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    • 8. 发明专利
    • Method for producing zinc oxide powder
    • 氧化锌粉的生产方法
    • JP2007161580A
    • 2007-06-28
    • JP2006340375
    • 2006-12-18
    • Degussa Gmbhデグサ ゲーエムベーハーDegussa GmbH
    • ZIMMERMANN GUIDOKATUSIC STIPANKRAEMER MICHAELMIESS HORSTNUH YILMAZMICHAEL GUENTHER
    • C01G9/03
    • C01G9/03C01P2006/12C09C1/043
    • PROBLEM TO BE SOLVED: To provide an improved method for producing a zinc oxide powder without generating a cake-like material in an evaporation zone and an oxidation zone.
      SOLUTION: In the evaporation zone, a gas flow of an inert gas and a fuel gas is passed through a melt of zinc having a temperature of 780-850°C while forming zinc vapor. In this case, the content of the fuel gas is 1-50 vol.% based on the total volume of the inert gas and the fuel gas, and the molar ratio of the zinc vapor to the fuel gas is 0.01-50. In the oxidation zone, a second gas flow containing an oxygen-containing gas and steam is added to a gas flow of the zinc vapor, the fuel gas, and the inert gas in such an amount that the temperature in the oxidation zone is kept within a range of 500-1,000°C.
      COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:提供一种在蒸发区和氧化区中不产生饼状材料的氧化锌粉末的制造方法。 解决方案:在蒸发区中,惰性气体和燃料气体的气流在形成锌蒸气的同时通过温度为780-850℃的锌熔体。 在这种情况下,基于惰性气体和燃料气体的总体积,燃料气体的含量为1-50体积%,锌蒸气与燃料气体的摩尔比为0.01-50。 在氧化区中,将含有含氧气体和蒸汽的第二气流加入到锌蒸汽,燃料气体和惰性气体的气流中,其量使得氧化区中的温度保持在 范围500-1,000℃。 版权所有(C)2007,JPO&INPIT