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作 者:刘厚明[1] 舒荣波[1] 王晓慧[1] 程蓉[1] 梁友伟[1]
机构地区:[1]中国地质科学院矿产综合利用研究所,四川成都610041
出 处:《矿产综合利用》2012年第6期21-24,共4页Multipurpose Utilization of Mineral Resources
基 金:国土资源部公益基金项目(201111030)
摘 要:以白银矿区存有的大量含铜废石为研究对象,采用生物柱浸法对其进行浸出试验研究。结合白银废石铜矿特点与细菌浸出特性,分别研究不同矿样粒度,浸矿菌种,浸矿温度以及浸出时间等对浸出结果的影响。研究结果表明,采用BioMetal SM-3中等嗜热嗜酸菌浸出白银废石堆矿样是可行的,可在较短的浸出时间(190d)内获得较高的铜浸出率(-15mm粒级Cu浸出率>60%)。通过对比不同矿样粒度对金属浸出率与矿柱稳定性的影响,在工业应用时,为保证矿堆的稳定性和金属浸出速率,建议将矿石破碎到-20 mm粒级然后筑堆。。本试验研究所取得的试验参数揭示了白银含铜废石生物浸出规律及过程控制因素,对白银含铜废石采用生物堆浸工业生产具有指导意义。Research on leaching experiment by adopting bioleaching method was carried on the copper-containing waste rock in Baiyin. According to the ore properties and bioleaching characteristic, the influence of grain size, types of leaching bacteria, leaching temperature and leaching time on leaching results was studied. The results showed that the bioleaching of copper-containing waste rock using moderate thermoacidophile BioMetal SM-3 was feasible. And the relatively high leaching rate ofcopper( 〉60% )was obtained for size of -15mm after being bioleached for 190 days. The influence of ore size on metal leaching rate and column stability was also researched. When it was applied to industry, the ore should be crushed to -20mm before ore stacking to ensure the stability of ore heap and metal leaching rate. The obtained experimental parameter revealed the rule and process-controlled factors of the copper containing waste rock in Baiyin, which can guide the industrial production of the copper-containing waste rock in Baiyin by adopting the method of bioleaching.
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