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High-alumina brick resisting cement clinker erosion and its production method

A technology of cement clinker and a manufacturing method, applied in the field of refractory materials, can solve the problems of high price, alkali leaching resistance, unsatisfactory wear resistance, short service life of bricks, etc., and achieves low cost, high alkali leaching resistance, The effect of large wear coefficient

Inactive Publication Date: 2008-08-13
无锡远能耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The load softening of anti-stripping high-alumina bricks used in the transition zone of large cement rotary kilns is stable at 1470°C. Due to the erosion of cement clinker, the alkali resistance and wear resistance of the bricks are not ideal, and the service life of the bricks is short. The domestic market is large. Some of them rely on imports, and the imported products are pure high alumina bricks, made of bauxite, which are expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1, high alumina bricks resistant to cement clinker erosion, its components and weight ratio are:

[0016] Bauxite particles > 3mm 25

[0017] Bauxite particles 3-1mm 20

[0018] Alumina fine powder<1mm 20

[0019] Sillimanite <= 0.3mm 25

[0020] Clay <0.088mm 10

[0021] Plus:

[0022] Aluminum phosphate 2

[0023] The manufacturing method is to mix the materials according to the ratio and press them into semi-finished products under a friction press of more than 400 tons, and then put the semi-finished products in a shuttle kiln or tunnel kiln and burn them at 1530-1590°C for 70-80 hours and keep them warm for 5-10 hours. Hours later, the finished product is obtained after cooling out of the kiln.

Embodiment 2

[0024] Embodiment 2, high alumina bricks resistant to cement clinker erosion, its components and weight ratio are:

[0025] Bauxite particles > 3mm 20

[0026] Bauxite particles 3-1mm 20

[0027] Alumina fine powder<1mm 25

[0028] Sillimanite <= 0.3mm 25

[0029] Zircon sand powder <= 0.088μm 5

[0030] Clay <0.088mm 5

[0031] Plus:

[0032] Aluminum phosphate 1

Embodiment 3

[0033] Embodiment 3, high-alumina bricks resistant to cement clinker erosion, its components and weight ratio are:

[0034] Bauxite particles > 3mm 30

[0035] Bauxite particles 3-1mm 15

[0036] Alumina fine powder<1mm 15

[0037] Sillimanite <= 0.3mm 35

[0038] Clay <0.088mm 5

[0039] Plus:

[0040] Aluminum phosphate 3

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Abstract

This invention relates to a high-alumina brick which can resist cement clinker erosion, belonging to the fire resistive material field. The high-alumina brick is produced by charging bauxite granule, bauxite fines, ganister, zirconium powder, clay and aluminium phosphate, with characteristics of high resistance to alkaline erosion, high abrasion resistance index, long durability, low cost, and broad application, which can be used in the burnt belt behind the cement kiln, the bearing wall, the bearing furnace bar, and the gutter of the glass kiln, the molten pool major string, the kiln wall and other important parts of the water glass kiln.

Description

technical field [0001] The invention belongs to the field of refractory materials, in particular to a cement clinker erosion-resistant high-alumina brick used in the transition zone of a large-scale cement rotary kiln, and at the same time provides a manufacturing method of the high-alumina brick. technical background [0002] The anti-stripping high-alumina bricks used in the transition zone of large-scale cement rotary kilns have a stable load softening temperature of 1470°C. Due to the erosion of cement clinker, the alkali resistance and wear resistance of the bricks are not ideal, and the service life of the bricks is short. The domestic market is large. Some of them rely on imports, and the imported products are pure high-alumina bricks made of bauxite, which are expensive. Contents of the invention [0003] The utility model aims at overcoming the above disadvantages, and provides a cement clinker corrosion-resistant high-alumina brick with high anti-alkali immersion...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66C04B33/13C04B33/02
Inventor 吴玲
Owner 无锡远能耐火材料有限公司
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