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RECOVERY OF METAL VALUABLES IN METAL MIXED SOLUTION BY PHOSPHATE SELECTIVE PRECIPITATION
RECOVERY OF METAL VALUABLES IN METAL MIXED SOLUTION BY PHOSPHATE SELECTIVE PRECIPITATION
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机译:磷酸盐选择性沉淀法回收金属混合溶液中的金属有价物
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摘要
A method is provided for recovering metal value from a mixed-metal aqueous solution by selective phosphate precipitation comprising adjusting the pH of the solution to be below a predetermined pH level at which level the metal value to be removed will not be precipitated; adding to the solution stoichiometric multiples of phosphate to precipitate the metal value to be removed at the predetermined pH level; maintaining the temperature of the solution at a predetermined constant level of precipitating the metal value; increasing the pH of the solution to the predetermined pH level to precipitate the phosphate of the metal value to be removed; maintaining the pH of the solution at the predetermined pH level.
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