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Casting material for rear kilneye of cement rotary kiln rear kiln opening

A cement rotary kiln and castable technology, which is applied in the field of refractory materials, can solve the problems of use mode and product performance in the application field that cannot meet the application requirements of refractory materials, and achieves good resistance to structural spalling, reduced maintenance times, and excellent wear resistance. Effect

Inactive Publication Date: 2019-01-18
ZHEJIANG KINGCRED NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patents CN107311677A, CN107285786A, CN105036774B, etc. all disclose the use of calcium aluminate titanate as a raw material to prepare refractory materials, but in terms of use, application fields, and product performance, they cannot meet the application requirements for refractory materials at the kiln mouth of the cement rotary kiln.

Method used

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  • Casting material for rear kilneye of cement rotary kiln rear kiln opening
  • Casting material for rear kilneye of cement rotary kiln rear kiln opening
  • Casting material for rear kilneye of cement rotary kiln rear kiln opening

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A casting material for the rear kiln mouth of a cement rotary kiln, comprising the following components and parts by weight:

[0021]

[0022]

[0023] Wherein, the Al in the mullite 2 o 3 The mass percentage content of not less than 68%. Al in the calcium aluminate titanate 2 o 3 The mass percentage of CaO is not less than 70%, the mass percentage of CaO is not less than 10%, and the mass percentage of TiO 2 The mass percentage content of not less than 10%. Al in the calcium aluminate cement 2 o 3 The mass percentage content of not less than 50%. The water reducer is polyphosphate.

Embodiment 2

[0025] A casting material for the rear kiln mouth of a cement rotary kiln, comprising the following components and parts by weight:

[0026]

[0027] Wherein, the Al in the mullite 2 o 3 The mass percentage content of not less than 68%. Al in the calcium aluminate titanate 2 o 3 The mass percentage of CaO is not less than 70%, the mass percentage of CaO is not less than 10%, and the mass percentage of TiO 2 The mass percentage content of not less than 10%. Al in the calcium aluminate cement 2 o 3 The mass percentage content of not less than 50%. The water reducer is polyphosphate.

Embodiment 3

[0029] A casting material for the rear kiln mouth of a cement rotary kiln, comprising the following components and parts by weight:

[0030]

[0031] Wherein, the Al in the mullite 2 o 3 The mass percentage content of not less than 68%. Al in the calcium aluminate titanate 2 o 3 The mass percentage of CaO is not less than 70%, the mass percentage of CaO is not less than 10%, and the mass percentage of TiO 2 The mass percentage content of not less than 10%. Al in the calcium aluminate cement 2 o 3 The mass percentage content of not less than 50%. The water reducer is polyphosphate.

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Abstract

The invention relates to a casting material for a rear kilneye of a cement rotary kiln rear kiln opening. The casting material is prepared from the following ingredients in parts by weight: 18 to 25 parts of mullite being 8 to 5 mm, 15 to 20 parts of mullite being 5 to 3 mm, 5 to 10 parts of calcium alumino-titanatetitanium calcium aluminate being 3 to 1 mm, 20 to 25 parts of calcium alumino-titanatetitanium calcium aluminate being 1 to 0 mm, 12 to 18 parts of calcium alumino-titanatetitanium calcium aluminate powder not greater than 200 meshes, 6 to 10 parts of alumina powder, 4 to 8 parts ofcalcium aluminate cement, 2 to 4 parts of silica powdersilicon micro powder, 0.01 to 0.03 part of explosion-proof fiber and 0.01 to 0.03 part of water reducing agents. Mullite and calcium alumino-titanatealuminum titanium calcium are used as composite aggregates; mullite reaction in substrates and material phase change in calcium alumino-titanatetitanium calcium aluminate are used for generatingmicro expansion effects; the thermal shock resistanceheat shock resistant performance of the casting materials is improved; meanwhile, the oxidization phenomenon due to introduction of silicon carbidematerials is also avoided.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a casting material for the back kiln mouth of a cement rotary kiln. Background technique [0002] The new dry-process cement rotary kiln has the characteristics of higher kiln temperature, faster kiln speed, increased alkali erosion, and more complex structure. The traditional cement kiln refractories can no longer meet the use of the new dry-process cement kiln, and must be developed accordingly. Excellent performance , A new refractory material suitable for the new dry process cement kiln. The working temperature of the rear kiln mouth is usually between 1100 and 1200 ° C. Although the temperature of the front kiln mouth is lower than that of the front kiln mouth, if the front kiln mouth castable is used as the lining under this temperature condition, it is difficult to produce sufficient sintering, and The kiln mouth is more severely worn and washed t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66
Inventor 朱国平王立旺李新明朱其良王琪彭晶晶
Owner ZHEJIANG KINGCRED NEW MATERIAL CO LTD
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