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    Process for the preparation of aluminium trichloride and silicon dioxide by chlorination of alumina with silicon tetrachloride
    3.
    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。

    Method for improving the strength and impermeability of soils and engineering structures
    5.
    发明授权
    Method for improving the strength and impermeability of soils and engineering structures 失效
    提高土壤和工程结构强度和不渗透性的方法

    公开(公告)号：US4988238A

    公开(公告)日：1991-01-29

    申请号：US429945

    申请日：1989-10-31

    申请人： Tamas Szekely ,  Gabor Nagy ,  Andras Danko ,  Janos Szepvolgyi ,  Andras Gal ,  Oszkar Libor

    发明人： Tamas Szekely ,  Gabor Nagy ,  Andras Danko ,  Janos Szepvolgyi ,  Andras Gal ,  Oszkar Libor

    IPC分类号： C09K17/12 ,  C09K17/46

    CPC分类号： C09K17/12 ,  C09K17/46

    摘要： A method is disclosed for improving the strength and impermeability of soils or engineering structures, which comprises the steps of:(a) applying to the site of the soil or of the engineering structure, an alkaline water glass solution comprising water glass in an amount of 15 to 40% by weight, calculated as dry substance;(b) allowing a time period to pass sufficient to permit the alkali present in the water glass solution to move by diffusion;(c) applying to the same site as in step (a), a silicic acid sol comprising SiO.sub.2 in an amount of 5 to 50% by weight calculated as dry substance, and an organic dispersion medium in which 10 to 100% by volume of the dispersion medium consists of a water-miscible organic solvent capable of reacting with the alkali content of the water glass solution applied during step (a), thereby gellifying the water glass so that the reaction product of the water-miscible organic solvent and the alkali content of the water glass is trapped within the gelled water glass; and(d) allowing a time period to pass sufficient to permit the respective organic dispersion medium present in the silicic acid sol to move by diffusion, so that gellification of the water glass takes place evenly when mixing of the water glass solution applied during step (a) and the silicic acid sol applied during step (c) to the soils or to the engineering structures takes place to effect a plasticizing effect on the resulting water glass gel.

    摘要翻译： 公开了一种用于改善土壤或工程结构的强度和不渗透性的方法，其包括以下步骤：（a）向土壤或工程结构的位置施加包含水玻璃的碱性水玻璃溶液，其量为 15〜40重量％，以干物质计算; （b）允许时间段通过足以允许水玻璃溶液中存在的碱通过扩散而移动; （c）在与步骤（a）相同的部位施用含有按干物质计5〜50重量％SiO 2的硅酸溶胶，以及有机分散介质，其中10〜100体积％ 分散介质由与步骤（a）中施加的水玻璃溶液的碱含量反应的水混溶性有机溶剂组成，从而将水玻璃凝胶化，使水溶性有机溶剂与碱的反应产物 水玻璃的含量被凝固在凝胶水玻璃内; 和（d）允许一段时间通过足以使存在于硅酸溶胶中的各有机分散介质通过扩散移动，使得在步骤期间施加的水玻璃溶液的混合时水玻璃的胶凝化发生均匀（ a）和在步骤（c）中施加的硅酸溶胶施加到土壤或工程结构上以对所得水玻璃凝胶进行增塑作用。