Ferrovanadium slag refining agent, preparation method thereof, and method for removing vanadium from slag

A technology of slag refining and ferrovanadium, which is applied in the field of vanadium alloy smelting, can solve the problem of high residual vanadium content in ferrovanadium smelting slag, achieve the effects of improving the vanadium removal effect, reducing the loss of aluminum agent, and reducing the cost of raw materials

Active Publication Date: 2022-05-24
PANGANG GROUP RESEARCH INSTITUTE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a ferrovanadium slag refining agent and its preparation method and a method for removing vanadium from slag by using the ferrovanadium slag refining agent, so as to overcome the residual The problem with high vanadium content

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The raw materials required for conventional ferrovanadium (FeV80) smelting are added and the molten pool is formed by electrified smelting for 10-30 minutes. Weigh metal aluminum, metal iron, aluminum-iron alloy and calcium oxide, and mix them according to the mass ratio of metal aluminum, metal iron, aluminum-iron alloy and calcium oxide in a ratio of 20:10:20:50 to form a slag refining agent. The density of the slag refining agent is 4.0g / cm 3 ; Add the slag refining agent at the end of ferrovanadium smelting, and the addition amount of the slag refining agent is 50kg / ton of ferrovanadium, and then energize for 15min; Rotate the furnace body and spray the injection refining agent into the slag for refining, spray The composition of the refining agent is Al powder: the mass ratio of aluminum-iron alloy powder is 20:80, and the amount of the refining agent for injection is 7kg / ton of ferrovanadium. Ferroalloy FeV80. The results show that the ferrovanadium refining age...

Embodiment 2

[0039] The raw materials required for conventional ferrovanadium (FeV80) smelting are added and the molten pool is formed by electrified smelting for 10-30 minutes. Weigh metal aluminum, metal iron, steel grit aluminum, and calcium oxide, and mix them according to the mass ratio of metal aluminum, metal iron, steel grit aluminum, and calcium oxide in a ratio of 40:10:10:40 to form a slag refining agent , the density of slag refining agent is 4.8g / cm 3; The slag refining agent is added at the end of ferrovanadium smelting, and the addition amount of the slag refining agent is 100kg / ton of ferrovanadium, and then energized for 40min; the furnace body is rotated and sprayed into the molten slag with an injection refining agent for refining, and spraying The composition of refining agent is Al powder: the mass ratio of aluminum-iron alloy powder is 80:20, and the amount of injection refining agent is

[0040] 40kg / ton of ferrovanadium, electrify and refine for 10min after blowing...

Embodiment 3

[0042] The raw materials required for conventional ferrovanadium (FeV50) smelting are added, and the molten pool is formed by electrified smelting for 10-30 minutes. Weigh metal aluminum, metal iron, steel core aluminum, and calcium oxide, and mix them in a mass ratio of metal aluminum, metal iron, steel core aluminum, and calcium oxide in a ratio of 20:10:10:60 to form a slag refining agent , the density of slag refining agent is 3.2g / cm 3 ; Add the slag refining agent in the final stage of ferrovanadium smelting, and the addition amount of the slag refining agent is 75kg / ton of ferrovanadium, and then electrify for 40min; Rotate the furnace body and spray the injection refining agent into the slag for refining, and spray The composition of the refining agent is Al powder: the mass ratio of aluminum-iron alloy powder is 20:80, and the amount of injection refining agent is 40kg / ton of ferrovanadium. Ferro-vanadium alloy FeV50. The results show that the ferrovanadium refining...

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Abstract

The invention belongs to the technical field of vanadium alloy smelting, and in particular relates to a ferrovanadium slag refining agent, a preparation method thereof and a method for removing vanadium from slag. The technical problem to be solved by the present invention is to provide a ferrovanadium slag refining agent and a method for removing vanadium from the slag, so as to overcome the problem of high residual vanadium content in the ferrovanadium smelting slag in the prior art. The ferrovanadium slag refining agent provided by the invention is prepared from the following raw materials according to the mass ratio: the mass ratio of metal aluminum, metal iron, slow-release reducing agent 1 and calcium oxide is 20~40:10~20:10~ 20: 30-60; the slow-release reducing agent 1 is at least one of aluminum-iron alloy, steel grit aluminum or steel core aluminum. The ferrovanadium slag refining agent of the present invention can improve the effect of vanadium removal in slag refining, reduce the loss of aluminum agent, reduce the cost of raw materials, and can effectively remove the remaining all vanadium elements in the slag after ferrovanadium smelting, effectively reducing the residual vanadium in the slag The content is below 1.2%.

Description

technical field [0001] The invention belongs to the technical field of vanadium alloy smelting, and particularly relates to a ferrovanadium slag refining agent, a preparation method thereof, and a method for removing vanadium from slag. Background technique [0002] Vanadium ferroalloy is a special ferroalloy with a wide range of uses in the steel industry. Many vanadium factories mainly use powdered vanadium trioxide aluminothermic method to produce ferrovanadium. At the end of ferrovanadium smelting, the content of vanadium in the slag is often high. In order to remove the residual vanadium oxide and vanadium alloy particles in the slag, it is often necessary to Adding refining agent and dusting for refining, if the refining measures are improper, the effect of deep vanadium removal is often not achieved. [0003] The density of the refined material added in the existing smelting of ferrovanadium is relatively light, and the metal aluminum agent is easy to float on the up...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/06C22C27/02C22C35/00
CPCC22C1/06C22C27/025C22C35/00
Inventor 叶明峰王仕伟陈海军师启华
Owner PANGANG GROUP RESEARCH INSTITUTE CO LTD
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