SU1730079A1 - Ceramic body for manufacturing construction products - Google Patents

Abstract

This invention relates to ceramic technology, in particular, to compositions of masses for the production of large-sized wall products. In order to manufacture large-sized products, increase the diffusion of moisture and the crack resistance of products during the drying process, the ceramic mass includes the following components, wt%: kaolin 50-70; hydromica 5-40; montmorillonite 2-15; coal 3-15. Physicomechanical indicators are the following: diffusion of moisture - 6.9. m2 / s, crack resistance 1-5%, ultimate compressive strength 7.0-15.0 MPa. 2 tab.

Description

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This invention relates to ceramic technology, namely, to compositions of masses for the production of large-sized wall products.

Ceramic mass is known, including, in wt.%: Kaolinite 31-43; montmorillonite 26-39; quartz 13-23 and fin 10-30.

Closest to the claimed is a ceramic mass, including kaolinite, hydromica, montmorillonite, desiccant and flux, in the following ratio, wt.%::

Kaolinite17-32

Hydromica 10-32

MONTMORILLONITE1-10:

Cleaner7-20

Plavn12-45

However, this ceramic mass, as described above, is suitable only for the production of tiles and is not suitable for the manufacture of large-sized products, since it has a low diffusion of moisture and crack resistance of products during drying.

The mass (prototype) contains in its composition an ototitel and a fluid. The cleaner does not affect the change in the diffusion of moisture, and with its considerable content (more than 10%), the strength of the products decreases, which makes it impossible to manufacture large-sized tiles. Smoothness reduces the sintering temperature of the ceramic; tiles. Putting it into the claimed mass would lead to a significant reduction in the crack resistance of large-sized products. The purpose of the invention is the manufacture of large-sized products, increasing the diffusion of moisture and crack resistance of products during the drying process. At the same time receive a new type of products of construction ceramics high-. quality, expands the raw material base.

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So about XI th

The goal is achieved by the fact that the ceramic mass for the manufacture of large-sized building products, including kaolinite, hydromica and montmorillonite, contains coal in the following ratio of components, May. %:

Kaolinit50-70

Hydromica 5-40

Montmorillonite2-15

Coal3-15

The use of the described composition of the mass makes it possible to achieve this goal by controlling the amount of dispersion of the solid phase of the charge. The proposed composition of the mass makes it possible to reduce the dispersion of the solid phase of the charge, which leads to a firm junction of the structural layers in the crystals of minerals with hydrogen bonds and eliminates the likelihood of penetration of the dispersion medium into the interplanar spaces of the crystals. The combination of kaolinite, hydromica, montmorillonite and coal in the proportional ratio provides the capacity of the adsorption monolayer charge to 0.7%, the diffusion of moisture ami 10 - not less than 4 m / s, the crack resistance of large-sized ceramic products with a cross section of more than 250x250 mm and a height of more than 300 mm

The ratio of clay minerals and coal in the ceramic mass is achieved by using waste coal and clay of different mineralogical composition, as well as by adjusting the composition of the masses by adding clay minerals and coal.

The invention is illustrated by the following examples.

The composition of ceramic masses

Ceramic mass is prepared in accordance with modern technology of building ceramics.

The kaolinite of the Glukhovetsky field, the hydromica of the Dashukovsky field and the montmorillonite of the Dashukovsky field are dried in a tumble dryer and crushed in a hammer mill before passing through a 2 mm sieve. The coal of the Sverdlovsk Center of Chemical Processing is dried in a drying drum in a ball mill to a maximum particle size of not more than 2 mm. The withdrawn components are mixed in the mixer. Then, in the second mixer, the mixture is moistened to obtain a plastic mass. The products are made by plastic forming on a vertical belt press, dried for 24 hours and burned in a tunnel kiln at a maximum firing temperature of 1050 ° C for 33 hours. Products are 300x450 mm and height is 1000 mm.

In tab. 1 presents examples of the composition of ceramic masses, in table. 2 - product properties.

Claims (1)

Formula for Reusability Ceramic mass for the manufacture of building products, including kaolinite, hydromica, montmorillonite, due to the fact that, in order to manufacture large-sized products, to increase the diffusion of moisture and crack resistance of products during the drying process, it additionally contains coal in the following ratio of components, wt.%: Kaolinit50-70 Hydromica 5-40 Montmorillonite2-15 Coal3-15 Table 1 Product properties table 2