Spray blowing method in smelting of iron-vanadium alloy

A vanadium ferroalloy, injection refining technology, applied in the field of metallurgy, can solve the problems of serious slag splashing, low injection efficiency smelting vanadium yield, etc., to improve smelting vanadium yield, improve safety controllability, and wide application foreground effect

Active Publication Date: 2017-01-04
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

[0004] The technical problem to be solved by the present invention is serious slag splashing, low blowing efficiency and low yield of smelting vanadium during the blowing and refining process of ferrovanadium

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Using 400kg V 2 o 5 (total vanadium content = 55%) and 2700kg V 2 o 3 (total vanadium content = 64%) is used as raw material for ferrovanadium smelting. Batching is carried out separately before smelting, 400kg V 2 o 5 Add 161kg aluminum powder (purity 99.5%), 50kg iron pellets (purity 96%) and 50kg lime (CaO content 90%); 2700kg V 2 o 3 A total of 1095kg of aluminum powder (purity 99.5%), 414kg of iron pellets (purity 96%) and 180kg of lime (CaO content 90%) were added.

[0033] Before the smelting begins, the prepared V-containing 2 o 5 All the smelting raw materials are added into the furnace, and the arc is energized (voltage 190v, current 7500A). After the molten pool is formed in the furnace, the prepared V-containing 2 o 3 For smelting raw materials, stop the power supply before feeding each time, and continue to smelt with voltage 135v and current 11500A after the feeding is completed; stop power supply and spray when the smelting power is 50min, and t...

Embodiment 2

[0035] Using 400kg V 2 o 5 (total vanadium content = 55%) and 2700kg V 2 o 3 (total vanadium content = 64%) is used as raw material for ferrovanadium smelting. Batching is carried out separately before smelting, 400kg V 2 o 5 Add 150kg aluminum powder (purity 99.5%), 50kg iron pellets (purity 96%) and 50kg lime (CaO content 90%); 2700kg V 2 o 3 A total of 1095kg of aluminum powder (purity 99.5%), 414kg of iron pellets (purity 96%) and 180kg of lime (CaO content 90%) were added.

[0036] Before the smelting begins, the prepared V-containing 2 o 5 All the smelting raw materials are added into the furnace, and the arc is energized (voltage 190v, current 7500A). After the molten pool is formed in the furnace, the prepared V-containing 2 o 3 For smelting raw materials, stop energizing each time before feeding, and continue to smelt with voltage 135v and current 11500A after feeding; stop energizing and spray when the smelting is powered on for 55 minutes, and the injectio...

Embodiment 3

[0038] Using 400kg V 2 o 5 (total vanadium content = 55%) and 2700kg V 2 o 3 (total vanadium content = 64%) is used as raw material for ferrovanadium smelting. Batching is carried out separately before smelting, 400kg V 2 o 5 Add 135kg aluminum powder (purity 99.5%), 50kg iron pellets (purity 96%) and 50kg lime (CaO content 90%); 2700kg V 2 o 3 A total of 1095kg of aluminum powder (purity 99.5%), 414kg of iron pellets (purity 96%) and 180kg of lime (CaO content 90%) were added.

[0039] Before the smelting starts, the prepared V-containing 2 o 5 All the smelting raw materials are added into the furnace, and the arc is energized (voltage 190v, current 7500A). After the molten pool is formed in the furnace, the prepared V-containing 2 o 3 For smelting raw materials, stop the power before each feeding, and continue to smelt with a voltage of 135v and a current of 11500A after the feeding; when the smelting power is turned on for 60 minutes, the power is stopped and the ...

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Abstract

The invention belongs to the field of metallurgy, and relates to a spray blowing method in smelting of iron-vanadium alloy. A technical scheme for solving the technical problem is as follows: a, adding the batch mixed smelting raw materials containing V2O5 and V2O3 into a smelting furnace in batches, powering on the smelting furnace, and smelting; b, spray blowing after the smelting is ended, wherein a spray blowing material is a mixture of aluminum powder and vanadium-iron fine powder; and c, continuously electrifying and refining after the spray blowing is ended. By adopting the method, the spray blowing efficiency is improved, the content of vanadium in the vanadium-iron smelting slag is reduced, and the yield of smelting vanadium is increased.

Description

technical field [0001] The invention belongs to the field of metallurgy and relates to a jet refining method in smelting vanadium-iron alloy. Background technique [0002] Ferrovanadium is mainly used as an alloy additive in steelmaking. During the crystallization process of molten steel, vanadium carbonitride formed by the metal vanadium in Ferrovanadium is first precipitated. By inducing and strengthening the crystallization process, it can further refine the steel grains and improve its resistance. abrasiveness and strength. At present, there are many methods for ferrovanadium smelting, which can be divided into aluminothermic method and electric aluminothermic method according to the difference of vanadium smelting raw materials, and can be divided into straight tube furnace and tilting furnace according to the difference of smelting equipment. According to the smelting process It can be divided into one-step method, two-step method, multi-phase method and so on. where...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B4/06C22C1/02C22C1/06C22C27/02
CPCC22B4/06C22C1/02C22C1/06C22C27/025
Inventor 杜光超孙朝晖陈海军景涵唐红建尹丹凤余彬潘成王唐林
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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