Title:
酸性鉄塩溶液からの酸化鉄の沈殿
Document Type and Number:
Japanese Patent JP5374040
Kind Code:
B2
Abstract:
Improved methods for treating metallurgical compositions involve reacting a metallurgical composition with an aqueous nitric acid solution. The reaction is performed at a pressure of at least about 220 psig and at a temperature of at least 100° C. The metallurgical composition comprises iron and one or more non-ferrous metals. The reaction dissolves the majority of the non-ferrous metal compositions into the solution which is in contact with solid ferric oxide. The reaction can be repeated on the isolated solids to increase the purity of ferric oxide in the solids. Zinc can be removed from the mixed metal solutions obtained from furnace dust by a variety of separation techniques.
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Inventors:
Koningen, Darren
Frund, William Jay.
Dreizinger, David Bruce
Frund, William Jay.
Dreizinger, David Bruce
Application Number:
JP2007509841A
Publication Date:
December 25, 2013
Filing Date:
April 29, 2005
Export Citation:
Assignee:
Metalox International
International Classes:
C22B3/04; B01D9/02; C01G49/06; C22B1/00; C22B3/06; C22B3/20; C22B3/22; C22B3/44; C22B7/00; C22B7/02; C22B19/28
Domestic Patent References:
| JP9227126A | ||||
| JP5208829A | ||||
| JP9075891A | ||||
| JP61168535A | ||||
| JP59021527A | ||||
| JP7109122A |
Attorney, Agent or Firm:
Takashima Ichi