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7 条记录 (耗时 0.008 秒)

    Process for the preparation of aluminium trichloride and silicon dioxide by chlorination of alumina with silicon tetrachloride
    2.
    发明授权
    Process for the preparation of aluminium trichloride and silicon dioxide by chlorination of alumina with silicon tetrachloride 失效
    通过用四氯化硅氧化氧化铝制备三氯化铝和二氧化硅的方法

    公开(公告)号：US4416862A

    公开(公告)日：1983-11-22

    申请号：US340997

    申请日：1982-01-20

    申请人： Dinko Gencev ,  Katalin Szabo nee Mogyorosi ,  Szilard Riederauer ,  Janos Szepvolgyi

    发明人： Dinko Gencev ,  Katalin Szabo nee Mogyorosi ,  Szilard Riederauer ,  Janos Szepvolgyi

    IPC分类号： C01B33/18 ,  C01F7/60 ,  C01F7/56

    CPC分类号： C01B33/181 ,  C01F7/60

    摘要： The invention relates to a method for utilizing silicon tetrachloride formed as a by-product of the chlorination of aluminium- and silicon-containing minerals. More particularly, the invention relates to a process for the preparation of aluminium trichloride and silicon dioxide by chlorination of alumina with silicon tetrachloride. According to the invention alumina or a material essentially consisting of alumina is reacted with silicon tetrachloride as a single chlorinating agent at a temperature exceeding 400.degree. C., unreacted silicon tetrachloride is separated from the aluminium trichloride formed and is recycled into the chlorination step, silicon dioxide is isolated from the solid residue essentially consisting of the unreacted alumina and silicon dioxide, unreacted alumina is recycled into the chlorination step and aluminium trichlorine obtained is continuously eliminated.

    摘要翻译： 本发明涉及一种利用四氯化硅作为含铝和含硅矿物的氯化副产物形成的方法。 更具体地说，本发明涉及通过用四氯化硅氧化氧化铝来制备三氯化铝和二氧化硅的方法。 根据本发明，在超过400℃的温度下，将氧化铝或基本上由氧化铝组成的材料与四氯化硅作为单一氯化剂反应，将未反应的四氯化硅与形成的三氯化铝分离，并循环到氯化步骤中，硅 从基本上由未反应的氧化铝和二氧化硅组成的固体残余物中分离二氧化物，将未反应的氧化铝再循环到氯化步骤中，并且连续消除获得的三氯化铝。

    Process for preparing silicon-base complex ferrous alloys
    6.
    发明授权
    Process for preparing silicon-base complex ferrous alloys 失效
    制备硅基络合铁合金的工艺

    公开(公告)号：US4576637A

    公开(公告)日：1986-03-18

    申请号：US651849

    申请日：1984-09-18

    申请人： Istvan Tamas ,  Szilard Riederauer ,  Janos Kovacs

    发明人： Istvan Tamas ,  Szilard Riederauer ,  Janos Kovacs

    IPC分类号： C22C33/04 ,  C21C5/52 ,  C22B1/24 ,  C22C33/00 ,  C22B4/00

    CPC分类号： C22C33/003 ,  C21C5/5264 ,  C22B1/2406 ,  Y02P10/216

    摘要： A process for the continuous preparation of silicon-base complex ferrous alloys from cheap raw materials by preparing a charge with a high electric resistance and reducing the same in an electric arc furnace. A charge is assembled which contains the total amount of carbon in a 0.82 to 0.99-fold quantity of that required to reduce all oxides of the charge to elements and achieving this carbon content by preparing pellets which, in addition to the binding material, contain(a) as oxide to be reduced in an amount of at least 50% by weight such oxides of only base-forming or only amphoteric or only acid-forming elements which form with each other compounds or eutectics melting above 1600.degree. C., and(b) a carbonaceous reducing agent and/or carbides in such an amount that the quantity of carbon is either 1.05 to 1.35 times higher than required to transform the oxides of the pellet to the carbides or 0.66 to 0.02-fold of the quantity required to reduce the oxides of the pellet to metallic elements, and assembling the charge(.alpha.) from pellets containing an excess of carbon and/or from lumpy carbides and(.beta.) from carbon-deficient pellets or from a lumpy oxide of a base-forming or amphoteric or acid-forming element and(.gamma.) from lumpy carbon carriers, and optionally(.delta.) from an iron additive, in the absence of boron trioxide.

    摘要翻译： 一种通过在电弧炉中制备具有高电阻并在电弧炉中还原的方法从廉价原料连续制备硅基复合铁合金的方法。 组装电荷，其含有将元素中的所有电荷的所有氧化物还原并达到该碳含量所需的0.82至0.99倍的总量，通过制备除了粘结材料外还含有 a）氧化物以至少50重量％的量还原这样的氧化物，其仅形成成形或仅两性或仅有酸形成元素，彼此形成化合物或熔点高于1600℃的共晶体，和（ b）碳质还原剂和/或碳化物的量使得碳的量比将颗粒的氧化物转化为碳化物所需的量高1.05至1.35倍，或减少所需的量的0.66至0.02倍 颗粒的氧化物与金属元素组合，并且从含有过量碳和/或块状碳化物的颗粒和（β）从含碳缺陷的颗粒或由形成碱或两性的块状氧化物组装电荷（α） 或来自块状碳载体的（γ）和任选的来自铁添加剂的（δ），在不存在三氧化硼的情况下。