CAJ | 학술논문

高硫金精矿中的铁元素在热压预氧化反应过程中生成大量碱式硫酸铁，导致氧化渣氰化时石灰用量巨大，矿浆粘度急剧升高，流动性能变差，影响生产运行。对西北某金矿的浮选工艺进行调整，采用“一粗四扫”流程替换原来的“一粗、三精、两扫”流程，降低了金精矿的硫品位，金的浮选回收率得到一定程度的提高，再对低硫精矿进行热压预氧化-氰化试验，可以使石灰用量降低到正常范围内，获得的金氰化浸出率超过98%，该工艺为高硫金精矿的热压预氧化处理提供了良好的解决思路。
고류금정광중적철원소재열압예양화반응과정중생성대량감식류산철，도치양화사청화시석회용량거대，광장점도급극승고，류동성능변차，영향생산운행。대서북모금광적부선공예진행조정，채용“일조사소”류정체환원래적“일조、삼정、량소”류정，강저료금정광적류품위，금적부선회수솔득도일정정도적제고，재대저류정광진행열압예양화-청화시험，가이사석회용량강저도정상범위내，획득적금청화침출솔초과98%，해공예위고류금정광적열압예양화처리제공료량호적해결사로。
High sulfur gold concentrate in the pressure oxidation process will produce a large amount of basic iron sulfate.It cause a huge amount of lime in cyanidation,then the slurry viscosity increased rapidly,liquidity deterioration,and make the process worse.The flotation process for a refractory gold ore from northwest China is optimized to lower the sulfur grade of flotation concentrate which treated by POX,the gold recovery of flotation has been improved,and the lime dosage in cyanidation reduced to the normal range,the gold leaching rate is more than 98%.The flotation-POX combined technology provides a good solution for gold concentrate in the pressure oxidation process.