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Control method of carbon content in fev80 alloy

A control method and carbon content technology, applied in the field of metallurgy, can solve problems such as no public reports, and achieve the effect of easy operation

Active Publication Date: 2019-03-19
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] From the above disclosed technologies, the traditional metallurgical process (especially the steelmaking process) has a lot of technical reserves and solutions for the control of carbon content in different smelting stages. No public reports

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] at 8t V 2 O 5 The raw materials are smelted in three phases and the slag is discharged twice. Smelting Raw Material V 2 O 5 , Fe, Al, and lime have carbon contents of 0.01%, 0.06%, 0.13%, and 0.33%, respectively. For conventional smelting, the total electrification time is 88 minutes. After the third phase of smelting, the TV content in the slag is 1.30%, the ferrovanadium smelting yield is 96.8%, and the alloy carbon content is 0.15%.

Embodiment 2

[0025] at 8t V 2 O 5 The raw materials are smelted in three phases and the slag is discharged twice. Smelting Raw Material V 2 O 5 , Fe, Al, and lime have carbon contents of 0.01%, 0.06%, 0.13%, and 0.33%, respectively. In the third stage, 480kg of decarburizer FeO was mixed into the batching, and the total electrification time was 95min (extra electrification for 7min before casting). After the smelting, the TV content in the slag is 1.32%, the smelting yield of ferrovanadium is 96.6%, and the carbon content of the alloy is 0.08%.

Embodiment 3

[0027] at 3t V 2 O 5 The raw material is smelted according to the one-step process. After the smelting is completed, the slag and iron are produced together, and the smelting raw material V 2 O 5 The carbon contents of Fe, Al, and lime are 0.01%, 0.06%, 0.15%, and 0.36%, respectively. Add 100kg of decarburizer FeO and spread it on the bottom of the casting ingot mold, and the total power-on time is 25min. After the smelting, the TV content in the slag is 1.36%, the smelting yield of ferrovanadium is 96.3%, and the carbon content of the alloy is 0.07%.

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Abstract

The invention belongs to the metallurgy field, particularly relates to a control method for the carbon content of a FeV80 alloy, and aims at achieving the technical purpose of providing the control method for the carbon content of the FeV80 alloy. The control method comprises the following steps that raw materials including V2O5, aluminum particles, iron particles and lime are evenly mixed and added in a furnace to be smelted in batches, slag is discharged one time after each batch of smelting is over till all the raw materials enter the furnace and are smelted, mixed slag metal in the furnace is poured into an ingot mold, and cooling and crushing are conducted; and a decarburization agent needs to be added in the smelting or furnace discharging process. According to the method, the smelting raw materials are added in a smelting furnace body in batches according to different proportions, the alloy carbon content is effectively reduced by controlling the alloy inclusion source, adjusting the technology technique, adding the special decarburization agent and adopting other means, the qualification rate of alloy finished products can be increased, and meanwhile the special requirement of customers for low-carbon vanadium-iron alloys can be met.

Description

technical field [0001] The invention belongs to the field of metallurgy, and in particular relates to a method for controlling the carbon content of FeV80 alloy. Background technique [0002] As the most widely used vanadium microalloying master alloy in the iron and steel industry at present, the traditional vanadium-ferroalloy smelting is mainly based on the straight furnace one-step ferrovanadium smelting process or the tilting furnace multi-stage smelting process using vanadium oxide as raw material. , Ferrosilicon and other reducing agents are used to perform high-temperature thermal reduction of vanadium oxides, and the metal vanadium produced by the reaction quickly dissolves and settles with molten metal iron. According to the national standard of GB / T4139-2004 ferro-vanadium, according to the difference of iron content / vanadium content and impurity content in the reduction process, 8 different ferro-vanadium alloy grades can be obtained. Since FeV80 alloy products ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C27/02C22C1/06
CPCC22C1/06C22C27/025
Inventor 余彬孙朝晖程兴德杨斌陈海军熊开伟潘成张林唐红建梁彬
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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