酸化亜鉛鉱の製造方法

Japanese Patent JP6447423

B2

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

Shintaro Komori
Katsuhiro Tomoda
Hiroshi Watanabe
Fujiyama

JP2015170774A

January 09, 2019

August 31, 2015

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Sumitomo Metal Mining Co., Ltd.

C22B19/02; C22B1/00; C22B1/02; C22B7/02; F27B7/34

JP2014162960A
JP2014062304A
JP63044041U
JP48004624U
JP62148831U
JP2001280608A
JP2008297623A

EP2169081A1
KR1020100024922A
CN101680044A

Masayuki Masabayashi
Hayashi Ichiyoshi

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