谢铿,刘三平,王海北.赞比亚某硫化镍精矿氧压酸浸研究[J].有色金属(冶炼部分),2019(10):6-10.
赞比亚某硫化镍精矿氧压酸浸研究
Oxidative Pressure Leaching of Nickel Sulfide Concentrate from Zambia
投稿时间:2019-07-08  修订日期:2019-07-22
DOI:doi:10.3969/j.issn.1007-7545.2019.10.002
中文关键词:  硫化镍精矿        氧压酸浸
英文关键词:nickel sulfide concentrate  nickel  copper  iron  oxidative pressure leaching
基金项目:国家自然科学基金资助项目(51434001);国家重点基础研究发展计划项目(2014CB643405)
        
作者单位
谢铿 北京矿冶科技集团有限公司
刘三平 北京矿冶科技集团有限公司
王海北 北京矿冶科技集团有限公司
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中文摘要:
      以赞比亚某铜镍矿浮选得到的硫化镍精矿为研究对象,采用加压湿法冶金工艺处理,研究镍、铜、铁的浸出行为,考察了浸出温度、硫酸用量、氧分压、液固比、反应时间等因素的影响。在200 ℃、硫酸用量每吨精矿100 kg、氧分压0.5 MPa、液固比4︰1、反应时间3 h的优化条件下进行浸出,镍和铜的浸出率均大于99.5%。高温和高氧分压条件利于镍的浸出,镍浸出速度更快。维持上述条件不变,将氧分压增大到0.8 MPa时,仅需浸出1.5 h,镍的浸出率就可达到99%左右。
英文摘要:
      Nickel sulfide concentrate produced from copper-nickel ore in Zambia by flotation was treated by pressure hydrometallurgy. Leaching behaviors of nickel, copper and iron were studied. Effects of leaching temperature, sulfuric acid dosage, oxygen partial pressure, L/S and reaction time were investigated. Leaching rate of nickel and copper are both 99.5% above under the optimum conditions including temperature of 200℃, sulfuric acid dosage of 100 kg/t, oxygen partial pressure of 0.5 MPa, L/S=4/1, and reaction time of 3 h. Nickel extraction rises with increase of leaching temperature and oxygen partial pressure. It is feasible to leach nickel in a relatively shorter time under higher temperature and oxygen partial pressure. Leaching rate of nickel is about 99% after only 1.5 h with oxygen partial pressure rising to 0.8 MPa.
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