摘要
针对赞比亚谦比西铜矿西矿体矿石特点,原矿含铜1.855%,氧化率5.35%,主要硫化矿为黄铜矿,原矿低品位废石占25.32%左右,氧化率高、含泥量大,原矿中-38.5μm含量高达36.69%,属易碎难磨矿石。磨矿工艺试验研究表明,一段磨矿最优条件为-74μm占85.25%;两段磨矿最优条件为,第一段磨矿细度为-74μm占72.73%,第二段磨矿后总产品细度为-74μm占98.60%。浮选试验结果表明,对于该矿石,两段磨矿工艺明显优于一段磨矿工艺,铜回收率至少提高3个百分点。
Aiming at the copper ores from Chambishi of Zambia, with the grade of total copper of 1.855%, the oxidation rate of 5.35%, and the main copper sulphide minerals was chalcopyrite. The content of low-grade waste rock was about 25.32%, and this waste rock was of high oxidation rate and of high content of slime, the content of below 38.5μm particles was 36.69%. Grinding processes were studied due to the characteristics of minerals, the optimal conditions of one stage grinding process was -74μm content of 85.25%; the optimal conditions of two stage grinding was with -74μm content of 72.73% in the first grinding stage, and then 98.60% in the second stage. Through flotation, the recovery rate using two stage grinding was at least 3 percent points more than that of one stage grinding.
出处
《有色金属（选矿部分）》
CAS
北大核心
2015年第1期63-66,共4页
Nonferrous Metals（Mineral Processing Section）
关键词
黄铜矿
磨矿工艺
阶段磨矿
浮选
ehalcopyrite
grinding process
stage grinding
flotation
