Thermal insulation coating, preparation method thereof and thermal insulation coating layer

A technology of thermal insulation coating and content, applied in the fields of thermal insulation coating, thermal insulation coating and its preparation, can solve the problems of destroying the overall structure of the furnace lining, crystallization, pulverization, slag removal, and shortening the service life of high temperature resistant furnaces.

Active Publication Date: 2021-03-02
山东鲁阳浩特高技术纤维有限公司
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  • Summary
  • 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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  • Thermal insulation coating, preparation method thereof and thermal insulation coating layer
  • Thermal insulation coating, preparation method thereof and thermal insulation coating layer
  • Thermal insulation coating, preparation method thereof and thermal insulation coating layer

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preparation example Construction

[0039] The present invention also provides a method for preparing 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 the inorganic fibers, organic fibers, low thermal conductivity fillers, refractory fillers, binders and water in proportion.

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

Embodiment 1

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

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

Embodiment 2

[0076] The mass composition of thermal insulation coatings: calcium magnesium silicate fiber 10%, pulp fiber 1.5%, floating beads 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 can be obtained.

[0077] The thermal insulation coating prepared in this embodiment 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, the hot surface is 0.76W / m.k at 200℃, 0.115W / m.k at 600℃, and 0.135W / m.k at 800℃ m.k, hot surface 1000 ℃ is 0.151W / m.k.

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Abstract

The invention belongs to the field of thermal insulation materials, and particularly relates to a thermal insulation coating, a preparation method thereof and a thermal insulation coating layer. The thermal insulation coating provided by the invention comprises the following components: 5-30% of inorganic fiber; 0.5-5% of organic fiber; 10-30% of a low-thermal-conductivity filler; 2-20% of a fire-resistant filler; 15-35% of a binding agent; and 20-40% of water. The inorganic fibers are selected from rock wool fibers, aluminum silicate fibers and calcium magnesium silicate fibers; the organic fibers are paper pulp fibers; the low-thermal-conductivity filler is selected from perlite powder, expanded vermiculite powder, floating beads and hollow glass beads; and the fire-resistant filler is selected from kaolin and / or Zhangzhou mud. The components of the thermal insulation coating are optimally designed, and particularly the specific inorganic fibers, organic fibers and filler are selected, so that the use performance of the coating in a high-temperature environment is remarkably improved; and after the surface of a kiln lining is coated with the thermal insulation coating, a formed coating is low in heat conductivity coefficient, high in strength and free of 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 calcination furnaces. 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. [0003] In order to solve the above probl...

Claims

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Application Information

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Patent Type & Authority Applications(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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