Smelting furnace for producing vanadium-aluminium alloy and manufacturing method of smelting furnace

The technology of a vanadium-aluminum alloy and its manufacturing method is applied in the production field of vanadium-aluminum alloy, which can solve the problems of increasing the production cost of vanadium-aluminum alloy, insufficient refractoriness, and many pores of vanadium-aluminum alloy ingots, etc. Effect of burning or cracking, reducing production cost

Inactive Publication Date: 2015-04-29
PANGANG GRP PANZHIHUA STEEL & VANADIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, vanadium-aluminum alloys are mostly produced by the aluminothermic method outside the furnace. The furnace body of the smelting furnace used includes the furnace body shell and the furnace lining arranged on the inner surface of the furnace body shell. The furnace lining of the existing smelting furnace is made of graphite. The refractoriness is not enough and the thermal insulation performance is poor. During the smelting process, the charge in the smelting furnace erodes the graphite lining more severely, resulting in more pores, poor surface finish, and more inclusions (especially impurity carbon content) Exceeding the standard), the qualified rate of finished products is low. Usually, after smelting with the above-mentioned smelting furnace, vacuum refining is required to produce qualified vanadium-aluminum alloys, which increases the production cost of vanadium-aluminum alloys and reduces production efficiency. In addition, due to The furnace lining made of graphite is easy to be burned and broken, and the number of repeated use is limited, which further increases the cost of vanadium-aluminum alloy production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Pour magnesia with a particle size of 1 mm to 8 mm, magnesia refractory mud with a particle size of less than 1 mm, and a binder into a mixer and stir for 5 minutes to obtain a refractory material; coat the inner surface of the furnace base with the refractory material and pound Then place the furnace body on the furnace base and connect the furnace body and the furnace base to form the furnace body shell; then, put the inverted conical furnace lining mold into the furnace body shell, and fill the refractory material Between the inner surface of the furnace body shell and the outer surface of the furnace lining mold and tamp tightly; finally, bake the furnace body shell coated with the refractory material on the inner surface to form the furnace lining; wherein, the used The grade of magnesia is FM985 (the mass percentage of the chemical composition of this grade of fused magnesia is: MgO≥98.5, SiO 2 2 <0.5, CaO<0.8), the binder is refined magnesium chloride solution, t...

Embodiment 2

[0051] Pour magnesia with a particle size of 1 mm to 8 mm, magnesia refractory mud with a particle size of less than 1 mm, and a binder into a mixer and stir for 4 minutes to obtain a refractory material; coat the inner surface of the furnace base with the refractory material and pound Then place the furnace body on the furnace base and connect the furnace body and the furnace base to form the furnace body shell; then, put the inverted conical furnace lining mold into the furnace body shell, and fill the refractory material Between the inner surface of the furnace body shell and the outer surface of the furnace lining mold and tamp tightly; finally, bake the furnace body shell coated with the refractory material on the inner surface to form the furnace lining; wherein, the used The grade of magnesia is FM985 (the mass percentage of the chemical composition of this grade of fused magnesia is: MgO≥98.5, SiO 2 2 <0.5, CaO<0.8), the binder is refined magnesium chloride solution, t...

Embodiment 3

[0054] Pour magnesia with a particle size of 1 mm to 8 mm, magnesia refractory mud with a particle size of less than 1 mm, and a binder into a mixer and stir for 5 minutes to obtain a refractory material; coat the inner surface of the furnace base with the refractory material and pound Then place the furnace body on the furnace base and connect the furnace body and the furnace base to form the furnace body shell; then, put the inverted conical furnace lining mold into the furnace body shell, and fill the refractory material Between the inner surface of the furnace body shell and the outer surface of the furnace lining mold and tamp tightly; finally, bake the furnace body shell coated with the refractory material on the inner surface to form the furnace lining; wherein, the used The grade of magnesia is FM985 (the mass percentage of the chemical composition of this grade of fused magnesia is: MgO≥98.5, SiO 2 2 <0.5, CaO<0.8), the binder is refined magnesium chloride solution, t...

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Abstract

The invention discloses a smelting furnace for producing a vanadium-aluminium alloy and a manufacturing method of the smelting furnace. A furnace body of the smelting furnace comprises a furnace body casing and a furnace lining arranged on the inner surface of the furnace body casing, and the furnace body casing comprises a furnace base and a body which are connected with each other. The manufacturing method comprises steps as follows: preparation of a refractory material: evenly mixing magnesite, magnesium refractory mortar and a binder to obtain the refractory material; manufacturing of the furnace lining: coating the inner surface of the furnace body casing with the refractory material, and performing roasting to form the furnace lining. The furnace lining of the smelting furnace is high in refractoriness and good in heat-insulation performance, and the vanadium-aluminium alloy produced by using the smelting furnace is better in quality.

Description

technical field [0001] The invention relates to the field of vanadium-aluminum alloy production, in particular to a smelting furnace for producing vanadium-aluminum alloy and a manufacturing method thereof. Background technique [0002] Vanadium-aluminum alloy is an intermediate alloy that needs to be added in the preparation of high-performance titanium alloy materials. In recent years, with the development of the aerospace field, the demand and requirements for vanadium-aluminum alloy have increased, and the research on the production process of vanadium-aluminum alloy has become a Hot spot, the control requirements and difficulty of impurity elements in vanadium aluminum alloy are relatively high. At present, vanadium-aluminum alloys are mostly produced by the aluminothermic method outside the furnace. The furnace body of the smelting furnace used includes the furnace body shell and the furnace lining arranged on the inner surface of the furnace body shell. The furnace li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66F27D1/16
Inventor 向丽王永钢孙朝晖陈海军周芳
Owner PANGANG GRP PANZHIHUA STEEL & VANADIUM
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