FIELD: ceramic industry, in particular facing slab production.
SUBSTANCE: claimed ceramic mass contains (mass %): low-melting clay 30-40; waste from concentration of copper-nickel ores 50-55; nepheline concentrate 7-15. Said waste from concentration of copper-nickel ores contain (mass %): chlorite, hydrochlorite 55.8-58.32; serpentine minerals 11.3-14.65; talk 11.15-13.8; titanic magnetite, magnetite, chromite 7.18-8.0; mineral white 1.95-2.10; albite 2.0-2.3; quartz 1.98-2.21; pyroxenes 1.0-1.56; amphiboles 4.05-5.05. Abovementioned nepheline concentrate contains 81-85 mass % of nepheline and 5-10 mass % of feldspar. Facing slab produced from mass of invention has water absorption of 8.3-12.8 %, bending strength up to 25.9 MPa at sintering temperature of 1050-1100°C and linear heat setting of 0.1-1.4 %.
EFFECT: facing slab of decreased water absorption and linear heat setting and increased bending strength.
3 cl, 2 tbl
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SU1581710A1 |
