SU1719351A1 - Process for manufacturing decorative facing tiles - Google Patents

Abstract

The invention relates to the building materials industry, namely to the production of decorative facing tiles for interior and exterior decoration of buildings, as well as for flooring. In order to increase the mechanical strength and reduce the water absorption of decorative facing slabs in a method that includes the sequential laying of silicate sand into a form, the main layer of the composition, which is prepared by mixing phosphoric slag with a fraction of 0.5-3 mm with a 25% solution liquid glass and decorative facing layer of colored glass granules, as well as heat treatment, with the ratio of the base layer to decorative facing, May. % (70 - 75) :( 25 - 30), in the preparation of the composition of the main layer, phosphorus slag fraction of 0.14-0.5 mm is additionally added and granite screenings in the following ratio, wt.%: Phosphorus slag fraction 0.5 - 3 mm 30 - 38; fractions 0.14 - 0.5 mm 5 - 10; 25% solution of liquid glass 3 - 5; glass powder 20 - 35; granite screenings 14 - 40. The physicomechanical indicators are as follows: volume weight 2000 - 2100 kg / m3, flexural strength 17.8 - 18.9 MPa, compression 45.9 - 52.5 MPa, water absorption 1, 9 - 3.6%, frost resistance 100 cycles. 3 tab. sl C

Description

The invention relates to the building materials industry, namely to the production of decorative facing materials obtained by the sintering method and intended for the interior and exterior of industrial and civil buildings and structures, as well as for flooring.

The purpose of the invention is to increase the mechanical strength and reduce water absorption.

The goal is achieved by the fact that in the method of manufacturing decorative facing slabs, which includes grinding of phosphoric slag to a particle size of 0.14 - 0.5 and 0.5 - 3 mm, moistening it with a 25% solution of liquid glass and dusting it with powder, obtained by the joint glass and granite screenings, after which a layer of silicate sand, the main layer of a hammer made of colored glass granulate followed by heat treatment, are successively placed in the form,

yu so

SL

The composition of the base layer includes the following components, wt%:

Phosphoric slag

fractions 0.5 - 3 mm30-38

fractions 0.14 - 0.5 mm5-10

25% liquid solution

glass3-5

Glass powder20 - 35

Granite screenings14-40

and the ratio of the main layer to the decorative-facing (70 - 75) :( 25 - 30).

Phosphoric slag, glass powder (broken window and container glass), granite screenings and 25% liquid glass solution were used as raw materials. The chemical composition of the raw materials is shown in Table 1.

Decorative facing plates are made as follows.

Phosphoric slag is subjected to crushing and sifting through a sieve with sizes of 0.14 - 0.5 and 0.5 - 3 mm. Cullet. Granite screenings are subjected to joint grinding in a ball mill before passing through a 0.14 mm sieve. Phosphoric slag granules with fractions of 0.14–0.5 and 0.5–3 mm and a 25% solution of liquid glass are loaded into the mixer and subjected to mixing until the surface of the granules is completely wetted with a solution of liquid glass. Then load a mixture of glass powder and granite screenings and continue mixing. Thereafter, phosphorus slag granules coated with glass powder are placed in ceramic or cast iron forms on a layer of silicate sand 2 mm thick, to prevent the plate from sticking to the form. Then a top layer of colored glass granules is applied. The ratio of the upper and lower layers is (25-30): (70-75)%. The plates are burned in a tunnel oven at a temperature of 930 - 950 ° C with a shutter speed of 30 - 45 minutes. Table 2 shows the composition of the main layer. The properties of the plates are given in table 3.

Claims (1)

Note. The ratio between the decorative and basic layers, respectively, wt.% For 1 composition 25:75, for 2 composition 27:73 and for 3 composition 30:70. Formula of the Invention A method of manufacturing decorative facing tiles comprising sequential laying in the form of silicate sand a basic layer of a composition that is prepared by mixing phosphoric slag of a fraction of 0.5 - 3 mm with a 25% solution of liquid glass. A layer of colored glass granulate, heat treatment, the mass ratio of the base layer and decorative facing is 70 to 75:25 to 30, characterized in that, in order to increase mechanical strength and reduce water absorption, when Phosphoric slag with a fraction of 0.14-0.5 mm and granite screenings are additionally introduced into the composition of the base layer at the following ratio of components, wt.%: Phosphoric slag fractions 0.5 - 3 mm30-38 fractions of 0.14-0.5 mm5-10 25% solution of liquid glass3-5 Glass powder20 - 35 Granite screenings14-40 .Table 1 I ----- Composition, wt.% SiOj I AlgO, keg (H TsaO H MgO 1 I 2P J K20 I PzOj. IF S03 ppt Phosphoric slag, 0 2.8 0, 0.11.1-1.2 2.2 1.1) Powder of glass 71.3 3.1 0.2 7 L2.2 5.2 0.16 - 0.1 | Granite screenings 72.2 12.9 .1, d zo 0.7 3, IIO 4.9 0.2 0.2 1.1 note The ratio between decorative and the main layers, respectively, a mash for 1 composition 25:75, for 2 composition 27:73 and for 3 composition 30:70. table 2