Apparatus for preparation of a sprayable precipitated silicic acid
suspension
    3.
    发明授权
    Apparatus for preparation of a sprayable precipitated silicic acid suspension 失效
    用于制备可喷雾的沉淀硅酸悬浮液的装置

    公开(公告)号:US4238322A

    公开(公告)日:1980-12-09

    申请号:US870544

    申请日:1978-01-18

    IPC分类号: C01B33/141 C09C1/30 B03B1/00

    摘要: A silicic acid filter cake and suspension agent are fed to a container equipped with a stirrer having a peripheral speed of about 20-30 m/sec. The ratio of container diameter to stirrer diameter is about 3:1. The ratio of container diameter to level of filling is a maximum of about 1:2. The container contains at least about 1.5 to about 2 kg of silicic acid suspension, for each 1 kg of silicic acid filter cake which is added to the container. The contents of the container is mixed while maintaining a pH of at most about 4. A portion of the resulting silicic acid suspension is drawn off from the zone of highest turbulence in the container. An apparatus for carrying out the process is provided.

    摘要翻译: 将硅酸滤饼和悬浮剂进料到装备有具有约20-30m /秒的圆周速度的搅拌器的容器中。 容器直径与搅拌器直径的比例约为3:1。 容器直径与填充水平之比最大为1:2。 对于加入到容器中的每1kg硅酸滤饼,该容器含有至少约1.5至约2kg的硅酸悬浮液。 将容器的内容物混合,同时保持至多约4的pH。所得硅酸悬浮液的一部分从容器中最高湍流区域排出。 提供了一种用于执行该过程的装置。

    Process for preparation of a sprayable precipitated silicic acid
suspension
    4.
    发明授权
    Process for preparation of a sprayable precipitated silicic acid suspension 失效
    制备可喷雾沉淀硅酸悬浮液的方法

    公开(公告)号:US4094771A

    公开(公告)日:1978-06-13

    申请号:US648848

    申请日:1976-01-13

    IPC分类号: C01B33/141 C09C1/30 B03B1/00

    摘要: A silicic acid filter cake and suspension agent are fed to a container equipped with a stirrer having a peripheral speed of about 20-30 m/sec. The ratio of container diameter to stirrer diameter is about 3:1. The ratio of container diameter to level of filling is at most about 1:2. The container contains at least about 1.5 to about 2 kg of silicic acid suspension, for each 1 kg of silicic acid filter cake which is added to the container. The contents of the container is mixed while maintaining a pH of at most about 4. A portion of the resulting silicic acid suspension is drawn off from the zone of highest turbulence in the container.

    摘要翻译: 将硅酸滤饼和悬浮剂进料到装备有具有约20-30m /秒的圆周速度的搅拌器的容器中。 容器直径与搅拌器直径的比例约为3:1。 容器直径与填充水平之比最多为1:2。 对于加入到容器中的每1kg硅酸滤饼,该容器含有至少约1.5至约2kg的硅酸悬浮液。 将容器的内容物混合,同时保持至多约4的pH。所得硅酸悬浮液的一部分从容器中最高湍流区域排出。

    Cutting-tool mounting for rotary excavating head
    5.
    发明授权
    Cutting-tool mounting for rotary excavating head 失效
    用于旋转挖掘头的切割工具安装

    公开(公告)号:US4609227A

    公开(公告)日:1986-09-02

    申请号:US550921

    申请日:1983-11-10

    摘要: A cutting tool or pick on a rotary excavating head has a substantially flat body with leading and trailing flanks, one of these flanks having an arcuate recess or projection matingly engaged by a complementarily curved formation on an adjacent wall of a pocket of a tool holder defining therewith a rotary joint about which the body of the pick is swingable upon insertion of its shank into the pocket. A screw clamp inside the pocket wedges the pick firmly in a position which in one embodiment is adjustable by the provision of a toothed and an indented surface of the rotary joint enabling selective interfitting. The pick may be further braced by one or more additional screws threaded into it and bearing upon other pocket walls.

    摘要翻译: 旋转挖掘头上的切割工具或拾取器具有基本上平坦的主体,其具有前部和后部侧面,其中一个侧面具有弓形凹部或突出部,其通过互补弯曲的构造配合地接合在工具架的凹槽的相邻壁上, 具有旋转接头,拾取器的主体在其柄部插入口袋中时可旋转。 口袋内部的螺钉夹将楔子牢牢地楔入一个位置,在一个实施例中,通过提供旋转接头的带齿和凹入的表面可以进行选择性配合,从而可以调整。 拾取器可以被一个或多个附加的螺钉进一步支撑在其中并且承载在其它口袋壁上。