POLY ALUMINIUM-SILICATE COMPOSITIONS AND PROCESSES FOR PRODUCING THE SAME
    1.
    发明申请
    POLY ALUMINIUM-SILICATE COMPOSITIONS AND PROCESSES FOR PRODUCING THE SAME 审中-公开
    聚硅酸铝组合物及其制造方法

    公开(公告)号:WO2014194917A1

    公开(公告)日:2014-12-11

    申请号:PCT/DK2014/050156

    申请日:2014-06-04

    摘要: The present invention relates to an improved poly aluminium-silicate composite composition, an improved method for preparing said composition as well as intermediate poly silicate and aluminium-silicate compositions and their preparation. Moreover, the present invention relates to the use of a said poly aluminium-silicate composition as a coagulant in purification of water, such as drinking water or waste water.

    摘要翻译: 本发明涉及一种改进的聚硅酸铝复合组合物,一种制备所述组合物的改进方法以及中间体多硅酸盐和硅酸铝组合物及其制备方法。 此外,本发明涉及所述聚硅酸铝组合物作为凝结剂在水的净化中的用途,例如饮用水或废水。

    PROCESS FOR PRODUCING HIGH SOLIDS POLYSILICIC ACID WITH HIGH SODA EFFICIENCY AND SILICA YIELD
    2.
    发明申请
    PROCESS FOR PRODUCING HIGH SOLIDS POLYSILICIC ACID WITH HIGH SODA EFFICIENCY AND SILICA YIELD 审中-公开
    生产具有高SODA效率和二氧化硅含量的高浓度多晶硅酸的方法

    公开(公告)号:WO2013173305A3

    公开(公告)日:2014-02-20

    申请号:PCT/US2013040907

    申请日:2013-05-14

    申请人: ALBEMARLE CORP

    IPC分类号: C01B33/143 C01B33/154

    CPC分类号: C01B33/1435

    摘要: Provided is a method for the preparation of high solids, low sodium content polysilicic acid (PSA). The method includes the steps of acidifying a waterglass solution such that the pH of the solution falls to 4 or less in a time period of less than about 20 seconds; and contacting the reduced pH waterglass solution with an acid exchange resin. In a preferred embodiment, the PSA is prepared in a recirculating loop.

    摘要翻译: 提供了制备高固含量低钠含量聚硅酸(PSA)的方法。 该方法包括以下步骤:在小于约20秒的时间段内酸化水玻璃溶液使得溶液的pH降至4以下; 并将还原的pH玻璃水溶液与酸交换树脂接触。 在优选的实施方案中,PSA在循环回路中制备。

    СПОСОБ ПОЛУЧЕНИЯ КРЕМНЕЗЕМНОГО СОРБЕНТА
    3.
    发明申请
    СПОСОБ ПОЛУЧЕНИЯ КРЕМНЕЗЕМНОГО СОРБЕНТА 审中-公开
    生产二氧化硅分子的方法

    公开(公告)号:WO2010147499A2

    公开(公告)日:2010-12-23

    申请号:PCT/RU2010/000155

    申请日:2010-04-05

    IPC分类号: C01B33/143 B01J20/30

    CPC分类号: C01B33/143 B01J20/103

    摘要: Изобретение относится к области сельского хозяйства. Способ заключается в том, что готовят раствор кремнесодержащего сырья путем добавления в профильтрованную воду силиката натрия с силикатным модулем 3,32 при тщательном перемешивании с подогревом до 50-55°C. Кроме того, готовят водный раствор аккумуляторного электролита путем добавления в профильтрованную воду аккумуляторного электролита плотностью 1, 835 г/см 3 при тщательном перемешивании с подогревом до 50- 55°C. Далее смешивают в равных объемах водный раствор аккумуляторного электролита и раствор кремнесодержащего сырья в емкости посредством перемешивающего устройства. Осуществляют нормализацию смеси путем добавления в нее водного раствора аккумуляторного электролита до достижения водородного показателя рН в пределах 5-7. Производят фильтрацию и расфасовку полученного сорбента в мерные емкости. Преимущество изобретения заключается в повышении производительности, поскольку исключается необходимость осуществления длительной по времени операции созревания гидрогеля.

    摘要翻译: 本发明涉及农业领域,涉及一种方法,其包括通过向过滤水中加入二氧化硅模数为3.32的硅酸钠并通过在加热至50-55℃的同时充分混合来制备含硅原料溶液 C。 该方法还包括通过向过滤的水中加入密度为1.835g / cm 3的电池电解质并在加热到50-55℃的温度下充分混合来制备电池电解质的水溶液。 电池电解质的水溶液和含硅原料的溶液在等容器中使用混合装置混合在容器中。 通过加入积聚电解质的水溶液使混合物标准化,直到氢pH值达到5-7。 然后将由此获得的吸附剂过滤并预先包装在测量容器中。 本发明具有提高生产率的优点,因为不再需要进行长时间的水凝胶成熟过程。

    SILICA-BASED SOLS AND THEIR PRODUCTION AND USE
    5.
    发明申请
    SILICA-BASED SOLS AND THEIR PRODUCTION AND USE 审中-公开
    二氧化硅溶胶及其生产和使用

    公开(公告)号:WO2005097678A1

    公开(公告)日:2005-10-20

    申请号:PCT/SE2005/000488

    申请日:2005-04-05

    IPC分类号: C01B33/143

    摘要: The present invention relates to a process for producing an aqueous silica-based sol which comprises: (a) providing a cationic ion exchange resin having at least part of its ion exchange capacity in hydrogen form; (b) bringing said ion exchange resin in contact with an aqueous alkali metal silicate to form an aqueous slurry; (c) stirring said aqueous slurry until the pH of the aqueous phase is in the range of from 5.0 to 11.5; and/or alternatively, stirring said aqueous slurry to allow particle aggregation or microgel formation corresponding to an S value up to 45 %, and obtain a pH of the aqueous phase of at least 5.0; (d) adjusting the pH of said aqueous phase to above 9.0 using one or more materials comprising at least one aluminium compound; and (e)separating said ion exchange resin from the aqueous phase after step (c) or after step (d). The invention also relates to a silica-based sol having an S value within the range of from 15 to 25 %, mole ratio Si:Al in the range of from 20:1 to 50:1, mole ratio Si:X, where X = alkali metal, in the range of from 5:1 to 17:1, SiO 2 content of at least 5 % by weight and containing silica-based particles having a specific surface area of at least 300 m 2 /g. The invention further relates to process for producing paper which comprises: (i) providing an aqueous suspension comprising cellulosic fibres; (j) adding to the suspension one or more drainage and retention aids comprising a silica-based sol according to the invention; and (k) dewatering the obtained suspension to provide a sheet or web of paper.

    摘要翻译: 本发明涉及一种二氧化硅水溶胶的制备方法,其包括:(a)提供具有氢形式的至少部分离子交换容量的阳离子离子交换树脂; (b)使所述离子交换树脂与碱金属硅酸盐水溶液接触以形成含水浆料; (c)搅拌所述含水浆料直到水相的pH在5.0至11.5的范围内; 和/或可选地,搅拌所述含水浆料以允许对应于高达45%的S值的颗粒聚集或微凝胶形成,并且获得水相的pH至少为5.0; (d)使用包含至少一种铝化合物的一种或多种材料将所述水相的pH调节至9.0以上; 和(e)在步骤(c)之后或步骤(d)之后将所述离子交换树脂与水相分离。 本发明还涉及一种二氧化硅基溶胶,其S值在15至25%范围内,摩尔比Si:Al在20:1至50:1的范围内,摩尔比Si:X,其中X =碱金属,范围为5:1至17:1,SiO 2含量为至少5重量%,并且含有比表面积至少为300m 2 / g的二氧化硅基颗粒。 本发明还涉及生产纸的方法,其包括:(i)提供包含纤维素纤维的水性悬浮液; (j)向悬浮液中加入一种或多种包含根据本发明的二氧化硅基溶胶的引流和助留剂; 和(k)将获得的悬浮液脱水以提供纸张或纸幅。

    CONTINUOUS PRODUCTION OF SILICA VIA ION EXCHANGE
    6.
    发明申请
    CONTINUOUS PRODUCTION OF SILICA VIA ION EXCHANGE 审中-公开
    通过离子交换连续生产二氧化硅

    公开(公告)号:WO99036358A1

    公开(公告)日:1999-07-22

    申请号:PCT/US1999/000162

    申请日:1999-01-13

    摘要: The present invention provides a continuous process for the conversion of sodium silicate to silicic acid, wherein a moving bed of a protonated ion exchange resin is contacted with an inlet stream of sodium silicate to provide an outlet stream of silicic acid. The outlet stream of silicic acid produced thereby can be processed into a variety of silica products. The outlet moving bed of spent sodium-enriched ion-exchange resin is continuously regenerated into protonated ion-exchange resin by contacting the spent resin with an inlet stream of acid of sufficient strength to exchange the sodium ions in the spent resin with a proton. The regenerated protonated ion-exchange resin is continuously recycled back into the sodium silicate stream for further production of silicic acid.

    摘要翻译: 本发明提供了将硅酸钠转化为硅酸的连续方法,其中质子离子交换树脂的移动床与硅酸钠的入口流接触以提供硅酸的出口流。 由此产生的硅酸的出口流可以被加工成各种二氧化硅产品。 经过消耗的富含钠的离子交换树脂的出口移动床通过使废树脂与足够强度的酸的入口流接触,将废树脂中的钠离子与质子交换而连续再生成质子离子交换树脂。 将再生的质子离子交换树脂连续再循环回硅酸钠流中,以进一步生产硅酸。

    A METHOD FOR PRODUCING A MICRON-SIZE SPHERICAL SILICA AEROGEL

    公开(公告)号:WO2018124979A3

    公开(公告)日:2018-07-05

    申请号:PCT/TH2017/000086

    申请日:2017-12-08

    摘要: A method for producing a micron-size spherical silica aerogel having a selectable or controllable average particle size, the method includes producing a surface—modified silica sol by adding a first organosilane compound to a aqueous acid-silica sol, which comprises an inorganic acid and a water glass solution, with a pH less than 3, dispersive mixing a non-polar organic solvent, a second organosilane compound, and the surface-modified silica sol, at a selected stirring rate which is inversely related to an average particle size, without adding any surfactant or dispersant, a micron-size spherical silica hydrogel and further a hydrophobic micron-size spherical silica gel are then produced. Following by drying or stirring the hydrophobic micron-size spherical silica gel to obtain a controllable micron-size silica aerogel in a spherical and powder forms, respectively.