Abstract
Studies have shown that burnt rocks and ash-and-slag materials, as corrective additives, improve the properties of poor-quality clay raw materials. The possibility of using this technogenic raw material in ceramics technology for the manufacture of ceramic products for various purposes is shown. The use of burnt rocks and ash-and-slag materials improves the sintering of the shards, intensifies the crystallization of mullite-like compounds, which has a positive effect on the physical and mechanical properties of ceramic products: strength and frost resistance increase, shrinkage deformations and water absorption decrease. The use of burnt rocks and ash-and-slag materials makes it possible to obtain refractory products on loam instead of refractory clays. The results of laboratory studies are confirmed by tests of pilot batches of ceramic bricks and tiles, thin-walled ceramic products (roof tiles and artistic ceramics).
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