红土镍矿资源全回收新工艺及清洁生产分析  

Full Resource Recovery of Laterite-Nickel Ore and Full Achievement of Clean Production

作　　者：伍耀明 黄进文 刘晨 陈克勤 陈均宁 黄强 范庆丰 陶媛 

机构地区：[1]广西冶金研究院,南宁530023

出　　处：《江西有色金属》2010年第3期152-155,共4页Jiangxi Nonferrous Metals

摘　　要：对红土镍矿进行高酸浸出,浸出滤液加入硅镁镍矿预中和,预中和滤液加入菱镁矿中和结晶除铁,除铁滤液加入菱镁矿沉镍,沉镍滤液浓缩结晶高纯硫酸镁,高纯硫酸镁生产下游高纯镁产品,除铁渣用于炼铁;浸出渣、预中和渣用于生产白炭黑的工艺.实现红土镍矿资源全回收.In order to manage a full resource recovery of the laterite-nickel ore and achieve the purpose ot clean production, the paper introduces the methods of leaching the Laterite-nickel ore with high acid, pre-neutralizing the lixiviuin with noumeite and collecting the filter liquor, removing iron from the liquor by using magnesite and collecting the nonferrous filtrate, applying magnesite to the filtrate to make nickel precipitate, and concentrating the nickel-free filtrate to obtain crystallized high-purity magnesium sulfate, which can produce downstream products of high-purity magnesium. In this way the iron residue can be used in iron-making, and the residue of leaching and pre-neutralization could produce silica white.

关 键 词：高酸浸出 预中和 结晶法除铁 叠加式沉镍 高纯硫酸镁 白炭黑 铁渣炼铁 

分 类 号：TF815[冶金工程—有色金属冶金] X756[环境科学与工程—环境工程]