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Process for preparing vapour pressure air-entrained concrete light heat-insulation fireproof bricks by porcelain clay tailings

An autoclaved aerated, light-weight heat-insulating technology, applied in the field of refractory brick preparation, can solve the problems such as the absence of light-weight refractory bricks in aerated concrete, reduce the temperature loss of the kiln body, achieve remarkable energy-saving effects, and heat insulation good effect

Inactive Publication Date: 2008-10-22
福建省万旗非金属材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, there are no relevant reports and patented technologies for the preparation of aerated concrete lightweight refractory bricks using china clay tailings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Mix and grind 54kg of gypsum and 540kg of lime in a fine grinder to achieve pre-activation treatment to make gypsum lime powder, which is sent to the lime powder silo through the bucket elevator for standby.

[0031](2) Take 3000kg of porcelain clay tailings in the ball mill feeding hopper, gradually add the ball mill to grind, control the pulp degree at about 60%, add a total of about 2000kg of water to make slurry while grinding the ball mill, and pump it by the mud pump Put it into the slurry storage tank for standby.

[0032] (3) Put 800kg PC32.5R bagged cement into the cement storage tank for later use.

[0033] (4) Each pouring mold (2.72m 3 ) Get 1.25kg aluminum powder paste, 1.10kg pull open powder and 2.20kg self-made composite admixture (turpentine amine soap: triterpene saponin=3: 7), put into aluminum powder mixer and stir into 5% water suspension Reserve in the aluminum powder storage tank (the above-mentioned aluminum powder paste, foam stabilizer, a...

Embodiment 2

[0037] (1) Mix and grind 70kg of gypsum and 770kg of lime in a fine grinder to achieve pre-activation treatment to make gypsum lime powder, which is sent to the lime powder silo through the bucket elevator for standby.

[0038] (2) Take 3000kg of porcelain clay tailings in the ball mill feeding hopper, gradually add the ball mill to grind, control the pulp degree at about 61%, add a total of about 1900kg of water to make slurry while grinding the ball mill, and pump it by the mud pump Put it into the slurry storage tank for standby.

[0039] (3) Put 720kg PC42.5R bagged cement into the cement storage tank for later use.

[0040] (4) Each pouring mold (2.72m 3 ) get 1.35kg aluminum powder paste, 1.15kg saponins powder and 2.0kg self-made composite admixture (turpentine amine soap: triterpene saponin = 4: 6), put into aluminum powder mixer and stir into 5% water suspension and pour aluminum Reserve in the powder storage tank (the above-mentioned aluminum powder paste, foam sta...

Embodiment 3

[0044] (1) Mix and grind 68kg gypsum and 700kg lime in a fine grinder to achieve pre-activation treatment to make gypsum lime powder, which is sent to the lime powder silo by bucket elevator for standby.

[0045] (2) Take 3000kg of porcelain clay tailings in the ball mill feeding hopper, gradually add the ball mill to grind, control the pulp degree at about 62%, add a total of about 1850kg of water to make slurry while grinding the ball mill, and pump it by the mud pump Put it into the slurry storage tank for standby.

[0046] (3) Put 800kg PC42.5R bulk cement into the cement storage tank for later use.

[0047] (4) Each pouring mold (2.72m 3 ) get 1.3kg aluminum powder paste, 1.25kg acacia powder and 1.8kg self-made composite admixture (turpentine amine soap: triterpene saponin=5: 5), put into aluminum powder mixer and stir into 5% water suspension and pour aluminum Reserve in the powder storage tank (the above-mentioned aluminum powder paste, foam stabilizer, and self-made...

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Abstract

The invention relates to a firebrick preparation method, in particular to a method of preparing an autoclaved aerated concrete light heat insulating firebrick with porcelain clay tailings. The invention takes the porcelain clay tailings as the main raw material, a certain amount of cement, lime, foam stabilizer of nekal bx or soap pod powder and aluminum power paste are added, and then plaster and self-made compound admixtures are added to prepare into a sizing agent. The later preparing procedures are as follows: pour mold for gas-molding and stilling, dry heat pre-curing, cutting and stacking, being steamed in a caldron and being taken out of the caldron, and finally the firebrick is formed. The firebrick is put into the caldron to steam for 5 to 7 hours under constant voltage; the steam pressure is 1.1 to 1.5 MPa and the temperature is from 185 DEG C to 195 DEG C. The firebricks prepared by the method have good effect of thermal insulation in stove owing to low coefficient of heat conductivity, thereby being used in the low temperature section of ceramics kiln collapses, tunnels, resistance furnace and being capable of realizing energy saving. The firebricks prepared by the method also have the advantage of being light owing to the volume and density being less than those of the majority of light heat insulating firebricks.

Description

technical field [0001] The invention relates to a method for preparing refractory bricks, in particular to a method for preparing autoclaved aerated concrete lightweight heat-insulating refractory bricks by using china clay tailings. technical background [0002] Refractory bricks are widely used in thermal kilns such as industrial smelting, forging, and porcelain firing, and have become an indispensable and important material. With the advancement of technology, refractory bricks have gradually developed from heavy refractory bricks to various lightweight refractory bricks. Lightweight heat-insulating refractory bricks are composed of solid phase and gaseous phase, and the gas forms isolated air pockets in the bricks. Therefore, light-weight heat-insulating refractory bricks have a low thermal conductivity and play a better role in thermal kilns. thermal insulation effect. At present, in addition to the necessary pore-forming materials such as floating beads, perlite, ver...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 林积梁谢文清罗伟
Owner 福建省万旗非金属材料有限公司
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