Abstract
Some concentrated (CrO3+MgO) aqua were added into zircon powder in order to improve corrosive resistance of zircon brick by both promoting the sintering of zircon and by strengthening the structure after firing at 1500°C and 1600°C in air or reduction atmosphere. Their effects on sintering and dissociation of zircon, and corrosive resistance of specimens after firing were investigated.The results were as follows.Concentrated (CrO3+MgO) aqua promoted sintering of zircon without dissociation in air atmosphere, and it promoted remarkably with slight dissociation in reduction atmosphere.And, it improved more the corrosive resistance of zircon brick, especially on slag penetration, than Cr2O3.
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