四川甘洛某氧化铜矿石浮选试验
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摘要
甘洛铜矿石铜品位平均为1.96%,有害元素含量极低。矿石自然类型单一,铜矿物以孔雀石为主。为实现该铜矿石的有效回收利用,采用混合浮选工艺进行选矿试验。结果表明,在磨矿细度-0.074 mm 77%、活化剂硫化钠用量3 000 g/t,组合捕收剂丁基黄药+丁基铵黑药+羟肟酸钠用量120+60+30 g/t条件下,采用2粗2扫4精混合浮选闭路流程处理矿石,可获得铜品位24.07%、回收率77.12%的铜精矿,损失在尾矿中的铜矿物孔雀石主要与铁质混杂、多充填在裂隙或显微裂隙内,粒度微细,单体解离非常困难,因此难以回收。
The average grade of Ganluo copper ore is 1.96%,the content of harmful elements are extremely low.The natural type of ore is single,malachite is the main metal mineral.In order to realize the effective recovery and utilization of the copper ore,the bulk flotation process was used to beneficiation test.The result show that it could get copper grade of 24.07% and 77.12% recovery copper concentrate at grinding fineness of-0.074 mm accounted for 77%,under two roughing,four cleaning and two scavenging closed circuit bulk flotation process,with sodium sulfide dosage 3 000 g/t,the combined collector(butyl xanthate+butyl ammonium+hydroximic acid) dosage 120+60+30 g/t,but it's hard to recycle the malachite lost in tailings,which is mixed with iron,filling in cracks or micro-cracks,with finer grain size,the mineral liberation is very difficult,so it is difficult to be recovered.
The average grade of Ganluo copper ore is 1.96%,the content of harmful elements are extremely low.The natural type of ore is single,malachite is the main metal mineral.In order to realize the effective recovery and utilization of the copper ore,the bulk flotation process was used to beneficiation test.The result show that it could get copper grade of 24.07% and 77.12% recovery copper concentrate at grinding fineness of-0.074 mm accounted for 77%,under two roughing,four cleaning and two scavenging closed circuit bulk flotation process,with sodium sulfide dosage 3 000 g/t,the combined collector(butyl xanthate+butyl ammonium+hydroximic acid) dosage 120+60+30 g/t,but it's hard to recycle the malachite lost in tailings,which is mixed with iron,filling in cracks or micro-cracks,with finer grain size,the mineral liberation is very difficult,so it is difficult to be recovered.
引文
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[13] 鲍磊,刘学勇.氧化铜矿石浮选捕收剂的研究进展[J].矿业工程,2011(4):36-37.
[2] 王鹏程,陈志勇,曹志明,等.氧化铜矿石的选矿技术现状与展望[J].金属矿山,2016(5):106-112.
[3] 蒋太国,方建军,张铁民,等.氧化铜矿选矿技术研究进展[J].矿产保护与利用,2014(2):49-53.
[4] 曹惠昌.我国铜矿石选矿技术研究新进展[J].有色矿冶,2011(6):26-28.
[5] 冯宁.难选氧化铜矿石选矿技术研究及应用[J].现代矿业,2014(2):174-175.
[6] 申欢华,张雄.四川甘洛—石棉地区峨眉山玄武岩铜矿地质特征、成因探讨及找矿前景分析[J].科技风,2011(17):66-67.
[7] 鲁孝军,雷庆.甘洛三道崖玄武岩铜矿矿床地质特征简述[J].城市地理,2017(8):81.
[8] 许远平,何政伟,刘严松,等.四川甘洛地区铜矿特征[J].成都理工大学学报(自科版),2011(4):456-462.
[9] 刘殿文,张文彬,文书明.氧化铜矿浮选技术[M].北京:冶金工业出版社,2009.
[10] 李国尧.某高氧化率铜矿石浮选试验[J].现代矿业,2017(12):102-104.
[11] 刘殿文,方建军,库建刚,等.云南东川汤丹氧化铜矿的选矿实践与发展[J].矿冶,2002(S1):150-153.
[12] 毕克俊,魏志聪,蒋太国,等.氧化铜矿石浮选活化剂的研究进展[J].矿产保护与利用,2015(5):74-78.
[13] 鲍磊,刘学勇.氧化铜矿石浮选捕收剂的研究进展[J].矿业工程,2011(4):36-37.