RU2130434C1 - Blend for preparing materials and products from black stone - Google Patents

Abstract

FIELD: construction, and architectural and finishing work. SUBSTANCE: blend for preparing black stone or glass ceramic materials comprises (wt %): dolomite 10.0-40.0; calcium carbonate (chalk, limestone, marble), 28.0-60.0; and natural phosphate benefication waste, 25.0-60.0. Blend further comprises alkali metal salt in amount of 0.01-6.0 wt %. EFFECT: materials of intensive black color with high mechanical and physical- chemical properties. 3 cl, 1 tbl

Description

 The invention relates to the production of molded and molded and crystallized stone and glass products and materials that can be used for technical purposes, construction and finishing works.

 Known compositions of the melts and methods for manufacturing from them colorless or intensely colored cast or molded and crystallized stone or glass crystal materials.

 Compositions of mixtures for cooking intensely colored melts and the manufacture of crystallized stone products or materials from them are also known.

 Known, for example, a mixture for cooking a melt from a mixture of basalt and hematite and casting artificial stone from it (Japanese patent N 52-45723, application. 30.09.64 C 04 B 35/18). Known mixture of a mixture of basalt and hematite contains a large amount of iron oxides. The melt from this charge crystallizes into a stone material dark with brown shades and does not provide an intensely black, uniformly colored stone.

Known mixture for the production of decorative stone (USSR copyright certificate N 1143710, decl. 28.12.82 C 03 C 10/00). From this mixture containing a large amount of iron and titanium oxides, a melt is obtained for casting and crystallizing stone materials and products of dark green and dark brown colors of various tones. The mixture consists of a mixture of feldspar mineral raw materials, egerin concentrate, titanium-containing mineral and borax in the following ratio of components, wt.%
Feldspar raw materials - 18.5 - 70
Egerin concentrate - 0.5 - 60.0
Titanium-containing mineral - 20.0 - 60.0
Borax - 0.5 - 15.0
This charge is the closest to this application and can be considered as a prototype.

 Stone materials made from this mixture are not painted intensely black. The coloring components of the mixture contain oxides of iron and titanium, the change in the valency of which during the manufacture of stone changes the intensity and tonality of the color of the material.

 The aim of the invention is the manufacture of stone or glass crystalline materials of intense black color with high mechanical and physico-chemical properties.

This is achieved by the fact that the mixture for the manufacture of black stone or glass crystalline materials, including dolomite, calcium carbonate (chalk, limestone, marble), quartz sand, and additionally contains waste enrichment of natural phosphates in the following ratio of these components, wt.%:
Dolomite - 10.0 - 40.0
Calcium carbonate (chalk, limestone, marble) - 28.0 - 60.0
Quartz sand - 0.01 - 20.0
Natural phosphate enrichment waste - 25.0 - 60.0
Additionally, this mixture may contain an alkali metal salt in an amount of 0.01 - 6.0 wt.%.

The mixture in the composition of this position corresponds to the composition of the mixture adopted as a prototype (USSR copyright certificate N 1143710), and contains components, wt.%:
Egerin concentrate - 30
Feldspar raw materials - 30
Titanium Mineral - 30
Borax - 10
From the presented data it is seen that the use of the mixture according to this solution provides a stable intense black color of the obtained material, while the use of the composition of the charge of the prototype does not give such a color.

The stone and glass-crystalline materials obtained by this composition (items 1 - 7 of table 1) have a compressive strength of 850 - 1550 kg / cm ² , a bending strength of 220 - 340 kg / cm ² , which makes it possible to use this material in construction as a finish.

Claims (1)

1. The mixture for the manufacture of stone and glass crystalline materials and products of black color by casting or molding from melts, followed by crystallization, including dolomite, calcium carbonate, for example, chalk, limestone or marble, quartz sand, characterized in that it additionally contains waste enrichment of natural phosphates in the following ratio of components, wt.%:
Dolomite - 10.0-40.0
Calcium carbonate, for example, chalk, limestone or marble - 28.0-60.0
Quartz sand - 0.01-20.0
Natural phosphate enrichment waste - 25.0-60.0
2. The mixture according to claim 1, characterized in that it further comprises an alkali metal salt in an amount of 0.01-6.0 wt.%.

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