Mixing and packing of particles
    1.
    发明授权
    Mixing and packing of particles 有权
    混合和包装颗粒

    公开(公告)号:US07806150B2

    公开(公告)日:2010-10-05

    申请号:US12464553

    申请日:2009-05-12

    Abstract: A method for packing and/or mixing particulate materials, e.g., aerogel particles, includes combining materials having different particle sizes and applying a negative pressure differential in the presence of a sound field. A negative pressure differential in the presence of vibration also can be used. The method increases mixing and packing density.

    Abstract translation: 用于包装和/或混合颗粒材料(例如气凝胶颗粒)的方法包括组合具有不同粒度的材料并在存在声场的情况下施加负压差。 也可以使用存在振动的负压差。 该方法提高了混合和包装密度。

    Vanadium recovery from scrap alloys
    4.
    发明授权
    Vanadium recovery from scrap alloys 失效
    废钢回收钒

    公开(公告)号:US4298582A

    公开(公告)日:1981-11-03

    申请号:US140569

    申请日:1980-04-15

    CPC classification number: C01G31/00 C22B34/22 C22B34/30 Y02P10/234

    Abstract: Disclosed is a process for recovering chromium, vanadium, molybdenum, and tungsten from secondary resources such as alloy scrap comprising a refractory metal and base metals such as cobalt, nickel, iron, and copper. The scrap is calcined with sodium carbonate in air to convert the refractory metal values to MoO.sub.4.sup.=, VO.sub.4.sup..ident., WO.sub.4.sup.=, and CrO.sub.4.sup.= and the base metals to water insoluble oxides. A leach of the calcined materials produces a pregnant liquor rich in refractory metals which, after separation of the vanadium, molybdenum and tungsten values, is treated with CO, CHOO.sup.-, CH.sub.3 OH, or HCHO to reduce Cr.sup.+6 to Cr.sup.+3. The carbonate and bicarbonate salts produced as a byproduct of the reduction are recycled to the calcination stage.As a result of the V, W, and Mo partition, a mixed solid comprising CaO.nV.sub.2 O.sub.5, CaMoO.sub.4, and CaWO.sub.4 is produced. This is treated with carbonated water or formic acid to selectively dissolve vanadium values which are subsequently recovered by precipitation or extraction. The remaining mixed CaWO.sub.4 and CaMoO.sub.4 solid is treated with H.sub.2 O.sub.2 and sulfuric acid to reject a Mo and W-free CaSO.sub.4 precipitate, and to produce a concentrated solution of tungsten and molybdenum. The W values are selectively precipitated from this solution by decomposing the peroxy complexes. The process has the advantages that a wide variety of different feed materials can be treated, no energy intensive pyrometallurgy is involved, reagent consumption is minimized, and no aqueous effluents are produced.

    Abstract translation: 公开了从二次资源中回收铬,钒,钼和钨的方法,例如包含难熔金属和诸如钴,镍,铁和铜的贱金属的合金废料。 将废料用碳酸钠在空气中煅烧以将难熔金属值转化为MoO4 =,VO4 =,WO4 =和CrO4 =,并将贱金属转化为水不溶性氧化物。 煅烧材料的浸出产生富含难熔金属的怀孕液体,在分离钒,钼和钨的值后,用CO,CHOO-,CH 3 OH或HCHO处理以将Cr + 6还原为Cr + 3。 作为还原的副产物产生的碳酸盐和碳酸氢盐被再循环到煅烧阶段。 作为V,W和Mo分隔的结果,制备了包含CaO·nV 2 O 5,CaMoO 4和CaWO 4的混合固体。 用碳酸水或甲酸处理,以选择性地溶解钒值,随后通过沉淀或萃取回收。 剩余的混合CaWO4和CaMoO4固体用H 2 O 2和硫酸处理以排除Mo和无W的CaSO 4沉淀物,并产生钨和钼的浓溶液。 W值通过分解过氧配合物从该溶液中选择性沉淀。 该方法的优点是可以处理各种不同的饲料,不涉及能量密集的火法冶金,减少试剂消耗,不产生含水废水。

    Mineral binders colored with silicon-containing carbon black
    8.
    发明授权
    Mineral binders colored with silicon-containing carbon black 失效
    矿物粘合剂用含硅炭黑着色

    公开(公告)号:US5863323A

    公开(公告)日:1999-01-26

    申请号:US737999

    申请日:1997-04-07

    Abstract: Binder compositions are provided which include a mineral binder and a silicon-containing carbon black. The silicon-containing carbon black can have attached an ionic or ionizable organic group or can be oxidized. Silicon-containing carbon blacks may be prepared by a furnace method. The binder compositions of the present invention have improved coloring and weathering properties in comparison to binder compositions prepared with conventional carbon blacks. Furthermore, the binder compositions that incorporate silicon-containing carbon blacks having ionic or ionizable organic groups attached exhibit excellent dispersibility, even in pelletized form. Articles such as roofing tiles can be prepared from the binder compositions. Also contemplated is a method of improving the color stability of a mineral binder composition. Silicon-containing carbon blacks as described above are added to the mineral binder composition.

    Abstract translation: PCT No.PCT / US96 / 07312 Sec。 371日期1997年4月7日 102(e)1997年4月7日PCT PCT 1996年5月21日PCT公布。 公开号WO96 / 37447 日期1996年11月28日提供了包含矿物粘合剂和含硅炭黑的粘合剂组合物。 含硅炭黑可以附着离子或可离子化的有机基团或可被氧化。 含硅炭黑可以通过炉法制备。 与用常规炭黑制备的粘合剂组合物相比,本发明的粘合剂组合物具有改善的着色和耐候性能。 此外,即使以粒状形式,含有具有离子性或电离性有机基团的含硅炭黑的粘合剂组合物也表现出优异的分散性。 诸如屋顶瓦的制品可以由粘合剂组合物制备。 还考虑了改进矿物粘合剂组合物的颜色稳定性的方法。 将如上所述的含硅炭黑加入到矿物粘合剂组合物中。

    Mineral binders colored with silicon-containing carbon black
    10.
    发明授权
    Mineral binders colored with silicon-containing carbon black 失效
    矿物粘合剂用含硅炭黑着色

    公开(公告)号:US5622557A

    公开(公告)日:1997-04-22

    申请号:US446143

    申请日:1995-05-22

    Abstract: Binder compositions are provided which include a mineral binder and a silicon-containing carbon black. The silicon-containing carbon black can have attached an ionic or ionizable organic group or can be oxidized. Silicon-containing carbon blacks may be prepared by a furnace method. The binder compositions of the present invention have improved coloring and weathering properties in comparison to binder compositions prepared with conventional carbon blacks. Furthermore, the binder compositions that incorporate silicon-containing carbon blacks having ionic or ionizable organic groups attached exhibit excellent dispersibility, even in pelletized form. Articles such as roofing tiles can be prepared from the binder compositions. Also contemplated is a method of improving the color stability of a mineral binder composition. Silicon-containing carbon blacks as described above are added to the mineral binder composition.

    Abstract translation: 提供了粘合剂组合物,其包括矿物粘合剂和含硅炭黑。 含硅炭黑可以附着离子或可离子化的有机基团或可被氧化。 含硅炭黑可以通过炉法制备。 与用常规炭黑制备的粘合剂组合物相比,本发明的粘合剂组合物具有改善的着色和耐候性能。 此外,即使以粒状形式,含有具有离子性或电离性有机基团的含硅炭黑的粘合剂组合物也表现出优异的分散性。 诸如屋顶瓦的制品可以由粘合剂组合物制备。 还考虑了改进矿物粘合剂组合物的颜色稳定性的方法。 将如上所述的含硅炭黑加入到矿物粘合剂组合物中。

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