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Calcium titanium-aluminate prefabricated part for vanadium smelting reverberatory furnace lining and preparation method thereof

A technology of calcium aluminate titanate and reverberatory furnace, which is applied in the field of calcium aluminate titanate prefabricated parts, which can solve problems such as rising prices of high-quality high-bauxite, reducing the service life of furnace linings, and increasing costs in the vanadium smelting industry, so as to save the need for firing process, saving resources, anti-acid vanadium slag erosion and good permeability

Inactive Publication Date: 2015-11-11
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the strong acidic vanadium slag in the reverberatory furnace for vanadium smelting has strict requirements on refractory materials, high-alumina bricks are commonly used as linings for reverberatory furnaces for vanadium smelting reverberatory furnaces, but the effect is not ideal, and the acid slag is severely corroded, reducing the use of the lining life
In addition, due to the rising price of high-quality high-alumina bauxite, the cost of vanadium smelting industry has increased

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Disclosed are a calcium aluminate prefabricated part for lining a reverberatory furnace for vanadium smelting and a preparation method thereof. With 60~63wt% calcium aluminate titanate particles, 18~20wt% calcium aluminate titanate fine powder, 2~4wt% titanium dioxide micropowder, 9~10wt% α-Al 2 o 3 Micropowder and 5~6wt% ρ-Al 2 o 3 Micro powder is used as raw material, plus 0.25~0.30wt% polycarboxylate water reducer and 3.5~4.0wt% water of the raw materials, stirred for 5~8min, vibrated and molded, cured for 18~24h under natural conditions, demoulded, in Prefabricated parts of calcium aluminate titanate for inner lining of reverberatory furnace for vanadium smelting were prepared by heat preservation at 90-110°C for 18-24 hours.

[0028] The calcium aluminate titanate prefabricated part prepared in this example for the inner lining of the reverberatory furnace for vanadium smelting was tested: the bulk density is 3.15~3.20g / cm 3 The apparent porosity is 12~13%; the...

Embodiment 2

[0030] Disclosed are a calcium aluminate prefabricated part for lining a reverberatory furnace for vanadium smelting and a preparation method thereof. With 63~66wt% calcium aluminate titanate particles, 16~18wt% calcium aluminate titanate fine powder, 3~5wt% titanium dioxide micropowder, 8~9wt% α-Al 2 o 3 Micropowder and 4~5wt% ρ-Al 2 o 3 Micropowder is used as raw material, plus 0.20~0.25wt% polycarboxylate water reducer and 4.0~4.5wt% water, stirred for 5~8min, vibrated and molded, cured under natural conditions for 18~24h, demoulded, Prefabricated parts of calcium aluminate titanate for inner lining of reverberatory furnace for vanadium smelting were prepared by heat preservation at 90-110°C for 18-24 hours.

[0031] The calcium aluminate titanate prefabricated part prepared in this example for the inner lining of the reverberatory furnace for vanadium smelting was tested: the bulk density is 3.10~3.15g / cm 3 The apparent porosity is 13~14%; the flexural strength after f...

Embodiment 3

[0033] Disclosed are a calcium aluminate prefabricated part for lining a reverberatory furnace for vanadium smelting and a preparation method thereof. 66~69wt% calcium aluminate titanate particles, 14~16wt% calcium aluminate titanate fine powder, 4~6wt% titanium dioxide fine powder, 7~8wt% α-Al 2 o 3 Micropowder and 3~4wt% ρ-Al 2 o 3 Micropowder is used as the raw material, plus 0.15-0.20wt% polycarboxylate water reducer and 4.5-5.0wt% water, stirred for 5-8min, vibrated and molded, cured for 18-24h under natural conditions, demoulded, Prefabricated parts of calcium aluminate titanate for inner lining of reverberatory furnace for vanadium smelting were prepared by heat preservation at 90-110°C for 18-24 hours.

[0034] The calcium aluminate titanate prefabricated part prepared in this example for the inner lining of the reverberatory furnace for vanadium smelting was tested: the bulk density is 3.05~3.10g / cm 3 The apparent porosity is 14~15%; the flexural strength after fi...

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Abstract

The invention relates to a calcium titanium-aluminate prefabricated part for a vanadium smelting reverberatory furnace lining and a preparation method thereof. According to the technical scheme, 60-75 wt% of calcium titanium-aluminate particles, 10-20 wt% of calcium titanium-aluminate fine powder, 2-7 wt% of titanium dioxide micro powder, 5-10 wt% of alpha-Al2O3 micro powder and 1-6 wt% of rho-Al2O3 micro powder are used as raw materials; 0.05-0.30 wt% of water reducing agent and 3.5-6.0 wt% of water of the raw materials are added; stirring is conducted for 5-8 minutes, vibration forming is achieved, maintenance is carried out for 18-24 hours under the natural condition, demolding is performed, heat preservation is conducted for 18-24 hours at the temperature of 90-110 DEG C, and accordingly the calcium titanium-aluminate prefabricated part for the vanadium smelting reverberatory furnace lining is obtained. The calcium titanium-aluminate prefabricated part has the advantages of being low in production cost, and capable of saving resources and protecting the environment. The obtained calcium titanium-aluminate prefabricated part for a vanadium smelting reverberatory furnace is high in high-temperature strength, good in acidity vanadium slag corrosion resistance and good in permeability.

Description

technical field [0001] The invention belongs to the technical field of calcium aluminate prefabricated parts. In particular, it relates to a calcium aluminate titanate prefabricated part for inner lining of a reverberatory furnace for vanadium smelting and a preparation method thereof. Background technique [0002] With the development of the refractory industry, high-quality refractory raw materials have been scarce. Under the environment of energy conservation and environmental protection, it is of great significance to maximize the utilization of waste resources. [0003] Calcium aluminate titanate is a by-product of smelting ferro-titanium alloy. According to phase and chemical composition analysis, its Al 2 o 3 content of 75~80wt%, CaO content of 10~15wt%, TiO 2 The content is 10~15wt%; it is a high-melting point composite material mainly composed of calcium titanate and calcium hexaaluminate, with calcium dialuminate, rutile phase and corundum phase as assistants, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 赵惠忠王立锋冯立李静捷张寒
Owner WUHAN UNIV OF SCI & TECH
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