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Pouring method of ferro-vanadium alloy

A vanadium ferroalloy and casting method technology, applied in the field of metallurgy to achieve the effect of improving crushing performance and changing shape

Active Publication Date: 2020-06-02
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Judging from the above-mentioned disclosed technologies, they mainly focus on the preparation method and process of vanadium-iron alloy at present, and there are few reports on the casting method and its control method in the smelting process of vanadium-iron alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add aluminum and iron according to 0.9 times and 0.85 times of the theoretical addition amount, and add lime according to 15% of the total slag amount, and then combine with vanadium oxide (V 2 o 5 and V 2 o 3 The weight ratio of the slag is 1:1) and put into the smelting electric furnace after uniform mixing, and the smelting operation is carried out by using electrode arc ignition; when the vanadium content in the slag is reduced to 1.5%, the smelting ends, and the slag in the electric furnace is tipped to the pre-added reduction mixed (the weight ratio of aluminum and lime is 1:1, and the amount of aluminum is 1.0 times of the theoretical addition amount) in the casting ingot mold to carry out the secondary deep reduction of slag, and recover the obtained primary alloy cake; after the slag is discharged, use The ingot mold with a diameter-to-height ratio of 5:1 performs graded casting and cooling of the molten alloy liquid in the electric furnace at a superheat of ...

Embodiment 2

[0035] Add aluminum and iron according to 1.0 times and 0.90 times of the theoretical addition amount respectively, and add lime according to 10% of the total slag amount, and then mix with vanadium oxide (V 2 o 5 and V 2 o 3 The weight ratio of the slag is 2:1) and put into the smelting electric furnace after uniform mixing, and the smelting operation is carried out by using electrode arc ignition; when the vanadium content in the slag is reduced to 3.5%, the smelting is completed, and the slag in the electric furnace is tipped to the pre-added reduction mixed (the weight ratio of aluminum and lime is 1:1, and the amount of aluminum is 1.1 times the theoretical addition amount) in the casting ingot mold to carry out the secondary deep reduction of slag, and recover the obtained primary alloy cake; after the slag is discharged, use The ingot mold with a diameter-to-height ratio of 7:1 performs graded casting and cooling of the molten alloy liquid in the electric furnace at a...

Embodiment 3

[0038] Add aluminum and iron according to 1.05 times and 0.95 times of the theoretical addition amount respectively, and add lime according to 5% of the total slag amount, and then combine with V 2 o 5 After uniform mixing, put it into the smelting electric furnace, and use the electrode arc to start the smelting operation; when the vanadium content in the slag is reduced to 1.5%, the smelting ends, and the slag in the electric furnace is tipped to the pre-added reducing mixture (the weight ratio of aluminum and lime 1:2, the amount of aluminum is 1.2 times of the theoretical addition) in the casting ingot mold for secondary deep reduction of slag, and recover the obtained primary alloy cake; The ingot mold is used to classify and cool the molten alloy liquid in the electric furnace under the condition of superheat of 300°C to obtain multiple alloy pancakes; after casting, collect the primary alloy cake obtained by secondary reduction and the alloy cake obtained by graded cast...

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Abstract

The invention discloses a pouring method of a ferro-vanadium alloy and belongs to the technical field of metallurgy. The method comprise the following steps of a, uniformly mixing smelting raw materials according to a demand on a produced ferro-vanadium alloy product and adding the raw materials into a tilting electric furnace to be smelted; b, after smelting, tilting slag into a pouring ingot mould for secondarily deep reduction of the slag, and carrying out cooling to obtain an alloy, wherein a reduction mixture is pre-added into the pouring ingot mould and c, after deslagging, carrying outstaged pouring and cooling on the molten alloy in the furnace to obtain the alloy. By secondarily deep reduction of the slag, the method can further recover vanadium in waste slag favorably. By stagedpouring of the molten alloy, cooling and stirring of the alloy in the pouring process are facilitated, the shape of a poured alloy cake is changed, and the later crushing performance of the alloy isimproved.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a casting method of vanadium-iron alloy. Background technique [0002] Ferrovanadium is the most widely used vanadium microalloyed master alloy in the iron and steel industry. Vanadium-containing steel is widely used in machinery manufacturing, aerospace, construction, road and bridge industries, etc. Due to the addition of vanadium, the comprehensive performance of steel will be significantly improved. The production principle of industrialized vanadium-iron alloy is mainly to use reducing agent to reduce vanadium-containing oxides and other vanadium-containing raw materials, and to form a solid solution with iron melt in a high-temperature molten state. [0003] At present, most enterprises in the world adopt the oxide of vanadium (V 2 o 5 / V 2 o 3 ) as the raw material, add an appropriate amount of reducing agent (Al / Si) and iron material for thermal reduct...

Claims

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Application Information

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IPC IPC(8): C22B5/04C22B34/22C22B7/04B22D7/06C22C35/00C22C1/02C22C27/02C22C33/04C22C38/12
CPCB22D7/005B22D7/06C22B5/04C22B7/04C22B34/22C22C1/02C22C27/025C22C33/04C22C35/00C22C35/005C22C38/12Y02P10/20
Inventor 余彬景涵陈海军师启华
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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