Title:
ZINC OXIDE ORE PRODUCTION METHOD
Document Type and Number:
Japanese Patent JP2017048413
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a zinc oxide ore production method to maintain a high removal rate of halogen in a furnace while avoiding productivity reduction by inhibiting generation and growth of coating on a rotary kiln for drying/heating, and to be able to produce high-quality zinc oxide ore under high productivity.SOLUTION: In a zinc oxide ore production method including a drying/heating step, an oil burner provided at a discharge end of a rotary kiln and formed roughly in a cylindrical shape has a structure such that, sequentially from the center, a discharge part for discharging oil and spraying air, a whirling flow blowout part for blowing out primary air which is a whirling flow, and a straight flow blowout part for blowing out secondary air which is a straight flow are concentrically formed in that order, and expansion of a flame ejected is optimized by changing the shape of the oil burner in such a manner that an outer surface temperature at a specific position of the rotary kiln can be within a control temperature range.SELECTED DRAWING: Figure 2
Inventors:
KOMORI SHINTARO
TOMOTA KATSUHIRO
WATANABE HIROSHI
FUJIYAMA HAJIME
TOMOTA KATSUHIRO
WATANABE HIROSHI
FUJIYAMA HAJIME
Application Number:
JP2015170774A
Publication Date:
March 09, 2017
Filing Date:
August 31, 2015
Export Citation:
Assignee:
SUMITOMO METAL MINING CO
International Classes:
C22B19/02; C22B1/00; C22B1/02; C22B7/02; F27B7/34
Domestic Patent References:
| JP2014162960A | 2014-09-08 | |||
| JP2014062304A | 2014-04-10 | |||
| JPS6344041U | 1988-03-24 | |||
| JPS484624U | 1973-01-19 | |||
| JPS62148831U | 1987-09-19 | |||
| JP2001280608A | 2001-10-10 | |||
| JP2008297623A | 2008-12-11 |
Foreign References:
| CN101680044A | 2010-03-24 | |||
| EP2169081A1 | 2010-03-31 | |||
| KR20100024922A | 2010-03-08 |
Attorney, Agent or Firm:
Masayuki Masabayashi
Hayashi Ichiyoshi
Hayashi Ichiyoshi