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Ceramic fiber back lining board

A ceramic fiber and backing board technology, which is applied in the field of refractory ceramic fiber materials, can solve problems such as loss of strength, powdering of calcium silicate boards, and high material brittleness, and achieve improved heat resistance, reduced production costs, and high strength Effect

Active Publication Date: 2005-03-23
LUYANG ENERGY SAVING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are some fiber-reinforced composite thermal insulation boards, the use temperature is in the range of 600 ° C to 1000 ° C, but because they are not based on fibers, these materials are brittle and easy to powder when used, for example: calcium silicate board In the process of transportation and use, it is brittle and easy to be damaged, and the calcium silicate board is pulverized due to high temperature burning during use, thus losing its strength

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add 50 parts of aluminum silicate fiber, 4 parts of polyvinyl alcohol fiber, 6 parts of mineral wool, 3 parts of expanded perlite, 5 parts of clay, 3 parts of starch, 0.2 part of polyacrylamide, and 0.01 part of polyaluminum chloride to make pulp pulping machine, the fiber length after pulping is 3mm, then add appropriate proportion of water to keep the slurry concentration at 2.5%, and then use vacuum forming equipment to form, the size is 900×600×50, after forming The product is sent into the drying chamber for drying, and finally realizes the present invention through cutting and polishing. Product chemical composition of the present invention is as follows: Al 2 o 3 : 25%; SiO 2 : 59%; organic matter: 12%; Fe 2 o 3 +CaO+MgO+K 2 O+Na 2 O: 4%, the product volume density is 280Kg / m 3 , heating permanent line shrinkage (800℃×24h) is 1.8%; cold compressive strength is 0.23MPa; thermal conductivity (hot surface temperature 600℃) is 0.122W / m.k.

Embodiment 2

[0024] Add 60 parts of aluminum silicate fiber, 5 parts of rock wool, 10 parts of expanded perlite, 5 parts of clay, 5 parts of starch, 0.15 part of polyacrylamide, and 0.05 part of polyaluminum chloride into the pulping machine for pulping. The fiber length after completion is 2mm, and then add an appropriate proportion of water to keep the slurry concentration at 3%, and then use the pick-up equipment for molding, the size is 900×600×50, after the molding is completed, the product is sent to the drying room for drying Dry, finally realize the present invention by cutting, polishing. Product chemical composition of the present invention is as follows: Al 2 o 3 : 29%; SiO 2 : 60%; organic matter: 8%; Fe 2 o 3 +CaO+MgO+K 2 O+Na 2 O: 3%, the product volume density is 280Kg / m 3 , heating permanent linear shrinkage (800 ℃ × 24h) is 1.6%; cold compressive strength is 0.24MPa; thermal conductivity (hot surface temperature 600 ℃) is 0.121W / m.k.

Embodiment 3

[0026] Add 65 parts of aluminum silicate fiber, 4.5 parts of polyvinyl alcohol fiber, 20 parts of rock wool, 5 parts of expanded perlite, 5 parts of clay, 5 parts of starch, 0.6 part of polyacrylamide, and 0.2 part of polyaluminum chloride to make pulp pulping machine, the fiber length after pulping is 3mm, then add appropriate proportion of water to keep the slurry concentration at 2.5%, and then use vacuum forming equipment to form, the size is 900×600×50, after forming The product is sent into the drying chamber for drying, and finally realizes the present invention through cutting and polishing. Product chemical composition of the present invention is as follows: Al 2 o 3 : 38%; SiO 2 : 54%; organic matter: 3%; Fe 2 o 3 +CaO+MgO+K 2 O+Na 2 O: 5%, the product volume density is 280Kg / m 3 , heating permanent line shrinkage (800 ℃ × 24h) is 1.8%; cold compressive strength is 0.25MPa; thermal conductivity (hot surface temperature 600 ℃) is 0.12W / m.k.

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Abstract

A backing ceramic-fibre board as refractory is prepared from aluminium silicate fibre, organic fibre, mineral wool, expanded pearlite, clay, starch, polyacrylamide, and polymerized aluminium chloride through proportional mixing, preparing paste, shaping, drying and post-processing.

Description

technical field [0001] The invention belongs to the class of refractory ceramic fiber materials, in particular to a ceramic fiber backing board. Background technique [0002] Traditional thermal insulation inorganic fiber boards mainly include glass wool boards, rock wool insulation boards, slag wool insulation boards, mineral wool insulation decorative acoustic ceilings, asbestos boards, aluminum silicate fiber boards and mixed fiber boards. [0003] The use temperature of traditional thermal insulation inorganic fiber boards is either below 600°C, such as glass wool boards, rock wool insulation boards, slag wool insulation boards, mineral wool insulation decorative sound-absorbing ceilings, asbestos boards; Acid aluminum fiberboard and mixed fiberboard; at present, there is no thermal insulation fiberboard with a temperature of 600 ℃ ~ 1000 ℃. Although there are some fiber-reinforced composite thermal insulation boards, the use temperature is in the range of 600 ° C to 10...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B14/18C04B14/38C04B14/46C04B16/06C04B22/12C04B24/10C04B24/14C04B24/24
Inventor 鹿成洪刘超李京友
Owner LUYANG ENERGY SAVING MATERIALS CO LTD
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