Manufacturing method of molybdenum or vanadium oxide briquetting for steelmaking alloying

A steelmaking alloying and oxide technology, applied in the direction of material forming presses, presses, manufacturing tools, etc., can solve the problem that the volatilization effect is not fully exerted, the yield of molybdenum is difficult to increase, and the yield of molybdenum or vanadium is low and other problems, to achieve the effect of simple and feasible method, good working environment and fast restoration speed
CN102605140BActive Publication Date: 2013-08-28SHIJIAZHUANG IRON & STEEL +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHIJIAZHUANG IRON & STEEL
Publication Date
2013-08-28

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Abstract

The invention discloses a manufacturing method of molybdenum or vanadium oxide briquetting for steelmaking alloying, which comprises the following steps of: adding an inhibitor, a fluxing agent and a reducing agent into molybdenum or vanadium oxide; uniformly mixing the raw materials; wetting the mixture by a water-soluble adhesive; and pressing the wet mixture into a block, wherein the inhibitoris magnesia, the fluxing agent is fluorite and the reducing agent is ferrosilicon powder or carborundum powder. In the oxide briquetting, MgO contained in the magnesia is in tightly contact with MoO3or V2O5 to generate magnesium molybdate or vanadium molybdate difficult to volatilize by the solid-phase reaction, and the volatilization of MoO3 or V2O5 can be effectively inhibited; and meanwhile, the magnesia is difficult to hydrate and a water soluble compound (water glass, brine, urea-formaldehyde resin or the like) can be used as the adhesive. The method is simple and easy to operate, has high yield of directly alloying elements and can be popularized and applied in steel and iron works. Not only can the energy be greatly saved, the CO2 emission is reduced and the environmental load is reduced, but also the alloying cost of molten steel can be greatly reduced.
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Description

technical field

[0001] The invention relates to a steelmaking alloying agent, in particular to a method for preparing a molybdenum or vanadium oxide briquette used for steelmaking alloying. Background technique

[0002] Molybdenum and vanadium are important alloying elements in steel. Molybdenum can significantly improve the thermal strength, hardenability and tempering stability of steel, and has a significant effect on improving the strength of steel; adding vanadium to steel can also significantly improve the performance of steel, increasing the strength by 10% to 20%, reducing the The weight of the structure is 15% to 25%. Vanadium is widely used in the production of high-speed steel and microalloyed steel. Steelmaking by direct alloying of oxides can save the ferroalloy production process, shorten the production cycle, save energy and reduce emissions, reduce environmental load, and greatly reduce the cost of molten steel alloying.

[0003] In the 1980s, domestic res...

Claims

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