Title:
２段階のドロスの処理
Document Type and Number:
Japanese Patent JP7328370
Kind Code:
B2
Abstract:
A two stage dross treatment capable of being performed in a single reaction vessel is disclosed. Dross, especially white dross, can be contacted with salt flux in a rotary furnace to recover metal from the dross. This first stage can recover metal during the conversion of white dross and salt flux to salt cake. In a second stage, the furnace can be raised to a sufficiently high temperature to evaporate the salt content of the salt cake, allowing the evaporated salt to exit the furnace and be separately condensed and collected. The result of the second stage is collected salt and salt-free oxides. After removing the salt-free oxides, residual heat in the furnace and collected salt can be used for a subsequent dross treatment.
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Inventors:
Doottle, Don Allen
Hey Gary Richard
Hey Gary Richard
Application Number:
JP2021576695A
Publication Date:
August 16, 2023
Filing Date:
June 26, 2020
Export Citation:
Assignee:
NOVELIS INC.
International Classes:
C22B7/00; C22B1/02; C22B21/00
Domestic Patent References:
| JP2003138320A | ||||
| JP2022538250A |
Foreign References:
| US4523949 |
Attorney, Agent or Firm:
Atsushi Aoki
Shinji Mihashi
Nobuo Sekine
Shujiro Aoki
Satoshi Murakami
Hajime Kawahara
Shinji Mihashi
Nobuo Sekine
Shujiro Aoki
Satoshi Murakami
Hajime Kawahara