RU2410355C1 - Ceramic mass to manufacture ceramic brick - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: ceramic mass to manufacture ceramic brick includes beidellite fusible clay, ash and slag material and slag of nickel-skeleton catalyst, with the following content, wt %: SiO₂ - 5.2; Al₂O₃ -26.7; Fe₂O₃ - 0.8; CaO - 2.9; MgO - 1.3; R₂O - 24.7, their mass fractions being as follows, wt %: beidellite low-melting clay - 50-70; ash-and-slag material - 15-25; slag of nickel-skeleton catalyst - 15-25.

EFFECT: increased strength and 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.

The ceramic mass for producing bricks of the following composition is known, wt.%: Clay part of the “tails” of gravity of zircon-ilmenite ores - 20-70, ash TPP - 30-80 / Abdrakhimov DV Ceramic brick from industrial wastes / D.V. Abdrakhimov, E.S. Abdrakhimova, V.Z. Abdrakhimov. // Construction Materials. - 1999. - No. 9. - C 34-35 / [1].

The disadvantage of this composition is the relatively low compressive strength of the brick (10.4-16.8 MPa).

Closest to the invention is a ceramic mass for the manufacture of bricks, including the following components, wt.%: Beidellite fusible clay - 50-70, ash and slag material - 15-25, carbonate sludge - 15-25 / Pat. 2346908 of the Russian Federation, IPC С04 33/132. Ceramic mass for the manufacture of ceramic bricks / I.V. Kovkov, V.V. Shevando, V.Z. Abdrakhimov, D.Yu. Denisov, E.S. Abdrakhimova, A.V. Abdrakhimov, E.V. Vdovina; applicant and patent holder of SSASU; declared 01/09/2007; publ. 02/20/2009, Bull. - 2009. - No. 5 / [2]. Adopted for the prototype.

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

The essence of the invention is improving the quality of building materials.

The technical result of the invention is to increase the compressive strength and frost resistance of a brick.

The specified technical result is achieved by the fact that in the well-known ceramic mass, including beidellite fusible clay and ash and slag material, nickel-skeletal catalyst slurry is additionally introduced in the following ratio, wt.%:

beidellite fusible clay 50-70; ash and slag material 15-25;

sludge nickel-skeletal catalyst with a content, wt.%:

SiO ₂ 5.2; Al ₂ O ₃ - 26.7; Fe ₂ O ₃ - 0.8; CaO - 2.9; MgO - 1.3; R ₂ O - 24.7 15-25.

Sludge of a nickel-skeletal catalyst is formed during the processing of aluminum alloys at metal processing and metallurgical plants. The increased content in the sludge of the nickel-skeletal catalyst Al ₂ O ₃ allows using it in ceramic masses to increase the frost resistance of bricks. The high alkali content in the sludge (R ₂ O = 24.7%) will reduce the firing temperature of the brick or its sintering at relatively low firing temperatures and thereby increase the strength of the brick.

The chemical composition of the sludge of the nickel-skeletal catalyst is represented by the following oxides, wt.%: SiO ₂ - 5.2; Al ₂ O ₃ - 26.7; Fe ₂ O ₃ - 0.8; CaO - 2.9; MgO - 1.3; R ₂ O - 24.7; p.p.p. - 37.1, and the mineralogical composition - aluminum hydroxide, impurities of hydroaluminates and sodium bicarbonates.

Information confirming the possibility of carrying out the invention.

The ceramic mass was prepared in a plastic way at a moisture content 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 compositions of ceramic masses, and in table 2 the physical and mechanical properties of bricks.

Table 1 The compositions of ceramic masses Components The content of components, wt.% one 2 3 Beidellite fusible clay of Obraztsovsky deposit 70 60 fifty Ash and slag material of the Togliatti TPP fifteen twenty 25 Nickel skeletal sludge fifteen twenty 25

table 2 Physico-mechanical properties of bricks Indicators Compositions Prototype one 2 3 Mechanical compressive strength, MPa 17.8 19,2 20.1 10,4-16,8 Frost resistance cycles 78 83 94 45-67

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

The resulting technical solution when using sludge of a nickel-skeletal catalyst allows to increase the mechanical compressive strength and frost resistance of the brick.

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

INFORMATION SOURCES

1. Abdrakhimov D.V. Ceramic brick from industrial wastes / D.V. Abdrakhimov, E.S. Abdrakhimova, V.Z. Abdrakhimov. // Construction Materials. - 1999. - No. 9. - C 34-35.

2. Pat. 2346908 of the Russian Federation, IPC С04 33/132. Ceramic mass for the manufacture of ceramic bricks / I.V. Kovkov, V.V. Shevando, V.Z. Abdrakhimov, D.Yu. Denisov, E.S. Abdrakhimova, A.V. Abdrakhimov, E.V. Vdovina; applicant and patent holder of SSASU; declared 01/09/2007; publ. 02/20/2009, Bull. - 2009. - No. 5.

Claims (1)

Ceramic mass for the manufacture of ceramic bricks, including beidellite fusible clay and ash and slag material, characterized in that it additionally contains a slurry of a nickel-skeletal catalyst with a content, wt.%: SiO _{2 of} 5.2; Al ₂ O ₃ - 26.7; Fe ₂ O ₃ - 0.8; CaO - 2.9; MgO - 1.3; R ₂ O - 24.7, in the following ratio of components, wt.%:
beidellite fusible clay 50-70 ash and slag material 15-25 nickel skeletal sludge 15-25