This paper presents the alkali and sulphur vapour corrosion resistance of aluminosilicate refractories under industrial conditions. Aluminosilicate refractory samples with Al2O3 contents ranging 42–90 mass‑% were exposed for 8 months to the corrosive atmosphere in the secondary combustion chamber (gas temperature approx. 950 °C) of a hazardous waste incineration facility.
Cost-effective mullite body was prepared by reaction sintering of natural bauxite, fly ash, a by-product in thermal power plants and precipitated silica.
High alumina bricks with superior RUL (refractoriness under load), high thermal shock resistance and high volume stability have been developed as an alternate refractory material to imported semi-silica bricks to use in sprung arch type roof of rotary hearth furnace of the wheel and axle plant of Durgapur Steel Plant/IN.