它由电熔镁砂、低铁烧结镁砂和电熔铁铝尖晶石制成的烧结镁铁尖晶石砖，这种人工合成的铁铝尖晶石是RHI奥镁公司的专利。
The quality is a burnt magnesia spinel brick made from fused magnesia, low iron sintered magnesia and fused hercynite. This synthetic hercynite is a patent by RHI Refractories.
天然镁砂尖晶石极少发现，工业上应用的铝镁尖晶石全部都是人工合成的。
Natural magnesia spinel rarely found that magnesium aluminum spinel in industrial application are all synthetic.
天然镁砂尖晶石极少发现，工业上应用的铝镁尖晶石全部都是人工合成的。
Natural magnesia spinel rarely found that magnesium aluminum spinel in industrial application are all synthetic.
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