Method for extracting tungsten from low-grade ferberite
A low-grade tungsten ore technology, applied in the field of tungsten extraction, can solve the problems of difficult industrialization, complex leaching conditions, and easy sintering of materials, and achieve the effects of simplifying the leaching process, good material fluidity, and simplified processes
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Embodiment 1
[0041] Weigh 100g tungsten ore into an electromagnetic sample preparation crusher. After processing, the tungsten ore will become powder with a particle size of about 100μm. Add 0.20 times the amount of soda ash, 0.03 times the magnesium chloride and 0.11 times the sodium chloride. , Mix the auxiliary materials and the finely ground ore sample evenly, heat it to 780℃ in a Maffei furnace, keep it for 60 minutes, and cool down with the furnace, and process it into a particle size of 100-150μm with an electromagnetic sample preparation crusher. Hour 2 minutes 45 seconds, ultrasonic water immersion, leaching in a water bath at 70 ℃ for 45 minutes, the leaching liquid solid ratio is 3:1 (mL / g), filtering and analyzing the content of silicon and phosphorus impurities in the filtrate, the result is Si: 8.21mg / L, P: 6.28mg / L. The filter cake is washed once with 1.5 times the water, the filter residue is dried and weighed, and the WO in it is sampled and analyzed 3 Content, and calculat...
Embodiment 2
[0047] Weigh 100g tungsten ore and pour it into an electromagnetic sample preparation crusher. After processing, the tungsten ore will become powder with a particle size of about 100μm. Add 0.22 times the amount of soda ash, 0.10 times sodium chlorate and 0.05 times magnesium chloride. , Mix the auxiliary materials and the finely ground ore sample evenly, heat it to 800 ℃ in a Maffei furnace, and keep it for 30 min. After cooling with the furnace, use an electromagnetic sample preparation crusher to process it to a particle size of 100-150 μm. At 2 minutes and 30 seconds, add the tungsten-containing leaching solution of Example 1 for ultrasonic cycling leaching, fine-tune the pH to 9-10 with dilute hydrochloric acid, leaching for 30 minutes at 75°C in a water bath, the leaching liquid-to-solid ratio is 3:1 (mL / g), filter and filter The cake is washed once with 1.5 times of water, the filter residue is dried and weighed, and the WO in it is sampled and analyzed 3 Content, and cal...
Embodiment 3
[0052] Weigh 100g tungsten ore into an electromagnetic sample preparation grinder, process the tungsten ore into powder with a particle size of about 100μm, add 0.18 times the amount of soda ash, 0.12 times sodium sulfate and 0.05 times magnesium sulfate , The auxiliary materials and the finely ground ore sample are mixed uniformly, heated to 850 ℃ in a Maffei furnace, and kept for 45 minutes. After cooling with the furnace, they are processed into a particle size of 100-150 μm with an electromagnetic sample preparation crusher. Hour 1 minute 45 seconds, ultrasonic water immersion, leaching in a water bath at 70 ℃ for 60 minutes, the leaching liquid to solid ratio is 3:1 (mL / g), after filtration, the filter cake is washed once with 1.5 times the water, the filter residue is dried and weighed. Sampling analysis of WO 3 Content, and calculate the extraction rate of tungsten. The filter residue analysis result is 0.15%, and the calculation method of the tungsten extraction rate is...
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