中文摘要：

难处理含硫金精矿的生物预氧化方法前景广阔,但是由于生物预氧化反应速度慢、氧化周期长等因素的存在,严重影响该法在实际应用中的推广。因此,研究生物预氧化技术的强化方法已成为推动该技术发展的关键因素。为达到强化目的,总结了3个方面的强化策略：首先,分析了微生物群落的组成优化,通过组合氧化能力更强的微生物群落来达到强化目的;其次,控制溶液的化学条件,以保证微生物的代谢和功能发挥;最后,对预氧化工艺进行改进,构建更高效的生化反应条件。通过这些方法,难处理含硫金精矿生物预氧化效果可望得到有效强化。

英文摘要：

Growing demand of gold makes it essential to recover gold from refractory gold-bearing sulfide concentrates. Bio-oxidation method of refractory gold-bearing concentrates is a promising technology, but the widely utilization of bio-oxidation in the gold pre-treatment industry is limited by the low reaction rate and long oxidation cycle. Therefore, the intensifying approaches become the key factor to improve this technology. To achieve the intensification goal, three strategies were summarized in this work. Firstly, optimization of the microbial community was analyzed with the purpose of constructing more promising mixed cultures. Secondly, the chemical conditions were controlled to enhance the metabolism and function of the microorganisms. Thirdly, new processing approaches were improved to create more favorable conditions for biological and chemical reactions. When the bio-oxidation process is subjected to these strengthening strategies, the bio-oxidation efficiency will be elevated significantly.