High-strength white olivine light material and method of producing the same

A technology for forsterite and light materials, applied in the direction of magnesium silicate, silicate, etc., can solve the problems of high cost, low degree of industrialization, performance impact, etc., and achieves low production cost, reduced heat pollution, and excellent performance. Effect

Inactive Publication Date: 2009-07-29
WUHAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the cost is higher, the degree of industrialization is not high, and its performance is also affected

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A high-strength forsterite light material and a preparation method thereof, comprising first mixing 20-25wt% of sodium carbonate and 75-80wt% of talc raw ore powder, and adding 3-7wt% of calcium lignosulfonate binder to the mixture , the binder is melted into an aqueous solution and then used for ingredients, stirred for 10-20 minutes, and pressed into shape; then dried at 60-110°C for 12-24 hours, and then placed in air at 800-900°C for 5-6 hours Firing, cooling naturally, soaking in water for 24-36 hours; finally drying at 60-110°C for 12-24 hours to obtain a high-strength forsterite light material.

Embodiment 2

[0014] A high-strength forsterite light material and a preparation method thereof are the same as in Example 1 except that the binder is sodium lignosulfonate.

Embodiment 3

[0016] A high-strength forsterite light material and a preparation method thereof, comprising first mixing 25-30wt% of potassium carbonate and 70-75wt% of talc raw ore powder, adding 7-10wt% of industrial dextrin powder to the above mixture, and industrial paste The fine powder is melted into an aqueous solution and then used for batching, stirred for 15-25 minutes, and pressed into shape; then dried at 60-110°C for 24-36 hours, and then burned in air at 900-1000°C for 4-5 hours After natural cooling, soak in water for 36-48 hours; finally dry at 60-110°C for 24-36 hours to obtain a high-strength forsterite lightweight material.

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Abstract

The invention relates to a high-strength forsterite lightweight material and a preparation method thereof. The invention adopts a technical proposal that carbonate powder accounting for 20 to 70 percent of the total weight and talc raw-ore powder accounting for 30 to 80 percent of the total weight are mixed and then added with a bonding agent accounting for 3 to 10 percent of the weight of a mixture of the carbonate powder and the talc raw-ore powder, and the mixture of the three materials is stirred for 5 to 25 minutes, pressed, molded, dried for 12 to 36 hours at a temperature of between 60 and 110 DEG C or naturally dried indoors for 24 to 48 hours, sintered in air for 2 to 6 hours at a temperature of between 800 and 1,400 DEG C, naturally cooled, soaked in water for 24 to 48 hours and finally dried for 12 to 36 hours at a temperature of between 60 and 110 DEG C or naturally dried indoors for 24 to 48 hours, so that the high-strength forsterite lightweight material can be obtained. The preparation method has the characteristics of extensive raw material sources, low production cost and easiness for industrial production. The material prepared by the method has the advantages of excellent performances, compressive strength of between 10 and 40 MPa, volume density of between 0.6 and 1.5 g / cm, long life span, service temperature at 1,200 DEG C and benefit to energy conservation and consumption reduction.

Description

technical field [0001] The invention belongs to the technical field of refractory and thermal insulation materials. In particular, it relates to a high-strength forsterite light material 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 with high strength, low bulk...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C01B33/22C04B35/20
Inventor 邓承继祝洪喜张少伟白晨
Owner WUHAN UNIV OF SCI & TECH
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