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Ceramic inner cylinder hanging piece

A technology of inner cylinder and ceramics, which is applied in the field of ceramic inner cylinder hanging pieces for cement kiln preheaters, which can solve the problems of heat-resistant steel oxidation corrosion, inner cylinder hanging piece wear, short service life, etc., and achieve good high temperature resistance and extended use Effect of improving life and bonding performance

Inactive Publication Date: 2011-12-21
兴化市华伦达铸钢有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under the scouring of high-temperature dusty wind and sand in the preheater, the heat-resistant steel inner tube hanging piece is very severely worn. At the same time, because the preheater is filled with high-temperature alkaline gas, the heat-resistant steel is extremely prone to oxidation and corrosion. , the service life is short; while the inner tube hanging piece made of silicon carbide is wear-resistant and corrosion-resistant, but the cost is high, the production cycle is long, and it is easy to break

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] Weigh the following raw materials: Al 2 o 3 7kg, SiO 2 1.5kg, MgO 2kg, K 2 O 2kg, Zr(SiO 4 ) 8kg; mix the raw materials evenly, add 4kg of water, ball mill for 48 hours, and filter with a mud filter to obtain mud. Put the obtained mud in a vacuum for 20 minutes to homogenize the mud, and the vacuum degree is 0.4 MP; after vacuum homogenization, place it in a vacuum forming machine to form a molded product. Dry the molded product at a temperature of 60°C and a humidity of 45% to obtain a dry green body. After trimming the dried embryo body, the kiln chamber is dried at a temperature of 100°C for 8 hours, then put into the kiln factory to reach 1600°C for 36 hours, kept for 2 hours, cooled to 50°C for 10 hours, and released. Obtain the ceramic inner tube hanging piece of the present invention.

Embodiment 2

[0011] Weigh the following raw materials: Al 2 o 3 17kg, SiO 2 3kg, MgO 2kg, K 2 O 4kg, Zr(SiO 4 ) 10kg; mix the raw materials, add 10kg of water, ball mill for 36 hours, and filter with a mud filter to obtain mud. Put the obtained mud material in a vacuum for 30 minutes to homogenize the mud, and the vacuum degree is 0.2PM; after vacuum homogenization, put it into a vacuum forming machine to form a molded product. Dry the molded product at a temperature of 50°C and a humidity of 55% to obtain a dry green body. After trimming the dried body, dry it in the kiln chamber at a temperature of 100°C for 12 hours, place it in the kiln field for 36 hours to 1700°C for 4 hours, and cool it to 70°C for 10 hours to get out of the furnace. Invented ceramic inner cylinder hanging piece.

Embodiment 3

[0013] Weigh the following raw materials: calcined alumina 7kg, tabular alumina 7kg, kaolin 4.3kg, MgO 4kg, K 2 O 2kg, Zr(SiO 4 ) 6kg; mix the raw materials, add 6kg of water, ball mill for 48 hours, and filter with a mud filter to obtain mud. Put the obtained mud material in a vacuum for 20 minutes to homogenize the mud, and the vacuum degree is 0.3 MP; after vacuum homogenization, it is then formed into a vacuum forming machine to obtain a molded product. Dry the molded product at a temperature of 40°C and a humidity of 60% to obtain a dry green body. After trimming the obtained dry body, dry it in the kiln chamber at a temperature of 150°C for 10 hours, place it in the kiln field for 36 hours to 1600°C and keep it warm for 4 hours, then cool it to 60°C for 10 hours and leave the furnace. Obtain the ceramic inner tube hanging piece of the present invention.

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PUM

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Abstract

The invention discloses a hanging plate of a ceramic inner cylinder. The hanging plate is composed of the following components in parts by weight: 70-85 parts of aluminum oxide, 10-15 parts of silicon dioxide, 1-2 parts of magnesium oxide, Potassium 1-2 parts, zirconium silicate 3-8 parts. The hanging piece of the ceramic inner cylinder of the invention has good high temperature resistance, wear resistance and corrosion resistance.

Description

technical field [0001] The invention specifically relates to a ceramic inner tube hanging piece for a cement kiln preheater. Background technique [0002] At present, the inner tube hanging pieces of the cement kiln preheater are mostly made of heat-resistant steel or silicon carbide. However, under the scouring of high-temperature dusty wind and sand in the preheater, the heat-resistant steel inner tube hanging piece is very severely worn. At the same time, because the preheater is filled with high-temperature alkaline gas, the heat-resistant steel is extremely prone to oxidation and corrosion. , the service life is short; and the inner tube hanging piece made of silicon carbide is wear-resistant and corrosion-resistant, but the cost is high, the production cycle is long, and it is easy to break. Contents of the invention [0003] The purpose of the present invention is to solve the defects in the prior art, and provide a ceramic inner cylinder hanging piece with wear re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D13/00C04B7/43
Inventor 周桂华冯作胜
Owner 兴化市华伦达铸钢有限公司