A kind of thermal insulation coating and its preparation method and thermal insulation coating

A technology of thermal insulation coating and thermal insulation coating, which is applied in the field of thermal insulation coating, thermal insulation coating and its preparation, can solve the problems of destroying the overall structure of furnace lining, crystallization, pulverization, slag removal, and shortening the service life of high temperature resistant furnace, etc. The effect of low thermal conductivity, prolonging service life and improving performance

Active Publication Date: 2022-07-08
山东鲁阳浩特高技术纤维有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the thermal insulation effect of these furnace linings is relatively good, under the action of harsh atmosphere, wind speed, slag erosion and thermal shock, after a certain period of use, it will crystallize, pulverize, and slag fall, thereby destroying the overall structure of the furnace lining. Resulting in a reduction in the service life of the high temperature resistant furnace

Method used

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  • A kind of thermal insulation coating and its preparation method and thermal insulation coating
  • A kind of thermal insulation coating and its preparation method and thermal insulation coating
  • A kind of thermal insulation coating and its preparation method and thermal insulation coating

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preparation example Construction

[0039] The present invention also provides a preparation method of the thermal insulation coating described in the above technical solution, comprising the following steps:

[0040] Inorganic fibers, organic fibers, low thermal conductivity fillers, refractory fillers, binders and water are mixed to obtain thermal insulation coatings.

[0041] In the preparation method provided by the present invention, the thermal insulation coating provided by the present invention can be obtained by directly mixing inorganic fibers, organic fibers, low thermal conductivity fillers, refractory fillers, binders and water uniformly in proportion.

[0042] The thermal insulation coating and the preparation method thereof provided by the present invention significantly improve the use performance of the coating in a high temperature environment by optimizing the design of the components of the thermal insulation coating, especially selecting specific inorganic fibers, organic fibers and fillers; ...

Embodiment 1

[0073] Quality composition of thermal insulation coating: 15% aluminum silicate fiber, 1% pulp fiber, 20% hollow glass beads, 7% kaolin, 20% silica sol, 2% cellulose, 35% tap water; mix the above raw materials in proportion Evenly, the thermal insulation coating is obtained.

[0074] The thermal insulation coating prepared in this example is detected, and the results are as follows: wet bulk density 1100kg / m 3 ;The bulk density after drying at room temperature is 500kg / m 3 ; Compressive strength 1.25MPa; heating wire shrinkage (1000℃×24h) 1.83%; thermal conductivity, hot surface 200℃ is 0.79W / m.k, hot surface 600℃ is 0.114W / m.k, hot surface 800℃ is 0.132W / m.k, the hot surface is 0.152W / m.k at 1000℃.

Embodiment 2

[0076] Quality composition of thermal insulation coating: calcium magnesium silicate fiber 10%, pulp fiber 1.5%, float 15%, Zhangzhou mud 15%, silica sol 25%, cellulose 1.5%, tap water 32%; mix the above raw materials in proportion Evenly, the thermal insulation coating is obtained.

[0077] The thermal insulation coating prepared in this example is detected, and the results are as follows: wet bulk density 1150kg / m 3 ;The bulk density after drying at room temperature is 550kg / m 3 ; Compressive strength 1.6MPa; heating wire shrinkage (1000℃×24h) 1.7%; thermal conductivity, hot surface 200℃ is 0.76W / m.k, hot surface 600℃ is 0.115W / m.k, hot surface 800℃ is 0.135W / m.k, the hot surface is 0.151W / m.k at 1000℃.

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Abstract

The invention belongs to the field of thermal insulation materials, and in particular relates to a thermal insulation coating, a preparation method thereof, and a thermal insulation coating. The thermal insulation coating provided by the invention comprises: inorganic fibers 5-30%; organic fibers 0.5-5%; low thermal conductivity fillers 10-30%; refractory fillers 2-20%; binders 15-35%; water 20-40% %; the inorganic fibers are selected from rock wool fibers, aluminum silicate fibers, and calcium magnesium silicate fibers; the organic fibers are pulp fibers; the low thermal conductivity fillers are selected from perlite powder, expanded vermiculite powder, floating beads, hollow glass microfibers beads; the refractory fillers are selected from kaolin and / or Zhangzhou mud. By optimizing the design of the composition of the thermal insulation coating, especially selecting specific inorganic fibers, organic fibers and fillers, the invention significantly improves the use performance of the coating in a high temperature environment; , The formed coating has low thermal conductivity, high strength and no cracking at high temperature.

Description

technical field [0001] The invention belongs to the field of thermal insulation materials, and in particular relates to a thermal insulation coating, a preparation method thereof, and a thermal insulation coating. Background technique [0002] At present, fiber linings with high temperature resistance and low thermal conductivity are mostly used in all high temperature resistant furnaces such as iron and steel metallurgical furnaces, heavy non-ferrous metal metallurgical furnaces, chemical industry furnaces, and industrial calcining furnaces. Although the thermal insulation effect of these furnace linings is relatively good, under the action of harsh atmosphere, wind speed, slag corrosion and thermal shock, after a certain period of use, crystallization, pulverization, and slag removal will occur, thereby destroying the overall structure of the furnace lining. Lead to a reduction in the service life of the high temperature furnace. [0003] In order to solve the above probl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/26C04B111/40
CPCC04B28/26C04B2111/00508C04B2111/40C04B2201/20C04B2201/32C04B2201/50C04B14/4656C04B18/241C04B14/22C04B14/106C04B24/383C04B14/4643C04B18/08C04B14/10C04B24/38C04B14/46C04B14/18
Inventor 许妹华郑维金岳耀辉李桂娟鹿明
Owner 山东鲁阳浩特高技术纤维有限公司
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