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    Method of processing waste sludge from wet phosphoric acid purification facilities
    1.
    发明授权
    Method of processing waste sludge from wet phosphoric acid purification facilities 失效
    湿法磷酸净化设备废渣处理方法

    公开(公告)号：US4257898A

    公开(公告)日：1981-03-24

    申请号：US99530

    申请日：1979-12-03

    申请人： Peter Meurer ,  Martin Hater ,  Fritz Meininghaus ,  Rudiger Scheel

    发明人： Peter Meurer ,  Martin Hater ,  Fritz Meininghaus ,  Rudiger Scheel

    IPC分类号： C05B5/00 ,  C05B21/00 ,  C02F1/00

    CPC分类号： C05B5/00 ,  Y10S210/907

    摘要： The invention relates to a method of processing the waste sludge obtained in purification facilities for phosphoric acid produced by the wet process. The composition of this sludge is such that it cannot be utilized for any purpose in this state. It is known that sludge from wet phosphoric acid purification facilities contains different quantities of certain substances, the concentrations being such that these substances may not be allowed to mix with surface water or ground water under any circumstances, not even in the case of dumps. A typical composition of such waste sludge is as follows:______________________________________ Fe 9.0% by weight P.sub.2 O.sub.5 21.0% by weight CaO 6.2% by weight SiO.sub.2 12.5% by weight MgO 5.8% by weight Al.sub.2 O.sub.3 2.7% by weight Cr.sub.2 O.sub.3 0.7% by weight V.sub.2 O.sub.5 0.6% by weight Na.sub.2 O 18.0% by weight K.sub.2 O 0.3% by weight F 1.7% by weight C 2.5% by weight S 0.3% by weight Remainder* 18.7% by weight 100.0% by weight ______________________________________ *The remainder consists mainly of hydration water and carbonate that did not decompose at a temperature of 105.degree. C.

    摘要翻译： 本发明涉及一种在湿法生产的磷酸净化设备中得到的废污泥处理方法。 这种污泥的组成使得在这种状态下不能用于任何目的。 已知来自湿磷酸净化设备的污泥含有不同数量的某些物质，其浓度使得这些物质在任何情况下都不得与地表水或地下水混合，即使在倾倒的情况下也不允许与地表水或地下水混合。 这种废污泥的典型组成如下：-Fe 9.0重量％-P 2 O 5 21.0重量％-CaO 6.2重量％-SiO 2 12.5重量％-Mg 5.8 5.8重量％-Al 2 O 3 2.7重量％-Cr 2 O 3 0.7 重量％-V2O5 0.6重量％-Na2O 18.0重量％K2O 0.3重量％-F 1.7重量％-C 2.5重量％-S 0.3重量％剩余量18.7重量％-100.0重量％ 重量 - *其余部分主要由在105℃温度下分解的水合水和碳酸盐组成。

    Method of processing waste sludge from wet phosphoric acid purification facilities
    2.
    再颁专利
    Method of processing waste sludge from wet phosphoric acid purification facilities 失效
    湿法磷酸净化设备废渣处理方法

    公开(公告)号：USRE31179E

    公开(公告)日：1983-03-15

    申请号：US289378

    申请日：1981-08-03

    申请人： Peter Meurer ,  Martin Hater ,  Fritz Meininghaus ,  Rudiger Scheel

    发明人： Peter Meurer ,  Martin Hater ,  Fritz Meininghaus ,  Rudiger Scheel

    IPC分类号： C05B5/00 ,  C05B21/00

    CPC分类号： C05B5/00 ,  Y10S210/907

    摘要： The invention relates to a method of processing the waste sludge obtained in purification facilities for phosphoric acid produced by the wet process. The composition of this sludge is such that it cannot be utilized for any purpose in this state. It is known that sludge from wet phosphoric acid purification facilities contains different quantities of certain substances, the concentrations being such that these substances may not be allowed to mix with surface water or ground water under any circumstances, not even in the case of dumps. A typical composition of such waste sludge is as follows:______________________________________ Fe 9.0% by weight P.sub.2 O.sub.5 21.0% by weight CaO 6.2% by weight SiO.sub.2 12.5% by weight MgO 5.8% by weight Al.sub.2 O.sub.3 2.7% by weight Cr.sub.2 O.sub.3 0.7% by weight V.sub.2 O.sub.5 0.6% by weight Na.sub.2 O 18.0% by weight K.sub.2 O 0.3% by weight F 1.7% by weight C 2.5% by weight S 0.3% by weight Remainder* 18.7% by weight 100.0% by weight ______________________________________ *The remainder consists mainly of hydration water and carbonate that did not decompose at a temperature of 105.degree. C.