Title:
CELLULOSE ACETATE FLAKES, AND GOLD RECOVERY METHOD AND CONCENTRATING METHOD USING SAME
Document Type and Number:
WIPO Patent Application WO/2024/095343
Kind Code:
A1
Abstract:
Cellulose acetate flakes according to the present invention comprise a cellulose acetate having an acetylation degree of 0.80-2.90 and having an average space velocity SV of higher than 1.0 h-1 as determined by a prescribed method. This gold recovery method comprises: creating a packed column by packing a cylindrical container with the cellulose acetate flakes; and passing a liquid containing gold ions through the packed column to cause the gold ions to be adsorbed on the cellulose acetate flakes.
Inventors:
SAKATA YUMI (JP)
SEKI YOSHIE (JP)
TANAKA KOUJI (JP)
SEKI YOSHIE (JP)
TANAKA KOUJI (JP)
Application Number:
PCT/JP2022/040793
Publication Date:
May 10, 2024
Filing Date:
October 31, 2022
Export Citation:
Assignee:
DAICEL CORP (JP)
International Classes:
C08B3/06; B01J20/24; C22B3/24; C22B11/00
Domestic Patent References:
| WO2014142166A1 | 2014-09-18 | |||
| WO2018139319A1 | 2018-08-02 | |||
| WO2021245832A1 | 2021-12-09 |
Foreign References:
| JP2017052961A | 2017-03-16 | |||
| JP2018119051A | 2018-08-02 | |||
| JP2021161320A | 2021-10-11 | |||
| JP2018119052A | 2018-08-02 | |||
| JPH06157601A | 1994-06-07 | |||
| JP2000212201A | 2000-08-02 | |||
| JP2000212202A | 2000-08-02 | |||
| JP2014109064A | 2014-06-12 | |||
| JPS63100140A | 1988-05-02 | |||
| JPS648227A | 1989-01-12 | |||
| JP2016040032A | 2016-03-24 |
Attorney, Agent or Firm:
ARCO PATENT & TRADEMARK ATTORNEYS (JP)
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