Method for producing manganese sulfate by leaching manganese alloy slag under normal pressure
A manganese alloy and manganese sulfate technology, applied in the field of manganese hydrometallurgy and hydrometallurgy, can solve the problems of depletion, environmental pollution, occupying a large area of space, etc., achieving high leaching rate, friendly natural environment and low production cost Effect
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Embodiment 1
[0053] Grind carbon-manganese-ferroalloy slag ore into mineral powder with an average particle size of more than 100 mesh, take 100g; use sulfuric acid solution with an initial acid concentration of 90g / L to adjust the slurry, and the liquid-solid ratio is 15:1; the slurry after adjustment Put it into the reaction vessel, control the temperature at 98°C; discharge the material after 120 minutes of reaction time; add a small amount of manganese alloy slag to the slurry after leaving the reaction vessel to neutralize most of the remaining acid, and then add an appropriate amount of CaO to neutralize The remaining small amount of residual acid until the pH value is between 6.5 and 7; then filter and wash; the leach residue obtained after filtering and washing is used as a raw material for preparing by-products such as molecular sieves; after the primary filtrate is added with purifier SDD to remove heavy metal ions, Perform secondary filtration and washing; finally, send the obtai...
Embodiment 2
[0055] Grind carbon-manganese-ferroalloy slag ore into mineral powder with an average particle size of more than 100 mesh, take 100g; use sulfuric acid solution with an initial acid concentration of 50g / L for slurrying, and the liquid-solid ratio is 8:1; the slurry after slurrying Add it into the reaction vessel, control the temperature at 50°C; control the pH value of the solution within a certain range during the leaching process, and discharge the material after 100 minutes of reaction time; add a small amount of manganese alloy slag to the slurry after leaving the reaction vessel, And get rid of most of the residual acid, then add an appropriate amount of CaO to neutralize the remaining small amount of residual acid, and adjust the pH value between 6.5 and 7; then filter and wash; the leaching residue obtained after filtering and washing is used as the preparation of by-products such as molecular sieves Raw materials: After the primary filtrate is added with purifying agent...
Embodiment 3
[0057] Grind manganese-silicon alloy slag ore into mineral powder with an average particle size below 100 mesh, take 100g; use sulfuric acid solution with an initial acid concentration of 30 / L to make slurry, and the liquid-solid ratio is 6:1; the slurry after mixing Add it into the reaction vessel, and control the temperature at 85°C; control the pH value of the solution within a certain range during the leaching process, and discharge the material after the reaction time is 80 minutes; add a small amount of manganese alloy slag to the slurry after leaving the reaction vessel. And get rid of most of the residual acid, then add an appropriate amount of CaO to neutralize the remaining small amount of residual acid, and adjust the pH value between 6.5 and 7; then filter and wash; the leaching residue obtained after filtering and washing is used as the preparation of by-products such as molecular sieves Raw materials: After the primary filtrate is added with purifying agent SDD to...
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