SU777015A1 - Method of making ceramic decorative plates - Google Patents

Description

one

The invention relates to construction materials, in particular, to methods for producing decorative and decorative ceramic tiles used in residential, civil and industrial construction.

A known method of making ceramic products by mixing is 80-85 wt. % ash with 15-20 wt. % clay, molding, drying and firing 1.

The closest to the invention is a method of manufacturing decorative tiles by molding a bar, drying, burning and cutting the bar into tiles 2.

The disadvantages of the method of obtaining colored tiles are the need to use multicomponent glazes and re-firing after glazing, the difficulty of simultaneously obtaining various color tops on the surface of the tiles.

The purpose of the invention is to improve the technology and the expansion of the color gamut on the surface of the tiles.

This goal is achieved by the fact that in the method by forming a bar from an ash-based charge mixture with the addition of glyps, drying, burning and cutting the bar into tiles, firing is carried out by raising the temperature from

speed of 17-20 ° C / min to 800-850 ° C and holding at this temperature for 65-75 min, followed by raising its temperature at the same speed up to 1000-1050 ° C 5 and holding at this temperature for 30 -40 min Example.

To obtain the proposed method of decorative and decorative gold-ceramic

10 tiles of the raw mix, consisting of 85% of TPP ash and 15% of highly plastic finely ground clay, are mixed in a mixer, a bar in the form of a prism 200-300x50x50 mm is formed on a belt press

15 or-cylinder d 50 mm, h 200-300 mm, subjected to drying, and then firing in the mode: temperature rise to 850 ° С with an average speed of 17 ° С / min; holding at 850 ° С for 70 min, then raising the temperature to 1050 ° at a speed of 20 ° С / mp;

holding at maximum temperature

35 min. The whole firing cycle is

2.75 h.

Burnt timber and cylinder cut

25 abrasive circles across respectively the required thickness of the tiles (5-10 mm).

The surface of the obtained tiles has a different color, forming, due to

30 with varying degrees of iron oxidation and

Combustion of carbon particles inside the body under conditions of limited access of oxygen.

The painted concentric rings are arranged as follows: in the middle - a circle with a diameter of 25 mm of brown color, circled by a bright line with a width of 1.0-1.5 mm, then a purple-red ring with a width of 5 mm, surrounded by a light gray line with a width of 1.5-2.0 mm, and to the edge of yellow-brown color 3.7 mm wide.

Obtained by the proposed method, the tiles have a compressive strength of 150–250 kgf / cm, a bulk weight of 1300–1500 kg / m, water absorption, 10–23%, and a frost resistance of 50 cycles.

Thus, the invention makes it possible to obtain finishing tiles with an original effect in a single firing and to reduce complex operations for the preparation and firing of various coloring materials (glazes).

Formula invented

A method of making ceramic decorative tiles by molding a bar

from the ash-based mixture with the addition of clay, drying, and cutting the bar into tiles, characterized in that, in order to simplify the technology and expand the color gamut on the surface of the tiles, firing is carried out by raising the temperature at a rate of 17-20 ° C / min to 800-850 ° C and holding at this temperature for 65-75 minutes, then raising the temperature at the same speed up to 1000-1050 ° C

and holding at this temperature for 30-40 minutes.

Sources of information taken into account in the examination

1.PFA in bricks “Brit dayworker. 1964, 73, No. 869 335-337, 340.

2.Moroz I.I. Technologists of building ceramics. Kiev, Gosstroyizdat USSR, 1961, p. 222-228.

Claims (1)

Forum la invented "I A method of manufacturing ceramic decorative tiles by forming a beam 5 from a charge based on ash with the addition of clay, drying, firing and cutting the beam into tiles, characterized in that, in order to simplify the technology and expand the color gamut on the surface of the tiles, firing is carried out by raising the temperature at a speed of 17–20 ° С / min up to 800–850 ° С and holding at this temperature for 65–75 minutes, then raising it at the same speed to 1000–1050 ° С 15 and holding at this temperature for 30–40 min