Title:
液体排出物の処理および金属の回収方法
Document Type and Number:
Japanese Patent JP5752794
Kind Code:
B2
Abstract:
Process for treating liquid effluents and recovering metals, comprising the steps of a) equalizing the liquid effluent; b) ) adding sulfides and metal precipitation in the form of metal sulfides; c) separating solid/liquid from the metal sulfides obtained in step (b) and forming a liquid phase (10) free of metals; the process for treating liquid effluents and recovering metals further comprising the following steps: d) adding amine solution in a ratio of 50 to 250 g/L to the liquid phase (10) with magnesium precipitation in the form of magnesium hydroxide Mg(OH)2; and e) recovering the amine by depletion and rectification.
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Inventors:
Salomao, Solino, Eveline
Roberto, Mattioli, Silva
Gerald, Lewis, Da, Silva
Clauson, de, sousa
Roberto, Mattioli, Silva
Gerald, Lewis, Da, Silva
Clauson, de, sousa
Application Number:
JP2013523444A
Publication Date:
July 22, 2015
Filing Date:
August 09, 2011
Export Citation:
Assignee:
VALE S.A.
International Classes:
C22B26/22; C01F5/08; C22B3/04; C22B3/44
Domestic Patent References:
| JP2009529031A | ||||
| JP2001179214A |
Foreign References:
| US20090180945 | ||||
| US7392848 | ||||
| US5587088 |
Attorney, Agent or Firm:
Hirohito Katsunuma
Yukitaka Nakamura
Noritaka Yokota
Hakoda Mitsuru
Yukitaka Nakamura
Noritaka Yokota
Hakoda Mitsuru