Metho of recovering valuable metal in gold silver smelting furance waste lining brick
A technology of valuable metals and smelting furnaces, applied in the field of recycling various valuable metals, can solve problems such as difficult purification, long time required for carbonate conversion, complicated process, etc., and achieve the effect of reducing pollution
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[0024] at 4.5m 3 Prepare 1350 kg of 26% sulfuric acid aqueous solution in the leaching tank, slowly add 200 kg of finely ground waste brick powder under the condition of strong stirring, complete the addition within 0.5h~1.0h, continue to react for 2h~3h, exothermic reaction, the temperature is constant Maintain 80°C~100°C, then stop stirring, let it settle for 8h~12h, and use a siphon with a float to discharge the clarified MgSO 4 concentrated solution. Add 1000kg of water to the slurry in the leaching tank to dilute, add 25ppm of polyacrylamide flocculant under stirring condition, then let it settle for 10min-20min, and siphon out the clarified MgSO 4 solution. Add 1000 kilograms of clear water to the slurry in the leaching tank, filter after stirring, and wash to obtain 74 kilograms of wet materials with a water content of 47%;
[0025] Combine the above magnesium sulfate solutions, neutralize with light-burned magnesium oxide powder to adjust the pH value to 6-7, at thi...
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