Method for comprehensive recovery of molybdenum and rhenium from high molybdenum-rhenium concentrate
A molybdenum concentrate and concentrate technology is applied in the field of comprehensive recovery of molybdenum and rhenium, which can solve the problems of low rhenium concentration in leaching solution, difficult to guarantee product quality, low rhenium leaching rate, etc., so as to reduce the consumption of acid and alkali in the process and ensure product quality. , The effect of avoiding the loss of molybdenum rhenium
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[0024] The molybdenum concentrate produced by Shaanxi Mining Co., Ltd. contains Mo-48%, Re-240g / t, and it is processed by the method of the present invention.
[0025] Take 100g of rhenium-containing molybdenum concentrate (Mo 47.38%, Re 240g / t) provided by Shaanxi Lianshi Mining Co., Ltd., add 130g of slaked lime, mix and granulate, control the particle size to Φ6-12mm, and then control the temperature to roast at 650°C for 3 hours to obtain the roasted material , Grind the roasted material, add 800ml of water to make a slurry, then add 138g of sulfuric acid with a concentration of 98% for leaching, the leaching temperature is 90°C, the time is 3h, filter and wash the slag to obtain 1200ml of leaching liquid (including washing water) and leaching slag, The leaching rates of molybdenum and rhenium were 98.66% and 98.12%, respectively. Add 150 g of roasting material to the leaching solution and stir at room temperature for 1 hour to obtain a neutralization slag and a neutraliza...
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