| abstract |
The invention discloses a method for purifying a cobalt chloride solution. The method comprises adding high-purity ferrous chloride to the cobalt chloride solution to obtain a mixed solution, stirring the mixed solution, and raising the temperature to 45 °C. After ~50°C, cobalt oxyhydroxide is added to the mixed solution to oxidize the divalent iron ions in the solution to obtain an oxidized mixed solution, and then the pH value of the oxidized mixed solution is adjusted with liquid alkali to obtain an adjusted Mix the solution, finally, filter and adsorb to obtain the purified cobalt chloride solution; in this way, the present invention can utilize the adsorption effect of colloid to absorb the solid particles and oil in the cobalt chloride solution at the same time, so that the solid particles are less than 30 mg /L, the oil content is less than 10 mg/L, so that the cobalt chloride solution is purified and the quality of the subsequent process is improved. The invention has a simple process and greatly reduces the production cost. |