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    • 17. 发明授权
    • Centrifugal atomization for producing zinc powder
    • 用于生产锌粉的离心雾化
    • US08101006B2
    • 2012-01-24
    • US12148748
    • 2008-04-22
    • Michael J. ZurawPeter B. Harris
    • Michael J. ZurawPeter B. Harris
    • B22F9/10
    • B22F9/10H01M4/42H01M4/50H01M6/04
    • A centrifugal impact atomization process for producing zinc or zinc alloy powder from molten zinc. A stream of molten zinc is injected onto the surface of a spinning disk contained within an atomization chamber. The disk has a cup shaped cavity having an open end, opposing closed end and integral side walls. The disk may have baffles protruding into the open cavity core within the disk. The baffles may have straight or curved side surfaces. The disk is rotated at high speeds between about 10,000 and 15,000 rpm (revolutions per minute). The oxygen content in the chamber is preferably between about 1 and 6 vol %. Zinc powder is produced having more smaller size particles. Zinc alkaline cells utilizing such zinc product as anode active material show improved performance, especially as power source in high discharge services such as digital cameras.
    • 用于从熔融锌生产锌或锌合金粉末的离心冲击雾化工艺。 将熔融锌流注入到雾化室内的旋转盘的表面上。 盘具有杯形空腔,其具有开口端,相对的封闭端和整体侧壁。 盘可以具有突出到盘内的开口腔芯中的挡板。 挡板可以具有直的或弯曲的侧表面。 盘以约10,000至15,000rpm(每分钟转数)的高速旋转。 室中的氧含量优选为约1至6体积%。 生产具有更小尺寸颗粒的锌粉。 使用这种锌产品作为阳极活性材料的锌碱性电池显示出改进的性能,特别是作为诸如数码相机的高放电服务中的电源。