摘要
采用常规颚式破碎机和高压辊磨机破碎设备,开展两种不同破碎方式下金矿石柱浸试验,研究不同破碎方式对较粗粒级金矿石堆浸效果的影响,并结合破碎产品特性及显微分析技术,进一步探究高压辊磨方式在金矿石处理中的作用机理。结果表明：高压辊磨机较常规颚式破碎机产品粒度略细,颗粒表面裂纹更加丰富、堆浸体系饱和含水率较高,高压辊磨机对改善堆浸体系渗透效果和提高浸出率的效果明显;在相同条件下,试验金矿石浸出率提高约3.5%~6.8%,浸出剂耗量减少3.2%~11.3%。
Through the column leaching experiments of low grade gold ore crushed by conventional jaw crusher and high pressure grinding rolls（HPGR）, the influences of coarse particles processed by two different comminuting methods on the leaching rate were studied. Combined with the characteristics of products and microscopic analyses technology, the mechanism of HPGR method in the treatment process of gold ore was discussed furthermore. The results show that the products of HPGR are finer and containing richer micro cracks on particle surface and have higher saturated water content than that of conventional jaw crusher. HPGR can play a significant role in strengthening the penetration effect of heap leaching which can help to improve the leaching rate of gold ore at the same time. Under the same conditions, gold leaching rate of HPGR method can be improved by 3.5%-6.8%, meanwhile, the consumption of leaching solution is decreased by 3.2%-11.3%.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2016年第7期1531-1537,共7页
The Chinese Journal of Nonferrous Metals
基金
国家自然科学基金资助项目(51374079)
福建省自然科学基金资助项目(2015J05101)~~
关键词
破碎方式
高压辊磨机
堆浸
微裂纹
饱和含水率
comminuting methods
high pressure grinding rolls
heap leaching
micro crack
saturated water content
