| 某高铁型铜硫矿工艺矿物学特征及选矿试验研究 |
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| 引用本文： | 张晶,唐鑫,刘遍洲,陈桃,简胜.某高铁型铜硫矿工艺矿物学特征及选矿试验研究[J].矿产保护与利用,2022,42(1):144-149. |
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| 作者姓名： | 张晶 唐鑫 刘遍洲 陈桃 简胜 |
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| 作者单位： | 1.昆明冶金研究院有限公司，云南 昆明 650031 |
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| 基金项目： | 云南省科技厅基础研究专项-重点项目复杂低品位硫化铜矿浮选捕收剂诱导效应与协同作用基础研究202201AS070054 |
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| 摘 要： | 为查明矿石性质对选矿指标的影响，对国外某高铁型铜硫矿采用光学显微镜、物相分析和化学多元素分析等分析测试手段，研究了矿石的矿物组成、主要矿物嵌布特征和主要元素赋存状态等工艺矿物学特征。工艺矿物学研究结果表明，Cu和S为矿石中主要目的元素，品位分别为0.78%和11.12%，伴生元素银品位为7.5 g/t，铜主要赋存于黄铜矿、辉铜矿和铜蓝中; 硫主要赋存于黄铁矿和黄铜矿中。部分含铜和含硫矿物粒度较细，嵌布于脉石矿物孔隙处或包裹于脉石矿物中，影响铜硫的分离与回收。根据工艺矿物学特征，采用“铜硫混合浮选—铜硫粗精矿再磨—铜硫分离”的选矿工艺流程，最终获得铜精矿Cu品位为20.61%、Cu回收率为72.63%，Ag在铜精矿中富集，含量143.90 g/t，回收率76.51%，硫精矿S品位为32.19%、S回收率为91.41%。
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| 关 键 词： | 硫化铜矿 铜硫分离 工艺矿物学 浮选 |
| 收稿时间： | 2022-02-17 |
Technological Mineralogical Characteristics and Beneficiation Test of A High-Fe Copper Mine |
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| Affiliation: | 1.Kunming Metallurgy Institute Co. Ltd, Kunming 650031, China2.Yunnan Key Laboratory for New Technology of Beneficiation and Metallurg, Kunming 650031, China3.Yunnan Diqing Mining Development Co. Ltd., Diqing 674500, China4.School of Land and Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China |
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| Abstract: | In order to find out the influence of ore properties on beneficiation indexes, optical microscope, electron probe, phase analysis, and chemical multi-element analysis were used to study the mineral composition, main mineral embedding characteristics and occurrence state of main elements minerals of a copper sulfide ore abroad. The mineralogical characteristics results show that the main target elements in the ore are Cu a·nd S, the grade is 0.78% and 11.12%, respectively, the associated element silver grade is 7.5 g/t, and copper mainly occurs in chalcopyrite, chalcocite and covellite; S is mainly occurs in pyrite and chalcopyrite. Some copper and sulfur-containing minerals have fine particle size, which are embedded in the pores of gangue minerals or wrapped in gangue minerals, affecting the separation and recovery of copper and sulfur. According to the mineralogical characteristics, the beneficiation process of "mixed flotation-copper-sulfur coarse concentrate regrind-copper-sulfur separation" is adopted, and the final copper concentrate Cu grade is 20.61%, and the Cu recovery rate is 72.63%; Ag was enriched in copper concentrate with the content of 143.90 g/t and the recovery rate of 77.96%; the sulfur concentrate S grade is 32.19%, S recovery rate is 91.41%. |
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