| 摘要 |
<p>The inventive method for producing zinc oxide consists in injecting powdered zinc contained in the flow of oxygen-containing gas in to a reaction zone. Said zone is pre-heated to a temperature ranging from the zinc boiling point to near 1250 °C. In the reaction zone, the powered zinc is heated and molten, the formation of zinc vapour and the exothermic oxidation thereof are carried out at a temperature ranging from 1150 to 1250 °C, thereby obtaining a zinc oxide aerosol and a heat liberation. The heat thus produced is conveyed to said heating, melting and zinc vapour formation stages, the powered zinc being in suspension state during the stages. Afterwards, a target product is extracted from the obtained aerosol. The inventive device for carrying out said method comprise a hermetical body (1) provided with a reaction chamber (5), a mechanism (6) for initial zinc supply to the reaction chamber (5) provided with a nozzle (8) for dosed supply of metallic powered zinc (7) to the reaction chamber (5). The longitudinal axis of said mechanism is disposed at an angle ranging from 35° to 55° with respect to the vertical axis of the body (1). The output orifice of the nozzle (8) is arranged under the output orifice (17) of a unit (15) for supplying the oxygen containing gas to the reaction chamber (5) in order to oxidise zinc.</p> |
