Title:
METHOD AND DEVICE FOR PRODUCING GRANULAR ZINC
Document Type and Number:
Japanese Patent JP3281019
Kind Code:
B2
Abstract:
PURPOSE: To easily and separately form a globular grain and a lachrymal grain, to improve respective forming rates as desired and to produce a granular zinc with the oxidation of the grain surface, generation of cavities, pitting and intrusion of impurities reduced by using this device.
CONSTITUTION: A graphite melting crucible 1 has a nozzle 2 at the bottom, and a dripping rate control valve 9 is provided to the nozzle. The crucible is placed in a quartz vessel 3 and covered with a lid furnished with an inert gas inlet pipe 4 and an outlet 10, and the entire crucible is placed in an electric furnace 5. A nozzle heater 7 is set around the nozzle, and a cooling water tank 9 is provided below the nozzle. The fall L from the nozzle tip to the cooling liq. surface is adjusted by vertically moving the entire device with a device 8 for vertically moving the electric furnace.
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Inventors:
Kishio Tayama
Takako Funaki
Shinichi Komuro
Takako Funaki
Shinichi Komuro
Application Number:
JP4020092A
Publication Date:
May 13, 2002
Filing Date:
January 30, 1992
Export Citation:
Assignee:
DOWA MINING CO.,LTD.
International Classes:
B22F9/08; B22F1/00; (IPC1-7): B22F9/08; B22F1/00
Domestic Patent References:
| JP5468764A | ||||
| JP63223108A |
Attorney, Agent or Firm:
Masahiko Maruoka
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