Method of producing zirconium dioxide by electrofusion ball-blowing

Method of producing zirconium dioxide by electrofusion ball-blowing

  • CN 1,099,355 A
  • Filed: 08/20/1994
  • Published: 03/01/1995
  • Est. Priority Date: 08/20/1994
  • Status: Abandoned Application
First Claim
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1. , a kind of method with electrofusion ball-blowing manufactured low silicon content, the granular foam zirconium dioxide of monoclinic form hollow ball is characterized in that,-in the selected zircon of 91 weight part granularities below 0.2mm, add the 0.3-0.7 weight parts water, mix well the back and add 9 weight part aluminum oxide fusing assistants, add the graphite electrode powder of 6 weight part granularities below 0.15mm again, above-mentioned compound is transferred in mixing machine mixed 8-15 minute;

  • -material that mixes up in the above-mentioned steps is dropped in the electric arc furnace several times, adding 3 weight part mean sizess several times simultaneously is the graphite electrode slab of 10-50mm;

    -under 116V voltage,, make furnace temperature reach about 2000 ℃

    melting 1-2h with the starting the arc of 1800A electric current;

    -continue to heat, turndown when furnace temperature reaches 2430 ℃

    , and with 8-10kg/cm 2High pressure air flow is blown out spherolite with liquation, and collects it in collection ball chamber.

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