Solution preparation method for producing electrolytic manganese or manganese dioxide from low-grade manganese oxide ores

[0036] Take 100g of manganese oxide ore powder with a manganese content of 25% and mix it with electrolytic manganese anolyte, leaching at 50°C for 1 hour, and filter to obtain presoak solution and presoak slag with 15% water content; Add lignite powder and mix well, then add 35g of concentrated sulfuric acid with a concentration of 95% and mix well, react with self-heating to a maximum temperature of 250°C and then mature for 2 hours, then use the above presoaking liquid to leach the cured material, the leaching temperature is 95°C, The leaching time is 60min, and the manganese leaching rate is 98.5%. The leached ore pulp is oxidized with manganese oxide ore powder, and rhodochrosite powder is used as a neutralizing agent to carry out oxidation neutralization and iron removal, after oxidation and neutralization, use a vulcanizing agent to remove heavy metal ions in the manganese sulfate solution, and then add an appropriate amount of electrolytic additives After the manganese me

[0038] Take 100g of manganese oxide ore powder with a manganese content of 15% and mix it with the electrolytic manganese anolyte, leaching at 90°C for 2 hours, and filter to obtain a presoak solution and a prepreg slag with a water content of 10%; Add bituminous coal powder and mix well, then add 30g of concentrated sulfuric acid with a concentration of 95% and mix well, react with self-heating to a maximum temperature of 150°C, and then mature for 2 hours, then use the above presoaking liquid to leaching the matured material, the leaching temperature is 30°C , leaching time 1h, manganese leaching rate 95.5%. The leached ore pulp is oxidized with manganese oxide ore powder, and rhodochrosite powder is used as a neutralizing agent to carry out oxidation neutralization and iron removal, after oxidation and neutralization, use a vulcanizing agent to remove heavy metal ions in the manganese sulfate solution, and then add an appropriate amount of electrolytic additives After the mang

[0040] Take 100g of manganese oxide ore powder with a manganese content of 25% and mix it with the electrolytic manganese dioxide anolyte, leaching for 1 hour at 50°C, and filter to obtain the presoak solution and prepreg slag with a water content of 15%; Add lignite powder at 5% and mix well, then add 35g of concentrated sulfuric acid with a concentration of 95% and mix well, react with self-heating to a maximum temperature of 250°C and then mature for 2 hours, then use the above presoaking liquid to leach the cured material at a temperature of 95 ℃, the leaching time is 60min, and the manganese leaching rate is 98.5%. The leached ore pulp is oxidized with manganese oxide ore powder, and rhodochrosite powder is used as a neutralizing agent to carry out oxidation neutralization and iron removal, after oxidation and neutralization, use a vulcanizing agent to remove heavy metal ions in the manganese sulfate solution, and then add an appropriate amount of electrolytic additives Afte