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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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  • Abstract
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Problems solved by technology

This kind of inorganic thermal insulation mortar uses cement as the cementitious material, which has the advantages of high compressive strength, strong impact resistance, and good water resistance. The advantage is not obvious

Method used

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  • Inorganic heat-insulating mortar and preparation method thereof

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preparation example Construction

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

[0033] The fluorine gypsum is neutralized, aged and ground in sequence to obtain fluorine gypsum powder.

[0034] The present invention has no special limitation on the source of the fluorine gypsum, for example, waste residue fluorine gypsum generated in the process of producing hydrogen fluoride or fluoride salt by fluorine chemical enterprises 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 limitation on the neutralization method, and the technical scheme of adding lime and stirring well known to those skilled in the art can be adopted; the addition of the lime The amount is preferably 0.4 wt% to 0...

Embodiment 1

[0081] (1) Fluorogypsum powder is prepared from the waste residue fluorogypsum discharged from Hunan Nonferrous Xiangxiang Fluorochemical Co., Ltd., and 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, which is acidic. The fluorogypsum is naturally stacked and cooled, and 0.5wt% of lime is added to stir evenly. After aging for 3 days, it is ground by a ball mill to obtain a fineness of 200-mesh 300 mesh fluorine gypsum powder.

[0082] (2) 40kg of fluorine gypsum powder obtained in step (1), 16kg of superfine slag powder, 5.2kg of ordinary Portland cement of 42.5 grade, 1.5kg of quicklime, 0.2kg of industrial grade Na 2 SO 4 , 1.2kg industrial grade K 2 SO 4 , 0.5kg24-88 type polyvinyl alcohol micropowder, 0.3kg hydroxypropyl methylcellulose and 0.1kgRN31 type air-entraining agent are added in the ball mill, after fully stirring, grind to obtain a mixture with a...

Embodiment 2

[0085] (1) Fluorogypsum powder is prepared from the waste residue fluorogypsum discharged from Hunan Nonferrous Xiangxiang Fluorochemical Co., Ltd., and 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, which is acidic. The fluorogypsum is naturally stacked and cooled, and 0.5wt% of lime is added to stir evenly. After aging for 3 days, it is ground by a ball mill to obtain a fineness of 200-mesh 300 mesh fluorine gypsum powder.

[0086] (2) The fluorine gypsum powder that 50kg step (1) obtains, 12kg superfine slag powder, 5kg42.5 ordinary Portland cement, 1.6kg quicklime, 0.2kg industrial grade Na 2 SO 4 , 0.6kg industrial grade K 2 SO 4 , 0.3kg24-88 type polyvinyl alcohol micropowder, 0.2kg hydroxypropyl methylcellulose and 0.1kgRN31 type air-entraining agent are added in the ball mill, after fully stirring, grind to obtain a mixture with a fineness of 200 mesh....

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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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