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    • 2. 发明申请
    • METHOD FOR PRODUCING CALCIUM BORATE
    • 生产硼酸钙的方法
    • WO1997014649A1
    • 1997-04-24
    • PCT/US1996016445
    • 1996-10-16
    • U.S. BORAX INC.
    • U.S. BORAX INC.SCHUBERT, David, M.
    • C01B35/12
    • C01B35/126
    • 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.
    • 提供了一种通过硼酸和石灰在含水浆料中反应生产结晶六硼酸钙四水合物,合成贵金属的改进方法。 反应条件包括硼酸与水的摩尔比大于0.25:1,石灰与硼酸的摩尔比在0.05-0.15:1范围内,温度在85℃-105℃范围内。新的结晶产物是 产生具有独特的晶体习性,导致改善的物理性能。 该产品的脱水产生了具有类似晶体习性和物理性质的新型无定形无水产品。
    • 6. 发明申请
    • PRODUCTION OF BORIC OXIDE
    • 生产氧化硼
    • WO1996034826A1
    • 1996-11-07
    • PCT/US1996005927
    • 1996-04-29
    • U.S. BORAX INC.
    • U.S. BORAX INC.FISHER, Richard, P.KWAMYA, John, D.GRAY, Tracy, E.
    • C01B35/10
    • C01B35/1036
    • Amorphous boric oxide-containing product having about 80 to 90 % B2O3 is produced by heating boric acid to an elevated temperature of about 180 DEG to 220 DEG C to dehydrate the boric acid and form a molten glass which is cooled to a solid glassy product. The solid glass can be comminuted to produce a particulate product. Preferably the boric acid is heated at about 195 DEG to 205 DEG C. The process is readily adapted to a continuous process in which the boric acid is continuously fed through a heated reactor-mixer such as a Kneadermaster mixer or Discotherm mixer. The molten glassy product is cooled to form a solid glassy product which can be comminuted to a desirable particle size range.
    • 通过将硼酸加热至约180℃至220℃的升高温度使硼酸脱水并形成冷却至固体玻璃状产物的熔融玻璃来制备具有约80至90%B 2 O 3的无定形含氧化硼的产物。 固体玻璃可以粉碎以产生颗粒产物。 优选地,硼酸在约195℃至205℃下加热。该方法容易适用于其中硼酸通过加热的反应器 - 混合器如Kneadermaster混合器或Discotherm混合器连续进料的连续方法。 将熔融的玻璃状产物冷却以形成固体玻璃状产物,其可粉碎至所需的粒度范围。