Method for producing tungsten-molybdenum product by processing tungsten-molybdenum symbiotic mixed ore

Abstract

The invention discloses a method for producing a tungsten-molybdenum product by processing tungsten-molybdenum symbiotic mixed ore. The method comprises the following steps of: 1) adding anionic surfactant into the tungsten-molybdenum symbiotic mixed ore in a solid-liquid volume ratio of 1:3; 2) performing solid-liquid separation after ball milling; 3) treating the filtered liquid in a wastewater treatment tank, and pumping the solid into a slurrying tank; 4) adding sodium hydroxide serving as a leaching agent and bauxite A2O3 serving as an oxidant into the slurrying tank in a solid-liquid system, regulating the pH value to 12.5, stirring and slurrying; 5) pumping the slurry mixture into a high-pressure leaching kettle, heating, reacting, filtering, washing, leaching filtrate, diluting the filtrate by adding water, and regulating the PH value to 2.5 by using acid; 6) adsorbing tungsten and molybdenum by using weak alkali macroporous anion resin D314; 7) resolving the resin by using aqueous ammonia; 8) adding magnesium chloride into the resolved solution to remove phosphorus, silicon and arsenic, and obtaining filtered solution by filtering; and 9) obtaining the tungsten-molybdenum product by using the filtered solution. The method has the advantages of low investment, low production cost, short process flow, high leaching and recovery rate, low impurity leaching rate, environment friendliness and energy conservation.

Description

technical field [0001] The invention relates to the technical field of producing tungsten and molybdenum products, in particular to a method for processing tungsten and molybdenum symbiotic mixed ore to produce tungsten and molybdenum products. Background technique [0002] The rare metal tungsten and molybdenum is an important basic material for the development of high technology, the realization of national modernization, and the construction of modern national defense. Increase the strength and toughness of steel, widely used in rails, structural steel of bridges and skyscrapers, and widely used as tool steel and other fields. Ferromolybdenum accounts for 70% of the entire molybdenum consumption market in China. The amount of tungsten used in ferro-tungsten and molybdenum accounts for 30% of the tungsten used in China. Mainly used for ultra-high hardness high-speed steel W 2 Mo 9 Gr 4 VCo 8 , die steel W 9 Mo 3 Cr 4 V, adding molybdenum to many tungsten steels ca...

AI Technical Summary

Problems solved by technology

Separation is still relatively difficult and requires a lot of cost. Among them, the selective precipitation method, which is the most widely used in my country, has the best recognized effect and the lowest cost, is an example: the cost in the process of reducing molybdenum is equivalent to 1 / 5 to 1 of the potential value. / 4, recovering molybdenum from molybdenum slag consumes a lot of cost, and considering the recovery factor, the potential value loss of molybdenum in the mixed concentrate is recovered through the tungsten-molybdenum wet method and the separation of tungsten and molybdenum in the smelting process. In addition, during the whole process of separating tungsten and molybdenum and subsequent extraction of molybdenum, roasting sulfur-containing molybdenum slag will also cause environmental pollution. Therefore, no matter from the perspective of economy, environment and strategic resources, the rational use of tungsten-molybdenum mixed ore All will become important issues in the field of tungsten and molybdenum metallurgy

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