SU1359269A1 - Ceramic compound - Google Patents

Abstract

The invention relates to building materials and can be used to make ceramic wall materials. The purpose of the invention is to reduce the molding moisture of the raw, increase its moisture loss during drying and reduce air shrinkage. Ceramic mass contains, wt%: non-plastic clay 44.5-62; coal preparation waste 4-5.6; fly ash 27-43,7; spent coolant based on mineral oil 5.4-7.8. Air shrinkage of ceramic material 1.75-2.58%. 2 tab. with SS

Description

The invention relates to building materials and can be used in the technology of making ceramic wall materials.

The purpose of the invention is to reduce the forming moisture, increase moisture-drying during drying and reduce air shrinkage.

The invention is illustrated by examples of specific performance shown in the table.

The used coolant is formed as a waste in a bearing plant, it is an aqueous emulsion of oil in an aqueous solution of surfactants. It consists of mineral oil 18-22, soda 0.4-0.8, sodium nitrite 0.2-1.3, triethanolamine 0.2-0.5, water - the rest. The chemical composition of the ash-unrs, wt.%: SiO ,, 60; 26.5; ReO + Pe Oz 10; CaO 1.5; MgO 0.6; SO, 0.3, loss on ignition else.

Shredded coal preparation wastes are introduced into the clay of natural moisture, followed by fly ash and used cooling fluid.

Pressed samples are subjected to natural and forced drying. Ji is fired in a tunnel kiln. The physicomechanical characteristics of the samples are given in Table. 2

Used coolant is adsorbed on the surface of fly ash particles.

62 53.5 47 44.5

  7.7. 7.1

p

0

five

0

five

which are fused particles, and acts as a lubricant, as a result of which the molding moisture is reduced, the heat costs of drying are reduced, and forced modes of drying the raw material can be used. By increasing the homogeneity of the molding material, the strength of the material is slightly increased.

The application of the proposed technical solution does not require additional material costs and changes in the existing technology for the manufacture of ceramic wall materials.

Formula Invention

Ceramic mass, including non-plastic clay and coal preparation waste, characterized in that, in order to reduce the molding moisture, increase moisture yield during drying and reduce air shrinkage, it additionally contains fly ash and spent coolant based on mineral oil with the following the ratio of components, wt.%:

Non-plastic clay 45.5-62 Coal-enrichment waste 4-5,6 Fly ash 27-43,7

Used coolant based on mineral oil5.4-7.8

Table 1

Properties of ceramic mass

Molding moisture, wt.% 17.817,, 7

Firing temperature, ° С1050105010501050

Air shrinkage,% 2,582,51,751,75

Compressive strength, kgf / cm 1009710398

Water loss during drying,%, 15,015,61716,55

Bulk density, g / cm 1,661,661,631,64

Table 2

Indicators of the properties of the compositions of the ceramic mass according to examples

Prototype

one

24

1050

4.2

82

13.5

1.73

Claims (1)

Claim Ceramic mass, including non-ductile clay and coal preparation waste, characterized in that, in order to reduce the molding moisture, increase moisture loss during drying and reduce air shrinkage, it additionally contains fly ash and spent mineral oil-based lubricating coolant in the following ratio of components, wt .%: Non-ductile clay 45.5-62 Coal Waste 4-5,6 Fly ash 27-43.7 Spent lubricant coolant based on mineral oils 5.4-7.8 Table 1 Non-ductile clay Coal Waste Fly ash Used coolant 62 53.5 47 44.5 5,6 4.8 4.3 4.0 27 35 41 43.7 5.4. 6.7 7.7 7.8 Table 2 Ceramic properties The properties of the compositions of the ceramic mass in the examples Prototype * I I. I I I I I I I I I I I I - <G I -------------------------------! I 'I I I I I I I I cp I I I L_________________I Molding moisture wt.% 17.8 17.4 17.1 16.7 24 Firing temperature, ° C 1050 1050 1050 1050 1050 Air shrinkage,% 2,58 2,5 1.75 1.75 4.2 Compressive strength, kgf / cm ^g 100 97 103 98 82 Loss of water during drying, % 15.0 15.6 17 16.55. 13.5 Bulk density, g / cm ³ 1.66 1.66 1,63 G 64 1.73