某铜银矿浮选试验研究
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摘要
某铜银矿矿石中有用组分铜含量低,伴生贵金属银含量较高,矿石成分较复杂,金属分布不均匀,含泥较高,氧化铜嵌布粒度较细,属难选氧化铜矿。试验研究了不同磨矿细度、药剂用量和工艺流程条件下的分选效果,结果表明:硫化矿、氧化矿混合浮选铜银矿药剂简单而且指标良好;当原矿磨矿细度达到-0.075mm占90.77%时,相对入选原矿量,在调整剂水玻璃用量500g/t、石灰用量500g/t、硫化剂硫化钠用量300g/t、捕收剂Y89黄药用量100g/t、戊基黄药用量100g/t、丁铵黑药用量80g/t、Z-200用量20g/t的条件下,采用"硫氧混浮一粗三扫三精"浮选流程,闭路试验得到的铜精矿品位为26.89%,铜回收率为89.39%;银精矿品位为2 320.30g/t,银回收率为88.35%。
For a copper-silver mine,the useful components in the ore are low in copper content,associated with precious metal silver of high content.The ore composition is more complicated,the metal distribution is uneven,the mud content is high,and the copper oxide inlay is finer in size,which is a difficult copper oxide ore.The experiment researches on fineness of grinding,the dosage of reagents and mineral processing.The test results show that the flotation reagents system of sulphide ore and oxidized ore mixed flotation is simple and it has a good flotation index.When the-0.075 mm fineness of grinding is 90.77%,for raw ore the adjusting agent water glass dosage is 500 g/t and lime dosage is 500 g/t,vulcanizing agent sodium sulfide dosage is 300 g/t,collector Y89 xanthate dosage is 100 g/t,amyl xanthate dosage is 100 g/t,ammonium dibutyl dithiophosphate dosage is 80 g/t and Z-200 dosage is 20 g/t,the flotation mineral process of"sulfuroxygen mixed float one rough and three scavenger and three stages of cleaning"is adopted to carry out the sulfur-oxygen mixed flotation copper-silver ore and obtained the concentrate grade of copper is 26.89%,and the recovery rate is 89.39%,the obtained the concentrate grade of silver is 2 320.30 g/t,and the recovery rate is 88.35%.
For a copper-silver mine,the useful components in the ore are low in copper content,associated with precious metal silver of high content.The ore composition is more complicated,the metal distribution is uneven,the mud content is high,and the copper oxide inlay is finer in size,which is a difficult copper oxide ore.The experiment researches on fineness of grinding,the dosage of reagents and mineral processing.The test results show that the flotation reagents system of sulphide ore and oxidized ore mixed flotation is simple and it has a good flotation index.When the-0.075 mm fineness of grinding is 90.77%,for raw ore the adjusting agent water glass dosage is 500 g/t and lime dosage is 500 g/t,vulcanizing agent sodium sulfide dosage is 300 g/t,collector Y89 xanthate dosage is 100 g/t,amyl xanthate dosage is 100 g/t,ammonium dibutyl dithiophosphate dosage is 80 g/t and Z-200 dosage is 20 g/t,the flotation mineral process of"sulfuroxygen mixed float one rough and three scavenger and three stages of cleaning"is adopted to carry out the sulfur-oxygen mixed flotation copper-silver ore and obtained the concentrate grade of copper is 26.89%,and the recovery rate is 89.39%,the obtained the concentrate grade of silver is 2 320.30 g/t,and the recovery rate is 88.35%.
引文
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[3]陈经华,孙志健,叶岳华.同步浮选和异步浮选在氧化铜矿选矿中的应用研究[J].有色金属:选矿部分,2013(S1):67-69.CHEN Jinghua,SUN Zhijian,YE Yuehua.Application of synchronous flotation and asynchronous flotation in copper oxide ore dressing[J].Nonferrous Metals:Mineral Processing Section,2013(S1):67-69.
[4]丁淑芳,牛艳萍,张鸿波,等.某含金、银氧化铜矿选矿试验研究[J].资源开发与市场,2014,30(8):899-901.DING Shufang,NIU Yanping,ZHANG Hongbo,et al.Experimental study on mineral processing of the oxide copper ore with gold and silver[J].Resource Development and Market,2014,30(8):899-901.
[5]章国权.智利北部某极难选氧化铜尾矿回收工艺研究[J].现代矿业,2018,34(5):60-63,68.ZHANG Guoquan.Study on recovery technology of a very difficult copper oxide tailings in northern Chile[J].Modern Mining,2018,34(5):60-63,68.
[6]王伟福.提高宋家坡铜矿银回收率选矿试验研究[J].有色金属:选矿部分,2015(4):21-23,28.WANG Weifu.Experimental study on improving the silver recovery rate of Songjiapo copper mine[J].Nonferrous Metals:Mineral Processing Section,2015(4):21-23,28.
[7]肖庆飞,沈传刚,康怀斌.优化大山选矿厂磨矿粒度组成提高铜浮选指标[J].有色金属:选矿部分,2016(4):21-23,32.XIAO Qingfei,SHEN Chuangang,KANG Huaibin.Improving flotation indicator of copper by enhancing size composition of Dashan ore-dressing plant[J].Nonferrous Metals:Mineral Processing Section,2016(4):21-23,32.