云南香格里拉铜钼矿选矿试验研究

发布时间：2018-04-23 04:39

本文选题：斑岩铜矿 + 工艺矿物学　；参考：《昆明理工大学》2017年硕士论文

【摘要】：斑岩型铜矿床是铜和钼金属的主要来源,据统计,世界上约有75%的铜出自于斑岩型矿床中,本世纪以来我国已发现10余处大型斑岩型铜矿床中,便包含本论文的研究对象云南香格里拉铜矿。目前,斑岩铜矿中铜和钼的回收一直面临着药剂选择性差、精矿品位差、铜钼分离困难等技术难题,其高效回收与利用是选矿研究的一大难点也同时是本论文的研究重点。论文通过工艺矿物学研究,查明矿石中主要矿物的共伴生关系以及嵌布粒度等特征,同时通过工艺流程与药剂制度的对比研究,以寻找适合该矿石资源高效回收的技术路线。对试验矿样进行的工艺矿物学研究表明,矿石中铜含量为0.58%,主要铜矿物为黄铜矿,多数与长石、石英连生;矿石中钼含量为0.015%,主要钼矿物为辉钼矿,总体嵌布粒度在0.025～0.1mm之间,利于回收。浮选试验研究结果表明:铜钼混浮试验,采用C5460为捕收剂,F425为起泡剂,石灰为调整剂,通过一次粗选三次精选两次扫选的开路试验,获得了铜品位29.64%,铜回收率69.17%,钼品位0.795%,钼回收率71.54%的混合精矿。铜钼分离试验中,采用煤油作为钼的捕收剂,硫化钠和D610混合抑制黄铜矿,水玻璃作为调整剂,通过一次粗选五次精选一次扫选的开路试验,获得了钼品位48.91%,钼作业回收率65.33%的钼精矿以及铜品位29.11%,铜作业回收率87.82%的铜精矿。在以上开路试验基础上进行了全流程闭路试验,获得了产率为1.77%,铜品位28.63%,铜回收率87.54%的铜精矿和产率为0.02%,钼品位45.03%,钼回收率73.07%的钼精矿。在小型试验的流程结构和药剂制度的基础上,进行了处理量为0.72t/d混合浮选闭路连续试验,72h连续试验获得了产率1.68%,铜品位27.95%,铜回收率82.37%,钼品位0.75%,钼回收率84.14%,与实验室小型试验结果基本吻合。
[Abstract]:Porphyry copper deposits are the main sources of copper and molybdenum metals. According to statistics, about 75% of the copper deposits in the world come from porphyry deposits. More than 10 large porphyry copper deposits have been discovered in China since this century. The research object of this paper is Shangri-La Copper Mine in Yunnan Province. At present, the recovery of copper and molybdenum in porphyry copper mine has been faced with technical problems such as poor selectivity of reagent, poor grade of concentrate and difficulty in separation of copper and molybdenum. High efficiency recovery and utilization of copper and molybdenum in porphyry copper mine is a major difficulty in ore dressing research and is also the focus of this paper. Through the study of process mineralogy, this paper finds out the co-associated relation of the main minerals in the ore and the characteristics of the distribution granularity. At the same time, through the comparative study between the technological process and the pharmaceutical system, we seek a technical route suitable for the efficient recovery of the ore resources. The technological mineralogical study on the ore samples shows that the copper content in the ore is 0.58, the main copper ore is chalcopyrite, most of which are associated with feldspar and quartz, and the molybdenum content in the ore is 0.015%, the main molybdenum is molybdenum, and the overall distribution granularity is between 0.025~0.1mm. It is good for recycling. The results of flotation test show that C5460 is used as collector and C5460 as foaming agent and lime as adjuster, through the open-circuit test of three cleaning and two cleaning in one rough separation, the flotation test shows that: C5460 is used as collector and C5460 as foaming agent and lime as adjuster. The mixed concentrate with copper grade 29.64, copper recovery 69.17, molybdenum 0.79555 and molybdenum recovery 71.54% were obtained. In the copper-molybdenum separation test, kerosene was used as the collector of molybdenum, sodium sulfide and D610 were mixed to inhibit chalcopyrite, and water glass was used as the adjuster. The molybdenum concentrate with recovery rate of 65.33% and copper concentrate with copper grade 29.11 and copper recovery 87.82% with molybdenum grade 48.91% were obtained. On the basis of the open circuit test above, the closed circuit test of the whole process was carried out, and the copper concentrate with yield of 1.77, copper grade of 28.63, copper concentrate with recovery rate of 87.54%, molybdenum concentrate with yield of 0.02%, molybdenum grade of 45.03 and molybdenum concentrate with recovery rate of 73.07% were obtained. On the basis of the process structure and the pharmaceutical system of the small scale test, The yield was 1.68, the copper grade was 27.95, the copper recovery rate was 82.37, the molybdenum grade was 0.755,the molybdenum recovery rate was 84.14, and the results were in good agreement with the experimental results.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD95

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