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High-temp alkali-resistant material and use therreof in ceramic filler

A ceramic filler and alkali resistance technology, applied in the field of ceramic filler materials, can solve the problems of high cost, filler scaling, thickening, etc., and achieve the effect of good alkali corrosion resistance

Inactive Publication Date: 2005-03-23
兰州瑞玛化机有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this ceramic filler is the high cost
[0011] The object of the present invention is to provide a kind of economical alkali-resistant material and its application in ceramic fillers, to solve the problem of fillers caused by chemical reactions on the surface when ordinary ceramic materials are used in alkaline environments at high temperatures. Scaling, thickening problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Alkali-resistant material composition (parts by weight)

[0023] The alkali-resistant material composed of the above proportion is added to a ball mill, and wet pulverized to a particle size of less than 50 microns; then dehydrated with a filter press to make the moisture content <=23%; after being degassed by a vacuum mud mill, it is extruded The machine extrudes into a rectangular saddle ring blank; the blank is dried at 110°C for 2 hours; then it is sintered in a drawer kiln at 1350°C and discharged from the kiln.

[0024] Performance evaluation:

[0025] 1. Alkali resistance test

[0026] Φ25 ordinary ceramic saddle ring (produced by Ningde Junjie Porcelain Co., Ltd., the same below), Ty-PakHSM (produced by Norton Chemical Products Company, USA, with zircon and wood ash as the main ceramic components, the same below) and the ceramic rectangular saddle ring 1 buried K 2 CO 3 (Melting point is 891℃), keep it at a high temperature of 950℃ for 8 hours to make the ...

Embodiment 2

[0043]

Embodiment 3

[0045]

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Abstract

A high-temp. alkali-resistant material mainly contains MgO, SiO2 and Al2O3. Its primary crystal phase is forsterite and spinel. Its features are high resistance to alkali corrosion at high temp and use for preparing ceramic filler of heat-accumulating thermal oxidizer to treat organic waste gas in wood industry.

Description

Technical field [0001] The invention relates to an industrial ceramic material, in particular to a material for ceramic filler. Background technique [0002] The ceramic filler for mass transfer or heat transfer used in chemical equipment and heat exchangers is mainly composed of 70-75% SiO 2 , 20-25% Al 2 O 3 , 2~5%K 2 O+Na 2 O, and a small amount of Fe, Ca, Ti, etc. are sintered at high temperature, and its shapes are honeycomb ceramics, porcelain saddle rings, Raschig rings, etc. When the ordinary ceramic filler of the above composition is used in an alkaline environment, the alkaline substance will chemically react with the surface of the filler at high temperature, resulting in the formation of a reaction layer on the surface of the filler, which increases the thickness of the filler. When the thickness of the filler reaches the critical point, only replace it. The corroded packing can restore the equipment to normal. This not only increases the cost of replacing the packing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/04C04B35/63C04B41/87
Inventor 曹学仁
Owner 兰州瑞玛化机有限公司
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