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    • 7. 发明申请
    • Production Method of a Novel Polishing Alumina
    • 新型抛光氧化铝的生产方法
    • US20150315442A1
    • 2015-11-05
    • US14648283
    • 2013-12-23
    • ALBEMARLE EUROPE SPRL
    • Henning Hofius
    • C09K3/14
    • C09K3/1427C01F5/08C01F7/162C01F7/30C01F7/441C01F7/442C01G15/00C01G23/006C01G25/02C01G37/00C01G45/1242C01G49/0045C01G49/0054C01G51/40C01P2004/03C01P2004/52C01P2004/61C01P2004/62C01P2006/12C09D1/02C09K3/1436
    • Provided is a method for the formation of particulate compounds of selectable size characteristics, which method includes supporting a slurried particulate precursor on a porous support; heating the support such that aggregates of the particulate compound are formed, and desagglomerating the aggregates into their component particulate. In a preferred embodiment, an aqueous slurry of alumina particulate which has not undergone the alpha transition is contacted with a porous support having defined pore and cavity sizes, such that the slurry occupies at least some of the interstices of the porous support. The slurry and support are heated such that the alumina precursor slurry undergoes the alpha transition. The alpha alumina product is then particulated. The support is of such a material that it is either lost through combustion during heating or otherwise removable after heating, such as during or after particulation, without destroying the particle characteristics imparted by the porous support. Additionally, in a further embodiment, co-components are added to the slurry in order to impart desired properties to the particulated product.
    • 提供了形成可选尺寸特性的颗粒化合物的方法,该方法包括在多孔载体上支撑浆状颗粒前体; 加热支撑体使得形成颗粒化合物的聚集体,并将聚集体解散聚集成它们的组分颗粒。 在优选的实施方案中,未经历α转变的氧化铝颗粒的水性浆料与具有确定的孔和空腔尺寸的多孔载体接触,使得浆料占据多孔载体的至少一些间隙。 加热浆料和载体使得氧化铝前体浆料经历α转变。 然后将α氧化铝产物粉碎。 支撑件具有这样的材料,即它在加热期间通过燃烧而失去,或者在加热之后,例如在雾化期间或之后,或者在不破坏由多孔载体赋予的颗粒特性的情况下被去除。 另外,在另一个实施方案中,向浆料中加入共组分,以赋予微粒产物所需的性能。