METHOD AND APPARATUS FOR DISTRIBUTING PARTICLES
    71.
    发明公开
    METHOD AND APPARATUS FOR DISTRIBUTING PARTICLES 失效
    方法和设备分发粉末材料

    公开(公告)号:EP1009699A1

    公开(公告)日:2000-06-21

    申请号:EP98928433.6

    申请日:1998-06-09

    CPC classification number: B65G69/0483 B65D90/54 B65G69/10 B65G69/16

    Abstract: When a particulate material is admitted to a storage vessel (10), it is passed through an electrode system (12, 14), the electrodes have a sieve like construction to allow the material to pass therethrough. A voltage source and signal generator (16) applies a potential difference betwen electrodes (12 and 14) to create an electric field between the electrodes which stops the passage of the material between the electrodes. Consequently a mass of material is held back by the electrodes. The electric field is controlled by the voltage source and signal generator (16) to release the held back mass of material intermittently. This avoids the formation of a cone of material in the storage vessel and improves the distribution of the particles by preventing the segregation of particles caused by the coarser particles rolling down the sides ofa cone of material.

    GLAZE COMPOSITIONS
    76.
    发明公开
    GLAZE COMPOSITIONS 有权
    玻璃组合物

    公开(公告)号:EP1971559A1

    公开(公告)日:2008-09-24

    申请号:EP07733318.5

    申请日:2007-06-21

    CPC classification number: C03C1/026 C03C1/028 C03C8/02 C03C8/22

    Abstract: This invention relates to boron-containing compositions for use in glaze compositions. There is provided a boron-containing composition for use in glaze production, which composition is obtainable by a process which comprises heating to a temperature sufficiently high that calcination occurs but insufficient for the formation of a homogeneous melt a mixture comprising components capable, under the conditions of heating, of forming the oxides B2O3, SiO2, Al2O3, Na2O and optionally CaO in proportions such that the relative percentages by weight of the said oxides, based on the total weight of the said oxides, are as follows: 10 to 18 % B2O3, 40 to 65 % SiO2, 17 to 32% Al2O3, 4 to 9 % Na2O, and O to 10 % CaO. The boron-containing compositions according to the present invention may be used in glaze compositions, suitably frit-free or boron-free frit-containing glaze compositions.

    INCREASING CAUSTICIZING EFFICIENCY OF ALKALINE PULPING LIQUOR BY BORATE ADDITION
    79.
    发明授权
    INCREASING CAUSTICIZING EFFICIENCY OF ALKALINE PULPING LIQUOR BY BORATE ADDITION 有权
    提高了碱性蒸煮液的KONSTIFIZIERUNG加入波拉特

    公开(公告)号:EP1090181B1

    公开(公告)日:2006-12-20

    申请号:EP99927121.6

    申请日:1999-05-28

    CPC classification number: D21C3/02 D21C11/0078 Y02P40/44

    Abstract: Method and improving causticizing efficiency in the conventional lime recausticization portion of alkaline pulping processes, such as are commonly used in the pulping and bleaching of wood and non-wood cellulose fiber materials. An aqueous solution of sodium carbonate is reacted with lime to produce sodium hydroxide (causticization) in the presence of borate to improve the causticization reaction efficiency. Borate is provided in an amount sufficient to maintain a boron to sodium molar ratio in the range of between about 0.001:1 and 0.4:1, resulting in an increased causticization efficiency. An added benefit is reduction of inorganic deadload in the pulping circuit.

    METHOD FOR PRODUCING CALCIUM BORATE
    80.
    发明授权
    METHOD FOR PRODUCING CALCIUM BORATE 失效
    用于生产钙波拉特

    公开(公告)号:EP0857158B1

    公开(公告)日:2002-01-23

    申请号:EP96936473.6

    申请日:1996-10-16

    CPC classification number: C01B35/126

    Abstract: An improved method is provided for producing crystalline calcium hexaborate tetrahydrate, synthetic nobleite, by the reaction of boric acid and lime in an aqueous slurry. Reaction conditions include boric acid to water molar ratios of greater than 0.25:1, lime to boric acid molar ratios in the range of 0.05-0.15:1 and temperatures in the range of 85 DEG C - 105 DEG C. A novel crystalline product is produced having a unique crystal habit resulting in improved physical properties. Dehydration of this product produced a novel amorphous, anhydrous product having similar crystal habit and physical properties.

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