Industrialized production method of cordierite honeycomb ceramic with ultra-low thermal expansion coefficient

Industrialized production method of cordierite honeycomb ceramic with ultra-low thermal expansion coefficient

  • CN 105,601,261 A
  • Filed: 12/30/2015
  • Published: 05/25/2016
  • Est. Priority Date: 12/30/2015
  • Status: Active Application
First Claim
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1. an industrialized preparing process for ultra-low thermal expansion cordierite honeycomb ceramic, is characterized in that, comprises following stepRapid:

  • (1) the Lv Yuangui source, magnesium source of preparing ultra-low thermal expansion cordierite honeycomb ceramic material is converted into element M g AlThe molal quantity of Si, in molar ratio for Mg;

    Al;

    Si=2;

    3.4-4;

    4.5-5.2 mixes, obtains cordierite mixed material, described inMagnesium source is one or more in magnesia magnesium carbonate magnesium hydroxide, and described aluminium source is the one in aluminium hydroxide aluminium oxideOr multiple, described silicon source is silica flour;

    (2) the cordierite mixed material in step (1) is dropped in smelting furnace and carries out melting, the temperature of described smelting furnace is 1580-1660℃

    ;

    (3) liquation of the cordierite mixed material after step (2) melting is flowed out from smelting furnace, dry through shrendTo graininess cordierite composite material;

    (4) the graininess cordierite composite material obtaining in step (3) is ground into fine powder, and toward add in fine powder plastic agent andLubricant and mix and obtain cordierite pug, the percentage by weight of described fine powder plastic agent lubricant is;

    Fine powder 88-94.5%Plastic agent 0.5-2%Lubricant 5-10%Described plastic agent is cellulose ether, and described lubricant is the one in tung oil, glycerine, stearic acid;

    (5) cordierite pug step (4) being obtained obtains cordierite honeycomb ceramic base substrate by extrusion modling;

    (6) the cordierite honeycomb ceramic base substrate obtaining in step (5) is dried in drying oven;

    (7) by the cordierite honeycomb ceramic base substrate crystallization in crystallization furnace after drying in step (6), obtain ultra-low thermal expansionCordierite honeycomb ceramic.

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