RU2578233C1 - Mixture for producing black marbilite based on crystalline shale - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: invention relates to production of decorative-facing materials, particularly marblita black colour. Technical result is achieved by fact that charge for producing marblita black colour is crystalline shale, soda, chalk at following component ratio, wt %: crystalline shale 80.0, soda - 17.5, chalk 2.5.

EFFECT: technical result is reduction of power consumption and high quality of marblita black colour.

1 cl, 2 tbl, 1 ex

Description

The invention relates to the field of production of decorative facing materials, in particular black marble.

Marble is known in black [Budov V.M., Sarkisov P.D. Production of building and technical glass: Textbook. for vocational schools. 4th ed., Rev. and add. - M .: Higher school, 1991. - 319 p.], Which includes 4.8% of manganese oxide as a coloring component in the composition of the charge.

The disadvantage of this composition of the charge for black marble is the use of expensive and scarce manganese oxide in the amount of 4.8%, which significantly increases the cost of the final product.

The closest solution to the proposed method according to the technical nature and the achieved result is a mixture for producing black marble [Shalunenko NI, Korolyuk T.A. The use of sediment of urban drainage facilities for the production of glass materials for construction purposes // Vestnik MGSU. 2010. No3. S. 69-72], including sewage sludge, soda, chalk and technical alumina.

The disadvantage of this composition of the mixture to obtain black marble is the high cooking temperature of this mixture, which increases the cost of the product due to the high energy consumption and the relatively low quality of the products, which reduces its competitiveness.

The technical result of the proposed invention is to reduce energy consumption in the production of black marble and increase its quality.

The technical result is achieved by the fact that crystalline schists, soda and chalk are introduced into the mixture in the following ratio of components (wt.%):

Crystal shales 80.0 Soda 17.5 a piece of chalk 2,5

Crystal shales in their composition have a significant amount of iron oxides, which color marblite in black and significantly reduce the cooking temperature. Also, crystalline shales have in their composition more than 9% alumina, which makes it possible to exclude a scarce and expensive component — technical alumina — from the mixture.

A comparative analysis of the quality indicators and cooking conditions of black marblite known and proposed charge are presented in table 1.

The optimal composition of the charges, which are presented in table 2.

The analysis of the known compositions of the blends to obtain black marblite allows us to conclude that the claimed invention meets the criterion of "novelty."

Example:

As starting materials, crystalline schists of the following chemical composition (mass%) were taken: SiO ₂ —52.92; Al ₂ O ₃ - 9.02; TiO ₂ - 1.48; FeO - 5.01; Fe ₂ O ₃ - 4.99; CaO - 6.08; MgO - 2.72; Na ₂ O - 0.28; K ₂ O - 2.50; P.P.P. - 15.00, soda according to GOST 10689 and chalk according to TU 21-41-69 were also used.

The initial components were crushed and dispersed on sieves, the composition was prepared per 100 kg of charge. By averaging, the components of the mixture were mixed in a paddle laboratory mixer for 15 minutes.

Marble black was cooked at the temperatures indicated in table 2, in a furnace with silicone heaters with an exposure time of 1.5 hours, followed by firing at a temperature of 558 ° C. Bending strength, thermal resistance and chemical resistance were determined by standard methods.

Claims (1)

The mixture for producing black marblite, including soda and chalk, characterized in that the composition of the mixture includes crystalline schists in the following ratio of components, wt. %:
Crystal shales 80.0 Soda 17.5 a piece of chalk 2,5