High-thermoresistance forsterite light material and preparation thereof

A technology of forsterite and lightweight materials, which is applied in the field of composite refractory and thermal insulation materials, can solve the problems of high cost, performance impact, and low degree of industrialization, and achieve low cost, excellent performance, and the effect of reducing thermal pollution

Inactive Publication Date: 2009-07-22
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the cost is higher, the degree of industriali

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A light material of forsterite with high thermal resistance and a preparation method thereof. Firstly, 20-25wt% of sodium chloride powder and 75-80wt% of forsterite raw ore powder are mixed, and 3-7wt% of lignosulfur is added to the mixture Lignosulfonate and calcium lignosulfonate are first dissolved into an aqueous solution and then used as ingredients, stirred for 10-20 minutes, pressed into shape; then dried at 60-110°C for 12-24 hours, at 800-900°C × 5-6 Firing in air under the condition of 1 hour, soaking in water for 24-36 hours after natural cooling; then drying at 60-110°C for 12-24 hours, the high thermal resistance forsterite light material can be obtained.

Embodiment 2

[0014] A light-weight material of forsterite with high thermal resistance and a preparation method thereof, except that the binder is sodium lignosulfonate, the rest are the same as in Example 1.

Embodiment 3

[0016] A light material of forsterite with high thermal resistance and a preparation method thereof. Firstly, 25-30wt% of potassium chloride powder and 70-75wt% of forsterite raw ore powder are mixed, and 7-10wt% of industrial dextrin is added to the above-mentioned mixture The powder is used as a binder. The industrial dextrin powder is firstly dissolved into an aqueous solution and then used for batching, stirred for 15-25 minutes, pressed into shape, and then dried at 60-110°C for 24-36 hours, and then dried at 900-1000°C×4~ Firing in air for 5 hours, soaking in water for 36-48 hours after natural cooling, and then drying at 60-110°C for 24-36 hours, the high thermal resistance forsterite light material can be obtained.

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Abstract

The invention relates to a high-thermal resistance forsterite light material and a preparation method thereof. The technical scheme thereof is as follows: 20 to 60wt percent of chlorate powder and 40 to 80wt percent of forsterite crude ore powder are mixed at first; then a bonding agent accounting for 3 to 10wt percent of the mixture is added, stirred for 5 to 25 minutes, then pressed and shaped; and then the mixture is dried for 12 to 36 hours under the temperature condition of 60 to 110 DEG C or naturally dried for 24 to 48 hours indoors, sintered for 2 to 6 hours at the temperature between 800 and 1400 DEG C, cooled naturally, and soaked by water for 24 to 48 hours, then dried for 12 to 36 hours under the temperature condition of 60 to 110 DEG C or naturally dried for 24 to 48 hours indoors, finally the high-thermal resistance forsterite light material is prepared. The invention is characterized by abundant material resource, low production cost and easy industrial production. The volumetric density of the high-thermal resistance forsterite light material prepared by the method is between 0.8 and 2.0g/cm, with excellent performance as well as long service life; and the invention is applicable for various industrial thermal equipment below the temperature of 1300 DEG C.

Description

technical field [0001] The invention belongs to the technical field of composite refractory and thermal insulation materials. In particular, it relates to a light material of forsterite with high thermal resistance and a preparation method thereof. Background technique [0002] Existing lightweight thermal insulation materials for industrial thermal equipment, especially non-ferrous metal and steel smelting, cement and glass production equipment, such as alumina hollow sphere materials, lightweight high-alumina materials, lightweight forsterite thermal insulation materials, lightweight Clay, diatomaceous earth materials, etc., the heat loss in the production process of these equipment is relatively large, so the heat pollution of these equipment to the surrounding environment is also serious, which not only wastes energy, but also affects the production and operation environment and conditions. Therefore, the research and development of new lightweight insulation materials ...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/20
Inventor 邓承继祝洪喜张少伟白晨
Owner WUHAN UNIV OF SCI & TECH
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