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P229分馏萃取制备6N级硫酸镍的方法技术

2017-09-22 16:05:11 来源:齐鲁在线 编辑:K027_小凯乐

P229分馏萃取制备6N级硫酸镍的方法技术
本发明专利技术公开一种P229分馏萃取制备6N级硫酸镍的方法,属于制备高纯硫酸镍的技术领域。以2N~3N工业级硫酸镍水溶液为料液,二(2‑乙基己基)膦酸(简称P229)为萃取剂。由分馏萃取分离NaNi/NiMgCaCoMnCu、分馏萃取分离Na/Ni和分馏萃取分离Ni/MgCaCoMnCu组成。分馏萃取分离Na/Ni与分馏萃取分离Ni/MgCaCoMnCu串联。顺利实现镍与铜、锰、钴、钙、镁、钠等金属元素的分离,直接制备6N级硫酸镍。镍的收率高达94%~96%。本发明专利技术具有分离产品硫酸镍的纯度高、有价金属元素的收率高、试剂消耗少、工艺流程短、生产成本低等优点。
Method for preparing 6N grade nickel sulfate by P229 fractional extraction
The invention discloses a method for preparing 6N grade nickel sulfate by P229 fractionation extraction, belonging to the technical field of preparing high-purity nickel sulfate. From 2N to 3N industrial grade nickel sulfate solution as liquid material, two (2 ethylhexyl) phosphonic acid (P229) as extractant. Ni/MgCaCoMnCu is separated by fractionation, extraction, separation, NaNi/NiMgCaCoMnCu, fractionation, extraction, separation, Na/Ni, fractionation, extraction. Fractionation, extraction, separation, Na/Ni and fractionation, extraction, separation, Ni/MgCaCoMnCu, tandem. The separation of nickel, copper, manganese, cobalt, calcium, magnesium, sodium and other metal elements was carried out, and nickel sulfate 6N was prepared directly. The yield of nickel is up to 94% ~ 96%. The present invention has the advantages of high purity of nickel sulfate for separating products, high yield of valuable metal elements, less reagent consumption, short process flow and low production cost.