Title:
The golden recovery method and collection system by the chlorination volatilizing method
Document Type and Number:
Japanese Patent JP6164640
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method which enables efficient concentration separation and recovery of gold from a mixture containing a plurality of metals.SOLUTION: A gold recovery method based on the chloride volatilization method includes a first step of heating a mixture containing gold, metals other than gold and solid carbon to carry out a chloride volatilization treatment on the mixture in a chlorine atmosphere and a second step of recovering gold captured by the sold carbon after the first step. The attainment temperature of the mixture in the first step is 400-1,000°C, and, after the temperature of the mixture is raised to the attainment temperature in an inert gas atmosphere, the atmosphere is switched to a chlorine atmosphere while keeping the temperature of the mixture. The solid carbon is amorphous, and the method includes further a mixing step of mixing a raw material containing gold and metals other than gold with the solid carbon to obtain the mixture.
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Inventors:
Katsuyasu Sugawara
Takahiro Kato
Junichi Kazumazaki
Takahiro Kato
Junichi Kazumazaki
Application Number:
JP2013142916A
Publication Date:
July 19, 2017
Filing Date:
July 08, 2013
Export Citation:
Assignee:
Akita University
International Classes:
C22B11/02; B01J20/20; C22B9/02
Domestic Patent References:
| JP62256936A |
Foreign References:
| US3834896 |
Other References:
細井明他,塩化揮発法を利用した廃電子基板からの金属回収と揮発挙動の検討,日本金属学会誌,日本,日本金属学会,2012年 2月,第76巻、第2号,pp155-163,ISSN:0021-4876
Attorney, Agent or Firm:
Noriyuki Yamamoto
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