新疆某铜钴矿工艺矿物学研究

发布时间：2018-06-23 06:25

本文选题：铜钴矿 + 工艺矿物学　；参考：《有色金属(选矿部分)》2017年01期

【摘要】：新疆卡拉盖雷铜钴矿石选矿过程中铜钴不易分离,且铜精矿和钴精矿中砷的含量容易超标。采用多种分析检测手段对该矿进行了详细的工艺矿物学研究。查明矿石中有价元素主要是铜和钴,含量分别为0.84%和0.10%,有害元素砷的含量为0.48%。矿石中铜、钴的氧化率很低,分别为2.38%和0.99%。黄铜矿是矿石中主要的铜矿物,嵌布粒度极不均匀,主要呈细粒产出,分布率为53.45%;其次呈粗、中粒产出,分布率为41.17%;呈微粒产出的黄铜矿分布率为5.38%。矿石中的钴主要以类质同象形式赋存在毒砂、钴毒砂、铁硫砷钴矿、辉砷钴矿系列矿物中,因此在选矿过程中钴和砷的走向相同而难以分离。由于铜钴矿物密切共生,导致铜精矿中砷的含量也易偏高。根据矿石工艺特性,该矿石适宜采用分段磨矿分段选别工艺逐步分离回收铜钴矿物,同时达到抑制铜精矿中砷含量的目的。
[Abstract]:It is difficult to separate copper and cobalt from Kalageli copper-cobalt ore in Xinjiang, and the content of arsenic in copper concentrate and cobalt concentrate is easy to exceed the standard. Process mineralogy of the ore was studied in detail by various analytical and detection methods. It is found that the main valuable elements in the ore are copper and cobalt, the contents of which are 0.84% and 0.10%, respectively, and the harmful element arsenic content is 0.48%. The oxidation rates of copper and cobalt in ore are very low, 2.38% and 0.99%, respectively. Chalcopyrite is the main copper mineral in the ore. The distribution rate of chalcopyrite is 53.45%, the distribution rate of chalcopyrite is 41.17% and the distribution rate of chalcopyrite is 5.38%. The cobalt in ore mainly occurs in arsenopyrite, cobalt arsenopyrite, ferrite arsenite and arsenite series minerals in the form of metamorphic homograph, so it is difficult to separate cobalt and arsenic in the course of ore dressing because of the same trend of cobalt and arsenic. Due to the close symbiosis of copper and cobalt minerals, the content of arsenic in copper concentrate is also easy to be higher. According to the technological characteristics of the ore, the ore is suitable for the gradual separation and recovery of copper and cobalt minerals by means of segmental grinding and segmental separation process, and the purpose of restraining the arsenic content in copper concentrate is achieved at the same time.
【作者单位】：天津华北地质勘查局;
【分类号】：TD91

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