Method for removing impurity tungsten from cobalt solution
An impurity, iron and cobalt technology, applied in the field of material regeneration and recycling, can solve problems such as inapplicable tungsten removal treatment
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Embodiment 1
[0011] A method for removing impurity tungsten in cobalt liquid, the steps are: A, carrying out iron removal treatment on cobalt liquid to obtain iron removal liquid, and the cobalt liquid composition is WO 3 3+ <0.1g / L, the pH of the cobalt liquid is <3.0; B, the iron removal liquid obtained in step A is put into the ion exchange column, and the composition of the liquid after iron removal (sulfuric acid system): Co: 31.54g / L, W: 0.6 g / L, Fe: 0.003g / L, pH: 2-2.5. Use tungsten exchange adsorption resin to remove tungsten to obtain cobalt exchange liquid. The tungsten exchange adsorption resin is D314 large-pore weakly basic anion exchange resin, and the cobalt exchange liquid components are Co: 32.76g / L, W: 0.004 g / L, Fe: 0.0025g / L, pH: 3.5-4. C, adding a resolving agent to the tungsten exchange adsorption resin obtained in step B to obtain tungsten liquid and the resin after analysis; D, adding a transformation agent to the resolved resin in step C to obtain a transformed re...
Embodiment 2
[0013] A method for removing impurity tungsten in cobalt liquid, the steps are: A, carrying out iron removal treatment on cobalt liquid to obtain iron removal liquid, and the cobalt liquid composition is WO 3 3+ <0.1g / L, the pH of the cobalt solution is <3.0; B. The iron removal solution obtained in step A is put into an ion exchange column, and the composition of the solution after iron removal (sulfuric acid system): Co: 31.04g / L, W: 0.48 g / L, Fe: 0.016g / L, pH: 2-2.5. The cobalt exchange solution is obtained by using tungsten exchange adsorption resin to remove tungsten, and the tungsten exchange adsorption resin is D354 large-pore weakly basic anion exchange resin. The components of the cobalt exchange solution are Co: 30.41g / L, W: 0.002g / L, Fe: 0.003g / L, and PH: 3.5. C, adding a resolving agent to the tungsten exchange adsorption resin obtained in step B to obtain tungsten liquid and the resin after analysis; D, adding a transformation agent to the resolved resin in step ...
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