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投稿时间：2013-07-17 修订日期：2013-07-17 录用日期：2013-07-22 网络发布日期：2013-12-23
投稿时间：2013-07-17 修订日期：2013-07-17 录用日期：2013-07-22 网络发布日期：2013-12-23
中文摘要: 采用常压强化浸出红土镍矿，镍、钴浸出率可以提高到95%以上，且无废酸处理。浸出液进行两段除铁、铝得到铁渣；控制较高pH沉淀镍、锰获得纯净的硫酸镁溶液，再经浓缩、结晶、脱水制取无水硫酸镁。采用硫磺作还原剂，在真空回转窑内800 ℃常压热分解无水硫酸镁得到二氧化硫和活性氧化镁，二氧化硫制酸后用于浸出红土镍矿，一部分活性氧化镁作除铁铝和沉镍锰的中和剂，另一部分外销。
Abstract:Nickel laterite ore was strengthening leached with vitriol at atmospheric pressure. Nickel leaching rate rose to 95% above without waste acid treatment. Iron slag was produced from lixivium after iron and aluminum removal. Pure magnesium sulfate solution was produced from precipitation of nickel and manganese at a relatively high pH value. Magnesium sulfate anhydrous was prepared from magnesium sulfate solution by concentration, crystallization, and dehydration. Sulfur dioxide and active magnesium oxide were prepared by atmospheric pressure thermal decomposition of magnesium sulfate anhydrous in vacuum rotary kiln at 800 ℃ with sulphur as reductant. Sulphur was first used to make acid and then to leach nickel laterite ore. Active magnesium oxide was to remove iron and aluminum, precipitate nickel and manganese, or to be for sale.
keywords: nickel laterite ore vitriol atmospheric pressure strengthening leaching thermal decomposition active magnesium oxide
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基金项目:
| 作者 | 单位 | |
| 伍耀明* | 广西冶金研究院 | wyming4537@sina.com |
| Author Name | Affiliation | |
| wuyaoming | 不懂英文 | wyming4537@sina.com |
引用文本：
伍耀明.硫酸常压强化浸出红土镍矿新工艺研究[J].有色金属（冶炼部分）,2014(1):19-23.
wuyaoming.New Process of Atmospheric Pressure Strengthening Leaching for Nickel Laterite Ore with Vitriol[J].Nonferrous Metals (Extractive Metallurgy),2014(1):19-23.
伍耀明.硫酸常压强化浸出红土镍矿新工艺研究[J].有色金属（冶炼部分）,2014(1):19-23.
wuyaoming.New Process of Atmospheric Pressure Strengthening Leaching for Nickel Laterite Ore with Vitriol[J].Nonferrous Metals (Extractive Metallurgy),2014(1):19-23.
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