Method for smelting low-aluminum high-vanadium iron

A smelting method and high-ferro-vanadium technology, applied in the direction of improving process efficiency, etc., can solve the problems of limited use, difficult reaction, low recovery rate, etc., and achieve the effects of wide product control range, reaction control, and easy reaction

Active Publication Date: 2011-08-10
锦州钒业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is to provide a low-aluminum and high-vanadium iron smelting method to solve the problems of difficult control of the reaction, low recovery rate, large amount of aluminum in the alloy, and limited use in the existing one-step reaction outside the furnace.

Method used

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  • Method for smelting low-aluminum high-vanadium iron
  • Method for smelting low-aluminum high-vanadium iron

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] 1. First, the smelting operation outside the furnace. Mix 300 kg of vanadium pentoxide, 120 kg of aluminum powder, and 100 kg of vanadium iron slag as a mixture and put it on the operation table in front of the furnace, and put 18 kg of scrap steel into the electric arc furnace. Take 150 kilograms of the mixture from outside the furnace and spread it on the bottom of the electric arc furnace, and ignite it with an open flame of 1 kilogram of potassium chlorate and magnesium.

[0014] 2. Manually add the remaining materials outside the furnace for further reaction. After the reaction is completed, high-vanadium iron and slag are generated, and the slag is not discharged.

[0015] 3. The operation steps of the reduction period are lowering the electrode, feeding the electricity, melting and reducing, sampling and dumping the slag.

[0016] Feeding electricity: Take 340 kg of vanadium pentoxide and 630 kg of lime and mix them as the materials for the reduction period and go down ...

Embodiment 2

[0022] 1. Firstly, the smelting operation outside the furnace. Mix 270 kg of vanadium pentoxide, 135 kg of aluminum powder, and 130 kg of vanadium iron slag as a mixture and put it on the operation table in front of the furnace, and put 24 kg of scrap steel into the electric arc furnace. Take 150 kilograms of the mixture from outside the furnace and spread it on the bottom of the electric arc furnace, and ignite it with an open flame of 1 kilogram of potassium chlorate and magnesium.

[0023] 2. Manually add the remaining materials outside the furnace for further reaction, reflecting that the slag will not be discharged after the end.

[0024] 3. The operation steps of the reduction period are lowering the electrode, feeding the electricity, melting and reducing, sampling and dumping the slag.

[0025] Feeding of electricity: Take 350 kg of vanadium pentoxide and 750 kg of lime and mix them as materials in the reduction period and put them into the electric arc furnace, and add 30 kg...

Embodiment 3

[0031] 1. First, the smelting operation outside the furnace. Put 300 kg of vanadium pentoxide, 180 kg of aluminum powder, and 130 kg of vanadium iron slag on the operation table in front of the furnace. Put 24 kg of scrap steel into the electric arc furnace and take it out of the furnace. 150 kilograms of the French mixture was spread on the bottom of the electric arc furnace and ignited with an open flame of 1 kilogram of potassium chlorate and magnesium.

[0032] 2. Manually add the remaining materials outside the furnace for further reaction, reflecting that the slag will not be discharged after the end.

[0033] 3. The operation steps in the reduction period are feeding electricity, melting reduction, sampling and dumping.

[0034] Feeding of electricity: Take 300 kg of vanadium pentoxide and 700 kg of lime and mix them as materials for the reduction period and go down to the electric arc furnace, and add 28 kg of scrap steel.

[0035] Melting reduction: With the input of the mixt...

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Abstract

The invention discloses a method for smelting low-aluminum high-vanadium iron. The method comprises the following steps of: 1, smelting by adopting an outside furnace process, mixing vanadium pentoxide, aluminum powder, scrap steel, vanadium iron slag or lime, igniting and reacting to generate high-vanadium iron and furnace slag; and 2, uniformly mixing vanadium pentoxide and lime at a reducing stage by adopting an electric furnace process, putting the mixture into an electric arc furnace, adding scrap steel, adding industrial silicon and ferro-silico aluminum depleted furnace slag after the material is in a molten state, deslagging when the vanadium content of the furnace slag is below 0.5 percent, extracting an alloy sample and analyzing vanadium and silicon for monitoring before deslagging, putting vanadium pentoxide and lime into the furnace at a refining stage, electrifying to refine and pouring with a ladle after qualification is determined. The method has the advantages that aluminothermic process smelting is integrated with electro-silicothermic process smelting, chemical reaction heat of vanadium pentoxide and aluminum is fully utilized, furnace slag with high vanadium content is depleted, reduced and refined in a three-phase electric arc furnace to obtain high-vanadium low-aluminum qualified high-vanadium iron, the vanadium content of discharged furnace slag is lower than 0.5 percent, and the smelting yield is over 95 percent.

Description

Technical field [0001] The invention relates to a smelting method of low-aluminum and high-vanadium iron. Background technique [0002] As an alloy additive of steel, ferrovanadium can change the physical properties of steel and is widely used. Ferrovanadium is divided into FeV40, FeV50, FeV80 grades, of which FeV80 ferrovanadium demand is increasing year by year. At present, FeV80 ferro-vanadium is mainly produced by the out-of-furnace method. Its advantage is simple operation. However, due to the exothermic reaction of vanadium pentoxide and aluminum, the reaction is intense, difficult to control, and the recovery rate is low, at 89%— Between 92%. Summary of the invention [0003] The invention aims to provide a low-aluminum and high-vanadium iron smelting method to solve the problems of difficult reaction control, low recovery rate, large aluminum content in alloy and limited use due to the existing one-step reaction outside furnace method. [0004] The technical solution of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C27/02C22C33/04C22C38/12C22B5/04
CPCY02P10/20
Inventor 齐牧崔传海赵华惠兆生侯继宏刘志秋鲁少冲
Owner 锦州钒业有限责任公司
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