硫、碳质、微细粒浸染型金矿,是典型的“卡林型”难处理金矿。对该金矿进行磨矿细度、p H调节剂、硫酸铜用量、捕收剂种类等一系列浮选参数的试验,均得不到较好的浮选效果,精矿产率低、金品位富集程度低,金回收率低于60%,尾矿金损失高。针对上述问题,本文突破了传统浮选工艺的局限,创新提出了一种将难处理金矿与易浮选金精矿配矿进行加压氧化-氰化的处理技术。该方法综合考虑了矿石处理的酸碱平衡、热力学平衡以及资源的高效利用,将难处理金矿与易浮选金精矿配矿,不仅可以综合利用难处理金矿氧化产生的过剩酸量,还可实现98%的金浸出率,极大提升了难处理矿产资源的经济价值和开发利用效率。
A gold mine in Guizhou contains arsenic,sulfur and carbon.It's a fine-grained disseminated gold deposit and a typical Carlin-type refractory gold deposit.A series of flotation parameters such as grinding fineness,pH regulator,copper sulfate dosage and collector type were tested,and no good flotation effect was obtained.The concentrate rate was low,the gold grade enrichment degree was low,the gold recovery rate was less than 60%,and the gold loss of tailings was high.In view of the above problems,this paper broke through the limitations of traditional flotation process,and innovatively proposed a treatment technology of pressurized oxidation-cyanidation of refractory gold ore and easy flotation gold concentrate.This method comprehensively considers the acid-base balance,thermodynamic balance and efficient utilization of resources in ore treatment.The ore blending of refractory gold ore and easy-to-float gold concentrate can not only comprehensively utilize the excess acid generated by the oxidation of refractory gold ore,but also achieve a gold leaching rate of 98%,which greatly improves the economic value and development and utilization efficiency of refractory mineral resources.
作者
熊明
XIONG Ming(Guizhou Zijin Mining Co.,Ltd.,Qianxinan Autonomous Prefecture 562205,China)
出处
《绿色矿冶》
2025年第6期64-71,共8页
Sustainable Mining and Metallurgy
关键词
难处理金矿
卡林型金矿
浮选
加压氧化
氰化
资源化利用
refractory gold mine
Carlin type gold
flotation
pressure oxidation
cyanide
efficient utilization
