Slagging agent produced by high-purity vanadium-aluminium alloy and production method

Abstract

The invention discloses a slagging agent produced by a high-purity vanadium-aluminium alloy and a production method, and the slagging agent is high purity calcium vanadate. The method employs the calcium vanadate synthesized by a chemical method to substitute traditional lime and fluorite for being as the slagging agent, impurity content can be effectively reduced during an impurities removal process, compared with reagent grade lime and fluorite, the impurity content can be reduced by one magnitude order. According to the invention, the introduction of impurity can be effectively reduced, quality stabilization and control requirement of the vanadium-aluminium alloy product with high-purity can be satisfied, product purity can be effectively increased, calcium vanadate can be taken as a vanadium product, and can be taken as the slagging agent, cost of the slagging agent can be omitted, calcium vanadate also can substitute vanadium oxide in the reaction, and operation cost of vanadic anhydride can be reduced; when fluorite is taken as the slagging agent, fluoride can be generated during the reaction, so that environment pollution is generated, when the calcium vanadate is employed as the slagging agent, the product is only calcium aluminate which is in the slag, and no harmful fluoride is generated.

Description

technical field [0001] The invention belongs to the field of vanadium alloy production, in particular to a slagging agent for high-purity vanadium-aluminum alloy production and a production method. Background technique [0002] Vanadium-aluminum alloy is an important alloying element for the production of aerospace-grade titanium alloy materials, and has important applications in the production of titanium alloys. In the production of aviation-grade titanium alloy materials, the requirements for the impurities of added materials are very strict, so the production of high-purity vanadium-aluminum alloys is imperative. At present, there is no uniform standard for vanadium-aluminum alloys, and the standards of vanadium-aluminum alloys of the German GFE company are basically used as the standards for vanadium-aluminum alloys used in aerospace. The standard stipulates that the impurity elements should be controlled within: B≤0.003, C≤0.10, Cr≤0.10, Cu≤0.05, Fe≤0.4, Mg≤0.25, Mn≤0...

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Problems solved by technology

[0009] At present, when producing high-purity vanadium-aluminum alloys that meet the standards of the German GFE company, the slagging agents are all analytically pure fluorite or quicklime. The price of such reagent-grade products is expensive, and the price of fluorite can reach more than 30,000 yuan / ton. Greatly increased the production cost of vanadium aluminum alloy

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