钨冶炼除磷渣中浸出钼和钨研究

doi:10.11896/cldb.21120218

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Abstract Phosphorus removal slag from tungsten smelting was an important recycling resource of Mo and WO₃. A method of thermal pressure leaching with sodium carbonate and sodium hydroxide was proposed to leach Mo and WO₃ from phosphorus removal slag from tungsten smelting. The results show that the synergistic leaching with sodium carbonate and sodium hydroxide, the leaching rate of Mo and WO₃ was raised substantially. Effect of leaching agent dosage of sodium carbonate and sodium hydroxide, leaching time, leaching temperature, leaching liquid to solid rate, leaching stirring speed on the leaching rate of Mo and WO₃ were investigated. The optimum processes conditions are as follow: 250% theoretical dosage of sodium carbonate sodium carbonate, 15% theoretical dosage of sodium hydroxide, leaching time 2 h, leaching temperature 188 ℃, leaching liquid to solid rate 3∶1, leaching stirring speed 80 r/min, the leaching rate of Mo and WO₃ were reached 99.19%, 99.11%, respectively. Under the same optimum processes conditions, an industrial leaching test of phosphorus removal slag was proposed, the leaching rate of Mo and WO₃ were higher than 98.50%, 98.40%, respectively, and the content of Mo and WO₃ on leaching slag were less than 0.16%, 0.20%, respectively.

Key words： tungsten smelting phosphorus removal slag synergistic leaching with sodium carbonate and sodium hydroxide leaching rate

Published: 10 August 2023 Online: 2023-08-07

CLC number:

TF84

Fund:National Natural Science Foundation of China (51864017).

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	ZENG Bin
	ZENG Xiangrong
	HUANG Wanfu

Cite this article:

ZENG Bin,ZENG Xiangrong,HUANG Wanfu. Study on Leaching Molybdenum and Tungsten Processes of Phosphorus Removal Slag from Tungsten Smelting[J]. Materials Reports, 2023, 37(15): 21120218-5.

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http://www.mater-rep.com/EN/10.11896/cldb.21120218 OR http://www.mater-rep.com/EN/Y2023/V37/I15/21120218

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