Process for lowering the sulfur content of vanadium-carbon materials
used as additions to steel
    2.
    发明授权
    Process for lowering the sulfur content of vanadium-carbon materials used as additions to steel 失效
    降低用作钢铁添加剂的钒 - 碳材料的硫含量的方法

    公开(公告)号:US4167409A

    公开(公告)日:1979-09-11

    申请号:US941403

    申请日:1978-09-11

    CPC classification number: C22C35/00 C21C7/0006

    Abstract: Vanadium-carbon materials for use as additions to steel have been produced by the vacuum furnacing of a mixture of vanadium oxide and carbon. To lower the sulfur content of such material, which derives essentially from the sulfur content of the carbon in the mixture, a relatively small quantity of silicon, silica or tin is included in the mixture prior to vacuum furnacing.

    Abstract translation: 通过真空加热氧化钒和碳的混合物生产用作钢的添加剂的钒 - 碳材料。 为了降低这种材料的硫含量,其主要源自混合物中的碳的硫含量,在真空炉中之前,混合物中包含相对少量的硅,二氧化硅或锡。

    Process for producing a vanadium silicon alloy
    3.
    发明授权
    Process for producing a vanadium silicon alloy 失效
    钒硅合金的制造方法

    公开(公告)号:US4353744A

    公开(公告)日:1982-10-12

    申请号:US278960

    申请日:1981-06-30

    CPC classification number: C22C27/025

    Abstract: A vanadium-silicon alloy having a low carbon and oxygen content is produced by vacuum furnacing a mixture of V.sub.2 O.sub.3, carbon and silicon metal in at least the stoichiometric amounts necessary to reduce V.sub.2 O.sub.3 and form V.sub.2 Si while preventing vanadium from combining with carbon and oxygen.

    Abstract translation: 通过以至少减少V 2 O 3所需的化学计量的量来真空加热V 2 O 3,碳和硅金属的混合物,形成V2Si,同时防止钒与碳和氧结合,来生产具有低碳和氧含量的钒 - 硅合金。

    Preparation of low-carbon vanadium nitride
    4.
    发明授权
    Preparation of low-carbon vanadium nitride 失效
    制备低碳氮化钒

    公开(公告)号:US4562057A

    公开(公告)日:1985-12-31

    申请号:US594664

    申请日:1984-03-29

    CPC classification number: C01B21/0828 C01P2006/80

    Abstract: A low-carbon vanadium nitride is prepared in a furnace at an elevated temperature of about 1400.degree. C. under nitrogen atmosphere from a feed material containing a mixture of vanadium oxynitride and carbon. The vanadium oxynitride is prepared by the partial ammonia reduction of a vanadium-containing oxidic compound such as ammonium metavanadate (NH.sub.4 VO.sub.3) or oxides of vanadium such as V.sub.2 O.sub.3 and V.sub.2 O.sub.5.

    Abstract translation: 在氮气氛下,在含有氮氧化钒和碳的混合物的进料中,在炉中在约1400℃的高温下制备低碳氮化钒。 钒氮氧化物通过含钒氧化化合物如偏钒酸铵(NH4VO3)或钒氧化物如V2O3和V2O5的部分氨还原制备。

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