陈艳波, 李光胜, 朱幸福, 等. 甘肃某选冶厂原生金矿全泥氰化浸出实验[J]. 矿产综合利用, 2024, 45(4): 139-144. DOI: 10.3969/j.issn.1000-6532.2024.04.021
    引用本文: 陈艳波, 李光胜, 朱幸福, 等. 甘肃某选冶厂原生金矿全泥氰化浸出实验[J]. 矿产综合利用, 2024, 45(4): 139-144. DOI: 10.3969/j.issn.1000-6532.2024.04.021
    CHEN Yanbo, LI Guangsheng, ZHU Xingfu, et al. Full slime cyanidation leaching of the primary gold ore from a metallurgical processing plant in gansu[J]. Multipurpose Utilization of Mineral Resources, 2024, 45(4): 139-144. DOI: 10.3969/j.issn.1000-6532.2024.04.021
    Citation: CHEN Yanbo, LI Guangsheng, ZHU Xingfu, et al. Full slime cyanidation leaching of the primary gold ore from a metallurgical processing plant in gansu[J]. Multipurpose Utilization of Mineral Resources, 2024, 45(4): 139-144. DOI: 10.3969/j.issn.1000-6532.2024.04.021

    甘肃某选冶厂原生金矿全泥氰化浸出实验

    Full Slime Cyanidation Leaching of the Primary Gold Ore from a Metallurgical Processing Plant in Gansu

    • 摘要: 这是一篇冶金工程领域的论文。某选冶厂处理原生矿和氧化矿两种金矿石,原生矿采用常规浮选工艺处理,浮选精矿金回收率85%左右,外售至省外冶炼企业氰化浸出;氧化矿采用搅拌氰化浸出-活性炭吸附-载金炭解析电积-金泥熔炼铸锭工艺处理,产出金锭外售,金选冶总回收率90%左右。目前,随着开采深度加深,矿石性质发生变化,氧化矿矿量逐渐降低,原生矿矿量逐渐增加,使浮选系统来矿量过大,浸出系统处理量不足,影响企业经济效益。为此,企业考虑将浮选系统处理不了的原生矿混入现有氧化矿全泥氰化浸出系统,增加企业金锭产量和经济效益。为使现有全泥氰化浸出系统能够浸出原生矿,基于现场调研,针对原生矿开展了磨矿细度、药剂用量、溶氧量条件实验,并结合生产实际开展了碱浸预处理实验、混合氧化矿浸出实验。基于这些实验研究结果,给生产现场提出了具体整改要求和措施。

       

      Abstract: This is an article in the field of metallurgical engineering. A beneficiation and smelting plant processes two kinds of gold ores: primary ore and oxidized ore. The primary ore is treated by conventional flotation process. The gold recovery rate of flotation concentrate is about 85%, which is sold to smelting enterprises outside the province for cyanide leaching. The oxidized ore is treated by stirring cyanidation leaching activated carbon adsorption gold loaded carbon analytical electrodeposition gold slime smelting ingot casting process. The output gold ingot is sold outside, and the total recovery rate of gold dressing and metallurgy is about 90%. At present, with the deepening of mining depth, the ore properties change, the amount of oxidized ore gradually decreases, and the amount of primary ore gradually increases, resulting in excessive ore treatment in flotation system and insufficient ore treatment in leaching system, affecting the economic benefits of enterprises. Therefore, the enterprise considers adding the primary ore that cannot be treated by the flotation system to the existing oxidized ore all slime cyanidation leaching system to increase the gold ingot output and economic benefits of the enterprise. In order to enable the existing full slime cyanidation leaching system to leach the primary ore, based on the field investigation, the grinding fineness, reagent dosage and dissolved oxygen condition tests were carried out for the primary ore, and the alkali leaching pretreatment test and mixed oxidation ore leaching test were carried out in combination with the actual production. Based on these test and research results, specific rectification requirements and measures are put forward for the production site.

       

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