SU1087485A1 - Raw mix for making silica brick - Google Patents

Abstract

RAW MIXTURE FOR THE MANUFACTURE OF SILICATE BRICK, including lime, granodiorite sifting and finely dispersed additive, characterized in that, in order to increase the adhesion with the masonry mortar, it contains electrofilters, as well as sharpening materials. %: Lime8-10 Dust of electrostatic precipitators during smelting of ferrosilicochrome 2-10 Granodiorite (2 siftings Else (/)

Description

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The invention relates to the building materials industry and can be used in the manufacture of silicate bricks. The known raw material mixture for the manufacture of silicate bricks, including, by weight parts: lime 120, sand 1493, dust, ferrosilicon, calcium silicate, or silicon, 7-50 1J. Closest to the proposed technical essence and the achieved result is the raw material mixture for the manufacture of silicate bricks, including, wt.%: Ground granodiorite 15-30; granodiorite screening 6080; lime - the rest of L. A disadvantage of the known raw materials for the manufacture of silicate bricks is the low strength of adhesion to the masonry mortar. The aim of the invention is to increase the strength of adhesion to the masonry mortar. The goal is achieved by the fact that the raw mix for the manufacture of silicate brick, including lime, granodiorite sifting and a fine dispersant, contains as the last five electrostatic precipitators in the smelting of ferrosilicochrome in the following ratio of components, wt.%: Lime8-10 Dust in the electrostatic filters in the smelting of ferrosilicochrome 2-10 Granodiorite screening Other Dust contains up to 90% of the fraction less than 0.063 mm. The bulk density of the dust is 0.1 0.22 g / cm, the chemical composition of the dust is as follows,%: SiO / O-3; MgO 2-7; 1.5-3; G 2-4; FeO 1-3; flying 2.2-2.6; S - the rest. For the preparation of mixtures, lime with an activity of 80%, ground granodioride with a specific surface of 2000 cm / h, and also granodiorite screenings of the following composition are used: 2.5 260; 1.25 - 1.40; 0.63 - 150; 0.315 125; 0.14 - 90; pass. - 235; MK 2.55. Example. Compositions of the mixture with an activity of 8% and a moisture content of 6% are prepared with different content of electrostatic dust, as well as without it with the addition of ground granodiorite. Samples 980 and a height of 60 mm are molded by pressing at a pressure of 200 kgf / cm. Autoclave treatment is carried out at 8 MPa for 8 hours. Studies use masonry mortar with the following ratio of componeites, wt.%: Portland cement MZOO Korki Plant 1; crumbling diis ferrochrome slag of Chel Binsk Electrometallurgical Plant 1; lime-pushonka 0,22; quartz sand Voznesenovskogo field 7,7; water 1-1.45. Immersion of a cone of 8 cm. Samples-twos are made as follows. At the end of the sample cylinder is placed the same amount of freshly prepared solution, the second cylinder is installed on the solution. The thickness of the mortar is 12 mm. Made samples set in a vertical position, first in a humid chamber, and then outdoors. Samples were tested for axial stretching after 1 and 3 months. The compositions of known and proposed mixtures and yus properties are shown in the table. Thus, the proposed mixture has a higher bond strength with masonry mortar.

Claims (2)

RAW MATERIAL MIX FOR PRODUCTS - SILICATE BRICK, including lime, granodiorite screening and finely dispersed additive, characterized in that, in order to increase the adhesion strength with masonry mortar, it contains as a finely dispersed additive electrostatic dust during smelting of ferrosilicon chromium in the following ratio of components, wt. £ : Lime Dust of electrostatic precipitators during smelting of ferrosilicochrome Gr anodiorite screening 8-10 2-10 Rest