Title:
Valuable metal recovery method
Document Type and Number:
Japanese Patent JP6093232
Kind Code:
B2
Abstract:
The present invention provides a method for collecting a valuable metal, which enables a medium- to high-concentration cyan waste fluid to be treated at low cost and in a simple manner, and also enables a so-called valuable metal, e.g., a noble metal, a rare earth element and another metal, remaining in the waste fluid to be collected satisfactorily without causing the corrosion of a furnace. The present invention relates to a method for collecting a valuable metal, which comprises: burning a concentrate (101) of a waste fluid (100) containing a cyan compound, an inorganic carbonate salt and the valuable metal at 400 to 650°C; then separating the cyan in the form of a cyan gas (103) from the concentrate of the waste fluid (100); and then collecting the valuable metal from a burning residue (102).
Inventors:
Hiroyasu Sato
Asami Kobayashi
Asami Kobayashi
Application Number:
JP2013091266A
Publication Date:
March 08, 2017
Filing Date:
April 24, 2013
Export Citation:
Assignee:
Tanaka Kikinzoku Kogyo Co., Ltd.
International Classes:
C22B11/00; C02F1/58; C22B3/44
Domestic Patent References:
| JP49059076A |
Other References:
友野理平,実用めっきマニュアル,日本,株式会社オーム社,1971年10月25日,第1版,160,243
Attorney, Agent or Firm:
Patent business corporation glory patent office