公开(公告)号：US3965238A

公开(公告)日：1976-06-22

申请号：US383246

申请日：1973-07-27

申请人： Tomokazu Tabata ,  Tetsuo Ikushige

发明人： Tomokazu Tabata ,  Tetsuo Ikushige

IPC分类号： C22B3/00 ,  C22B3/20 ,  C22B7/00 ,  C22B60/02 ,  B01D11/04

CPC分类号： C22B60/0282 ,  C22B60/0226 ,  C22B60/026

摘要： Uranium values are obtained from phosphate rock by acidifying phosphate rock containing uranium values and at least one other heavy metal with a mineral acid so as to obtain a crude acid, solvent extracting the crude acid with an organic solvent so as to separate a raffinate from a relatively pure, wet process phosphoric acid and treating said raffinate with a base so as to raise the pH to 1-2 whereby uranium hydroxide or phosphate and other heavy metal hydroxides or phosphates are coprecipitated. The uranium content of the coprecipitate after drying is at least as high as 0.3% which is comparable to that of uranium ores of the highest quality.

摘要翻译： 铀值通过酸化含有铀值的磷酸盐岩和至少一种其他重金属与无机酸从磷酸盐岩中获得，以获得粗酸，溶剂用有机溶剂萃取粗酸，从而将残液从 相对纯的，湿法磷酸，并用碱处理所述残液，以将pH升高至1-2，由此氢氧化铀或磷酸盐和其它重金属氢氧化物或磷酸盐共沉淀。 干燥后共沉淀物的铀含量至少高达0.3％，与最高质量的铀矿相当。