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1、Abstract Dexing Copper Mine is an oversized multi-element low-grade porphyry copper deposit, but also oversized associated gold, silver. Beneficiation process associated gold, silver and copper, together with the enrichment in the copper concentrate and recovered. Field production using the traditio
2、nal copper-sulfur mixed floating and then grinding and then Separation Process of Copper and Sulfur, the collector-butyl xanthate with copper, is a strong sulfur flotation collector, due to its lack of selectivity and separation of copper-sulfur needed at a very high base medium and will be conducte
3、d at the same time suppression of pyrite, but also inhibited a small amount of sulfide copper minerals, in particular, is very important to not conducive associated gold and silver flotation, resulting in copper-sulfur separation of gold, silver loss. In this paper, process mineralogy Dexing Copper
4、Mine to start to identify associated gold, silver and copper objects relevant for the process of gold and silver mineral loss of status,College of Chemistry and Chemical Engineering, Central South University, with research and development of selective and better, more powerful collector Mac-12 to co
5、nduct small-scale experiments and industrial tests and from the IRandUV - visible spectroscopy, DFT calculations on the Mac-12 collector flotation mechanism of shallow analysis. The main results obtained are as follows: 1. Mac-12 collector pairs of chalcopyrite and other copper minerals have a stron
6、g pro-solid capabilities, such as sulfur mineral pyrite , etc has good selectivity. Mac-12 is a collector of partial oxidation of sulfide copper and copper sulfide excellent collector agent, is very conducive to sulfide copper ores in the associated gold and silver recovery. 2. Using Mac-12 collecto
7、r and a small amount of butyl xanthate process in comparison with the traditional xanthate process can reduce the separation of copper-sulfur lime operations dosage 1kg / t, to achieve a low-alkalinity copper-sulfur separation of copper and associated gold , silver recovery to be significantly impro
8、ved. Small-scale closed-circuit test results show that the recovery rate of 2.34% copper, gold and silver recoveries were increased by 6.43% and 0.53%. Industrial test results show that the recovery rate of 1.05% copper, gold recovery rate of 7.16%, silver recovery rate of 1.17%. 3.The results of re
9、search in this study, in order to optimize the flotation process of Dexing Copper Mine, a comprehensive collection of resources provides a useful exploration to maximize, so that a comprehensive recovery Dexing copper resources have been enriched the theory and practice. Key words: Mac-12 collector;
10、 Integrated Resource Recovery; Separation of Copper and Sulfur; flotation 目目 录录 前言 1 第一章 文献综述2 1.1 伴生金银回收的主要方法及存在的主要问题3 1.2 硫化矿伴生金银回收的研究状况3 1.2.1 国外硫化矿伴生金银回收的研究状况3 1.2.2 国内硫化矿伴生金银的研究状况3 1.2.3 德兴铜矿伴生金银的研究状况5 1.2.3.1 粗精矿再磨铜硫分离工艺5 1.2.3.2 低碱度铜硫分离工艺5 1.2.3.3 异步混合浮选工艺6 1.2.3.4 分步优先浮选新工艺6 1.2.3.5 Y-89 应用
11、7 第二章 德兴铜矿矿石性质研究 8 2.1 德兴铜矿矿石的工艺矿物学研究8 2.2 德兴铜矿伴生金、银与铜元素的相关性研究9 2.2.1 伴生金、银的富集规律及产出特性9 2.2.1.1 金、银、铜在矿石中的含量和分布状况9 2.2.1.2 金、银在不同矿物中的含量9 2.2.2 伴生金、银与铜的相关性分析9 第三章 德兴铜矿选矿过程中金银损失状态研究 11 第四章 提高德兴铜矿伴生金银回收率的试验研究12 4.1 采用 Mac-12 捕收剂进行提高德兴铜矿伴生金银回收率试验研究的 小型试验 12 4.1.1 试样 12 4.1.2 试验药剂 12 4.1.3 主要试验仪器 12 4.1.4
12、 试验方法 12 4.1.5 一段浮选捕收剂探索性试验 13 4.1.6 一段混合浮选条件试验 14 4.1.6.1 硫化钠用量试验 14 4.1.6.2 石灰、捕收剂条件试验 15 4.1.7 一段闭路及二段开路浮选试验 17 4.1.8 全流程闭路试验 18 4.1.9 现场溢流样验证试验 20 4.2 采用 Mac-12 捕收剂提高德兴铜矿伴生金银回收率的现场工业试验23 4.2.1 试验方法 23 4.2.2 试验条件 23 4.2.3 试验结果与讨论 23 第五章 Mac-12 药剂与矿物作用的机理研究25 5.1 红外光谱分析 25 5.2 紫外光谱分析 26 5.3 量子化学探索 27 5.4 结论 28 第六章 成本和效益概算29 6.1 计算依据 29 6.2 新增药剂成本 29 6.3 新增效益 29 6.4 年净增经济效益 29 第七章 总结 30 参考文献 31 致谢 33 前前 言言 我国金银资源较为丰富，而有色金属中伴生金银的储量和产量都具有
