A microcrystal material used for a cement kiln

A technology of microcrystalline materials and cement kilns, which is applied in the field of inorganic non-metallic materials processing and microcrystalline materials, can solve the problems of general skinning resistance and short service life, and improve thermal shock resistance stability and corrosion resistance Strong, the effect of improving high temperature strength

Active Publication Date: 2019-01-01
ZANHUANG JINYU CEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent document CN201210311621.2 records an anti-skinning spray coating for cement kiln, which consists of coke gemstone, SiC, Guangxi white clay, α-Al 2 o 3 Micro powder, high alumina fine powder, SiC and SiC fine powder, pure calcium aluminate cement, spodumene, pyrophyllite and polypropylene fiber. Excellent anti-skinning effect, the rebound of spraying construction is small, but the anti-skinning performance is average, and the service life is not long

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The utility model relates to a microcrystalline material for a cement kiln, and the raw materials include silicon carbide, silicon nitride, ausarium, quartz, microcrystalline powder and glass microspheres. The mass percent of each component in the raw material is 24 parts of silicon carbide, 8 parts of silicon nitride, 45 parts of ausarium, 12 parts of quartz, 6 parts of microcrystalline powder and 5 parts of glass microspheres.

[0028] The preparation method is as follows: the raw materials are mixed evenly, and after being made into a green body through a pressing molding process, a firing process is adopted at a firing temperature of 1450° C. and kept for 3 hours to obtain a microcrystalline material.

[0029] The microcrystalline material is applied to the lining material of the smoke chamber of the cement kiln.

Embodiment 2

[0031] A microcrystalline material for a cement kiln, the raw materials of which include silicon carbide, silicon nitride, ausarium, quartz, microcrystalline powder, and glass microspheres. The mass percent of each component in the raw material is 10 parts of silicon carbide, 2 parts of silicon nitride, 60 parts of ausarium, 20 parts of quartz, 2 parts of microcrystalline powder and 6 parts of glass microspheres.

[0032] The preparation method is as follows: the raw materials are mixed evenly, and after being made into a green body through a pressing molding process, a firing process is adopted at a firing temperature of 1500° C. and kept for 4 hours to obtain a microcrystalline material.

[0033]The microcrystalline material is applied to the lining material of the preheater of the cement kiln.

Embodiment 3

[0035] A microcrystalline material for a cement kiln, the raw materials of which include silicon carbide, silicon nitride, ausarium, quartz, microcrystalline powder, and glass microspheres. The mass percent of each component in the raw material is 40 parts of silicon carbide, 15 parts of silicon nitride, 15 parts of ausarium, 210 parts of quartz, 9 parts of microcrystalline powder, and 1 part of glass microspheres.

[0036] The preparation method is as follows: the raw materials are mixed evenly, and after being made into a green body through a pressing molding process, a firing process is adopted at a firing temperature of 1400° C. and kept for 2 hours to obtain a microcrystalline material.

[0037] The microcrystalline material is applied to the lining material of the feeding pipe of the cement kiln.

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Abstract

A microcrystal material used for a cement kiln is disclosed, belonging to the technical field of inorganic nonmetal material processing. Raw materials include silicon carbide, silicon nitride, a material named as Chinese characters 'Ao sha' by the inventor, quartz, microcrystal powder and glass microbeads. The microcrystal material can change properties of a liner material of a cement kiln systemto avoid adhesion and reaction between the liner material and materials and to avoid firm crust, thus reducing faults of the cement kiln, increasing the service factor of the cement kiln, effectivelyenhancing cement kiln safety and saving the production cost.

Description

technical field [0001] The invention relates to an inorganic non-metallic material, in particular to a microcrystalline material, and belongs to the field of inorganic non-metallic material processing. Background technique [0002] Skinning in the cement kiln system is an unavoidable problem in the cement production industry when the new dry precalcining kiln process is adopted. Harmful ingredients such as alkali, chlorine, and sulfur in the raw materials in the cement clinker production process will be decomposed in the calcination area of ​​the kiln and become steam, which will be brought to the low-temperature area of ​​the preheater by the flue gas to condense on the surface of the material particles and return to the calcination system. This process is called cyclic enrichment of harmful components. Harmful components in the kiln tail preheater of the cement kiln will combine with the material after condensation and precipitation to form a crust containing a low-temper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/00C04B35/565C04B35/622C04B35/66
CPCC04B35/00C04B35/565C04B35/622C04B35/66C04B2235/3418C04B2235/36C04B2235/3826C04B2235/3873C04B2235/656
Inventor 肖晓选韩海东李建宗赵书彬张永利贾利军梁秋旺樊长胜温计格王占英吕暘王丙臣
Owner ZANHUANG JINYU CEMENT
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