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本文概述了国内外硫脲提金的试验研究概况,阐述了硫脲一步法(金属置换法、矿浆直接电积法、矿浆树脂法、炭浆法)提金的理论基础,论证了影响一步法提金过程技术经济指标的主要因素及其交互影响。通过试验对比,认为上述四种一步法提金方案具有较好的工业化前景,但矿浆直接电积法和吸附法具有较高的浸出速率。对龙水金矿的含金84克/吨、含碳2.09％的浮选金精矿,采用硫脲矿浆直接电积法处理,浸出—电积4小时,可以得到浸出率为90～97％,沉积率为96％左右的小型试验指标,用直接剥离或反向电积的方法得到成品金,证明硫脲矿浆直接电积法提金工艺是一种高效快速的提金方法,有利于提高提金过程的经济效益。目前急需进一步完善工艺,组织扩大试验以验证小型试验的结论。
This paper presents an overview of the experimental research on thiourea gold extraction at home and abroad, and expounds the theoretical basis for the gold extraction from thiourea one-step method (metal displacement method, direct electrodeposition method of slurry, slurry resin method, carbon slurry method) The main factors of technical and economic indexes of gold extraction and their interaction. Through the comparison of experiments, it is concluded that the above four one-step gold extraction schemes have a good industrialization prospect, but the direct electrowinning and adsorption methods have higher leaching rates. The leaching rate of 90 ~ 97% can be obtained for the leaching gold concentrate containing 84 g / t gold and 2.09% carbon in Longsheng Gold Mine by direct electro-deposition of thiourea slurry for 4 hours. , Deposition rate of about 96% of the small test indicators, direct stripping or reverse electrowinning method to obtain finished gold, thiourea direct electrowinning gold plating process is an efficient and rapid gold extraction method is conducive to improving The economic benefits of the gold extraction process. There is an urgent need to further improve the process, organize the expansion of the test to verify the conclusion of small-scale test.