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Pyrophyllite brick and preparation method thereof

A manufacturing method and pyrophyllite technology, which are applied in the field of pyrophyllite bricks and their preparation, can solve the problems of not being able to adapt to the use of the preheating zone and the decomposition zone, the effect is not very ideal, the service life is affected, and it is easy to reach the firing temperature. Control, hinder the penetration of slag, and save energy

Inactive Publication Date: 2013-09-11
宜兴新威利成耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In iron and steel enterprises, since the operating temperature of the ladle is around 1400°C, the requirements for refractory materials are relatively low, and cheap clay refractory materials have been used as the lining, but clay bricks will shrink during high temperature use, resulting in Larger brick joints are likely to cause molten iron leakage accidents; and clay bricks are used as iron ladle linings, which are prone to slag and iron stains during use, thus affecting the service life
In order to reduce the slag and iron sticking during the use of the iron ladle and improve the life of the bag, people have been using the method of adding a cover to the bag mouth to reduce the slag and iron sticking, but the effect is not very satisfactory.
In addition, in the cement rotary kiln, the circulation and enrichment of alkali seriously corrode the lining of the kiln, especially for the new dry process kiln, the traditional clay brick cannot be used in the preheating zone and the decomposition zone, after a variety of refractory materials use tests , even the use of magnesia refractories cannot meet the requirements

Method used

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  • Pyrophyllite brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The raw materials contained in a kind of pyrophyllite brick are shown in Table 1:

[0022] Table 1 Raw materials contained in wax stone bricks

[0023] parts by mass 5 ~ 3mm pyrophyllite raw meal 13 3 ~ 1mm pyrophyllite raw material 20 1~0mm pyrophyllite raw material 15 ≤200 mesh pyrophyllite raw meal 27 pyrophyllite clinker 10 Zircon powder 5 Guangxi clay 8 Sulfurous acid pulp waste liquid 2

[0024] The manufacture method of this kind leaf stone brick comprises the following steps:

[0025] 1) Ingredients: Pour pyrophyllite raw meal, wax stone clinker, additives, and clay into the mixer according to the mass fraction ratio required in Table 1, and dry mix for 3 to 5 minutes to mix evenly, then add sub Mix sulfuric acid pulp waste liquid for 15-20 minutes;

[0026] 2) Trapped material: trap the mixed raw materials for 24 hours;

[0027] 3) Forming: The material to be trapped is pressed and formed in a v...

Embodiment 2

[0031] The raw materials contained in a kind of pyrophyllite brick are shown in Table 2:

[0032] Table 2 Raw materials contained in wax stone bricks

[0033] raw material name parts by mass 5 ~ 3mm pyrophyllite raw meal 14 3 ~ 1mm pyrophyllite raw material 21 1~0mm pyrophyllite raw material 16 ≤200 mesh pyrophyllite raw meal 30 pyrophyllite clinker 5 Silicon carbide 7 Guangxi clay 5 water glass 2

[0034] In Example 2, wax stone bricks were prepared, the molding pressure was 70 MPa, the firing temperature was 1100° C., the holding time was 5 hours, and the rest of the steps were the same as in Example 1.

Embodiment 3

[0036] The raw materials contained in a kind of pyrophyllite brick are shown in Table 3 below:

[0037] Table 3 Raw materials contained in wax stone bricks

[0038] raw material name parts by mass 5 ~ 3mm pyrophyllite raw meal 13 3 ~ 1mm pyrophyllite raw material 20 1~0mm pyrophyllite raw material 17 ≤200 mesh pyrophyllite raw meal 35 Phyllophyllite clinker 5 Zircon powder 5 Suzhou soil 4 Sodium lignosulfonate 1

[0039] In Example 3, wax stone bricks were prepared, the molding pressure was 85 MPa, the firing temperature was 1150° C., the holding time was 8 hours, and the rest of the steps were the same as in Example 1.

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Abstract

The invention belongs to semi-silica refractory materials, and in particular relates to a pyrophyllite brick and a preparation method thereof. The pyrophyllite brick is prepared by mixing a pyrophyllite raw material, a pyrophyllite clinker, clay, an additive and a binding agent, and performing the processes of material preparing, aging, shaping, drying and sintering. The pyrophyllite brick prepared by the method has the characteristics of high load softening temperature, stable volume and slight expansion at an operating temperature, and can ensure that a brickwork is compact in structure, small in brickwork joint and good in integrity; and meanwhile, when the pyrophyllite brick is in contact with slag, because a high-viscosity liquid-phase 'enamel layer' formed on the surface, the pyrophyllite brick can block up slag infiltration, and the erosion resistance of the pyrophyllite brick is improved.

Description

technical field [0001] The invention belongs to semi-siliceous refractory materials, in particular to a pyrophyllite brick and a preparation method thereof. Background technique [0002] In iron and steel enterprises, since the operating temperature of the ladle is around 1400°C, the requirements for refractory materials are relatively low, and cheap clay refractory materials have been used as the lining, but clay bricks will shrink during high temperature use, resulting in Brick joints become larger, which is likely to cause molten iron leakage accidents; and clay bricks are used as iron ladle linings, which are prone to slag and iron stains during use, thereby affecting the service life. In order to reduce the slag and iron sticking during the use of the iron ladle and improve the life of the bag, people have always adopted the method of adding a cover to the bag mouth to keep the slag and iron sticky, but the effect is not very satisfactory. In addition, in the cement ro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 钱元英蒋鑫匡宇航
Owner 宜兴新威利成耐火材料有限公司
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