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Method for treating mixture of laterite-nickel ore leaching residues and jarosite residues and application
The invention discloses a method for treating a mixture of laterite-nickel ore leaching residues and jarosite residues and application. The method comprises the following steps of: granulating the jarosite residues, drying, performing primary roasting, adding a reducing agent, and performing secondary roasting to obtain pellets containing metal simple substances; and performing water quenching, ball milling and magnetic separation on the pellets containing the metal simple substances to obtain iron, nickel and silicon-magnesium residue slurry. According to the method, the jarosite residues generated by laterite-nickel ore sulfuric acid normal-pressure leaching and iron removal by a jarosite method are fully utilized, Fe2O3 formed after decomposition is reduced by using pulverized coal by utilizing the characteristic that the jarosite residues are easy to decompose at high temperature, valuable metals such as iron and nickel are recovered by utilizing a water quenching, ball milling and magnetic separation process, and the jarosite residues are decomposed into silicon-magnesium residues with stable properties at high temperature, so that harmless treatment of the jarosite residues is realized, and the problem of treatment of tailings generated by low-grade laterite-nickel ore normal-pressure sulfuric acid leaching and the jarosite residues generated by iron removal is solved.
本发明公开了一种处理红土镍矿浸出渣和铁矾渣混合物的方法和应用，包括以下步骤：将铁矾渣进行造粒，烘干，进行一次焙烧，再加入还原剂，进行二次焙烧，得到含金属单质的球团；将含金属单质的球团进行水淬，球磨，磁选，得到铁、镍和硅镁渣浆料。本发明的方法充分利用了红土镍矿硫酸常压浸出和黄钠铁矾法除铁所产生的铁矾渣，利用铁矾渣高温下易分解的特性，将分解后形成的Fe2O3使用煤粉还原，再利用水淬球磨磁选工艺回收了铁和镍有价金属，将铁矾渣利用高温分解为性质稳定的硅镁渣，实现了铁矾渣的无害化处理，解决了低品位红土镍矿常压硫酸浸出的尾渣及除铁产生的黄钠铁矾渣的处置问题。
Method for treating mixture of laterite-nickel ore leaching residues and jarosite residues and application
The invention discloses a method for treating a mixture of laterite-nickel ore leaching residues and jarosite residues and application. The method comprises the following steps of: granulating the jarosite residues, drying, performing primary roasting, adding a reducing agent, and performing secondary roasting to obtain pellets containing metal simple substances; and performing water quenching, ball milling and magnetic separation on the pellets containing the metal simple substances to obtain iron, nickel and silicon-magnesium residue slurry. According to the method, the jarosite residues generated by laterite-nickel ore sulfuric acid normal-pressure leaching and iron removal by a jarosite method are fully utilized, Fe2O3 formed after decomposition is reduced by using pulverized coal by utilizing the characteristic that the jarosite residues are easy to decompose at high temperature, valuable metals such as iron and nickel are recovered by utilizing a water quenching, ball milling and magnetic separation process, and the jarosite residues are decomposed into silicon-magnesium residues with stable properties at high temperature, so that harmless treatment of the jarosite residues is realized, and the problem of treatment of tailings generated by low-grade laterite-nickel ore normal-pressure sulfuric acid leaching and the jarosite residues generated by iron removal is solved.
本发明公开了一种处理红土镍矿浸出渣和铁矾渣混合物的方法和应用，包括以下步骤：将铁矾渣进行造粒，烘干，进行一次焙烧，再加入还原剂，进行二次焙烧，得到含金属单质的球团；将含金属单质的球团进行水淬，球磨，磁选，得到铁、镍和硅镁渣浆料。本发明的方法充分利用了红土镍矿硫酸常压浸出和黄钠铁矾法除铁所产生的铁矾渣，利用铁矾渣高温下易分解的特性，将分解后形成的Fe2O3使用煤粉还原，再利用水淬球磨磁选工艺回收了铁和镍有价金属，将铁矾渣利用高温分解为性质稳定的硅镁渣，实现了铁矾渣的无害化处理，解决了低品位红土镍矿常压硫酸浸出的尾渣及除铁产生的黄钠铁矾渣的处置问题。
Method for treating mixture of laterite-nickel ore leaching residues and jarosite residues and application
处理红土镍矿浸出渣和黄钠铁矾渣的混合物的方法和应用
YUAN KE (author) / LIU HONG (author) / TAN SHIQI (author) / YE MINJIE (author) / TANG HONGHUI (author) / LIU XIQUAN (author) / LI CHANGDONG (author)
2021-10-22
Patent
Electronic Resource
Chinese
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