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Ferrovanadium slag refining agent and preparation method thereof and method of removing vanadium from slag

A technology for 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, and achieve the effects of improving vanadium yield, reducing aluminum loss and reducing raw material cost.

Active Publication Date: 2020-10-16
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] Add the raw materials required for conventional ferrovanadium (FeV80) smelting and carry out electrification smelting for 10-30 minutes to form a molten pool. Metal aluminum, metal iron, aluminum-iron alloy, and calcium oxide are weighed, and mixed according to the mass ratio of metal aluminum, metal iron, aluminum-iron alloy, and calcium oxide to form a slag refining agent in a ratio of 20:10:20:50. The density of slag refining agent is 4.0g / cm 3 ; Add the slag refining agent at the end of ferrovanadium smelting, the amount of slag refining agent added is 50kg / ton of ferrovanadium, and then power on for 15min; rotate the furnace body and inject the injection refining agent into the slag for refining, spray The refining agent is composed of Al powder: the mass ratio of aluminum-iron alloy powder is 20:80, and the amount of refining agent injected is 7kg / ton of ferrovanadium. After the injection is completed, it is energized and refined for 10 minutes; Iron alloy FeV80....

Embodiment 2

[0039] Add the raw materials required for conventional ferrovanadium (FeV80) smelting and carry out electrification smelting for 10-30 minutes to form a molten pool. Weigh the metal aluminum, metal iron, steel sand aluminum, and calcium oxide, and mix them according to the mass ratio of metal aluminum, metal iron, steel sand aluminum, and calcium oxide at a ratio of 40:10:10:40 to form a slag refining agent , the density of the slag refining agent is 4.8g / cm 3; Add the slag refining agent at the end of ferrovanadium smelting, the amount of slag refining agent added is 100kg / ton of ferrovanadium, and then power on for 40min; rotate the furnace body and spray the injection refining agent into the slag for refining, spray The refining agent is composed of Al powder: the mass ratio of aluminum-iron alloy powder is 80:20, the amount of injection refining agent is 40kg / ton of ferrovanadium, after the injection is completed, it is energized and refined for 10 minutes; Vanadium iron ...

Embodiment 3

[0041] Add the raw materials required for conventional ferrovanadium (FeV50) smelting and carry out electrification smelting for 10 to 30 minutes to form a molten pool. Weigh the metal aluminum, metal iron, steel core aluminum, and calcium oxide, and mix them according to the mass ratio of metal aluminum, metal iron, steel core aluminum, and calcium oxide as 20:10:10:60 to form a slag refining agent , the density of the slag refining agent is 3.2g / cm 3 ; Add the slag refining agent at the end of ferrovanadium smelting, the amount of slag refining agent added is 75kg / ton of ferrovanadium, and then power on for 40min; rotate the furnace body and inject the injection refining agent into the slag for refining, spray The refining agent is composed of Al powder: the mass ratio of aluminum-iron alloy powder is 20:80, the amount of injection refining agent is 40kg / ton of ferrovanadium, after the injection is completed, it is energized and refined for 10 minutes; Vanadium iron alloy F...

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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 and a preparation method thereof and a method of removing vanadium from slag. The invention aims to provide the ferrovanadium slag refining agent and the method of removing vanadium from slag to overcome the problem of high residual vanadium in ferrovanadium smelting slag. The ferrovanadium slag refining agent provided by the invention is prepared from the following raw materials in mass ratio: metallic aluminum: metallic ferrum: slow release reducer 1: calcium oxide=(20-40):(0-20):(10-20):(30-60), wherein the slow release reducer 1 is at least one of an aluminum iron alloy, steel grit aluminum or steel-cored aluminum. The ferrovanadium slag refining agent can improve the vanadium removal effect of slag refining, reduce the loss of an aluminum agent and lower the cost of raw materials and can remove all-vanadium elements left in slag after ferrovanadium smelting effectively, and reduce the residual vanadium content in the slag to below 1.2% effectively.

Description

technical field [0001] 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. Background technique [0002] Ferro-vanadium is a special ferroalloy with a wide range of uses in the steel industry. Many vanadium plants mainly use powdered vanadium trioxide aluminothermic method to produce ferrovanadium. In the final stage of ferrovanadium smelting, the vanadium content 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 powder spraying refining, if the refining measures are not proper, the effect of deep vanadium removal is often not achieved. [0003] The density of the refining materials added to the existing ferrovanadium smelting is relatively light. After being added to the slag, the metal aluminum age...

Claims

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Application Information

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Patent Type & Authority Applications(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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