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Spray coating for cement kiln preheater

A preheater and paint spraying technology, applied in the field of spray paint for cement kiln preheater, can solve the problems of material consumption equipment weight, high thermal conductivity of spray paint, limited application range, etc., achieve good anti-skin performance, reduce thermal conductivity coefficient, effect of low bulk density and thermal conductivity

Active Publication Date: 2020-11-20
ZHEJIANG KINGCRED NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although ceramic inner cylinders made of silicon carbide and other materials have been used in cement kiln preheaters, their application range is greatly limited due to their high price.
Many units have also developed spray coatings suitable for cement kiln preheaters, but most of them are made of heavy materials with high density. The prepared spray coatings have relatively high thermal conductivity and require a large construction thickness to achieve To prevent heat loss, it is easy to cause material consumption and equipment weight increase

Method used

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  • Spray coating for cement kiln preheater
  • Spray coating for cement kiln preheater
  • Spray coating for cement kiln preheater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A spray paint for a cement kiln preheater, comprising the following components and parts by weight:

[0020]

[0021]

[0022] Wherein, Al in the microporous mullite 2 o 3 The mass percentage content is not less than 60%; the Al in the alumina hollow sphere 2 o 3 The mass percentage content is not less than 99%; Al in the calcium aluminate cement 2 o 3 The mass percentage content is not less than 50%; ZrO in the zircon powder 2 The mass percentage content of not less than 32%; SiO in the silicon micropowder 2 The mass percentage content is not less than 94%.

Embodiment 2

[0024] A spray paint for a cement kiln preheater, comprising the following components and parts by weight:

[0025]

[0026] Wherein, Al in the microporous mullite 2 o 3 The mass percentage content is not less than 60%; the Al in the alumina hollow sphere 2 o 3 The mass percentage content is not less than 99%; Al in the calcium aluminate cement 2 o 3 The mass percentage content is not less than 50%; ZrO in the zircon powder 2 The mass percentage content of not less than 32%; SiO in the silicon micropowder 2 The mass percentage content is not less than 94%.

Embodiment 3

[0028] A spray paint for a cement kiln preheater, comprising the following components and parts by weight:

[0029]

[0030] Wherein, Al in the microporous mullite 2 o 3 The mass percentage content is not less than 60%; the Al in the alumina hollow sphere 2 o 3 The mass percentage content is not less than 99%; Al in the calcium aluminate cement 2 o 3 The mass percentage content is not less than 50%; ZrO in the zircon powder 2 The mass percentage content of not less than 32%; SiO in the silicon micropowder 2 The mass percentage content is not less than 94%.

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Abstract

The invention relates to a spray coating for a cement kiln preheater. The spray coating comprises the following components in parts by weight: 20-33 parts of microporous mullite, 30-38 parts of alumina hollow spheres, 10-20 parts of calcium aluminate cement, 8-12 parts of alumina powder, 4-8 parts of zirconite powder, 3-6 parts of soft clay, 2-5 parts of silica powder and 1-2 parts of lithium chloride. The spray coating for the cement kiln preheater, prepared by the invention, has relatively strong erosion resistance and good thermal shock stability; the volume density and the heat conductivity coefficient are low, the heat preservation and insulation performance is good, the use condition requirements of the cement kiln preheater are well met, the expected service life of the preheater exceeds two years, and the stability of cement kiln production operation is effectively guaranteed.

Description

technical field [0001] The invention belongs to the technical field of unshaped refractory materials, and in particular relates to a spray paint for a cement kiln preheater. Background technique [0002] With the substantial increase in the scale of cement production and equipment specifications, the specifications and stages of cement kiln preheaters are increasing, and under the background of great progress in the co-processing of industrial and municipal waste in cement kilns, industrial waste and low-grade raw materials from different industries Fuel is widely used as cement raw fuel, and some harmful elements and heavy metal elements are also brought into the system, which puts forward stricter requirements on the anti-skinning performance of the cement kiln preheater. In addition, the pace of my country's economic construction has slowed down at present, and the cement industry has experienced serious overcapacity. Improving the utilization efficiency of heat energy an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/106F27D1/16
CPCC04B35/106F27D1/1636C04B2235/3463C04B2235/3248C04B2235/349C04B2235/3418C04B2235/444C04B2235/77C04B2235/96C04B2235/9607
Inventor 朱国平王立旺向若飞李新明王琪彭晶晶
Owner ZHEJIANG KINGCRED NEW MATERIAL CO LTD
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