Method for manufacturing high-strength and energy-saving xonotlite heat-insulation product

A technology of tobermorite and its manufacturing method, which is applied in chemical instruments and methods, layered products, layered products of hydraulic substances, etc. kiln, shutdown and other problems, to achieve the effect of enhancing the thermal insulation effect, good thermal insulation effect, and ensuring consistency

Inactive Publication Date: 2014-07-30
莱州明发隔热材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing calcium silicate heat insulation board and aluminum silicate fiber board are difficult to meet the requirements of mechanical strength, which can easily cause partial collapse and shedding of the kiln, resulting in shutdown of the kiln and production, which have a great impact on the safety of production and cost-effectiveness of the enterprise

Method used

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  • Method for manufacturing high-strength and energy-saving xonotlite heat-insulation product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Add quicklime to 5 times the weight of 75°C water, stir and digest, sieve and remove the slag, and obtain lime milk with a solid content of 23% as a calcium raw material.

[0034] (2) Mix quartz powder and milk of lime according to the ratio of dry material weight 46.3:53.7. At this time, the molar ratio of Ca / Si is 0.90, mix evenly, and use it as the base material.

[0035] (3) Add evenly to the above base material: ① Bamboo pulp with a dry weight of 6% of the base material, and the bamboo pulp needs to be beaten with water in advance, ② Alkali-resistant glass fiber with a dry weight of 6% of the base material, ③ Base material Wollastonite powder with a dry weight of 30%, ④ a dynamic hydrothermally synthesized xonotlite slurry with a dry weight of 80% of the base material. Mix evenly to form a molding slurry. Prepared molding slurry solids content is 12%.

[0036] (4) Pour the above-mentioned molding slurry into the mold with small holes on the upper and lower si...

Embodiment 2

[0041] On the basis of the board obtained in Example 1, 810 glue is evenly coated on the outside, and a layer of paper-coated aluminum foil is covered. After the glue is cured, the aluminum foil-coated high-strength and energy-saving xonotlite thermal insulation product is obtained. The properties of the plates are shown in Table 1.

Embodiment 3

[0043] (1) Mix quartz powder and calcium carbide slag powder according to the ratio of dry material weight 41.4:58.6 in water with 2.5 times the weight of dry material. At this time, the molar ratio of Ca / Si is 1.10, mix evenly, and use it as the base material.

[0044] (2) Add evenly to the above base material: ① 2% pulp and 1% cotton linters by dry base material weight, 2% alkali-resistant glass fiber by 2% dry base material weight, ③ dry base material weight 10% wollastonite powder, ④ 20% mica by weight of dry base material, ⑤ dynamic hydrothermally synthesized xonotlite slurry by 10% by weight of dry base material. Mix evenly to form a molding slurry. Prepared molding slurry solids content is 24%.

[0045] (3) Pour the above-mentioned molding slurry into the mold with small holes on the upper and lower sides, and press the set density of 800 kg / m 3 Pressed and formed into a slab.

[0046] (4) Put the above-mentioned slab into a static autoclave, pass steam, and maintain...

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Abstract

The invention discloses a method for manufacturing a high-strength and energy-saving xonotlite heat-insulation product. On the basis of a high-density plate production process based on a static method, xonotlite slurry synthesized by using a dynamic hydrothermal method is added to reduce the density of a plate so as to obtain the high-strength and energy-saving xonotlite heat-insulation product with moderate density and relatively high strength. Meanwhile, a layer of aluminum foil is coated to ensure that the product has water resistance, the heat insulation effect of materials is enhanced, and the condition of the product is optimized.

Description

technical field [0001] The invention relates to a manufacturing method of a xonotlite thermal insulation product used as an energy-saving thermal insulation material for industrial kilns and civil buildings. Background technique [0002] The thermal insulation materials used in the cement industry are mainly calcium silicate thermal insulation products. The density of calcium silicate insulation board is generally 170~270 kg / m 3 , the maximum operating temperature is 1000°C, and the compressive strength is generally below 1.0 MPa. [0003] A small amount of ordinary aluminum silicate fiberboard is used as thermal insulation materials in the cement industry, and its density is generally 200~300 kg / m 3 , the maximum use temperature is divided into 900 ° C and 1000 ° C according to the composition, and the compressive strength is generally below 0.5 MPa. Their function and price are equivalent to calcium silicate insulation boards. [0004] Now, the tertiary air duct in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/10B32B13/06C04B14/06
Inventor 孙祥云李伟国于祥旭毛战红
Owner 莱州明发隔热材料有限公司
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