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Composite heat insulating material of vermiculite and method of application thereof

A thermal insulation material, vermiculite technology, applied in the field of composite vermiculite thermal insulation materials, can solve the problems of vermiculite strength, refractoriness and low operating temperature, achieve good economic and social benefits, low thermal conductivity, high operating temperature Effect

Inactive Publication Date: 2005-10-26
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 and particles of 0.1 to 2.0mm as the main raw materials, and carry out compounding with the following steps: ①Semi-dry material preparation: the ingredients are calculated by weight percentage, mixed with 80% of expanded vermiculite and 20% of water repellent and stirred for 10~ In 15 minutes, the semi-dry material of expanded vermiculite was made; 2. The semi-dry material of expanded vermiculite was used to make a ball material again, and the ingredients were expressed in percentage by weight, with 70% of semi-dry material of expanded vermiculite and 30% of high-alumina filler. % mixed into a mixture, and then add 10% of the weight of the mixture of organic binder, mixed with a ball press to press into a ball with a particle size of 0.3 ~ 3.5mm, dried and solidified at a temperature of 70 ~ 100 ° C, the moisture content <1%; ③Use the primary ball material again to make the secondary ball material. Mix 5-15% inorganic sol, press it into balls wi...

Embodiment 2

[0016] Use expanded vermiculite and particles of 0.1 to 2.0 mm as the main raw materials, and carry out compounding with the following steps: ①Semi-dry material preparation: the ingredients are calculated by weight percentage, mixed with 85% expanded vermiculite and 15% water repellent and stirred for 10~ 15 minutes to make 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 f...

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 present invention relates to a heat-insulating material, ni particular, it is a composite vermiculite heat-insulating material and its application method. Its preparation method includes the following steps: using expanded vermiculite whose grain size is 0.1-2.0 mm as main raw material, mixing it with hydrophobic agent to obtain semi-dry material, then mixing said semi-dry material with high alumina filling material, adding organic binding agent, uniformly mixing them and pressing them into first spherical material, then fully mixing the first spherical material with aluminium-magnesium filling material, and adding inorganic binding agent, pressing them into secondary spherical material, breaking to 0.5-5.0 mm so as to obtain the invented composite vermiculite heat-insulating material.

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 requirem...

Claims

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Application Information

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Patent Type & Authority Applications(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