Production of titania
    11.
    发明申请
    Production of titania 失效
    生产二氧化钛

    公开(公告)号:US20050180903A1

    公开(公告)日:2005-08-18

    申请号:US11107687

    申请日:2005-04-15

    Abstract: A sulfate process for producing titania from titaniferous material is disclosed. The process includes precipitating titanyl sulfate from leach liquors containing acidic solutions of titanyl sulfate. The process is characterised by: (a) multiple stage leaching to produce leach liquors containing acidic solutions of titanyl sulfate; (b) using depleted leach liquor from a titanyl sulfate precipitation reactor in the leach steps; and (c) controlling acid concentration in the leach steps to avoid premature hydrolysis and premature precipitation.

    Abstract translation: 公开了一种用于从含钛材料制备二氧化钛的硫酸盐方法。 该方法包括从含有硫酸氧钛的酸性溶液的浸出液中沉淀硫酸氧钛。 该方法的特征在于:(a)多级浸提以生产含硫酸氧钛酸性溶液的浸出液; (b)在浸出步骤中使用来自硫酸氧钛沉淀反应器的贫化浸出液; 和(c)控制浸出步骤中的酸浓度以避免过早水解和过早沉淀。

    Method and composition for rejuvenating weathered polymeric materials
    12.
    发明授权
    Method and composition for rejuvenating weathered polymeric materials 有权
    振兴风化聚合材料的方法和组成

    公开(公告)号:US06669991B2

    公开(公告)日:2003-12-30

    申请号:US10102714

    申请日:2002-03-22

    Applicant: Alan Stuart

    Inventor: Alan Stuart

    CPC classification number: C08J7/02 C08J7/065 C08J2327/06

    Abstract: A method for rejuvenating a vinyl resin surface, the method comprising applying a composition to the surface, where the composition includes at least one organic solvent compound that has a solubility parameter (&dgr;) of from about 8.0 to about 10.6 (cal/cm3)½.

    Abstract translation: 一种用于使乙烯基树脂表面再生的方法,该方法包括将组合物施用于表面,其中组合物包含至少一种溶解度参数(δ)为约8.0至约10.6(cal / cm 3)的有机溶剂化合物 >)<½>。

    Production of titania
    15.
    发明申请
    Production of titania 失效
    生产二氧化钛

    公开(公告)号:US20060233686A1

    公开(公告)日:2006-10-19

    申请号:US10531795

    申请日:2003-10-17

    CPC classification number: C22B34/125 C22B3/08 C22B3/44 C22B34/1259 Y02P10/234

    Abstract: A sulfate process for producing titania from a titaniferous material is disclosed. The process includes leaching the titaniferous material and producing a leach liquor, separating titanyl sulfate from leach liquor, hydrolysis of the extracted titanyl sulfate, and thereafter calcining the solid phase produced in the hydrolysis step. The process is characterised by multiple stage leaching of the titaniferous material.

    Abstract translation: 公开了一种用于从含钛材料制备二氧化钛的硫酸盐方法。 该方法包括浸提含钛材料并生产浸出液,从浸出液中分离出硫酸氧钛,水解萃取的硫酸氧钛,然后煅烧在水解步骤中产生的固相。 该方法的特征在于钛酸盐材料的多级浸出。

    Production of titania
    16.
    发明申请
    Production of titania 失效
    生产二氧化钛

    公开(公告)号:US20060177363A1

    公开(公告)日:2006-08-10

    申请号:US10531784

    申请日:2003-10-17

    CPC classification number: C22B34/1259 C22B3/0005 C22B34/125 Y02P10/234

    Abstract: A sulfate process for producing titania from a titaniferous material is disclosed. The process includes leaching the titaniferous material and producing a leach liquor, precipitating iron sulfate from the leach liquor, solvent extraction of titanyl sulfate from leach liquor, hydrolysis of the extracted titanyl sulfate, and thereafter calcining the solid phase produced in the hydrolysis step. The process is characterised by using at least part of the raffinate from the solvent extraction step as at least part of the leach solution in the initial leach step.

    Abstract translation: 公开了一种用于从含钛材料制备二氧化钛的硫酸盐方法。 该方法包括浸出含钛材料并产生浸出液,从浸出液中沉淀出硫酸铁,从浸出液中溶剂萃取硫酸氧钛,水解萃取的硫酸氧钛,然后煅烧在水解步骤中产生的固相。 该方法的特征在于使用溶剂萃取步骤中的至少一部分萃余液作为初始浸出步骤中的浸出溶液的至少一部分。

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