FIELD: chemistry.
SUBSTANCE: invention relates to production of construction materials. The crude mixture for making silicate bricks with plasma-molten brick face, containing quartz sand, ground unslaked lime, contains galvanic sludge which is a product of treatment and neutralisation of waste water from electroplating facilities, characterised by the following average chemical composition, wt %: SiO2 10.78; Al2O3 2.73; Fe2O3 12.9; FeO 0.33; TiO2 0.21; Cr2O3 1.08; NiO 0.46; CuO 7.09; ZnO 1.42; CaO 27.85; MgO 2.12; SO3 1.75; K2O 0.88; Na2O 2.18; LOI 28.22, with the following ratio of components, wt %: quartz sand 55-67, ground unslaked lime 10-15, said galvanic sludge 23-30.
EFFECT: high frost resistance.
1 tbl
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| CRUDE MIXTURE FOR MAKING SILICATE BRICKS | 2011 |
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