A kind of high-grade refractories, is made from the imported high quality aluminium oxido by melting in the electric arc furnace and cooling. It has the advantage of high purity and bulk density, low porosity, high tempera-ture resistance and acid corrosion resistance, thus the volume stability and thermal shock resistance can beimproved.It is the high quality raw material to produce high-grade refractories,abrasives,polishing and spraying materials,carrier of catalyst and special ceramics.etc.
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