ZINC OXIDE ORE PRODUCTION METHOD

Japanese Patent JP2014162960

A

PROBLEM TO BE SOLVED: To provide a zinc oxide ore production method which produces zinc oxide ore from halogen-containing ore, and can produce high-quality zinc oxide ore by maintaining a sufficiently desirable halogen removal rate while performing operation at a lower temperature than that of a conventionally well-known operation condition.SOLUTION: In a zinc oxide ore production method including a drying and heating step of firing halogen-containing ore using a rotary kiln 1, an inner wall of the rotary kiln 1 is installed with a lifter part 13 capable of scraping up the halogen-containing ore, the total amount (G) of contact of the halogen-containing ore with an air flow in a furnace, which is a value obtained by multiplying the contact ratio (R) of the halogen-containing ore with an air flow in a furnace by the air flow contact improvement ratio (L) by partial scraping up of the halogen-containing ore by the lifter part 13, is adjusted to 3.5 or more, and firing temperature is adjusted to 900°C or more and 1,200°C or less to perform firing of the halogen-containing ore.

WO/1996/029439	ATMOSPHERIC MINERAL LEACHING PROCESS
WO/1997/000333	THE PROCESSING OF ZINC BEARING MATERIALS IN A DC ARC FURNACE
JPS529602	TREATMENT PROCESS OF POWDER CONTAINING METAL

KUSAKABE TAKESHI
WATANABE HIROSHI
IHARA YOSHIAKI
FUJIYAMA HAJIME
KOMORI SHINTARO

JP2013035673A

September 08, 2014

February 26, 2013

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SUMITOMO METAL MINING CO

C22B19/02; C22B1/02

JP2003147450A	2003-05-21
JP2001091159A	2001-04-06
JP2003207270A	2003-07-25
JP2003147450A	2003-05-21
JP2001091159A	2001-04-06
JP2003207270A	2003-07-25

Right wood Masayuki
Wood Kazuyoshi

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