High-temperature refractory material for kiln lining and preparation method of high-temperature refractory material

A refractory material and high temperature technology, applied in the field of high temperature refractory materials, can solve the problems of damage and unusability of refractory castables, and achieve the effects of low production cost, stable volume and protection of the furnace body

Inactive Publication Date: 2017-11-14
HEFEI MINGYOU HIGH TEMPERATURE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The refractory materials and refractory castables currently on the market generally cannot exceed 1600-1700°C, otherwise the refractory castables will be damaged
In this case, ordinary refractory materials cannot meet the requirements and cannot be used. It is urgent to develop a refractory material that can withstand high temperatures above 1700°C.

Method used

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  • High-temperature refractory material for kiln lining and preparation method of high-temperature refractory material
  • High-temperature refractory material for kiln lining and preparation method of high-temperature refractory material
  • High-temperature refractory material for kiln lining and preparation method of high-temperature refractory material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This embodiment provides a high-temperature refractory material for the inner wall of a kiln, including the following raw materials in parts by weight: 20 parts of high-alumina materials, 12 parts of super-grade kaolin, 5 parts of binder, yellow dextrin and sodium carboxymethyl cellulose CMC and 2 parts of polyphosphate mixture, 10 parts of corundum fine powder, 8 parts of zircon sand, 5 parts of zirconium dioxide, and 5 parts of chromium dioxide. The binder is a mixture of powdered water glass and powdered phenolic resin, wherein the powdered water glass accounts for 40% of the total weight of the binder, and the powdered phenolic resin accounts for 60% of the total weight of the binder.

[0026] The high-alumina material mentioned above is special-grade or first-grade bauxite, including coarse and fine aggregates, fine powder and ultra-fine powder, of which coarse aggregate accounts for 5%, medium aggregate accounts for 20%, and fine aggregate accounts for 25%. , fine...

Embodiment 2

[0036] This embodiment provides a high-temperature refractory material for the inner wall of a kiln, including the following raw materials in parts by weight: 20-40 parts of high-alumina material, 25 parts of super-grade kaolin, 12 parts of binder, sodium carboxymethylcellulose CMC and polyphosphoric acid 8 parts of salt and lignosulfonate mixture, 15 parts of corundum fine powder, 15 parts of zircon sand, 15 parts of zirconium dioxide, and 15 parts of chromium dioxide. The binder is a mixture of powdered water glass and powdered phenolic resin, wherein the powdered water glass accounts for 85% of the total weight of the binder, and the powdered phenolic resin accounts for 15% of the total weight of the binder.

[0037] The high-alumina material mentioned above is special-grade or first-grade bauxite, including coarse and fine aggregates, fine powder and ultra-fine powder, of which coarse aggregate accounts for 10%, medium aggregate accounts for 20%, and fine aggregate accounts...

Embodiment 3

[0047] This embodiment provides a high-temperature refractory material for the inner wall of a kiln, including the following raw materials in parts by weight: 30 parts of high-alumina materials, 20 parts of super-grade kaolin, 8 parts of binder, polyphosphate and lignosulfonate, and polycarbonate 5 parts of ester PC mixture, 13 parts of corundum fine powder, 10 parts of zircon sand, 10 parts of zirconium dioxide, and 10 parts of chromium dioxide. The binder is a mixture of powdered water glass and powdered phenolic resin, wherein the powdered water glass accounts for 70% of the total weight of the binder, and the powdered phenolic resin accounts for 30% of the total weight of the binder.

[0048] The high-alumina material mentioned above is super-grade or first-grade bauxite, including coarse and fine aggregates, fine powder and ultrafine powder, of which coarse aggregate accounts for 8%, medium aggregate accounts for 12%, and fine aggregate accounts for 30%. , fine powder acc...

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Abstract

The invention discloses a high-temperature refractory material for a kiln lining. The high-temperature refractory material comprises the following raw materials in parts by weight: 20-40 parts of a high alumina material, 12-25 parts of special grade kaolin, 5-12 parts of an adhesive, 2-8 parts of an admixture, 10-15 parts of corundum fine powder, 8-15 parts of zircon sand, 5-15 parts of zirconium dioxide and 5-15 parts of chromium dioxide, wherein the high alumina material refers to special grade or first-grade bauxite and comprises coarse aggregate, fine aggregate and superfine powder. The invention further provides a method for preparing the high-temperature refractory material. The high-temperature refractory material prepared according to the raw material ratio and the preparation method provided by the invention is applied to the kiln lining. According to experimental detection, the high-temperature refractory material has excellent stability at a high temperature, the refractoriness reaches 1700 DEG C or higher even reaches 2000 DEG C, and the conventional market requirements are completely met.

Description

technical field [0001] The invention relates to the technical field of high-temperature refractory materials, in particular to a high-temperature refractory material for the inner wall of a kiln and a preparation method thereof. Background technique [0002] A kiln is a device made of refractory materials for firing products, and is an essential facility in pottery molding. The inner wall of the kiln is generally made of heat preservation, heat insulation, high temperature and refractory materials. With the continuous growth of the ceramic market, the required quality is getting higher and higher, which requires a higher firing temperature than the traditional one when firing ceramic products, and then puts forward higher requirements for the high-temperature refractory materials on the inner wall of the kiln. , For example, the process of some products requires that the refractory materials used should be able to withstand high temperatures above 1700 °C. The high-tempera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/106C04B35/63C04B35/634
CPCC04B35/106C04B35/6316C04B35/63476C04B2235/3241C04B2235/349
Inventor 王虎
Owner HEFEI MINGYOU HIGH TEMPERATURE TECH CO LTD
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