公开(公告)号：US06669852B2

公开(公告)日：2003-12-30

申请号：US09984452

申请日：2001-10-30

申请人： Isao Ishikawa ,  Haruo Washikita ,  Yasuo Kawai ,  Koyuki Mesuda

发明人： Isao Ishikawa ,  Haruo Washikita ,  Yasuo Kawai ,  Koyuki Mesuda

IPC分类号： B01D2101

CPC分类号： C22B21/0015 ,  B01D21/01 ,  C01F7/0653 ,  C22B3/12 ,  Y02P10/234

摘要： In order to provide a method for effectively separating red mud generated during alumina-extraction treatment of an alumina ore containing goethite as an iron component, the alumina ore containing goethite as an iron component is treated with an alkaline solution at 110-160° C., to thereby take up alumina components through extraction, and a settling aid formed of a water-soluble polymer including, as an effective component, a copolymer containing, as a monomer component, a vinylhydroxamic acid compound or a salt thereof (A) and having an average molecular weight of at least 2,000 is added to the resultant extract, to thereby settle the red mud for separation thereof.

摘要翻译： 为了提供一种有效分离作为铁成分的含有针铁矿的氧化铝矿石的氧化铝提取处理中产生的红泥的方法，将含有铁成分的铁精矿的氧化铝矿石用碱溶液在110-160℃下处理。 ，从而通过萃取吸收氧化铝组分，和由水溶性聚合物形成的沉淀助剂，其包括作为有效成分的含有作为单体组分的乙烯基异羟肟酸化合物或其盐（A）的共聚物，并且具有 向所得萃取液中加入至少2,000的平均分子量，由此沉淀红泥分离。