Title:
【発明の名称】亜鉛、鉛、水銀及び塩素を含有する物質の処理方法
Document Type and Number:
Japanese Patent JP2894477
Kind Code:
B2
Abstract:
PURPOSE:To use the molten fly ash contg. zinc, lead, mercury and chlorine as the secondary material for nonferrous metal refining without discarding the fly ash to reclamation. CONSTITUTION:The molten fly ash is leached with water in the presence of an oxidizing agent to separate zinc and mercury into the filtrate and lead into the residue. The filtrate regulated to pH1.5 to 3.5 is then brought into contact with sodium hydrosulfide to separate zinc into the filtrate and mercury into the residue.
Inventors:
TAKAZAWA YOICHI
YONEDA JUICHI
MONZEN KANEHIRO
SHIBATA HIROMI
YONEDA JUICHI
MONZEN KANEHIRO
SHIBATA HIROMI
Application Number:
JP17695794A
Publication Date:
May 24, 1999
Filing Date:
July 28, 1994
Export Citation:
Assignee:
NITSUKO KINZOKU KK
International Classes:
A62D3/33; A62D3/36; A62D3/38; B09B3/00; C22B13/00; C22B19/00; C22B19/20; C22B43/00; A62D101/08; A62D101/43; (IPC1-7): C22B19/00; B09B3/00; C22B13/00
Domestic Patent References:
| JP7214029A |
Attorney, Agent or Firm:
Murao Takuo