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Preparation method of ceramic filtration supporter

A technology of ceramic filtration and support body, which is applied in the direction of filtration separation, separation method, and dispersed particle filtration, etc. It can solve the problems of inability to balance filter ceramic pore size and strength performance, poor aggregate sphericity, and comprehensive performance cannot be guaranteed, so as to avoid Deformation and irregularity, good regularity, and the effect of reducing firing costs

Active Publication Date: 2011-01-19
SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] That is to say, the sphericity of the aggregate is poor, and the performance of the filter ceramics produced in terms of porosity, pore size and strength cannot be taken into account, and the comprehensive performance cannot be guaranteed.

Method used

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  • Preparation method of ceramic filtration supporter
  • Preparation method of ceramic filtration supporter

Examples

Experimental program
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Effect test

Embodiment 1

[0039] With 200-400 micron spherical bauxite particles as aggregate, bauxite 70% by weight, Zhangcun soil 23%, burnt talc 4%, calcite 3% are mixed to make a high-temperature binder, and the ball-milled fineness particle size after mixing Requirements: D90 = 8 μm, the weight percentage of aggregate and high-temperature binder is 88:12; plus 5% of charcoal powder as a pore-enhancing agent, 5% of graphite as a release agent, and 7% of phenolic resin.

[0040] Add aggregate, high-temperature binder, charcoal powder, and graphite into the mixer and mix evenly, then add phenolic resin and mix thoroughly;

[0041] Put the stale ingredients into a mold of the required size, such as a ceramic filter tube mold, and pressurize it at 80MPa by isostatic pressing method;

[0042] After degrinding, dry naturally to get the biscuit;

[0043] The dried biscuit is hung and fired at 1280°C for 2 hours.

[0044] The obtained product has a porosity of 49.65%, a pore diameter of 119.4 microns and...

Embodiment 2

[0051] With 100-500 micron spherical silicon carbide particles as aggregate, the high-temperature binder is made by mixing bauxite 65%, Suzhou soil 15%, Datong soil 12%, potassium feldspar 6%, and calcite 2%. The ball milling fineness particle size requirements: D90 = 7μm, the weight percentage of aggregate and high-temperature binder is 90:10; plus 3% of charcoal powder as a pore-enhancing agent, 6‰ of graphite as a release agent, and 4% of phenolic resin.

[0052] Add aggregate, high-temperature binder, charcoal powder, and graphite into the mixer and mix evenly, then add phenolic resin and mix thoroughly;

[0053] Put the stale ingredients into molds of the required size, such as ceramic filter tube molds, and pressurize them under 60 MPa by isostatic pressing method;

[0054] After degrinding, dry naturally to get the biscuit;

[0055] The dried biscuit is hung and fired at 1180°C for 2.5 hours.

Embodiment 3

[0057] With 200-400 micron spherical cordierite particles as aggregate, 65% of bauxite, 13% of Zhangcun soil, 16% of Datong soil, 2% of burnt talc and 4% of potassium feldspar are mixed to make a high-temperature binder by weight. The fineness and particle size requirements of the ball mill after mixing: D90=8μm, the weight percentage of aggregate and high-temperature binder is 92:8; plus 8% of charcoal powder as a pore-enhancing agent, 4‰ of graphite as a release agent, and 3% of phenolic resin.

[0058] Add aggregate, high-temperature binder, charcoal powder, and graphite into the mixer and mix evenly, then add phenolic resin and mix thoroughly;

[0059] After mixing and aging for 32 hours, put the aged ingredients into a mold of the required size, such as a ceramic filter tube mold, and press it under 100MPa by isostatic pressing;

[0060] After degrinding, dry naturally to get the biscuit;

[0061] The dried biscuit is hung and fired at 1080°C for 3 hours.

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Abstract

The invention relates to a preparation method of a ceramic filtration supporter for the filtering dust removal of high temperature gas. The preparation method comprises the steps of mixing materials, formation and firing, the materials include aggregate, high temperature binding agent and pore forming agent, wherein the aggregate is spherical granule aggregate, the formation adopts isostatic compaction with the formation pressure being controlled in a range from 40 to 150 MPa and the firing temperature being controlled in a range from 1000 to 1300 DEG C, and the heat is preserved for 2 to 3 hours. The resultant ceramic filtration supporter has appropriate pore diameter and porosity, good gas permeability, high strength and good overall properties.

Description

technical field [0001] The invention relates to a preparation method of a ceramic filter support body, which is used for filtering and dust removal of high-temperature gas. Background technique [0002] With the implementation of national energy saving and emission reduction policies and the development of new energy materials, high temperature and high pressure ceramic filtration technology has attracted more and more attention. How to improve the filtering effect of filter ceramics has become a research hotspot in the industry. At present, the aggregates used in filter ceramics researched and circulated in the filter ceramic industry at home and abroad are all non-spherical, and the properties of the prepared ceramic materials, such as pore size, porosity, strength, air permeability, etc., cannot be taken into account. The following table 1 shows The situation of several foreign high-temperature filter ceramic components. [0003] Table 1. The situation table of several ...

Claims

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Application Information

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IPC IPC(8): C04B35/622C04B35/66B01D39/20B01D46/00
Inventor 李勇陈学江张晓丽张大军赵建国宋涛张秀彩
Owner SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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