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Compound Sialon-corundum fire brick series and its production process

A technology of composite corundum and refractory bricks, which is applied in ceramic molding machines and manufacturing tools, can solve the problems of difficult large-scale practical application and high production costs, and achieve the effects of excellent corrosion resistance, low production costs, and easy popularization and application

Inactive Publication Date: 2006-08-02
郑州华宇高炉工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sialon combined refractory bricks adopt the method of directly adding pre-made sialon materials into the refractory bricks, which has high production costs and is difficult to obtain large-scale practical applications

Method used

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  • Compound Sialon-corundum fire brick series and its production process
  • Compound Sialon-corundum fire brick series and its production process
  • Compound Sialon-corundum fire brick series and its production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0033] The following is an example to illustrate the production method of Sialon composite corundum series refractory bricks

[0034] Embodiments one to ten take the raw materials according to the weight percentage of each component specified in Table 1, and all produce according to the following methods:

[0035] The weighed raw materials are mixed, pressed and formed, dried and put into the kiln. The firing temperature is 1400°C, kept for 20 hours, and cooled with the furnace to leave the kiln.

[0036] After the product leaves the kiln, inspect its physical and chemical properties, surface quality and external dimensions; process the qualified Sialon composite corundum refractory bricks according to the size standards or contract requirements; then carry out pre-assembly and inspection, and draw the pre-assembly after passing the inspection Diagrams, numbered in layers; assembly diagrams are archived by users and technical departments. Finally, the products are stored in t...

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PUM

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Abstract

The production process of compound sialon-corundum fire brick includes mixing the materials comprising fused corundum of 0.088-5 mm granularity 55-90 wt%, 180-mesh binding clay 2-5 wt%, 240-1000 mesh aluminum powder or active alumina powder 2-10 wt%, 200-500 mesh silicon nitride powder 5-30 wt% and binding agent 1-3 wt%; pressing to form; drying; and sintering in a kiln in nitrogen atmosphere or reducing atmosphere. The compound sialon-corundum fire brick has high heat performance and priority of resisting chemical corrosion of molten iron, slag, alkali, etc, and may be used widely in the work layer in large and middle sized blast furnace to prolong the life of blast furnace and purify molten iron.

Description

1. Technical field: [0001] The invention relates to a refractory material and a production method thereof, in particular to a sialon composite corundum series refractory brick and a production method thereof. 2. Background technology: [0002] Since the blast furnace adopts carbon brick-ceramic masonry composite lining, the service life of the furnace bottom and hearth lining has been significantly improved compared with the past, and it has the effect of saving energy and reducing consumption. With the continuous improvement of the blast furnace lining structure, carbonaceous materials and ceramic masonry materials, some blast furnaces using this carbon brick-ceramic masonry composite lining have reached a service life of more than ten years. However, with the continuous improvement of blast furnace smelting intensity, iron and steel complexes need a longer lifetime of blast furnace generation. The ceramic materials currently used in the carbon brick-ceramic masonry compos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/10C04B35/622C04B35/64B28B3/00
Inventor 白继周聂桂秋白建伟王培茹
Owner 郑州华宇高炉工程技术有限公司
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