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Cordierite kiln furniture sagger and preparation method thereof

A cordierite and kiln furniture technology, applied in the field of refractory materials, can solve the problems of short service life, high breakage rate, limited bearing capacity, etc., and achieve good thermal conductivity, low heat storage, good resistance to rapid cooling and rapid heating, good heat The effect of stability

Active Publication Date: 2019-07-19
SHANDONG VOCATIONAL COLLEGE OF IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the currently used saggers have limited bearing capacity due to their heavy weight, high energy consumption, poor heat permeability, easy to crack during use, high breakage rate, and short service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1) Add the raw materials into the planetary wet mill according to the ratio and stir for 20 minutes; the weight parts of the raw materials are: 3-1mm mullite M4713 parts, 1-0mm mullite M47 13 parts, 2-1mm cordierite 18 parts, grain 9.5 parts of cordierite with a diameter of 2 o 3 50.20%, Fe 2 o 3 0.86%, SiO 2 47.01%, TiO 2 0.93%, MgO 0.06%, CaO 0.69%, Na 2 Al 2 o 3 34.39%, Fe 2 o 3 0.88%, SiO2 48.83%, TiO 2 0.95%, MgO13.23% and the remaining impurities; the refractoriness is 1380°C; after mixing evenly, discharge and store the material for 13 hours;

[0035] 2) Forming by hydraulic press, controlling the porosity of the wet billet to 19%, and the bulk density of the wet billet to 2.56g / cm 3 ;

[0036] 3) Dried in the drying hole, the drying temperature is 55°C, the sound is good without cracks before installation, and the residual moisture is 0.49%;

[0037] 4) Firing in a tunnel kiln with a firing temperature of 1350°C and a firing time of 7 hours.

Embodiment 2

[0039] 1 Add the raw materials into the planetary wet mill and stir for 20 minutes according to the ratio; the weight parts of the raw materials are: 3-1mm mullite M4714 parts, 1-0mm mullite M47 12 parts, 2-1mm cordierite 19 parts, particle size 2 o 3 50.20%, Fe 2 o 3 0.86%, SiO 2 47.01%, TiO 2 0.93%, MgO 0.06%, CaO 0.69%, Na 2 Al 2 o 3 34.39%, Fe 2 o 3 0.88%, SiO 2 48.83%, TiO 2 0.95%, MgO13.23% and the remaining impurities; the refractoriness is 1380°C; after mixing evenly, discharge and store the material for 14 hours;

[0040] 2) Forming by hydraulic press, controlling the porosity of the wet billet to 19.5%, and the bulk density of the wet billet to 2.60g / cm 3 ;

[0041] 3) Dry in the drying hole, the drying temperature is 60°C, the sound is good without cracks before installation, and the residual moisture is 0.50%;

[0042] 4) Firing in a tunnel kiln with a firing temperature of 1350°C and a firing time of 7 hours.

Embodiment 3

[0044] 1) Add the raw materials into the planetary wet mill and stir for 20 minutes according to the proportion; the weight parts of the raw materials are: 3-1mm mullite M4712 parts, 1-0mm mullite M47 14 parts, 2-1mm cordierite 17 parts, grain 10 parts of cordierite with a diameter of 2 o 3 50.20%, Fe 2 o 3 0.86%, SiO 2 47.01%, TiO 2 0.93%, MgO 0.06%, CaO 0.69%, Na 2 Al 2 o 3 34.39%, Fe 2 o 3 0.88%, SiO 2 48.83%, TiO 2 0.95%, MgO13.23% and the remaining impurities; the refractoriness is 1380°C; after mixing evenly, discharge and store the material for 13 hours;

[0045] 2) Forming by hydraulic press, controlling the porosity of the wet billet to 19%, and the bulk density of the wet billet to 2.53 g / cm 3 ;

[0046] 3) Dry in the drying hole, the drying temperature is 50°C, the sound is good without cracks before installation, and the residual moisture is 0.48%;

[0047] 4) Firing in a tunnel kiln with a firing temperature of 1350°C and a firing time of 7 hours.

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Abstract

The invention discloses a cordierite kiln furniture sagger and a preparation method thereof, and belongs to the technical field of refractory materials. The cordierite kiln furniture sagger is characterized in that the raw materials are as follows by weight: 10-15 parts of mullite M47 of 3-1 mm, 10-15 parts of mullite M47 of 1-0 mm, 16-20 parts of cordierite of 2-1 mm, 7-12 parts of cordierite with the particle size less than 150 meshes, 8-13 parts of sillimanite of 0.5-0 mm, 7-13 parts of andalusite with the particle size less than 200 meshes, 4-7 parts of silicon carbide with the particle size less than 240 meshes, 5-10 parts of vice-white corundum with the particle size less than 240 meshes, 3-6 parts of aluminum oxide Ca 370C micro powder, 4-6 parts of Suzhou soil of 0.045 mm, 3.5-5.5parts of paper pulp, 0.3-0.6 part of phosphoric acid, and 0.3-0.6 part of dextrin. The high temperature load softening temperature of thecordierite kiln furniture sagger is enough, the refractorinessis higher, and the quick cooling and heating resistance property is excellent. After being repeatedly heated and cooled, the sagger still keeps certain mechanical strength and is not cracked.

Description

technical field [0001] A cordierite kiln furniture sagger and a preparation method thereof belong to the technical field of refractory materials. Background technique [0002] Sagger is a kind of kiln furniture that has been used for a long time in the kiln, and it is a consumable material. It is widely used in ceramics, building materials, chemical industry, metallurgy, glass and other industries. Most of the currently used saggers have limited load-carrying capacity due to their heavy weight, high energy consumption, poor heat permeability, easy to crack during use, high breakage rate, and short service life. How to improve the mechanical strength, high-temperature load softening temperature, rapid cooling and rapid heating resistance, refractoriness, and thermal conductivity of the sagger is an urgent problem to be solved now. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/195C04B35/622C04B35/626F27D5/00
CPCC04B35/195C04B35/622C04B35/62605F27D5/0012C04B2235/6567C04B2235/9607C04B2235/602C04B2235/77C04B2235/96Y02P40/60
Inventor 孙华云李明晶于乐海李嘉艺
Owner SHANDONG VOCATIONAL COLLEGE OF IND
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