公开(公告)号：US4006215A

公开(公告)日：1977-02-01

申请号：US616926

申请日：1975-09-26

申请人： Rotrou Alan Hall ,  William Edward Jones ,  Kohur Nagaraja Subramanian

发明人： Rotrou Alan Hall ,  William Edward Jones ,  Kohur Nagaraja Subramanian

IPC分类号： C01F11/00 ,  C01G49/02 ,  C22B3/44 ,  C22B15/00 ,  C22B19/20 ,  C22B21/00 ,  C22B26/20 ,  C22B26/22 ,  C22B34/12 ,  C22B34/32 ,  C22B47/00 ,  C22B58/00 ,  C01G51/04 ,  C01G53/04

CPC分类号： C22B58/00 ,  C22B15/0089 ,  C22B17/04 ,  C22B19/20 ,  C22B21/0015 ,  C22B23/0461 ,  C22B26/20 ,  C22B26/22 ,  C22B3/44 ,  C22B34/1259 ,  C22B34/32 ,  C22B47/00 ,  Y02P10/234 ,  Y02P10/236

摘要： Sulfate solutions containing at least one valuable metal from the group: Fe, Ni and Co, particularly solutions resulting from the leaching of lateritic ores or concentrates, are treated to recover the valuable metal. The latter is precipitated by treating the solution with magnesium hydroxide. The resulting magnesium-containing solution is treated with lime under controlled conditions to precipitate relatively fine particles of magnesium hydroxide and relatively coarse particles of gypsum. The difference in particle size is relied on to separate the magnesium hydroxide (for recycling) from the gypsum (which is calcined to regenerate lime).

摘要翻译： 含有至少一种有价值金属的硫酸盐溶液，分别为：Fe，Ni和Co，特别是由红土矿石或精矿浸出得到的溶液，以回收贵重金属。 后者通过用氢氧化镁处理溶液沉淀。 在控制条件下，用石灰处理得到的含镁溶液，以沉淀出相对较细的氢氧化镁颗粒和较粗的石膏颗粒。 依赖于颗粒尺寸的差异将氢氧化镁（用于再循环）与石膏（其被煅烧以再生石灰）分离。