Process for the regeneration of used foundry sands
    1.
    发明授权
    Process for the regeneration of used foundry sands 失效
    重新使用基金会的过程

    公开(公告)号:US5233765A

    公开(公告)日:1993-08-10

    申请号:US698719

    申请日:1991-05-10

    IPC分类号: B22C5/00 B22C5/18

    CPC分类号: B22C5/18

    摘要: Although an elevated process temperature is used for reprocessing used sands having high clay-like portions, the upper limit thereof is fixed such that chamottization of the sand and combustion of organic binder components do not occur. The air-gas mixture is circulated in a drier and a mechanical reprocessing step arranged downstream thereof and heated to process temperature by utilizing thermal energy obtained by branching off and burning part of the air-gas mixture from the circulation.

    摘要翻译: 虽然提高的工艺温度用于对具有高粘土状部分的旧砂进行后处理,其上限是固定的,使得不会发生沙的翻砂和有机粘合剂组分的燃烧。 空气 - 气体混合物在干燥器和布置在其下游的机械再处理步骤中循环,并通过利用通过从循环分支和燃烧部分气 - 气混合物而获得的热能将其加热至加工温度。

    Arrangement for dry reconditioning of used foundry sands
    2.
    发明授权
    Arrangement for dry reconditioning of used foundry sands 失效
    二手铸造砂的干式修复安排

    公开(公告)号:US5421462A

    公开(公告)日:1995-06-06

    申请号:US39308

    申请日:1993-07-12

    CPC分类号: B22C5/10

    摘要: An arrangement for the dry reconditioning of used foundry sands in which used sand is fluidized with air or an air/gas mixture and flung against a precipitator to separate and remove substances covering sand particles. The precipitator has several planar baffle elements arranged in concentric circles around a conical deflector. A jet of used sand/air directed toward the deflector expands radially outwardly toward the baffle elements so that the jet is decelerated several times by the deflector and the baffle elements and, in a confined space, split into individual streams and swirled to provide heavy mechanical friction between sand particles and between sand particles and the baffle elements.

    摘要翻译: PCT No.PCT / EP92 / 01858 Sec。 371日期:1993年7月12日 102(e)日期1993年7月12日PCT提交1992年8月13日PCT公布。 公开号WO93 / 03872 日期1993年3月4日。对于使用砂子的空气或空气/气体混合物流化的二手砂轮进行干式修复的布置,并且用于分离和去除覆盖砂粒的物质。 除尘器具有围绕圆锥形偏转器布置成同心圆的多个平面挡板元件。 指向偏转器的二次砂/空气射流朝向挡板元件径向向外扩张,使得射流被偏转器和挡板元件减速几次,并且在密闭空间中分裂成单个流并旋转以提供重力机械 砂粒与砂粒与挡板元件之间的摩擦。