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公开(公告)号：US20120073407A1
公开(公告)日：2012-03-29
申请号：US13200782
申请日：2011-09-30
CPC分类号： C22B23/0438 , C22B23/0469 , Y02P10/212
摘要： An improved method for processing of nickel-bearing ores, particularly saprolite and limonite, to recover the valuable minerals contained therein, comprising leaching the ore with nitric acid to form a slurry; separating the iron values by precipitation, removing the iron values; forming a liquid/solid residue in which nickel, cobalt and magnesium are in solution, and manganese and aluminum, when present, are solid residues in oxide form; conducting a liquid-solid separation and removing the solids; and recovering the nickel, cobalt, and manganese from the liquid-metal concentrate. The leachate is recovered and nitric acid from the leachate is recycled.
摘要翻译： 一种用于处理含镍矿石，特别是腐泥土和褐铁矿的改进方法，用于回收其中所含的有价矿物质，包括用硝酸浸出矿石以形成浆料; 通过降水分离铁价值，去除铁价值; 形成其中镍，钴和镁在溶液中的液体/固体残余物，当存在时，锰和铝是氧化物形式的固体残余物; 进行液固分离并除去固体; 并从液态金属浓缩物中回收镍，钴和锰。 渗滤液回收，渗滤液中的硝酸被回收利用。
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公开(公告)号：US20100064854A1
公开(公告)日：2010-03-18
申请号：US12451229
申请日：2008-05-01
IPC分类号： C22B3/04
CPC分类号： C01G51/04 , C01F5/06 , C01F5/22 , C01G51/003 , C01G53/003 , C01G53/04 , C22B3/065 , C22B3/22 , C22B23/0438 , C22B23/0461 , Y02P10/234
摘要： An improved method for processing of nickel-bearing ores, laterite ores, saprolite and limonite ores, oxidic and sulfide ores, metallurgical wastes, and other metal-bearing materials, to recover the valuable minerals contained therein, comprising comminuting ore to a desired size; leaching the ore at about 70 C to 130 C for about 30 minutes to 4 hours with nitric acid, raising the temperature of the solution to form a liquid/solid residue in which nickel, cobalt and magnesium values are in solution, and iron, manganese, and aluminum are solid residues in oxide form; conducting a liquid-solid separation and removing the solids; and recovering the nickel, cobalt, and manganese from the liquid-metal concentrate. The leachate is recovered and the nitric acid from the leachate is recycled.
摘要翻译： 一种用于处理含镍矿石，红土矿石，腐泥土矿和褐铁矿矿石，氧化硫化矿石，冶金废物和其他含金属材料的改进方法，用于回收其中所含有价值矿物质，包括将矿石粉碎至所需尺寸; 用硝酸将矿石在约70℃至130℃下浸出约30分钟至4小时，使溶液的温度升高，形成溶液中镍，钴和镁的值的液/固残渣，铁，锰 ，铝是氧化物形式的固体残留物; 进行液固分离并除去固体; 并从液态金属浓缩物中回收镍，钴和锰。 回收渗滤液，回收利用渗滤液中的硝酸。
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