Bismuth oxide preparation method employing plasma vapour phase method

Bismuth oxide preparation method employing plasma vapour phase method

  • CN 101,628,734 A
  • Filed: 06/24/2009
  • Published: 01/20/2010
  • Est. Priority Date: 06/24/2009
  • Status: Active Application
First Claim
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1. , the method of bismuth oxide preparation method employing plasma vapour phase, be under the direct supply effect, form the plasma orphan between anode and the negative electrode, in plasma vapour-phase reaction stove, bismuth metal liquid is vaporized rapidly, and while and oxygen-rich air moment chemical combination, and generate superfine bismuth oxide, add a large amount of air thereupon, make the bismuth oxide superfine particle of generation, cooling enters separation and recovery system rapidly, it is characterized in that, the voltage of supplying with plasma vapour-phase reaction stove electrode is 25~

  • 40 volts, and electric current 600~

    2000 is pacified doubly, just very bismuth metal, negative pole is a carbon-point, the current density in the negative pole carbon-point cross section be 20~

    45 peaces doubly/cm 2, arc length 20~

    30mm, the Air quality of sending in plasma vapour phase stove is the same period 130~

    70 times of plasma arc evaporated metal bismuth quality.

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