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Corundum mullite crucible and preparation method thereof

A mullite and crucible technology, applied in the field of refractory materials, can solve the problems of poor acid and alkali resistance, short life and low efficiency, and achieve the effects of good acid and alkali resistance, long service life and high efficiency

Active Publication Date: 2019-08-02
SHANDONG VOCATIONAL COLLEGE OF IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of preparing frit and melting glaze in the ceramic industry requires a funnel-shaped crucible with complex structure and high integrity. At present, the crucible used for melting glaze in the ceramic industry has high cost, low efficiency, poor acid and alkali resistance, and is easy to crack during use. Peeling, short life, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1) Prepare materials according to the weight of raw materials: 29 parts of 3~1mm tabular corundum, 22 parts of 1~0mm tabular corundum, 10 parts of 80-mesh corundum sand, 8 parts of 320-mesh zircon powder, 9 parts of 240-mesh sub-white corundum, 9 parts of 150-mesh sillimanite, 2.5 parts of 180-mesh Suzhou soil, 5 parts of Al2O3 micropowder 370C, 5 parts of 200-mesh quartz, 3.15 parts of binder; Binder; add each fine powder raw material into the screw machine for dry mixing, and prepare the blended fine powder for later use;

[0024] 2) Mixing: mix in a double planetary power mixing mixer, add all the raw materials in the order of adding granular material first, and then add the mixed powder, mix for 5 minutes, add binder and water for mixing, control the moisture content to 7%, and obtain Forming slurry, mixing time 17min;

[0025] 3) Pouring molding: put the forming model on the vibrating table, start the vibrating table, pour the forming slurry into the forming model...

Embodiment 2

[0029] 1) Prepare materials according to the weight of raw materials: 28 parts of 3~1mm tabular corundum, 24 parts of 1~0mm tabular corundum, 10 parts of 80-mesh corundum sand, 10 parts of 320-mesh zircon powder, 8 parts of 240-mesh sub-white corundum, 10 parts of 150 mesh sillimanite, 2 parts of 180 mesh Suzhou soil, Al 2 o 3 5 parts of micropowder 370C, 5 parts of 200 mesh quartz, 3 parts of binder; the binder is a composite binder of gum water and sodium hexametaphosphate in a mass ratio of 2.7:0.18; each fine powder raw material is added to a screw machine for dry mixing to prepare Blend fine powder for subsequent use;

[0030] 2) Mixing: Mixing in a dual-planetary power mixing mixer, adding all the raw materials in the order of adding granular materials first, and then adding mixed powder, mixing for 4.7 minutes, adding binder and water for mixing, controlling the moisture content to 7.2%, and making Obtain molding slurry, mixing time 17min;

[0031] 3) Pouring molding...

Embodiment 3

[0035] 1) Prepare materials according to the weight of raw materials: 30 parts of 3~1mm tabular corundum, 20 parts of 1~0mm tabular corundum, 10 parts of 80-mesh corundum sand, 7 parts of 320-mesh zircon powder, 10 parts of 240-mesh sub-white corundum, 8 parts of 150 mesh sillimanite, 3 parts of 180 mesh Suzhou soil, Al 2 o 3 5 parts of micropowder 370C, 5 parts of 200-mesh quartz, 3.5 parts of binder; the binder is a composite binder of gum water and sodium hexametaphosphate in a mass ratio of 4:0.12; each fine powder raw material is added to a screw machine for dry mixing to prepare Blend fine powder for subsequent use;

[0036] 2) Mixing: mix in a double planetary power mixing mixer, add all the raw materials in the order of adding granular material first, and then add the mixed powder, mix for 5.3 minutes, add binder and water for mixing, control the moisture content to 6.8%, and make Obtain molding slurry, mixing time 18min;

[0037] 3) Pouring molding: put the forming...

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Abstract

The invention discloses a corundum mullite crucible and a preparation method thereof, and belongs to the technical field of refractory materials. The corundum mullite crucible comprises the followingraw materials in parts by weight: 25-33 parts of 3-1 mm tabular corundum, 18-27 parts of 1-0 mm tabular corundum, 7-12 parts of 80-mesh corundum sand, 6-12 parts of 320-mesh zircon powder, 6-14 partsof 240-mesh vice-white corundum, 7-14 parts of 150-mesh sillimanite, 1.5-5 parts of 180-mesh Suzhou soil, 3.5-6 parts of Al2O3 micropowder 370C, 3.8-5.8 parts of 200-mesh quartz and 2-5 parts of a binding agent. The crucible made from corundum mullite materials has advantages of small thermal expansion coefficient, good acid and alkali resistance and good thermal shock stability; the corundum mullite materials are ideal materials suitable for ceramic industry; and the crucible is cast and molded by gypsum, and has advantages of low production costs, high efficiency and excellent product performance and overall effect.

Description

technical field [0001] A corundum mullite crucible and a preparation method thereof belong to the technical field of refractory materials. Background technique [0002] The crucible is a special fired refractory product. It needs to withstand cold and thermal shocks during use and requires good thermal shock stability. Today's users have higher and higher requirements for the use temperature of the crucible and longer service life. , from the status quo, it has not yet reached a very ideal level. The process of preparing frit and melting glaze in the ceramic industry requires a funnel-shaped crucible with complex structure and high integrity. At present, the crucible used for melting glaze in the ceramic industry has high cost, low efficiency, poor acid and alkali resistance, and is easy to crack during use. Peeling, short life and other problems. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencie...

Claims

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Application Information

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IPC IPC(8): C04B35/106C04B35/185C04B35/66C04B35/622
CPCC04B35/185C04B35/622C04B35/66C04B2235/3418C04B2235/3463C04B2235/349C04B2235/9607
Inventor 孙华云于乐海
Owner SHANDONG VOCATIONAL COLLEGE OF IND
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