Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group ib metal
Patent
1975-04-01
1977-03-08
Vertiz, Oscar R.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group ib metal
423100, 423139, 4236585, 75101BE, 204195G, 204 1T, 324 30R, C01G 300, C01G 900, C01G 5300, G01N 2743
Patent
active
040112977
ABSTRACT:
An improved liquid-liquid extraction process for separating metals from each other in which an aqueous solution containing metals is mixed with an organic solution containing an extraction agent that releases hydrogen ions. A mixture of aqueous dispersed phase and an organic continuous phase is formed and the pH of the aqueous dispersed phase is controlled by the addition of a neutralizing agent to the mixture of the aqueous dispersed phase and the organic continuous phase on the basis of pH measurements made with pH electrodes immersed in the mixture of the phases. These direct measurements permit accurate adaptation of the rate of addition of the neutralizing agent to the rate at which hydrogen ions are being released so that the pH of the aqueous dispersed phase is kept substantially constant. The phases are separated from each other after transfer of metal ions from the aqueous to the organic phase, and the separated metal values are recovered.
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Back Erik Gustav
Leimala Raimo Juhani
Nyman Bror Goran
Hearn Brian E.
Outokumpu Oy
Vertiz Oscar R.
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