Queensland Magnesia has one of the few high purity cryptocrystalline magnesite deposits available around the world. The sintered and fused magnesia produced from this deposit has traditionally been used in refractories for steelmaking applications due to its highly refractory secondary phases and the ability to achieve high density and large periclase crystal size during the sintering and fusion processes. The objective of this study has been to further develop the understanding of the relationship between the characteristics of the ore body and that of the calcining, sintering and fusion process in order to produce a new, higher purity range of magnesias for use in high purity basic monolithics and ceramically bonded refractory brick.
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