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    • 3. 发明授权
    • Briquette as an additive for metallurgic purposes comprising
silicon-containing residues, and process for its production
    • 作为冶金用途的添加剂,包含含硅残渣的团块及其生产方法
    • US5993508A
    • 1999-11-30
    • US786699
    • 1997-01-23
    • Lutz Stephan
    • Lutz Stephan
    • C21C1/08C01F7/12C21B3/02C21B5/02C21C5/36C21C7/00C22B1/24C22B1/242C22B1/244C22C33/08
    • C21B3/02C21B5/02C21C7/0006C21C2005/363Y02P10/212
    • Silicon-containing residues, as they accumulate especially during the synthesis of organosilanes out of metallic silicon, and especially methyl chloride, are processed according to the invention to briquettes, being additives for the quality adjustment of cast iron being produced in a cupola furnace in order to avoid either costly regeneration for the recovering of the valuable components or the total dumping of said silicon-containing residues. Besides the silicon-containing residue the briquettes contain 1-10 percent by weight of cardboard fiber, 5-40 percent by weight of hydraulic cement and 0-20 percent by weight of additional additives having influence on the quality of the cast iron. The cement- and cardboard fiber-containing briquettes are mechanically and thermally sufficiently stable with respect to the operation of the melting furnace. The yielding rate of the inserted small-sized silicon in the cast iron is about 85% and reaches thereby the same range of lumpy ferrosilicon.
    • 含硅残渣尤其在合成有机硅烷期间积聚出来的金属硅特别是氯甲烷根据本发明被加工成团块,它是用于在冲天炉中按顺序生产的铸铁质量调整的添加剂 以避免用于回收有价值组分的昂贵的再生或所述含硅残渣的总倾倒。 除了含硅残渣之外,压块含有1-10重量%的纸板纤维,5-40重量%的水硬水泥和0-20重量%的额外添加剂,对铸铁质量有影响。 相对于熔化炉的操作,含水泥和纸板纤维的团块在机械和热学上足够稳定。 铸铁中插入的小尺寸硅的屈服率约为85%,从而达到同样范围的块状硅铁。