Method and device for preparing boehmite ultrafine powder with hollow microsphere structure

Method and device for preparing boehmite ultrafine powder with hollow microsphere structure

  • CN 102,730,727 A
  • Filed: 07/02/2012
  • Published: 10/17/2012
  • Est. Priority Date: 07/02/2012
  • Status: Active Application
First Claim
Patent Images

1. method for preparing tiny balloon structure boehmite superfine powder is characterized in that this method may further comprise the steps:

  • With analytically pure Al 2(SO 4) 318H 2O is dissolved in the deionized water, makes Al 3+Concentration is the clear solution A of 0.1~

    0.5mol/L;

    Add a certain amount of precipitation agent, continue to stir half a hour, make clear solution B;

    Solution B is poured in the microwave hydrothermal reaction device, and compactedness is controlled at 65~

    80%, and hydrothermal temperature is controlled at 140~

    210 ℃

    , reacts 40~

    240 minutes, and reaction naturally cools to room temperature after finishing;

    With the rotating speed spinning of precipitated product with 4000 rev/mins, use deionized water and absolute ethanol washing respectively, and place 80~

    100 ℃

    vacuum drying oven inner drying 4~

    8 hours, obtain tiny balloon structure boehmite superfine powder.

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