| 摘要 |
PURPOSE:To stably produce the superfine particles of ZnO by allowing an aq. slurry contg. ZnO to react with gaseous CO2 to obtain basic zinc carbonate which is then pulverized, and thermally decomposing the pulverized material. CONSTITUTION:Gaseous CO2 is blown at the rate of 0.5-5l/min per kg Zn and at 10-70 deg.C into an aq. slurry contg. 100-800g/l ZnO, and allowed to react with the ZnO to obtain basic zinc carbonate. The obtained basic zinc carbonate is pulverized, and then heated and decomposed at 250-1,000 deg.C to obtain ZnO having 0.02-0.1mum particle diameter.
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