公开(公告)号：US4530819A

公开(公告)日：1985-07-23

申请号：US536232

申请日：1983-09-28

申请人： Bela Czegledi ,  Mihaly Csovari ,  Miklos Erdelyi ,  Jozsef Illi ,  Lajos Stocker ,  Attila Szoke ,  Katalin Szabo nee Mogyorosi ,  Szilard Riederauer ,  Miklos Ormossy ,  Gyula Terenyi ,  Istvan Csurgai

发明人： Bela Czegledi ,  Mihaly Csovari ,  Miklos Erdelyi ,  Jozsef Illi ,  Lajos Stocker ,  Attila Szoke ,  Katalin Szabo nee Mogyorosi ,  Szilard Riederauer ,  Miklos Ormossy ,  Gyula Terenyi ,  Istvan Csurgai

IPC分类号： C01F7/58 ,  C01F7/06 ,  C01F7/22 ,  C01F7/26 ,  C01F7/32 ,  C01F7/56 ,  C01G49/06 ,  C01G49/10 ,  C22B1/00 ,  C22B3/00 ,  C22B3/10

CPC分类号： C22B1/00 ,  C01F7/0613 ,  C01F7/32 ,  C01F7/56 ,  C01G49/06 ,  C01G49/10 ,  C22B3/10 ,  C22B3/24 ,  C22B3/42 ,  Y02P10/234

摘要： The invention relates to an improved process for reducing the iron content of iron-, silicon- and aluminium-containing raw materials and for producing ferric oxide, optionally along with an alumina concentrate. According to the invention the iron content of mineral raw materials, e.g. bauxites, clay minerals, colliary rocks, red muds, etc. is eliminated by passing through one or more beds prepared from the unground but preferably prebroaken and sized raw material an aqueous hydrochloric acid solution, the concentration of which exceeds 100 g./lit., at a temperature below 90.degree. C., preferably at room temperature, optionally in the presence of a flocculating agent. By pyrolytic decomposition of the ferric chloride prepared ferric oxide can be produced. The bed residue of reduced iron content can be utilized in the Bayer process for producing alum earth, as a starting substance of ceramic industry or, after treating with sulfuric acid, dissolving in hydrochloric acid or water, elimination of silica, pyrolytic decomposition of the aluminium sulfate obtained, as an alumina concentrate.

摘要翻译： 本发明涉及一种用于降低铁，硅和铝的原料的铁含量以及任选地与氧化铝浓缩物一起生产氧化铁的改进方法。 根据本发明，矿物原料的铁含量，例如 铝土矿，粘土矿物，泥岩，红泥等通过一个或多个床，通过一个或多个床，从未研磨，优选预先浸泡和定尺寸的原料盐酸水溶液中去除，其浓度超过100g / L。 ，温度低于90℃，优选在室温下，任选地在絮凝剂存在下进行。 通过热分解制备的三氯化铁可制得氧化铁。 还原铁含量的床残渣可用于生产明矾土的拜耳法，作为陶瓷工业的起始物质，或用硫酸处理后，溶解在盐酸或水中，消除二氧化硅，热分解铝 获得的硫酸铝作为氧化铝浓缩物。