METHOD FOR SELECTIVELY RECOVERING ARSENIC-CONTAINING COPPER MINERAL, AND FLOTATION AGENT USED IN SAME

WIPO Patent Application WO/2022/044599

A1

In order to decrease arsenic, which is a harmful substance, in a copper concentrate, provided is a method for selectively recovering an arsenic-containing copper mineral from a mixture including the arsenic-containing copper mineral and a non-arsenic-containing copper mineral, and a flotation agent used in the same.　For a collecting agent, which is a component of the flotation agent used in a flotation step for selectively recovering the arsenic-containing copper mineral from the mixture including the arsenic-containing copper mineral and the non-arsenic-containing copper mineral, a sulfide compound having an R1-S-R2 (in this expression, R1 is a C5-10 alkyl group, and R2 is a C1-10 alkyl group) structure such as methyl n-octyl sulfide or di-n-octyl sulfide is used.

WO/2017/116542	MIXED DECYL MERCAPTANS COMPOSITIONS AND USE THEREOF AS MINING CHEMICAL COLLECTORS
WO/2006/037206	ARSENIDE DEPRESSION IN FLOTATION OF MULTI-SULFIDE MINERALS
WO/1986/006983	NOVEL COLLECTORS FOR THE SELECTIVE FROTH FLOTATION OF SULFIDE MINERALS

KAMIYA TARO (JP)
KONNO KOSUKE (JP)
ONO TATSUHIRO (JP)
MAGWANENG REFILWE (JP)
BABA YOSHINARI (JP)
ATAE KUNIKO (JP)

PCT/JP2021/026559

March 03, 2022

July 15, 2021

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JAPAN OIL GAS & METALS JOGMEC (JP)
UNIV MIYAZAKI (JP)

B03D1/012; B03D1/02; C22B15/00; B03D101/02; B03D103/02

JPS63100961A	1988-05-06
JP2020104095A	2020-07-09
JP2012241249A	2012-12-10
JP2013209719A	2013-10-10
JP2021074640A	2021-05-20

ASAMURA PATENT OFFICE, P.C. (JP)

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