Production technique of high-purity potassium permanganate and manganese dioxide, and carbon dioxide reaction tower
A technology of manganese dioxide and potassium permanganate, which is applied in the direction of manganese oxide/manganese hydroxide, manganate/permanganate, etc., can solve the problems of high energy consumption and cost, complex production process, and low resource utilization rate, etc. problems, to achieve the effect of convenient operation and maintenance, low production cost and high hydrolysis efficiency
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Embodiment 1
[0071] Stir 500 kg of 80 mesh manganese ore containing 80% manganese dioxide and stir fry 580 kg of potassium hydroxide with a mass ratio of 90% to a molten state. After the dark green material is granular and cooled, it is then crushed to 80 mesh; Roast at 240°C for 1 hour; the roasted ones are dark green, add 3 parts of 4% potassium hydroxide aqueous solution to keep the pH value at 13, stir with 1 part of the roasted product (quality), and the water temperature is 100°C until the potassium manganate is completely Dissolve, take the supernatant as the initial solution of potassium manganate; draw the initial solution of potassium manganate into the filter for filtration or vacuum filtration to obtain the potassium manganate solution, and pump the potassium manganate solution into the barrel 1 of the reaction tower At the same time, the filtered flue gas is also pumped into the cylinder 1 by the air pump 13 for disproportionation reaction, the liquid flows into the circulation...
Embodiment 2
[0074] 400kg containing manganese dioxide 80% 80 mesh anode mud of manganese electrolytic cell stir fry 500kg molten state mass ratio content is 90% potassium hydroxide, after the dark green material is granular cooling, pulverize to 100 mesh again; Roast at 220°C for 10 hours; when the roasted product is dark green, add 4 parts of 5% (mass ratio) potassium hydroxide aqueous solution to adjust the pH value to 14, stir with 1 part of the roasted product (mass), until Potassium manganate is completely dissolved, and the supernatant is taken as the initial solution of potassium manganate; the initial solution of potassium manganate is pumped into a filter for filtration or vacuum filtration to obtain potassium manganate solution, and the potassium manganate solution is pumped into the cylinder of the reaction tower 1, at the same time, the filtered flue gas is also pumped into the cylinder 1 by the air pump 13 for disproportionation reaction, and then pumped back into the cylinder...
Embodiment 3
[0077] Stir 572kg of 150 mesh manganese ore powder containing 70% of manganese dioxide and fry 666kg of potassium hydroxide with a mass ratio of 90% in molten state. Roast at 120°C; the roasted product is dark green, add 3 parts of 8% potassium hydroxide aqueous solution, keep the pH value at 13.5, stir with 1 part of the roasted product (mass), until the potassium manganate is completely dissolved, take the The clear liquid is the initial liquid of potassium manganate; the initial liquid of potassium manganate is sucked into a filter to filter or vacuum filtered to obtain a potassium manganate solution, and the potassium manganate solution is pumped into the barrel 1 of the reaction tower, and the filtered smoke The gas is also pumped into the barrel 1 through the air pump 13 to carry out the disproportionation reaction, and is drawn back into the barrel 1 by the circulation pump 6 for circulation; the unreacted carbon dioxide gas enters the circulation box 4 through the gas o...
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