低品位铜钴氧化矿硫酸体系SO_2还原浸出
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摘要
针对刚果(金)铜钴矿氧化程度高、硅含量高的特点,以卢本巴希某铜钴矿为研究对象,本文开展了常温硫酸体系SO_2还原浸出试验研究,并通过物相分析,考察了浸渣中Cu、Co的损失行为。研究结果表明,在原矿粒度-0.074 mm占68.93%、液固比3:1、终点pH值为1.5、SO2用量8 kg/t矿、常温浸出5h优化条件下,硫酸消耗42kg/t矿,铜、钴浸出率分别达94.6%和78.9%。浸渣中铜主要赋存在铜蓝、褐铁矿及脉石中,钴主要赋存于脉石和褐铁矿中。
According to the high oxidation degree and high silicon content of the copper-cobaltmine from D. R. Congo, SO_2 reduction leaching of low-grade copper-cobalt oxide ores from Lubumbashi in sulfuric acid system was investigated. and the loss behavior of copper and cobalt in the leach residue was investigated through the phase analysis. The results showed that sulfuric acid consumption was 42kg/tore, and the leaching rates of copper and cobalt were 94.6% and 78.9%,respectively under the following conditions of ore particle size less than 0.074 mm accounted for 68.93%, liquid to solid ratio of 3:1, terminal p H value of 1.5, SO_2 consumption of 8kg/tore, and leaching duration of 5h at ambient temperature. The phase analysis of reduced leaching residue showed that the copper in leaching residue mainly existed in copper blue, limonite and gangue, while cobalt mainly existed in the gangue and limonite.
According to the high oxidation degree and high silicon content of the copper-cobaltmine from D. R. Congo, SO_2 reduction leaching of low-grade copper-cobalt oxide ores from Lubumbashi in sulfuric acid system was investigated. and the loss behavior of copper and cobalt in the leach residue was investigated through the phase analysis. The results showed that sulfuric acid consumption was 42kg/tore, and the leaching rates of copper and cobalt were 94.6% and 78.9%,respectively under the following conditions of ore particle size less than 0.074 mm accounted for 68.93%, liquid to solid ratio of 3:1, terminal p H value of 1.5, SO_2 consumption of 8kg/tore, and leaching duration of 5h at ambient temperature. The phase analysis of reduced leaching residue showed that the copper in leaching residue mainly existed in copper blue, limonite and gangue, while cobalt mainly existed in the gangue and limonite.
引文
1赵声贵,陈元初.世界及中国钴资源供需情况[J].矿冶工程,2012,32(1):153-156.
2赵中伟,王多冬,陈爱良,等.从铜钴合金及含钴废料中提取钴的研究现状与展望[J].湿法冶金,2008,27(4):195-199.
3曹异生.世界钴工业现状及前景展望[J].中国金属通报,2007,(42):30-34.
4赵武壮.应重视钴资源的战略地位[J].世界有色金属,2007,(10):6-31.
5Brems D,Muchez P,Sikazwe O,etal.Metallogenesis of the Nkana copper-cobalt South Orebody,Zambia[J].Journal of African Earth Sciences,2009,55(3):185-196.
6陈永强,王成彦,王忠.高硅铜钴矿电炉还原熔炼渣型研究[J].有色金属(冶炼部分),2003,(4):23-25.
7石玉臣,黄蕴成,孙蕊,等.从刚果(金)铜钴氧化矿提取钴的试验研究[J].中国有色冶金,2012,41(5):63-66.
8卢道刚.刚果(金)加丹地区铜钴矿加工工艺现状及发展趋势[J].世界有色金属,2009,(7):72-75.
9PARK K H,MOHAPATRA D,REDDY B R,etal.A study on the oxidative ammonia/ammonium sulphate leaching of a complex(Cu-Ni-Co-Fe)matte[J].Hydrometallurgy,2007,86(3):164-171.
10徐志峰,李强,王成彦.复杂硫化铜矿热活化-加压浸出工艺[J].中国有色金属学报,2010,20(12):2412-2418.
11刘媛媛,杨洪英,陈国宝,等.难处理低品位铜钴矿微生物浸出[J].材料与冶金学报,2016,15(2):92-96.
12Yang C R,Qiu W Q,Lai S S,etal.Bioleaching of a low grade nickel-copper-cobalt sulfide ore[J].Hydrometallurgy,2011,106(1):32-37.
13刘大学,王云,袁朝新,等.某铜钴矿的硫酸还原浸出研究[J].有色金属(冶炼部分),2013,(6):18-21.
14刘美林,刘国梁,武彪,等.低品位氧化铜矿堆浸工业试验[J].有色金属(冶炼部分),2012,(7):1-5.
15何焕华,蔡乔方.中国镍钴冶金[M].北京:冶金工业出版社,2000.
16王成彦.高碱性脉石低品位氧化铜矿的溶剂萃取工艺研究[J].有色金属(冶炼部分),2003,(3):2-6.
17Lwambiyi M,Maweja K,Kongolo K,etal.Investigation into the heap leaching of copper ore from the diesel deposit[J].Hydrometallurgy,2009,98(1):177-180.
18杨显万,邱定蕃.湿法冶金[M].北京:冶金工业出版社,2011.
2赵中伟,王多冬,陈爱良,等.从铜钴合金及含钴废料中提取钴的研究现状与展望[J].湿法冶金,2008,27(4):195-199.
3曹异生.世界钴工业现状及前景展望[J].中国金属通报,2007,(42):30-34.
4赵武壮.应重视钴资源的战略地位[J].世界有色金属,2007,(10):6-31.
5Brems D,Muchez P,Sikazwe O,etal.Metallogenesis of the Nkana copper-cobalt South Orebody,Zambia[J].Journal of African Earth Sciences,2009,55(3):185-196.
6陈永强,王成彦,王忠.高硅铜钴矿电炉还原熔炼渣型研究[J].有色金属(冶炼部分),2003,(4):23-25.
7石玉臣,黄蕴成,孙蕊,等.从刚果(金)铜钴氧化矿提取钴的试验研究[J].中国有色冶金,2012,41(5):63-66.
8卢道刚.刚果(金)加丹地区铜钴矿加工工艺现状及发展趋势[J].世界有色金属,2009,(7):72-75.
9PARK K H,MOHAPATRA D,REDDY B R,etal.A study on the oxidative ammonia/ammonium sulphate leaching of a complex(Cu-Ni-Co-Fe)matte[J].Hydrometallurgy,2007,86(3):164-171.
10徐志峰,李强,王成彦.复杂硫化铜矿热活化-加压浸出工艺[J].中国有色金属学报,2010,20(12):2412-2418.
11刘媛媛,杨洪英,陈国宝,等.难处理低品位铜钴矿微生物浸出[J].材料与冶金学报,2016,15(2):92-96.
12Yang C R,Qiu W Q,Lai S S,etal.Bioleaching of a low grade nickel-copper-cobalt sulfide ore[J].Hydrometallurgy,2011,106(1):32-37.
13刘大学,王云,袁朝新,等.某铜钴矿的硫酸还原浸出研究[J].有色金属(冶炼部分),2013,(6):18-21.
14刘美林,刘国梁,武彪,等.低品位氧化铜矿堆浸工业试验[J].有色金属(冶炼部分),2012,(7):1-5.
15何焕华,蔡乔方.中国镍钴冶金[M].北京:冶金工业出版社,2000.
16王成彦.高碱性脉石低品位氧化铜矿的溶剂萃取工艺研究[J].有色金属(冶炼部分),2003,(3):2-6.
17Lwambiyi M,Maweja K,Kongolo K,etal.Investigation into the heap leaching of copper ore from the diesel deposit[J].Hydrometallurgy,2009,98(1):177-180.
18杨显万,邱定蕃.湿法冶金[M].北京:冶金工业出版社,2011.