A new process for extracting gold from refractory gold ore and manganese from manganese anode slime was developed by combining the oxidative pretreatment of refractory gold ore and reductive leaching of manganese anode slime. The response surface methodology was used to optimize the effects of time, temperature, and sulfuric acid concentration on the leaching efficiency of manganese. The manganese leaching efficiency was 91.64% under the conditions of two ore mass ratio of 1:0.5, sulfuric acid concentration of 1.25 mol/L, temperature of 85 °C, and leaching time of 2.5 h. The gold extraction efficiency from the pretreatment slag reached 90.30% and was higher than that of the untreated ore. The improvement of the gold-leaching efficiency is due to the destruction of pyrite and the decrease of gold ore size. Therefore, the synergistic effect between the leaching of manganese anode slime and the oxidative pretreatment of gold concentrate not only achieved the leaching of manganese, but also improved the leaching efficiency of gold.

中文翻译：

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响应面法优化锰阳极泥还原浸出与难处理金矿石氧化预处理协同作用

结合难熔金矿石的氧化预处理和锰阳极泥的还原浸出，开发了一种从难熔金矿石中提取金和锰阳极泥中锰的新工艺。响应面方法用于优化时间，温度和硫酸浓度对锰浸出效率的影响。在两种矿石质量比为1：0.5，硫酸浓度为1.25 mol / L，温度为85°C，浸出时间为2.5 h的条件下，锰的浸出效率为91.64％。预处理炉渣中的金提取效率达到90.30％，高于未处理矿石。浸金效率的提高归因于黄铁矿的破坏和金矿石尺寸的减小。因此，