EXHAUST GAS PROCESSING METHOD IN ZINC OXIDE ORE PRODUCTION PLANT

Japanese Patent JP2018079456

A

PROBLEM TO BE SOLVED: To provide an exhaust gas processing method in a zinc oxide ore production plant capable of efficiently and surely removing mercury from an exhaust gas exhausted from a zinc oxide ore production plant without increasing facility cost and the like.SOLUTION: In an exhaust gas processing method in a zinc oxide ore production plant 1,: activated carbon is blown into an exhaust gas exhausted by processing producing coarse zinc oxide dust by the reduction firing of steel dust; mercury contained in the steel dust is adsorbed in the activated carbon and recovered together with the coarse zinc oxide dust; wet processing is performed to a recovered material containing the coarse zinc oxide dust and the activated carbon in which mercury is adsorbed and a coarse zinc oxide cake is produced; mercury contained in the coarse zinc oxide cake is volatilized by firing the coarse zinc oxide cake; an oxidizer is sprayed into an exhaust gas containing volatilized mercury; and mercury is oxidized and removed.SELECTED DRAWING: Figure 2

TAKAYA SATORU
WATANABE HIROSHI
ETSUNO TETSUYA
SEKIKAWA TSUTOMU
ABE TAKEHARU
OGASAWARA MASAHIRO
SATO KENJI

JP2016225422A

May 24, 2018

November 18, 2016

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SUMITOMO METAL MINING CO
SUMITOMO METAL MINING ENG CO LTD

B01D53/64; C22B1/00; C22B1/02; F27D17/00

JP2015124389A	2015-07-06
JP2015202474A	2015-11-16
JP2006328451A	2006-12-07
JP2011056500A	2011-03-24
JP2012011317A	2012-01-19
JP2009166012A	2009-07-30
JPH07308542A	1995-11-28

WO2016153046A1	2016-09-29
US20060120935A1	2006-06-08

Masayuki Masabayashi
Hayashi Ichiyoshi

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