Efficient and energy-saving type high temperature mortar for cement rotary kilns, and preparation method thereof

A cement rotary kiln and high-temperature glue technology, which is applied in the field of raw materials for refractory materials, can solve problems such as damage to refractory bricks, low bond strength, and brick lining distortion, and achieve improved bond strength, strong erosion resistance, and solve the problem of brick lining distorted effect

Active Publication Date: 2015-09-30
PINGXIANG KEXING FURNACE MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention has very high bonding strength at low temperature, can bond bricks and bricks into a whole, the bonding strength is greater than the strength of bricks, and the bonding strength continues to increase with the increase of temperature, high temperature resistance, thermal shock resistance Good, strong anti-corrosion ability, the invention solves the problem of low bonding strength of mud for refractory bricks, avoids the problems of brick lining distortion, brick falling red kiln, and premature damage of refractory bricks in the production process of cement rotary kiln, and improves The service life of the cement rotary kiln is extended, thereby reducing the consumption of refractory materials, reducing heat loss, reducing energy consumption, improving the production quality of cement clinker, and improving enterprise benefits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 45 kg of fused mullite, 10 kg of corundum fine powder, 5 kg of activated alumina fine powder, 5 kg of andalusite fine powder, 3 kg of kyanite fine powder, Y 2 o 3 (yttrium oxide) 1 kg, carboxymethyl cellulose 0.7 kg, sodium tripolyphosphate 0.15 kg, sodium hexametaphosphate 0.15 kg. First mix high alumina bauxite, corundum fine powder, activated alumina fine powder, andalusite fine powder, and kyanite fine powder according to the formula ratio, and stir evenly; then mix yttrium oxide, carboxymethyl cellulose, sodium tripolyphosphate, Sodium hexametaphosphate is mixed according to the formula ratio, and stirred evenly; the above-mentioned twice-mixed materials are added to the spiral mixer and stirred evenly for later use.

[0019] When using, add 30 kg of silica-alumina sol, stir well and use it.

[0020] The detection performance index is: Al 2 o 3 Content 71.9%; refractoriness 1790°C; cold flexural strength: 110°C×24H: 6.9Mpa, 1100°C×3H: 11.5Mpa, 1300°C×3H:...

Embodiment 2

[0022] Weigh 40 kg of fused mullite, 12 kg of corundum fine powder, 8 kg of activated alumina fine powder, 10 kg of andalusite fine powder, 4 kg of kyanite fine powder, Y 2 o 3 (yttrium oxide) 3 kg, carboxymethyl cellulose 0.6 kg, sodium tripolyphosphate 1.0 kg, sodium hexametaphosphate 0.3 kg. First mix high alumina bauxite, corundum fine powder, activated alumina fine powder, andalusite fine powder, and kyanite fine powder according to the formula ratio, and stir evenly; then mix yttrium oxide, carboxymethyl cellulose, sodium tripolyphosphate, Sodium hexametaphosphate is mixed according to the formula ratio, and stirred evenly; the above-mentioned twice-mixed materials are added to the spiral mixer and stirred evenly for later use.

[0023] When using, add 25kg of silica-alumina sol, stir well and use it.

[0024] The detection performance index is: Al 2 o 3 Content 71.8%; refractoriness 1790°C; cold flexural strength: 110°C×24H: 6.3Mpa, 1100°C×3H: 11.2Mpa, 1300°C×3H: 1...

Embodiment 3

[0026] Weigh 43.5 kg of fused mullite, 15 kg of corundum fine powder, 10 kg of activated alumina fine powder, 4.5 kg of andalusite fine powder, 3.5 kg of kyanite fine powder, Y 2 o 3 (yttrium oxide) 1.5 kg, carboxymethyl cellulose 0.5 kg, sodium tripolyphosphate 0.5 kg, sodium hexametaphosphate 1.0 kg. First mix high alumina bauxite, corundum fine powder, activated alumina fine powder, andalusite fine powder, and kyanite fine powder according to the formula ratio, and stir evenly; then mix yttrium oxide, carboxymethyl cellulose, sodium tripolyphosphate, Sodium hexametaphosphate is mixed according to the formula ratio, and stirred evenly; the above-mentioned twice-mixed materials are added to the spiral mixer and stirred evenly for later use.

[0027] When using, add 20kg of silica-alumina sol, stir well and use it.

[0028] The detection performance index is: Al 2 o 3 Content 71.6%; refractoriness 1790°C; cold flexural strength: 110°C×24H: 6.1Mpa, 1100°C×3H: 10.9Mpa, 1300...

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Abstract

The present invention discloses an efficient and energy-saving type high temperature mortar for cement rotary kilns, wherein the components in the formula comprise, by weight, 40-55 parts of fused mullite, 6-15 parts of corundum fine powder, 2-10 parts of active alumina micro-powder, 2-10 parts of andalusite fine powder, 3-6 parts of kyanite fine powder, 0.5-3 parts of Y2O3, 0.5-2 parts of carboxymethyl cellulose, 0.1-1 part of sodium tripolyphosphate, 0.1-1 part of sodium hexametaphosphate, and 20-35 parts of a silicon-aluminum sol. The present invention further relates to a preparation method of the high temperature mortar. According to the present invention, the efficient compounding of the silicon-aluminum sol is used, and the mullite is easily generated during the high temperature sintering process, such that the structure is compact, the performance is stable, the adhesion strength is continuously improved along with the temperature increase, and the high temperature resistance and the thermal shock resistance are good; and the high adhesion strength is provided at the low temperature, and the adhesion strength is greater than the brick strength, such that the sufficient adhesion strength is provide so as to ensure no generation of bricking lining distortion, brick falling and other phenomena during the drying on the cement rotary kiln.

Description

technical field [0001] The invention belongs to the technical field of raw materials for refractory materials, and in particular relates to a high-efficiency and energy-saving high-temperature cement for cement rotary kilns. The invention also relates to a preparation method of the high-temperature cement. Background technique [0002] Cement rotary kiln is the main equipment for cement production. Raw meal powder is fed into the kiln shell from the high-end feeding pipe at the end of the kiln shell. Due to the inclination of the kiln shell and the slow rotation of the kiln shell, the material will roll along the circumferential direction and roll along the axial direction. Compound motion moving from high end to low end. The raw material is decomposed and fired at high temperature in the kiln. After the clinker is fired, it is unloaded from the low end of the kiln shell and enters the cooling machine. After cooling, grinding, etc. After the process, the finished cement is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 黎根源黎松沅
Owner PINGXIANG KEXING FURNACE MATERIAL
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