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Composite iron alloy for producing vanadium iron and vanadium by using silicon barium iron alloy as reducing agent

A ferroalloy and reducing agent technology, applied in the field of steelmaking materials, can solve the problems of affecting economic benefits, increasing steelmaking costs, and no promotion

Active Publication Date: 2013-11-20
谢廷声
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When carbon is used as a reducing agent, only 4-6% carbon (the same as the mass percentage below) high-carbon ferrovanadium can be obtained, and high-carbon ferrovanadium cannot be used for most alloy steels, so this method has not been promoted
The price of silicon and aluminum is relatively expensive. Using silicon and aluminum or using aluminum reducing agent to produce ferrovanadium has high production cost, which increases the cost of steelmaking and affects economic benefits.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Raw material: Vanadium pentoxide V 2 o 5 >93% powder. Silicon barium iron Si40%, Ba20% particle size 5-30㎜. Steel shavings, lime CaO>85% particle size 5-8㎜.

[0011] Ratio of ingredients: vanadium pentoxide 100, silicon barium iron 50, lime 6, smelting in submerged arc furnace. The composition of ferrovanadium in production is V80%, C 0.25%, the balance is Fe, and the recovery rate of vanadium is 98%.

[0012] The original aluminum powder was used as the reducing agent with 48kg of aluminum powder. The aluminum consumption per ton is 870kg, nearly 16,000 yuan / t. However, using ferrosilicon barium for reduction consumes 900kg per ton, about 6000 yuan. The cost per ton is reduced by about 10,000 yuan. While the recovery rate of vanadium is slightly increased, the power consumption is around 16000KW.h.

Embodiment 2

[0014] Ingredients ratio per ton: vanadium pentoxide 400kg, vanadium slag (V 2 o 5 16%) 600kg, silicon barium 300kg, and lime 600kg are put into the submerged arc furnace for smelting at the same time, and the electricity consumption is 12000KW.h. The product composition is V31%, C 0.3%, and the balance is Fe. The reducing agent ferrosilicon vanadium is about 2000 yuan. The original ferrosilicon is 370kg, aluminum grains are 100kg, the total is 4500 yuan / t, and the cost is reduced by about 2500 yuan per ton. The iron in the alloy comes from the metallic iron and iron oxide in the vanadium slag and the iron in the ferrosilicon barium.

Embodiment 3

[0016] Ratio of ingredients: vanadium slag 80, silica 85, barite 40, steel scrap 5, coke 70 In the electric arc furnace, silica, barite, steel scrap and coke are first put into the furnace to smelt silicon barium iron (liquid), and then The vanadium slag is put into the furnace for smelting, and the staged feeding method is adopted. It is also possible to smelt vanadium slag and ferrosilicon barium at the same time according to the proportion. If it is produced in a submerged arc furnace, first put the raw material of ferrosilicon barium and reducing agent into the furnace, smelt for more than 30 minutes, and then put the vanadium slag around the electrode to form the ferrosilicon alloy, and let the ferrosilicon alloy reduce the vanadium slag to produce Silicon-barium-vanadium-iron alloy.

[0017] Alloy composition: Si35%, Ba18%, V9%, C 1.0%, balance Fe.

[0018] I have applied for "Vadium-silicon-barium-iron composite alloy used as alloying agent for steelmaking and its pro...

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Abstract

The invention provides a composite iron alloy, namely a novel reducing agent, namely, silicon barium iron alloy, for producing vanadium iron and vanadium. The composite iron alloy for producing the vanadium iron and the vanadium in a reducing electric furnace by using the silicon barium iron alloy as a reducing agent is low in carbon content (C less than or equal to 2%), is low in production cost and achieves better economic benefit and social benefit.

Description

technical field [0001] The invention relates to a method for producing steel-making materials—vanadium ferroalloy and vanadium composite ferroalloy. Background technique [0002] Vanadium is mainly used as an alloying element in steelmaking. Vanadium can refine the grains of steel, improve the hardness and wear resistance of steel, improve the tensile strength and heat resistance, and improve the machinability of steel. Vanadium is a very beneficial element in steel. [0003] In steelmaking, vanadium is mainly added to steel as vanadium-iron alloy to achieve vanadium alloying. At present, the conventional production method of ferrovanadium is to use vanadium pentoxide as raw material, and silicon and aluminum or aluminum as reducing agent to smelt ferrovanadium in reduction electric furnace (submerged arc furnace / electric arc furnace). That is to say, the production of ferrovanadium by electric silicothermal method or aluminothermic method. When carbon is used as a re...

Claims

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Application Information

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IPC IPC(8): C21B15/02C22C33/04C21C7/04
Inventor 谢廷声
Owner 谢廷声