RU2004519C1 - Ceramic mass - Google Patents

Abstract

Usage: the building materials industry, in particular, is intended for the manufacture of ceramic tiles, tiles, bricks and ceramic blocks. SUMMARY OF THE INVENTION — Ceramic mass contains, wt.%: Clay 50-80; sea quartz sand 5-20; aegirine concentrate 10 to 45. The components are thoroughly mixed, formed into blanks, dried and fired at 950 -1000 °; Indicators: tensile strength in bending 12.30-2697 kg / cm2, water absorption 2 - 25%. 1 tab.

Description

The invention relates to the building materials industry, in particular ceramic production, and can be used for the manufacture of ceramic tiles, tiles, bricks and ceramic blocks,

Lime ceramic mass containing. wt.%: low-melting clay 25-30; (refractory lenses 26-29; granite screens 10-16; tiled combat 5-10; cullet 2.5-0; nepheline aegirine-feldspar waste 10-15; fireclay 0.5-15 1.

The disadvantages of the product from this composition are high water absorption, low mechanical strength and decorative monotony. In addition, multicomponentity creates difficulties in the unification of products from this composition.

Closest to the described invention is a ceramic mass for the manufacture of tiles, including the following (1.: - components, wt.%: Clay 27; kaolin sand quartz 28; tile battle 5, pyrimnoy concentrate 28 2.

The first drawback of this technical solution is the use in the composition of the ceramic mass of waste with an increased radiation background, legs, and composition, as well as the production of products with relatively low mechanical strength and high water absorption.

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

This goal is achieved due to the fact that the ceramic mass, including clay, zygin concentrate and marine quartz sand, contains these components in the following ratio, wt.%: Clay 50-85; sea quartz sand 5-20; Aegirine concentrate 10-45.

The ceramic mass used was fusible, half acid, moderate clay plasticity with the following content of components, wt.%: SI02 no more than 70, A1gO3 and TiO2 no less than 15, the sum of CaO and MdO not more than 7; 80h no more than 1; the sum of FeO and ReaOz is not more than 10; the sum of CrO and NaaO no more than 7, p.p.p. - no more than 5.

Clay moisture is natural - no more than 16%.

Granulometric composition,%: fractions of not less than 1 micron - not more than 15; less than 10 microns - more than 30; 0.01-0.5 mm - not more than 10, more than 0.5 mm - not more than 1.

The technical solution used sea sand for construction work that meets the requirements of GOST-873B10

fifteen

twenty

25

thirty

5

40

45

fifty

55

,

The apatite PO aegirine concentrate obtained from the processing of apatite-nepheline ores was used as zyrin-containing waste. The concentrate has a stable chemical and particle size distribution according to TU 113-12-01-09-87. Aegirine concentrate of the Lovozero mining and processing plant was used in a number of samples.

The aegirine concentrate according to TU 113-12-01-09-37 contains, wt.%: Aegirine and aegirine-diopside 74; ofen 3; nepheline 13; titanomagnetite 1.5; feldspars 2; apatite 0.5; ilmenite 1-2; other 2-5.

Granulometric composition,%: less than 0.04 mm - 34.2; from 0.04 to 0.1 mm - 31.4; more than 0.1 mm - 24.4; of which more than 0.2 mm - not more than 10.

The concentrate includes, wt.%: SIU2 40-45; Redoz 15-20; Amount and Na20 6-11; the rest is 24-37, including NaO not more than 2.

The ceramic mass is prepared by the slip method with the joint grinding of clay and sea sand or by mixing the crushed components while moistening the mass to 10-15% humidity. The aegirine concentrate is added without further comminution with thorough mixing of all three components.

Ceramic products are fired at 950-1000 ° C, tiles and tiles are fired in high-speed mode, and brick is fired in accordance with TI 43-10-87.

The table shows the test data for six samples of tiles 50x50x4 mm. They were fired at high speed, withstanding a heating rate of 200 ° C / h. At the firing temperature, the products are isothermally aged for 30 minutes. The table shows the component compositions, firing modes and tensile strengths in bending. Water absorption of products no more than 3%, and frost resistance more than 50 cycles.

The invention allows to improve the quality and expand the raw material base of ceramic products, and also helps to solve the environmental problem of the beneficial use of waste from mining and processing industries. High mechanical strength allows expanding the range of products and procuring a new building material - a ceramic beam for load-bearing structures with good decorative properties that does not require external finishing work.

(56) USSR Copyright Certificate No. 1458350, cl. C 04 V 33/00, 1987.

Report Institute NIIstroykeramika NJ 091.3.101-a Develop and implement compositions of low-shrink masses, as well as masses and glazes of low-temperature addition

(950-1000 ° С) as applied to high-speed production, including using raw materials from new deposits, pos. Kuchino Mosk. about. 1971, p. 28.

Claims (1)

The claims Ceramic mass for the manufacture of tiles, tiles, bricks and blocks, including clay, sea quartz sand and aegirine concentrate, characterized the fact that it contains these components in the following ratio, wt.%: Clay50 - 85 Sea quartz sand 5-20 Aegirine concentrate 10-45