Title:
METHOD FOR SMELTING LEAD
Document Type and Number:
Japanese Patent JP3850171
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve the treating capacity in the existing equipment even in the case of increasing a zinc leaching residue as the treating object by executing a concentrating process of float with plural sets of thickeners connected with a series in the case of extracting a lead concentrate through a lead floatation and the concentrating process of the float.
SOLUTION: Tailing of copper floatation is supplied to the lead floatation, and a Pb-rich float is extracted. The Pb-rich float comes into a first float- thickener 5 and the overflow is fed to a second copper thickener at the copper side to obtain an under-flow pulp as the lead concentrate. The lead concentrate comes in a second floatation thickener 6 to obtain an under-flow pulp as an enriched lead concentrate. The enriched lead concentrate comes in a mixing thickener 7 together with lead source of a lead sulfate, lead slag, etc. as by- product in a smelting plant and the under-flow pulp is dehydrated with a filter press 8 to obtain the mixed lead sulfate. The lead sulfate is charged into a leas electric furnace after drying in order with rotary dryers 9, 10 connected with the series.
Inventors:
Shinsuke Nakatani
Kumagai Kazuo
Satoshi Nakagawara
Kumagai Kazuo
Satoshi Nakagawara
Application Number:
JP15751899A
Publication Date:
November 29, 2006
Filing Date:
June 04, 1999
Export Citation:
Assignee:
DOWA MINING CO.,LTD.
Kosaka Smelting Co., Ltd.
Kosaka Smelting Co., Ltd.
International Classes:
B09B5/00; C02F11/00; C22B13/00; C02F11/12; C22B3/44; C22B7/00; C22B15/00; C22B19/20; (IPC1-7): C22B13/00; B09B5/00; C02F11/00; C02F11/12; C22B3/44; C22B7/00; //C22B15/00; C22B19/20
Domestic Patent References:
| JP52035197A | ||||
| JP11124636A | ||||
| JP63128138A |
Attorney, Agent or Firm:
Kenji Wada
Koji Hagiwara
Koji Hagiwara