Resource utilization method for catalytic oxidation leaching of molybdenum and nickel from molybdenum-nickel ore

[0047] The molybdenum-nickel raw ore is crushed and ground to obtain a molybdenum-nickel ore powder with a particle size of 200-300 meshes. The active ingredients of the molybdenum-nickel ore: molybdenum is 6.1%, nickel is 3.2%, and sulfur is 23%. The mass percentage of 1000g is 98.3% sulfuric acid and 200g sodium nitrate were prepared into 5000ml aqueous solution, and the above-mentioned 2000g molybdenum-nickel ore powder and 5000ml solution were added to the reaction kettle, and 15g elemental iron powder was added to fully mix for oxidative leaching; after heating to 100°C, stop heating, because The reaction is an exothermic reaction, the temperature will naturally rise to 150°C, keep the reaction pressure at 0.7Mpa, the oxygen partial pressure at 0.35MPa, and react for 2.5 hours. After the reaction, the leachate with a total acid content of 260g / l was obtained by filtration, and the acid and salt were separated by membrane technology (selective diffusion dialysis membrane). ...

[0050] The molybdenum-nickel ore is crushed and ground to obtain molybdenum-nickel ore powder with a particle size of 200-300 meshes. The active ingredients of the molybdenum-nickel ore: molybdenum is 6.1%, nickel is 3.2%, and sulfur is 23%; the mass percentage of 900g is 98.3% % sulfuric acid and 200g sodium nitrate to prepare 5000ml aqueous solution, add the above-mentioned 2000g molybdenum-nickel ore powder and 5000ml solution into the reaction kettle, add 30g ferrous sulfate and mix thoroughly for oxidative leaching; stop heating after heating to 100°C, due to reaction It is an exothermic reaction, the temperature will naturally rise to 140°C, keep the reaction pressure at 0.6Mpa, oxygen partial pressure at 0.4MPa, and react for 3 hours. After the reaction, the total acid content in the leachate was filtered to be 250g / l. After the salt was separated by membrane technology (selective diffusion dialysis membrane), the total acidity of the separated liquid containing metal io...

[0053] The molybdenum-nickel ore is crushed and ground to obtain molybdenum-nickel ore powder with a particle size of 200-300 meshes. The active ingredients of the molybdenum-nickel ore: molybdenum is 6.1%, nickel is 3.2%, and sulfur is 23%; the mass percentage of 600g is 98% % sulfuric acid and 200g sodium nitrate to prepare 5000ml aqueous solution, add the above-mentioned 2000g molybdenum-nickel ore powder and 5000ml solution into the reaction kettle, add 36g copper sulfate and mix thoroughly for oxidative leaching; stop heating after heating to 120°C, because the reaction is Exothermic reaction, the temperature will naturally rise to 155°C, keep the reaction pressure at 0.8Mpa, oxygen partial pressure at 0.5MPa, and react for 2 hours. After the reaction was finished, the total acidity in the leachate obtained by filtration was 168g / l. After the salt was separated using membrane technology (selective membrane technology (selective diffusion dialysis membrane)), the total acid...