Medium-density alkali-resistant brick for rotary kiln and preparation method thereof

A medium-density, rotary kiln technology, applied in the field of refractory materials, can solve problems such as increased heat dissipation of the kiln shell, increased heat consumption of clinker, thermal expansion of the shell, etc., to reduce energy and equipment power consumption, reduce heat loss, The effect of improving the working environment

Inactive Publication Date: 2013-04-17
SUZHOU LOW CARBON ENERGY CONSERVATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The temperature of the outer wall of the cylinder is high. On the one hand, it increases the heat dissipation of the kiln cylinder, thereby increasing the heat consumption of the clinker and causing an increase in the unit cost of the clinker; High, especially in the later period of use or in summer, it will bring great hidden dangers to the normal oper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1

[0022] Raw materials and weight parts adopted in the present embodiment are:

[0023] 62 parts of 0~8mm burnt gemstones, 20 parts of burnt gemstone powder not larger than 180 meshes, 8 parts of clay, 10 parts of 0~3mm corundum hollow spheres, 5 parts of industrial lignosulfonate solution with binder.

[0024] The preparation method of medium-density alkali-resistant bricks for rotary kiln comprises the following steps in sequence:

[0025] A. Ingredients: After mixing the granular material, lightweight aggregate and binder evenly in proportion, then add powder in proportion and stir to form a uniform material;

[0026] B. Forming: Add the homogeneous material formed in step A into the mold, and form it into a green body by vibrating on a vibrating press. The vibrating pressure is 30 tons, and the product density is 2.0g / cm 3 , the hollow ball breakage rate is 15%;

[0027] C. Drying and firing: After drying the green body formed in step B at 80oC, p...

Example Embodiment

[0029] Example 2

[0030] Raw materials and weight parts adopted in the present embodiment are:

[0031] 30 parts of 0~8mm silica, 43 parts of coke powder not larger than 180 mesh, 7 parts of clay, 10 parts of 0~1mm aluminum oxide hollow sphere, 10 parts of 0~1mm aluminum titanium hollow sphere, plus binder methyl cellulose solution 8 servings.

[0032] The preparation method of medium-density alkali-resistant bricks for rotary kiln comprises the following steps in sequence:

[0033] A. Ingredients: After mixing the granular material, lightweight aggregate and binder evenly in proportion, then add powder in proportion and stir to form a uniform material;

[0034] B. Forming: Add the homogeneous material formed in step A into the mold, and use a 300-ton press to form it, control the stroke, keep the product size fixed, and the product reaches a density of 1.6g / cm 3 , the crushing rate of lightweight aggregate is 10%;

[0035] C. Drying and firing: After the green body...

Example Embodiment

[0036] Example 3

[0037] Raw materials and weight parts adopted in the present embodiment are:

[0038] 56 parts of 0~8mm pyrophyllite, 19 parts of pyrophyllite powder not larger than 180 mesh, 8 parts of clay, 4 parts of 0~3mm corundum mullite hollow ball, 4 parts of 0~5mm light ceramsite, 0~3mm light mollite 9 parts of stone aggregate, 6 parts of yellow dextrin solution as binder.

[0039] The preparation method of medium-density alkali-resistant bricks for rotary kiln comprises the following steps in sequence:

[0040] A. Ingredients: After mixing the granular material, lightweight aggregate and binder evenly in proportion, then add powder in proportion and stir to form a uniform material;

[0041] B. Forming: Add the homogeneous material formed in step A into a mold with fixed size, and form it into a green body by vibrating on a vibrating press. The vibrating pressure is 30 tons, and the product density is 1.8g / cm 3 , the crushing rate of lightweight aggregate i...

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Abstract

The invention discloses a medium-density alkali-resistant brick and a preparation method thereof. The product density is reduced by introducing lightweight aggregate into high-density alkali-resistant brick; and the adopted raw materials comprise 30-62 parts of flint clay with the granularity of 0-8mm or silica with the granularity of 0-8mm or pyrophyllite with the granularity of 0-8mm or high-silicon waste porcelain with the granularity of 0-8mm, 19-43 parts of flint clay powder not larger than 180 meshes or pyrophyllite powder not larger than 180 meshes, 4-8 parts of clay, 10-20 parts of lightweight aggregate and 5-8 parts of additional binding agent all by weight. The preparation process comprises the steps of mixing, forming, drying, firing and the like. Compared with high-density alkali-resistant brick, the medium-density alkali-resistant brick prepared through the invention has the advantages of low heat conductivity coefficient, light weight and the like, can reduce heat loss and the consumption of energy and equipment power in the using process, and realizes an effect of improving the working environment and saving energy and reducing emission.

Description

technical field [0001] The invention relates to a medium-density alkali-resistant brick and a preparation method thereof, belonging to the technical field of refractory materials. Background technique [0002] With the continuous emergence of new technologies for cement production, the main equipment of cement production is developing in the direction of large-scale, increasing production, improving quality, saving energy, reducing consumption, and reducing costs have become the key to increasing efficiency in production management. Most of the existing refractory bricks and heat insulation bricks have a single structure, and bricks with various properties need to be used together. If they are used on relatively fixed equipment, such as tunnel kilns and downdraft kilns, they can meet the requirements when used together. ; But on some relatively moving equipment, such as a rotary kiln, it is difficult to meet the requirements when used together. Some manufacturers and resear...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/622
Inventor 王家邦
Owner SUZHOU LOW CARBON ENERGY CONSERVATION TECH
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