Silicon dioxide thermal insulation composite material and preparation method and application thereof

A composite material, silicon dioxide technology, applied in the field of silicon dioxide thermal insulation composite materials, can solve the problem of large heat loss in coke ovens, achieve the effects of reducing the temperature of the outer wall of the furnace, reducing the weight of equipment, and improving the operating environment of workers

Inactive Publication Date: 2020-02-07
北京中环鑫汇科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention is to provide a silica thermal insulation composite material to solve the problem of large heat loss in coke ovens in the prior art;

Method used

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  • Silicon dioxide thermal insulation composite material and preparation method and application thereof
  • Silicon dioxide thermal insulation composite material and preparation method and application thereof
  • Silicon dioxide thermal insulation composite material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The silica thermal insulation composite material described in this embodiment includes the following raw material components:

[0031]

[0032]

[0033] The preparation method of the silica thermal insulation composite material described in this embodiment comprises the following steps:

[0034] (1) get the nano-SiO according to the selected ratio 2 Powder, fiber material, binder, additive and rare earth compound are mixed and mixed at high speed;

[0035] (2) Compress the obtained mixture at normal temperature and under a pressure of 1.581MPa-5.5MPa, and then fix and mold it with aluminum foil paper after pressing, and then dry it to obtain the desired thermal insulation composite material.

Embodiment 2

[0037] The silica thermal insulation composite material described in this embodiment includes the following raw material components:

[0038]

[0039] The preparation method of the silica thermal insulation composite material described in this embodiment comprises the following steps:

[0040] (1) get the nano-SiO according to the selected ratio 2 Powder, fiber material, binder, additive and rare earth compound are mixed and mixed at high speed;

[0041] (2) Compress the obtained mixture at normal temperature and under a pressure of 1.581MPa-5.5MPa, and then fix and mold it with aluminum foil paper after pressing, and then dry it to obtain the desired thermal insulation composite material.

Embodiment 3

[0043] The silica thermal insulation composite material described in this embodiment includes the following raw material components:

[0044]

[0045]

[0046] The preparation method of the silica thermal insulation composite material described in this embodiment comprises the following steps:

[0047] (1) get the nano-SiO according to the selected ratio 2 Powder, fiber material, binder, additive and rare earth compound are mixed and mixed at high speed;

[0048] (2) Compress the obtained mixture at normal temperature and under a pressure of 1.581MPa-5.5MPa, and after the compression, use aluminum foil to fix and mold it off-line, and dry it to obtain the desired thermal insulation composite material.

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Abstract

The invention belongs to the technical field of thermal insulation composite materials, particularly relates to a silicon dioxide thermal insulation composite material, and further discloses a preparation method and application thereof. According to the silicon dioxide thermal insulation composite material, nanoscale superfine silicon dioxide and the like are used as main raw materials, and properrare earth elements and additives are used as auxiliary materials, so that the thermal insulation composite material with a microporous structure is prepared. The composite material is based on a unique superfine pore structure and an infrared scattering principle, heat transfer can be reduced on three heat transfer mechanisms such as heat conduction, heat radiation and heat convection, and the purpose of heat insulation is achieved. The invention relates to the thermal insulation composite material with high temperature resistance and ultralow heat conductivity coefficient. The high-strengthplate product and the thermal insulation composite material are compounded according to a proper proportion to obtain the novel thermal insulation material with high temperature resistance, high strength and low thermal conductivity, and the application requirements of energy conservation and light weight of thermal devices such as coke oven tops and industrial high-temperature kilns can be met.

Description

technical field [0001] The invention belongs to the technical field of thermal insulation composite materials, in particular relates to a silica thermal insulation composite material, and further discloses its preparation method and application. Background technique [0002] Coke is a final product made from bituminous coal heated to 950-1050°C in the absence of air and then dried, pyrolyzed, melted, bonded, solidified, and shrunk. The coke obtained by high-temperature coking can be used in blast furnace smelting, casting and gasification, and the recovered and purified coke oven gas produced in the coking process is a fuel with high calorific value and an important industrial raw material for organic synthesis. [0003] According to reports, China's coke output in 2018 was about 440 million yuan, and a total of about 880 coke ovens were in use. According to reports, the heat loss of general industrial boilers, kilns and coke ovens is composed of five parts, namely heat los...

Claims

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Application Information

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IPC IPC(8): C04B28/34
CPCC04B28/344C04B2111/00008C04B2201/20C04B2201/32C04B2201/50C04B14/06C04B14/46C04B14/4656C04B14/30
Inventor 魏晶何新平段斌文胡鹏崔晓军刘东路文郝明海
Owner 北京中环鑫汇科技有限公司
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