Inorganic heat-insulating mortar and preparation method thereof

A technology of inorganic thermal insulation mortar and water retention agent, which is applied in the field of building materials, can solve the problems of not obvious advantages in thermal insulation performance and high thermal conductivity of cement, and achieve the effects of high strength, good water resistance and increased strength

Active Publication Date: 2015-04-01
HUNAN NONFERROUS ENVIRONMENTAL PROTECTION BUILDING MATERIALS
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  • Application Information

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Problems solved by technology

This kind of inorganic thermal insulation mortar uses cement as the cementitious material, which has the advantage

Method used

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  • Inorganic heat-insulating mortar and preparation method thereof

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[0032] In the present invention, the fluorogypsum powder is ground fluorogypsum. The preparation method of the fluorogypsum powder preferably includes the following steps:

[0033] The fluorogypsum is sequentially neutralized, aged, and ground to obtain fluorogypsum powder.

[0034] The present invention does not have special restrictions on the source of the fluorogypsum. For example, fluorogypsum, the waste residue generated by a fluorine chemical enterprise in the production of hydrogen fluoride or fluoride salt, can be used. In the present invention, before neutralizing the fluorogypsum, the fluorogypsum is preferably cooled. After the cooling is completed, the present invention neutralizes the cooled fluorogypsum. The present invention has no special restrictions on the neutralization method, and the technical solution of adding lime and stirring well known to those skilled in the art can be used; adding the lime The amount is preferably 0.4 wt% to 0.6 wt%.

[0035] After the...

Example Embodiment

[0080] Example 1

[0081] (1) The fluorogypsum powder is prepared from waste fluorogypsum discharged from Hunan Nonferrous Xiangxiang Fluorochemical Co., Ltd. as a raw material. The fluorogypsum is anhydrous fluorogypsum with a calcium sulfate content of more than 90%. The temperature of the freshly discharged fluorogypsum is above 200°C and it is acidic. The fluorogypsum is naturally stacked and cooled, and 0.5wt% lime is added to stir evenly. After 3 days of aging, it is ground by a ball mill to obtain a fineness of 200 meshes. 300 mesh fluorogypsum powder.

[0082] (2) Combine 40kg of fluorogypsum powder obtained in step (1), 16kg of ultrafine slag powder, 5.2kg of 42.5 grade ordinary Portland cement, 1.5kg of quicklime, 0.2kg of industrial grade Na 2 SO 4 , 1.2kg industrial grade K 2 SO 4 , 0.5kg of 24-88 type polyvinyl alcohol powder, 0.3kg of hydroxypropyl methylcellulose and 0.1kg of RN31 type air-entraining agent are added to the ball mill, fully stirred and ground to obtai...

Example Embodiment

[0084] Example 2

[0085] (1) The fluorogypsum powder is prepared from waste slag fluorogypsum discharged by Hunan Nonferrous Xiangxiang Fluorochemical Co., Ltd. as a raw material. The fluorogypsum is anhydrous fluorogypsum with a calcium sulfate content of more than 90%. The temperature of the freshly discharged fluorogypsum is above 200°C and it is acidic. The fluorogypsum is naturally stacked and cooled, and 0.5wt% lime is added and mixed uniformly. After aging for 3 days, it is ground by a ball mill to obtain a fineness of 200 mesh. 300 mesh fluorogypsum powder.

[0086] (2) Combine 50kg of fluorogypsum powder obtained in step (1), 12kg of ultrafine slag powder, 5kg of 42.5 grade ordinary Portland cement, 1.6kg of quicklime, 0.2kg of industrial grade Na 2 SO 4 , 0.6kg industrial grade K 2 SO 4 , 0.3kg of 24-88 type polyvinyl alcohol powder, 0.2kg of hydroxypropyl methylcellulose and 0.1kg of RN31 type air-entraining agent are added to the ball mill, fully stirred and ground to ...

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Abstract

The invention provides an inorganic heat-insulating mortar and a preparation method thereof. The inorganic heat-insulating mortar comprises the following components in percentage by weight: 40%-70% of fluorgypsum powder, 0.5%-20% of alkaline exciting agents, 0.5%-5% of sulfate exciting agents, 0.05%-2% of additives and 20%-35% of light-weight aggregates. The inorganic heat-insulating mortar provided by the invention is prepared by taking fluorgypsum as a cementing material, properly doping the alkaline exciting agents, the sulfate exciting agents and a small amount of additives and then adding the light-weight aggregates. Compared with the prior art, the inorganic heat-insulating mortar provided by the invention has the advantages of low heat conduction coefficient, good water resistance and high strength.

Description

technical field [0001] The invention relates to the technical field of building materials, and more specifically relates to an inorganic thermal insulation mortar and a preparation method thereof. Background technique [0002] With the rapid development of society and the continuous improvement of people's living standards, energy consumption is becoming increasingly severe. How to efficiently save energy and reduce energy consumption has become the key to solving energy problems. In my country, building energy consumption has accounted for 46.7% of the total energy consumption of the whole society, which directly affects the sustainable development of my country's social economy, and improving the thermal insulation performance of buildings is the key to reducing building energy consumption. Therefore, research and development of building wall Insulation materials are of great significance. [0003] Building thermal insulation mortar reduces building energy consumption by i...

Claims

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Application Information

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IPC IPC(8): C04B28/14
Inventor 徐松梅陈建武付立军
Owner HUNAN NONFERROUS ENVIRONMENTAL PROTECTION BUILDING MATERIALS
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