| 高钙高硅铜矿中铜及伴生金银浮选回收试验研究 |
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| 引用本文： | 周芸,丰奇成.高钙高硅铜矿中铜及伴生金银浮选回收试验研究[J].矿冶,2020,29(3):25-30. |
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| 作者姓名： | 周芸 丰奇成 |
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| 作者单位： | 昆明理工大学 国土资源工程学院,昆明 650093;昆明理工大学 国土资源工程学院,昆明 650093;昆明理工大学省部共建复杂有色金属资源清洁利用国家重点实验室,昆明 650093 |
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| 基金项目： | 国家自然科学基金项目,中国博士后科学基金 |
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| 摘 要： | 高钙高硅铜矿中元素铜及伴生金银的回收价值高,但实际生产中这些有价成分的回收指标较低,导致企业经济效益不理想。针对矿石性质,采用石灰和硫化钠为矿浆调整剂,丁基黄药与丁基铵黑药联合使用作为捕收剂,在磨矿细度-74μm粒级含量占70%的基础上,进行了浮选药剂优化和闭路试验。在石灰用量1 000g/t、硫化钠用量400g/t、丁基黄药用量400g/t、丁基铵黑药用量50g/t、松醇油用量84g/t的药剂制度下,采用两次粗选、两次精选、一次扫选、中矿顺序返回的浮选闭路流程,最终获得Cu品位21.45%、回收率90.46%,Au品位7.92g/t、回收率79.39%,Ag品位453.50g/t、回收率81.82%的铜精矿。与生产现场指标相比,不仅提高了矿石中铜的浮选回收率,而且极大地提高了矿石中伴生金银的回收效果,浮选指标较为理想。
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| 关 键 词： | 高钙高硅铜矿 伴生金银 浮选回收 联合用药 |
| 收稿时间： | 2020/3/13 0:00:00 |
| 修稿时间： | 2020/3/29 0:00:00 |
Experimental study on flotation recovery of copper and associated gold and silver from copper ores with high content of calcium and silicon |
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| ZHOU Yun and FENG Qicheng.Experimental study on flotation recovery of copper and associated gold and silver from copper ores with high content of calcium and silicon[J].Mining & Metallurgy,2020,29(3):25-30. |
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| Authors: | ZHOU Yun and FENG Qicheng |
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| Affiliation: | Kunming University of Science and Technology,Faculty of Land Resource Engineering, Kunming University of Science and Technology |
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| Abstract: | The element copper and associated gold and silver in copper ores with high content of calcium and silicon have high recovery value, but a low recovery index of these valuable metals was obtained in the practical production, resulting in unsatisfactory economic benefits of enterprise. Based on the ore properties, flotation reagent optimization and closed circuit flotation experiments were conducted in this work. During this process, lime and sodium sulfide were used as slurry regulator, butyl xanthate and ammonium dibutyl dithiophosphate were used together as collector, and the fraction content of -74 um was determined to be 70% with regard to the grinding degree. Under the flotation reagent regime of lime dosage with 1000 g/t, sodium sulfide dosage with 400 g/t, butyl xanthate dosage with 400 g/t, ammonium dibutyl dithiophosphate dosage with 50 g/t, and terpenic oil dosage with 84 g/t, the flowsheet of closed circuit flotation experiments with the order return of middlings was carried out using two-stage roughing, two-stage cleaning, and single-stage scavenging. Ultimately, copper concentrate with 21.45% Cu, 7.92 g/t Au and 453.50 g/t Ag was obtained, and the flotation recoveries of Cu, Au, Ag were 90.46%, 79.39%, 81.82%, respectively. Compared with the flotation result in the production, this work not only increased the flotation recovery of copper in ores, but also grealty improved the recovery of associated gold and silver in ores, and a desired flotation index was obtained. |
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| Keywords: | Copper ores with high content of calcium and silicon Associated gold and silver Flotation recovery Combined utilization of flotation reagents |
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