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投稿时间：2012-12-18 修订日期：2012-12-19 录用日期：2012-12-19 网络发布日期：2013-06-19
投稿时间：2012-12-18 修订日期：2012-12-19 录用日期：2012-12-19 网络发布日期：2013-06-19
中文摘要: 采用硫酸选择性浸出高含镁硫化镍精矿，考察了加酸量、液固比、反应时间、反应温度对浸出率的影响。结果表明，在每千克精矿加入150 mL浓硫酸、液固比1∶1、常温下反应0.5 h的条件下，镍、铜、钴浸出率分别为6.61%、6.67%、6.84%，精矿中MgO含量可以从10.80%降至5.57%，降镁后硫化镍精矿热值低于2 017 MJ/t，浸出液加入硫化钠可将浸出液中镍、铜降至5.2 mg/L、0.6 mg/L以下。
Abstract:High magnesium bearing nickel sulfide concentrate was selectively leached by sulfuric acid. The effects of dosage of sulfuric acid, ratio of liquid to solid (L/S), reaction time and temperature on leaching rate were investigated. The results show that the leaching rate of nickel, copper, and cobalt is 6.61%, 6.67% and 6.84%, respectively, and the MgO content is reduced from 10.80% to 5.57% under the optimum conditions including dosage of sulfuric acid of 150 mL for one kilogram concentrate, L/S of 1∶1, and leaching time of 0.5 h at room temperature. The smelting calorific value of de-magnesium nickel sulfide concentrate is less than 2 017 MJ/t. The concentration of nickel and copper in lixivium is reduced to 5.2 mg/L and 0.6 mg/L respectively after adding of sodium sulfide.
keywords: nickel sulfide concentrate acidic leaching de-magnesium leaching rate sodium sulfide Ni Cu Co
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| Author Name | Affiliation | |
| LU Sujun | Jinchuan Nickel Cobalt research engineering institute Jinchuan Gansu China | lsj206@126.com |
| YANG Fenjuan | ||
| MA Tianfei | ||
| DOU Yinli |
引用文本：
卢苏君,杨粉娟,马天飞,豆银丽.选择性浸出硫化镍精矿中的镁[J].有色金属（冶炼部分）,2013(7):23-26.
LU Sujun,YANG Fenjuan,MA Tianfei,DOU Yinli.Selective Leaching of Magnesium from Nickel Sulfide Concentrate[J].Nonferrous Metals (Extractive Metallurgy),2013(7):23-26.
卢苏君,杨粉娟,马天飞,豆银丽.选择性浸出硫化镍精矿中的镁[J].有色金属（冶炼部分）,2013(7):23-26.
LU Sujun,YANG Fenjuan,MA Tianfei,DOU Yinli.Selective Leaching of Magnesium from Nickel Sulfide Concentrate[J].Nonferrous Metals (Extractive Metallurgy),2013(7):23-26.
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