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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[0023] Example one
[0024] At 4.5m 3 Prepare 1350 kilograms of 26% sulfuric acid aqueous solution in the leaching tank, slowly add 200 kilograms of ground waste brick powder under vigorous stirring, and complete the addition within 0.5h to 1.0h. Continue the reaction for 2h to 3h, exothermic reaction, the temperature remains constant Maintain 80℃~100℃, then stop stirring, let stand and settle for 8h~12h, use siphon with float to discharge clear MgSO 4 Concentrated solution. Add 1000 kg of clean water to the leaching tank pulp to dilute, add 25ppm of polyacrylamide flocculant under stirring conditions, and then let it settle for 10min~20min, siphon out the clarified MgSO 4 Solution. Then add 1000 kg of clean water to the leaching tank slurry, filter and wash after stirring, to obtain 74 kg of wet material with 47% water content;
[0025] Combine the above-mentioned magnesium sulfate solutions and neutralize with light-burned magnesium oxide powder to adjust the pH to 6-7. At this ...
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