RU2326850C2 - Ceramic mixture for making ceramic bricks - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: ceramic mixture for making bricks consists of low-melting clay and calcium-magnesium containing regulus from production of mineral wool, with the following percentage mass ratios of the components: low-melting clay - 70-90%; calcium-magnesium containing regulus from production of mineral wool - 10-30%.

EFFECT: increased frost-resistance of the ceramic bricks.

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Description

The invention relates to the industry of ceramic materials, mainly to the composition of the masses for ceramic bricks.

Known ceramic mass for ceramic bricks of the following composition, wt.%: Loesslike loam 91-97, coal fines 1-3, water-slag slag 2-4 / A.s. 1539185 USSR, IPC С04В 33/00. Ceramic mass for the manufacture of bricks / Abdrakhimov V.Z. - publ. 01/30/90, Bull. No. 4 / [1].

The disadvantage of this composition is the relatively low frost resistance (18-26).

Closest to the invention is a ceramic mass for the manufacture of ceramic bricks, comprising the following components, wt.%: Fusible clay 50-90, metallurgical slag 10-50 / Agafonova N.S. Optimization of the composition of ceramic masses according to the mechanical properties of bricks / N.S. Agafonova, V.Z. Abdrakhimov, E.S. Abdrakhimova, V.P. Dolgiy // University proceedings. Construction. - 2005. - No. 5. - S. 53-58. / [2]. Adopted for the prototype.

The disadvantage of this composition of the ceramic mass is the relatively low frost resistance.

The technical result of the invention is to increase the frost resistance of ceramic bricks.

The specified technical result is achieved by the fact that in the well-known ceramic mass, including fusible clay, calcium-magnesium-containing “bead” from the production of mineral wool is additionally introduced in the following ratio of components, wt.%:

fusible clay 70-90 calcium-magnesium-containing "bead" from production mineral wool 10-30

Calcium-magnesium-containing "crown" from the production of mineral wool is formed after the melting of raw materials in the production of mineral wool.

The mineralogical composition of the "king" is mainly represented by the glass phase.

Calcium-magnesium-containing "crown" from the production of mineral wool was used as flux. Having a high content of glass phase, calcium (CaO - 23.6%) and magnesium (MgO - 14.6%), the calcium-magnesium “bead” from the production of mineral wool contributes to the sintering of ceramic bricks, while the frost resistance of products increases. As the clay component, the clay of the Preobrazhenskoye deposit was used, which was fusible (refractoriness 1200-1250 ° C), medium-plastic (plasticity number 10-15) highly sensitive to drying, and hydromica-kaolinite in mineralogical composition. The chemical composition of the components is given in table 1.

The chemical composition of the components Table 1 Components The content of components, wt.% SiO ₂ Al ₂ About ₃ Fe ₂ O ₃ CaO MgO R ₂ O p.p.p. Calcium-Magnesium-containing "Korolek" from the production of mineral wool 43,2 7.3 6.72 23.6 14.6 2.79 - Transfiguration clay 59.3 14.5 5.62 4,5 2.1 3.2 7.25

Information confirming the possibility of carrying out the invention. The ceramic mass was prepared in a plastic way with a mixture moisture of 18-22%. The molded brick, dried to a residual moisture content of not more than 8%, was fired at a temperature of 1000-1050 ° C. The isothermal exposure at the final temperature was 15 min. Table 2 shows the composition of ceramic masses, and in table 3 - physical and mechanical properties of ceramic bricks.

The compositions of ceramic masses Table 2 Components The content of components, wt.% one 2 3 four 5 Transfiguration clay 90 85 80 75 70 Calcium-Magnesium-containing "Korolek" from the production of mineral wool 10 fifteen twenty 25 thirty Physico-mechanical properties of ceramic tiles Table 3 Indicators Compositions Prototype one 2 3 four 5 Frost resistance cycles 85 91 103 108 105 30-55 Mechanical compressive strength, MPa 21.3 22.4 23.8 25,2 26,4 13.2-18.0

As can be seen from table 3, the ceramic brick of the proposed compositions has a higher frost resistance and mechanical compressive strength than the prototype.

The obtained technical solution when using calcium-magnesium-containing “king” from the production of mineral wool allows to increase the mechanical compressive strength and frost resistance of ceramic bricks.

The use of industrial raw materials in the production of ceramic bricks contributes to the utilization of industrial waste, environmental protection and the expansion of the raw material base for ceramic materials.

INFORMATION SOURCES

1. A.S. 1539185 USSR, IPC С04В 33/00. Ceramic mass for the manufacture of bricks / Abdrakhimov V.Z. - publ. 01/30/90, Bull. Number 4.

2. Agafonova N.S. Optimization of the composition of ceramic masses according to the mechanical properties of bricks / N.S. Agafonova, V.Z. Abdrakhimov, E.S. Abdrakhimova, V.P. Dolgiy // University proceedings. Construction. - 2005. - No. 5. - S.53-58.

Claims (1)

Ceramic mass for the manufacture of ceramic bricks, including low-melting clay, characterized in that it additionally contains calcium-magnesium-containing "bead" from the production of mineral wool in the following ratio, wt.%: fusible clay  70-90 calcium-magnesium-containing "kinglet" from the production of mineral wool  10-30