RU2466112C1 - Ceramic mixture for making ceramic bricks - Google Patents

Abstract

FIELD: chemistry.

SUBSTANCE: invention relates to the industry of ceramic materials, mainly to compositions of mixtures for making bricks. The ceramic mixture of making ceramic bricks contains low-melting clay and silver-gold alloy wastes in form of cupola slag from production of mineral wool containing oxides, wt %: SiO₂ - 45.7; Al₂O₃ - 8.9; Fe₂O₃ - 9.84; CaO - 21.8; MgO - 6.8; R₂O - 5.78, with the following ratio of components in wt %: low-melting clay 70-90; silver-gold alloy wastes in form of cupola slag from production of mineral wool 10-30.

EFFECT: high frost resistance.

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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 brick of the following composition, wt.%: Fusible clay 50-90, metallurgical slag 10-50 / Agafonova N.S. The 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 / [1].

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

Closest to the invention is a ceramic mass for the manufacture of bricks, including the following components, wt.%: Low-melting clay - 70-90, calcium-magnesium-containing "crown" from the production of mineral wool - 10-30 / Kovkov I.V. Patent RU No. 2323250, C04B 33/132. Ceramic mass for the manufacture of ceramic bricks. / I.V. Kovkov, E.S. Abdrakhimova, V.Z. Abdrakhimov. Published on June 20th, 2008. Bull. No. 17 / [2]. Adopted for the prototype.

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

The invention is an increase in frost resistance of a brick.

The technical result of the invention is to improve the quality of ceramic bricks.

The specified technical result is achieved by the fact that in the well-known ceramic mass, including low-melting clay, "korolka" waste is additionally introduced in the form of cupola slag from the production of mineral wool with an oxide content of%: SiO ₂ - 45.7; Al ₂ O ₃ - 8.9; Fe ₂ O ₃ - 9.84; CaO - 21.8; MgO - 6.8; R ₂ O - 5.78 in the following ratio of components, wt.%:

Fusible clay 70-90 Waste of the “king" in the form of cupola slag from the production of mineral wool 10-30

Waste “korolka” in the form of cupola slag from the production of mineral wool is formed after the melting of raw materials in the production of mineral wool. The chemical composition of the king waste in the form of cupola slag is represented by the following oxides, wt.%: SiO ₂ - 45.7; Al ₂ O ₃ - 8.9; Fe ₂ O ₃ - 9.84; CaO - 21.8; MgO - 6.8; R ₂ O - 5.78. The mineralogical composition of the Korolka waste in the form of cupola slag is mainly represented by the glass phase.

The increased content of calcium oxides (CaO> 20%), iron (Fe ₂ O ₃ = 9.84%) and alkalis (R ₂ O = 5.78%) in the Korole waste in the form of cupola slag will contribute to the sintering of ceramic bricks.

Information confirming the possibility of carrying out the invention. The ceramic mass was prepared in a plastic way at a humidity of 20-24%, from which the brick was molded, raw brick was dried to a moisture content of not more than 8% and then fired at a temperature of 1050 ° C. Table 1 shows the composition of ceramic masses, and in table 2 - physical and mechanical properties of bricks.

Table 1 The compositions of ceramic masses Components The content of components, wt.% one 2 3 four Fusible clay 90 85 80 70 Waste “korolka” in the form of cupola slag from the production of mineral wool 10 fifteen twenty thirty

table 2 Physicomechanical indicators of acid resistance Indicators Compositions Prototype one 2 3 four Frost resistance cycles 107 109 115 118 85-105 Mechanical compressive strength, MPa 22.2 23.5 25.8 26.8 21.3-26.4

As can be seen from table 2, the bricks of the proposed compositions have higher rates of frost resistance and compressive strength than the prototype.

The technical solution obtained when using “korolka” waste in the form of cupola slag from the production of mineral wool allows to increase frost resistance and mechanical compressive strength of bricks.

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

Information sources

1. 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. Kovkov I.V. Patent RU No. 2323250, С04В 33/132. Ceramic mass for the manufacture of ceramic bricks. / I.V. Kovkov, E.S. Abdrakhimova, V.Z. Abdrakhimov. Published on June 20th, 2008. Bull. Number 17.

Claims (1)

Ceramic mass for the manufacture of ceramic bricks, including low-melting clay, characterized in that it additionally contains waste "korolka" in the form of cupola slag from the production of mineral wool with an oxide content, wt.%: SiO ₂ - 45.7; Al ₂ O ₃ - 8.9; Fe ₂ O ₃ - 9.84; CaO - 21.8; MgO - 6.8; R ₂ O - 5.78 in the following ratio of components, wt.%:
fusible clay 70-90 waste "king" in the form cupola slag from the production of mineral wool 10-30