公开(公告)号：WO1979000142A1

公开(公告)日：1979-03-22

申请号：PCT/US1978000081

申请日：1978-09-11

Applicant: EARTH SCIENCES INC

Inventor： EARTH SCIENCES INC ,  PYRIH R ,  CARRINGTON O ,  RICKARD R

IPC: C01G43/02

CPC classification number: C22B60/026 ,  Y02P10/212

Abstract: In the field of metallurgy, specifically processes for recovering uranium from wet process phosphoric acid solution derived from the acidulation of uraniferous phosphate ores, problems of imbalance of iron exchange agents, contamination of recycled phosphoric acid with process organics and oxidizing agents, and loss and contamination of uranium product, are solved by removing organics from the raffinate after iron exchange conversion of uranium to uranous form and recovery thereof by ion exchange, and returning organics to the circuit to balance mono and disubstituted ester ion exchange agents; then oxidatively stripping uranium from the agent using hydrogen peroxide; then after ion exchange recovery of uranyl and scrubbing, stripping with sodium carbonate and acidifying the strip solution and using some of it for said scrubbing; regenerating the sodium loaded agent and recycling it to the uranous recovery step. Economic recovery of uranium as a by-product of phosphate fertilizer production is effected.

Abstract translation: 在冶金领域，特别是从酸性磷酸盐酸盐酸化的湿法磷酸溶液中回收铀的方法，铁交换剂不平衡的问题，再生磷酸与工艺有机物和氧化剂的污染以及损失和污染 的铀产物，通过将铀转化成铀形式的铁转化为铀形式并通过离子交换进行回收，从残液中除去有机物，并将有机物返回到回路以平衡单取代和二取代的酯离子交换剂; 然后用过氧化氢从试剂中氧化汽提铀; 然后在离子交换回收铀酰和洗涤后，用碳酸钠汽提并酸化条状溶液并使用其中一些进行洗涤; 再生钠负载剂并将其再循环到铀回收步骤。 作为磷肥生产副产品的铀经济复苏受到影响。