Title:
METHOD FOR PRODUCING LOW-ARSENIC COPPER CONCENTRATE
Document Type and Number:
WIPO Patent Application WO/2022/181742
Kind Code:
A1
Abstract:
When copper concentrate is to be produced through ore floatation for separating copper minerals and arsenic minerals by using an oxidizer and a sulfur oxoacid, the present invention reduces arsenic in the copper concentrate by using a simple method. According to the present invention, when copper concentrate is to be produced through ore floatation using arsenic-containing copper ore as a material, a sulfur oxoacid and hydrogen peroxide serving as an oxidizer are used in combination as additive chemical agents in the stated order.
Inventors:
EBISU YOUSUKE (JP)
SAITO TAMAKI (JP)
MITSUHASHI KOHEI (JP)
SAITO TAMAKI (JP)
MITSUHASHI KOHEI (JP)
Application Number:
PCT/JP2022/007778
Publication Date:
September 01, 2022
Filing Date:
February 25, 2022
Export Citation:
Assignee:
NITTETSU MINING CO LTD (JP)
International Classes:
B03D1/002; C22B1/11; C22B15/00; B03D101/02; B03D101/06; B03D103/02
Domestic Patent References:
| WO2017110462A1 | 2017-06-29 |
Foreign References:
| US7004326B1 | 2006-02-28 | |||
| JP2020104095A | 2020-07-09 | |||
| US20180258510A1 | 2018-09-13 | |||
| JPS486902A | 1973-01-29 |
Attorney, Agent or Firm:
MOEGI PATENT OFFICE (JP)
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