Title:
選鉱方法
Document Type and Number:
Japanese Patent JP7385872
Kind Code:
B2
Abstract:
Provided is an ore dressing method that can obtain a low-arsenic-grade concentrate from a high-arsenic-grade starting material. The ore dressing method has: a repulping step for obtaining a mineral slurry by adding water to a starting material that contains an arsenic-free sulfide mineral, i.e., a sulfide mineral that does not contain arsenic, and an arsenic-containing sulfide mineral, i.e., a copper sulfide mineral that contains arsenic; a pH adjustment step for adjusting the pH of the liquid phase of the mineral slurry to at least 10; a conditioning step for adding an oxidizing agent and an alkali metal xanthate to the mineral slurry; and a flotation step for carrying out flotation using the mineral slurry to effect separation of the starting material into: a floating ore that has a higher grade of arsenic-free sulfide mineral than the starting material, and a sedimented ore that has a higher grade of arsenic-containing sulfide mineral than the starting material. The starting material contains 4.4-5.8 weight parts of arsenic per 100 weight parts of copper.
Inventors:
Go Hirashima
Hajime Miki
gudi pandi wisnu suyantara
Keiko Sasaki
Yoshiyuki Tanaka
Eri Takita
Hajime Miki
gudi pandi wisnu suyantara
Keiko Sasaki
Yoshiyuki Tanaka
Eri Takita
Application Number:
JP2021204786A
Publication Date:
November 24, 2023
Filing Date:
December 17, 2021
Export Citation:
Assignee:
Kyushu University
Sumitomo Metal Mining Co., Ltd.
Sumitomo Metal Mining Co., Ltd.
International Classes:
C22B1/11; B03D1/008; B03D1/012; C22B1/00; C22B15/00
Domestic Patent References:
| JP2020104095A | ||||
| JP2011156521A | ||||
| JP2010133004A | ||||
| JP2012241249A | ||||
| JP2021074640A | ||||
| JP2006239553A |
Attorney, Agent or Firm:
Patent Attorney Corporation Yamauchi Patent Office