Production of precipitated silica
    1.
    发明授权
    Production of precipitated silica 有权
    沉淀二氧化硅的生产

    公开(公告)号:US08454919B2

    公开(公告)日:2013-06-04

    申请号:US12989160

    申请日:2009-04-24

    IPC分类号: C01B33/12 B01D37/02 C02F1/00

    CPC分类号: C01B33/1485

    摘要: Precipitated silica is produced by a process that includes a step for filtering and washing an aqueous suspension (S), comprising the following steps: (a) filtering a first portion (S1) of a precipitated silica suspension (S), whereby a cake (G1) is formed and said cake (G1) is then washed and a suspension (S′1) is formed by suspending the thereby obtained washed cake (G1), notably by dilution with water; (b) filtering a second portion (S2) of the suspension (S), whereby a cake (G2) is obtained; and (c) filtering said suspension (S′1) emanating from step (a) through the cake (G2) obtained at the end of step (b), employed as a filtration precoating layer.

    摘要翻译: 沉淀二氧化硅通过包括用于过滤和洗涤水性悬浮液(S)的步骤的方法制备,包括以下步骤:(a)过滤沉淀二氧化硅悬浮液(S)的第一部分(S1),由此将滤饼( G1),然后洗涤所述滤饼(G1),通过悬浮由此得到的洗涤滤饼(G1),特别是用水稀释形成悬浮液(S'1) (b)过滤所述悬浮液(S)的第二部分(S2),由此得到饼(G2) 和(c)将从步骤(a)发出的所述悬浮液(S'1)过滤通过步骤(b)结束时获得的滤饼(G2),用作过滤预涂层。

    PRODUCTION OF PRECIPITATED SILICA
    2.
    发明申请
    PRODUCTION OF PRECIPITATED SILICA 有权
    生产二氧化硅

    公开(公告)号:US20110176985A1

    公开(公告)日:2011-07-21

    申请号:US12989160

    申请日:2009-04-24

    IPC分类号: C01B33/12

    CPC分类号: C01B33/1485

    摘要: Precipitated silica is produced by a process that includes a step for filtering and washing an aqueous suspension (S), comprising the following steps: (a) filtering a first portion (S1) of a precipitated silica suspension (S), whereby a cake (G1) is formed and said cake (G1) is then washed and a suspension (S′1) is formed by suspending the thereby obtained washed cake (G1), notably by dilution with water; (b) filtering a second portion (S2) of the suspension (S), whereby a cake (G2) is obtained; and (c) filtering said suspension (S′1) emanating from step (a) through the cake (G2) obtained at the end of step (b), employed as a filtration precoating layer.

    摘要翻译: 沉淀二氧化硅通过包括用于过滤和洗涤水性悬浮液(S)的步骤的方法制备,包括以下步骤:(a)过滤沉淀二氧化硅悬浮液(S)的第一部分(S1),由此将滤饼( G1),然后洗涤所述滤饼(G1),通过悬浮由此得到的洗涤滤饼(G1),特别是用水稀释形成悬浮液(S'1) (b)过滤所述悬浮液(S)的第二部分(S2),由此得到饼(G2) 和(c)将从步骤(a)发出的所述悬浮液(S'1)过滤通过步骤(b)结束时获得的滤饼(G2),用作过滤预涂层。