公开(公告)号：US20140091042A1

公开(公告)日：2014-04-03

申请号：US14113421

申请日：2013-04-05

申请人： Yu Akama

发明人： Yu Akama

IPC分类号： C01F7/06

CPC分类号： C01F7/0653 ,  B01D21/01 ,  B03D3/06 ,  C01F7/06 ,  C01F7/066 ,  C02F1/56 ,  C02F2103/10 ,  C22B3/00 ,  C22B3/12 ,  C22B21/00

摘要： A washing method of red mud that is produced when an alumina-containing ore having a goethite to hematite mass ratio of 60/40 (goethite/hematite) or more in the iron component thereof is heat-treated with an alkaline solution at a temperature of 110° C. to 160° C. to obtain an aluminate liquor, including: mixing the red mud with a diluting fluid to obtain suspension that has an aluminum concentration of 95 g/L or less in terms of Al2O3; adding a flocculant to the suspension, wherein, the flocculant includes a polymer having a repeating unit derived from (meth)acrylic acid or a salt thereof and being substantially free from a repeating unit derived from vinylhydroxamic acid compound or a salt thereof; and settling and separating the red mud so as to wash the red mud.

摘要翻译： 当将具有针铁矿质量比为60/40（铁铁/赤铁矿）的铁配合物的铁精矿质量比的含有氧化铝的矿石在铁组分中时，产生的红泥的洗涤方法在碱溶液的温度下进行热处理 110℃至160℃以获得铝酸盐液体，其包括：将红泥与稀释液混合以获得以Al 2 O 3计的铝浓度为95g / L以下的悬浮液; 向悬浮液中添加絮凝剂，其中，絮凝剂包括具有衍生自（甲基）丙烯酸的重复单元或其盐并且基本上不含来自乙烯基异羟肟酸化合物或其盐的重复单元的聚合物; 并沉淀并分离红泥，以洗涤红泥。