Nickel sulfate solution by solvent extraction of copper, zinc, cobalt P507 technology application
nickel sulfate solution method of recovery of valuable metals including: chemical precipitation, solvent extraction, ion exchange method and chemical precipitation joint extraction with solvent extraction method. Chemical precipitation by sulfide precipitation, oxidation hydrolysis precipitation, precipitation after fluoride concentration crystal get products; In the extraction solvent removal impurities, solvent extraction of the final concentration crystal products; Ion exchange method, namely using cation or anion exchange resin adsorption removal impurities, the final concentration crystal products. Due to the amount of the impurity ions in the thick nickel sulfate solution, in order to achieve the rough nickel sulfate process refined, using hydrolysis to remove arsenic and iron oxide method to remove calcium and magnesium fluoride after nickel sulfate solution to concentrate, according to the extraction mechanism of copper, zinc, cobalt, nickel, directly select solution of P507 extraction and separation of copper, zinc, cobalt, reduced the copper and zinc removal process, greatly reducing the traditional refined nickel sulfate process.
extraction nickel sulfate solution, a two phase solution according to certain proportion into the centrifugal extraction machine, with the aid of the rotation of the drum, through the impeller to make two phase mixing and dispersing quickly, two phase solution fully mass transfer, mixing and mass transfer process. After mixing liquid under the action of vortex disk into the rotary drum, in under the action of centrifugal force, two phase fluid fast separation, clarification of two phase fluid respectively through their weir plate into the collection chamber and the tube was closed to derivation, respectively, to complete the two phase separation process. Load after the separation of organic phase extraction agent according to certain proportion to re-enter the centrifugal extraction machine reverse extraction, extraction solvent recycle.
related extraction equipment figure:
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