FIELD: chemistry.
SUBSTANCE: invention relates to production of construction materials and can be used in wall articles and building ceramics, particularly in making bricks, stone, roof tiles, tiles etc. The crude mixture of making ceramic articles includes a sludge part of wastes from iron ore beneficiation, clay material and vanadium oxide, with the following ratio of components, wt %: sludge part of wastes from iron-ore beneficiation 71-78; clay material 20-25; vanadium oxide 2-5.
EFFECT: high ultimate compression strength, high frost resistance and low content of natural clay material in the mixture.
1 ex, 2 tbl
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