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Composite heat insulating material of vermiculite and method of application thereof

A technology of thermal insulation material and vermiculite, which is applied in the field of composite vermiculite thermal insulation materials, can solve the problems of low vermiculite strength and refractory service temperature, and achieve good economic and social benefits, good energy saving effect and good strength Effect

Inactive Publication Date: 2006-10-11
郑州祥通耐火陶瓷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above situation, the purpose of the present invention is to provide a composite vermiculite heat insulation material and its use method, which can effectively solve the problems of the strength, refractoriness and low service temperature of vermiculite in use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Use expanded vermiculite particles of 0.1 to 2.0 mm in size as the main raw material, and carry out compounding in the following steps: ① Semi-dry material preparation: the ingredients are expressed in weight percentages, mixed with 80% of expanded vermiculite and 20% of water repellent and stirred for 10 to 15 minutes , to make expanded vermiculite semi-dry material; ②Then use expanded vermiculite semi-dry material to make primary ball material, the ingredients are calculated by weight percentage, mix 70% of expanded vermiculite semi-dry material with 30% of high alumina filler Homogenize the mixture, then add 10% of the weight of the mixture organic binder, mix it with a ball press machine and press it into a ball with a particle size of 0.3-3.5mm, dry and solidify at a temperature of 70-100°C, and the moisture content is <1 %; ③Reuse the primary ball material to make the secondary ball material. 15% aluminum sol, mixed evenly, compressed into balls with a particle si...

Embodiment 2

[0016] Use expanded vermiculite particles of 0.1-2.0mm as the main raw material, and carry out compounding in the following steps: ①Semi-dry material preparation: the ingredients are expressed in weight percentages, mixed with 85% expanded vermiculite and 15% water-repellent agent and stirred for 10-15 minutes , made of expanded vermiculite semi-dry material. ②Use the expanded vermiculite semi-dry material to make a ball material again, and the ingredients are calculated by weight percentage. Mix 65% of the expanded vermiculite semi-dry material and 35% of the high-alumina filler to form a mixture, and then add it into the mixture 12% of the weight of the organic binder, mixed and pressed into balls with a particle size of 0.3 to 3.5mm, dried and solidified at a temperature of 70 to 100°C, and the moisture content was less than 1%; Make the secondary spherical material, its batching is calculated by weight percentage, primary spherical material 70% and aluminum-magnesium fille...

Embodiment 3

[0018] In terms of weight percentage, 85% of composite vermiculite heat insulation material and 15% of aluminum sol can be used to make profiles.

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Abstract

The invention relates to a thermal insulation material, in particular to a composite vermiculite thermal insulation material and its application method. In the present invention, expanded vermiculite whose particle size is 0.1-0.2 mm is used as the main raw material to mix with water-repellent agent to make a semi-dry material, and the semi-dry material is mixed with a high-aluminum filler, then an organic binder is added to mix evenly, and pressed into a Primary pellets, mixed with aluminum-magnesium fillers, then added aluminum sol, pressed into secondary pellets, crushed to 0.5-5.0mm, and then a composite vermiculite insulation material, which is mixed with aluminum sol It can be made into profiles, and can be made into castables and spray coatings by adding a coagulant. The invention has high refractoriness and service temperature, good strength and thermal stability, and is an excellent thermal insulation material for high-temperature kilns.

Description

(1) Technical field [0001] The invention relates to a thermal insulation material, in particular to a composite vermiculite thermal insulation material and its application method. (two), background technology [0002] Vermiculite is a layered silicate mineral, which expands into expanded vermiculite after roasting. Due to its small specific gravity and small thermal conductivity, it has good heat insulation performance, but its low strength and poor fire resistance affect its use effect. For this reason, people have developed various vermiculite heat insulation materials by using different binders, so that they are widely used in industrial production. Press 1992.9) has a more detailed description. These heat insulation materials play a very good role in saving energy and reducing consumption of the kiln. However, their use temperature is not high, usually 600-800°C, the maximum use temperature is 1000°C, and their strength is not high, which cannot meet the use requireme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B14/20
Inventor 孟智敏靳亲国周秋芳孟冠羽
Owner 郑州祥通耐火陶瓷有限公司