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Forsterite fireproof castable

A refractory castable and forsterite technology, applied in the field of refractory materials, can solve the problems of single development and application, fine powder entering the river, and low added value of products, so as to reduce resource waste, good resistance to slag erosion, and good thermal shock resistance The effect of the high temperature performance of the

Inactive Publication Date: 2012-08-01
宜兴新威利成耐火材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country is rich in forsterite resources, but its development and application is relatively simple. The amount of forsterite in the steel and foundry industries accounts for more than 90%, but the particle size requirements are strict, and only coarse and medium particle sizes are required, making small particle size and fine powder resources All backlogs; in production, due to the fragility of forsterite, its fine powder accounts for more than 1 / 3 of the total, which wastes a lot of resources, and the fine powder produced by the wet production line enters the river, seriously polluting the environment
Therefore, it is of great significance to study how to fully and efficiently utilize forsterite resources to solve the problems of narrow application, low added value of products and environmental pollution.

Method used

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  • Forsterite fireproof castable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 11.88 kg of forsterite with a particle size of 5-3mm, 19.8 kg of forsterite with a particle size of 3-1mm, 15.84 kg of forsterite with a particle size of 1-0mm, and 18.48 kg of forsterite with a particle size≦0.088mm, lightly burned 12 kg of magnesia, 10 kg of forsterite fine powder, 5 kg of silicon dioxide micropowder binder, 6.8 kg of zircon sand powder, and 0.2 kg of sodium hexametaphosphate, mixed evenly to form 100 kg of refractory castable bulk. Add appropriate amount of water to the refractory castable bulk material and stir it evenly, cast it in a triple mold of 40×40×160mm, demould after natural curing for 24 hours, then dry at 110°C for 24 hours, and finally dry it at 1400°C-1500°C Incubate at ℃ for 2-3 hours to prepare samples. Test the performance of the sample after cooling, the results are shown in the attached table.

Embodiment 2

[0027] 12.73 kg of forsterite with a particle size of 5-3mm, 19.43 kg of forsterite with a particle size of 3-1mm, 15.41 kg of forsterite with a particle size of 1-0mm, and 19.43 kg of forsterite with a particle size≦0.088mm, lightly burned 11 kg of magnesia, 9.8 kg of forsterite fine powder, 6 kg of silicon dioxide micropowder binder, 6 kg of silicon carbide, and 0.2 kg of sodium hexametaphosphate are mixed evenly to form 100 kg of refractory castable bulk. Add appropriate amount of water to the refractory castable bulk material and stir it evenly, cast it in a triple mold of 40×40×160mm, demould after natural curing for 24 hours, then dry at 110°C for 24 hours, and finally dry it at 1400°C-1500°C Incubate at ℃ for 2-3 hours to prepare samples. Test the performance of the sample after cooling, the results are shown in the attached table.

Embodiment 3

[0029] 13.6 kg of forsterite with a particle size of 5-3mm, 19.04 kg of forsterite with a particle size of 3-1mm, 14.96 kg of forsterite with a particle size of 1-0mm, and 20.4 kg of forsterite with a particle size≦0.088mm, lightly burned 11 kg of magnesia, 8 kg of forsterite fine powder, 6 kg of silicon dioxide micropowder binder, 6.8 kg of zircon sand powder, and 0.2 kg of sodium tripolyphosphate, mixed evenly to form 100 kg of refractory castable bulk. Add appropriate amount of water to the refractory castable bulk material and stir it evenly, cast it in a triple mold of 40×40×160mm, demould after natural curing for 24 hours, then dry at 110°C for 24 hours, and finally dry it at 1400°C-1500°C Incubate at ℃ for 2-3 hours to prepare samples. Test the performance of the sample after cooling, the results are shown in the attached table.

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Abstract

The invention relates to a forsterite fireproof castable which is characterized by comprising the following components in percentage by weight: 65 to 70 percent of forsterite granular aggregate, 10 to 12 percent of undercalcined magnesia, 8 to 10 percent of forsterite fine powder, 4 to 6 percent of silica micro powder combination agent, 5 to 7 percent of additive and 0.1 to 0.3 percent of water reducing agent. The small-granularity forsterite and forsterite fine powder are used as raw materials of the fireproof castable; the forsterite resources are used fully, so that resource waste is reduced, and environment pollution is reduced; furthermore, the cost of the fireproof castable is reduced, the preparation working procedure is simple, and the fireproof castable is convenient to construct; moreover, the fireproof castable has the advantages of relatively high usability, high slag erosion resistance and thermal shock resistance high-temperature performance, and can be widely applied to smelting industries.

Description

technical field [0001] The invention relates to a refractory material, in particular to a forsterite refractory castable, which fully utilizes forsterite resources and reduces waste of resources. Background technique [0002] As a kind of unshaped refractory material, refractory castables do not need to be formed, dried and fired before use, which is beneficial to energy saving and emission reduction, and the production process is simple, easy to construct, and the integrity and airtightness of the furnace lining are good, which can be mechanized construction. Easy to repair and other advantages. At present, high-alumina bauxite resources, which are widely used as refractory materials, are becoming increasingly scarce, and it is imminent to research, develop and utilize alkaline refractory materials to replace aluminum-silicon refractory materials. Forsterite is an alkaline refractory material. Due to its good properties, it is widely used in foundry sand, metallurgical aux...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 钱元英袁雪峰周彦文
Owner 宜兴新威利成耐火材料有限公司
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