SU1346616A1 - Refractory concrete mix - Google Patents

Abstract

The invention relates to the composition of a refractory concrete mix and can be used in the manufacture of lining glass and chemical industry units, furnaces of ferrous and nonferrous metallurgy. The purpose of the invention is to increase the refractoriness and temperature of deformation under load. The refractory concrete mixture contains in the composition of the compound, May.%: Calcium chromite 40-80; calcium aluminate 20-60; the aggregate from the group: corundum, chromium-magnesium spinel, calcium chromite in the following ratio of components of the concrete mix: aggregate 50-95, indicated in the alter 5-50, and the aggregate has the following. fractional composition, may.%: fraction 1.25-5 mm 15-40; fraction1TS1 0.315-1.25 mm 20-60; fraction less than 0.315 mm is the rest. Concrete has refractoriness up to 2000 ° C and deformation temperature under load up to 1720 C. Table 1. tC (П е со 4 ОГ) о :)

Description

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The invention relates to the composition of refractory concrete mix and may find application in the manufacture of linings for glass and chemical industry, furnaces of ferrous and non-ferrous metallurgy.

The purpose of the invention is to increase the temperature of deformation under load and fire resistance.

Example 1. Corundum fraction 5-1.5 mm 40 wt.% 1.25-0.315 mm 20 wt.% And less than 0.315 mm 40 wt.% In the amount of 60 wt.% By weight of the mixture is mixed with 40 wt.% In the binder , add 8% of water, mix thoroughly.

PRI and, m e R 2. Corundum fraction 5-1.25 mm 37 wt.%, 1.25-0,315 mm 40 wt.% And less than 0,315-23 wt.% In the amount of 75 wt.% By weight of the mixture are mixed with 25 wt.% per well, add 6 wt.% water, mix thoroughly. From the resulting mass molded product.

PRI me R 3. Corundum fraction 5-1.5 mm 15 wt.%, 1.25-0.315 mm 60 wt.% And less than 0.315 mm 25 wt.% In the amount of 90 wt.% By weight of the mixture is mixed with 10 wt.% To the binder, add 4 wt.% Of water, mix thoroughly. From the resulting mass molded product.

PRI me R 4. Chrome-magnesium spinel fraction 5-1.25 mm 40 wt.%, 1.25-0.315 mm 20 wt.% And less than 0.315 mm 40 wt.% In the amount of 60 wt.% By weight of the mixture are mixed with 40 wt.% to the binder, add 8 wt.% of water, mix thoroughly. From the resulting mass molded product.

Example 5. Chrome-magnesium spinel fraction 5-1.25 mm 37 wt.%, 1.25-0.315 mm 40 wt.% And less than 0.315 mm 23 wt.% In the amount of 75 wt.% By weight of the mixture is mixed with 25 wt.% in the case of wetting, moisten with 6 wt.% of water, mix thoroughly. From the resulting mass molded product.

Example 6. Chrome-magnesium spinel fraction 5-1.25 mm 15 wt.%, 1.25-0.315 mm 60 wt.% And less than 0.315 mm 25 wt.% In the amount of 90 wt.% By weight is mixed with 10 wt.% In moist, wet 4 wt. water, mix thoroughly. From the resulting mass molded product.

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PRI me R 7. Calcium chromite fraction 5–1.25 mm 40 wt.%, 25– 0.315 mm 20 wt.% And less than 0.315 mm 40 wt.% B an amount of 60 wt.% By weight of the mixture is mixed with 40 wt.% To the binder, add 8 wt.% Of water, mix thoroughly. From the resulting mass molded product.

Example Calcium chromite fraction 5-1.25 mm 37 wt.%, 1.25- 0.315 mm 40 wt.% And less than 0.315 mm 23 wt.% In an amount of 75 wt.% By weight of the mixture is mixed with 25 wt.% In the binder, 6% by weight of water is added and mixed thoroughly. From the resulting mass molded product.

Example 9. Calcium chromite fraction 5-1.25 mm 15 wt.%, 1.25- 0.315 mm 60 wt.% And less than 0.315 mm 25 wt.% In an amount of 90 wt.% By weight of the mixture is mixed with 10 wt.% 4% by weight of water are added to the binder and mixed thoroughly. From the resulting mass molded product.

Example 10. Corundum fraction 5-1.25 mm 15 wt.%, 1.25-0.315 mm 35 wt.% And less than 0.315 mm 50 wt.% In the amount of 50 wt.% By weight of the mixture is mixed with 50 wt.% In 8% by weight of water are added and mixed thoroughly. From the mixture obtained molded product.

Example 11. Corundum fraction 5-1.25 mm 50 wt.% 1.25-0.315 mm 25 wt.% And less than 0.315 mm 25 wt.% In the amount of 95 wt.% By weight of the mixture is mixed with 5 wt.% In the binder 4% by weight of water is added and mixed thoroughly. From the mixture obtained molded product.

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Example 12. Chromomagnesium spinel fraction 5-1.25 mm 15 wt.%,

1.25-0.315 mm 35% by weight and less than 0.315 mm 50% by weight in an amount of 50% by weight of the mixture are mixed with 50% by weight; 8% by weight of water are added and mixed thoroughly. From the resulting mass molded product.

Example 13. Chrome-magnesium spinel fraction 5-1.25 mm 50 wt.%, 1.25-0.315 mm 25 wt.% And less

0.315 mm 25 mass% in the amount of 95 mass% of the mass of the mixture is mixed with 5 mass% of the substance, moistened with 4 mass% of water, and mixed thoroughly. From the mixture obtained molded product.

Example 14. Calcium chromite fraction 5-1.25 mm 15 wt.%, 1.25- 0.315 mm 35 wt.% And less than 0.315 mm 50 wt.% In an amount of 50 wt.% By weight of the mixture is mixed with 50 wt.% 8 wt.% of water is added to the binder, mixed thoroughly. From the resulting mass molded product.

Example 15. Calcium chromite fraction 5-1.25 mm 50 wt.%, 1.25- 0.315 mm 25 wt.% And less than 0.315 mm 25 wt.% In an amount of 95 wt.% By weight of the mixture are mixed and 5 wt.% 4% by weight of water is thoroughly mixed into the binder. From the resulting mass molded product.

Example 16 (known) 20 wt.% Chromite fractions 3-1 mm 22 wt.% Magnesite chromite fractions 2-0 mm, 15 wt.% Magnesite fractions less than 0.063 mm, 10 wt.% Chromite fractions less than 0.063 mm are mixed with 13 wt.% Sodium polyphosphate and 15 wt.% zirconium fraction of 0.063 mm The mass is ready for use.

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The properties of the refractory concrete mix and the compositions in the shear are shown in the table.

From the table it follows that the proposed concrete has an advantage compared with the known in terms of refractoriness and deformation temperature under load.

Claims (1)

Invention Formula Refractory concrete mixture, comprising a filler from the group: corundum, chrome-magnesium spinel, calcium chromite and sticking, characterized in that, in order to increase the deformation temperature under load and refractoriness, it contains, in wt. Composition, wt.%: Chromite calcium 40-80; Calcium aluminate 20-60, and aggregate of fractions 1.25-5.0, 0.315-1.25 and less than 0.315 mm in the following ratio of components, wt.%: aggregate 50-95; specified in the hanging 5-50, and the placeholder has the following 25 fractional composition, wt.%: Fractions 1,25-5 mm15-40 Fraction 0,315-1,25 mm 20-60 Fraction less than 0,315 mm Else 20 WITH with about P oh oh Ltd about in about 00 about cho ABOUT - oh oh  cho about about about emergency Ltd about 00 g about about oh oh about rj about v CSJ ABOUT about - emergency m vO about m in 1L oh oh about 1L about cho about 00 -lo ate 00 emergency about 1L 1L about 00 1L about cho about Jcho