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Beneficiation of Nonmagnetic Taconites by Selective Flocculation- cationic Flotation.

Authors
Colombo-AF; Jacobs-HD
Source
NTIS: PB 261 337 :17 pages
Link
NIOSHTIC No.
10007811
Abstract
The Western Mesabi Range nonmagnetic taconites containing about 34 percent fe were evaluated by the Bureau of Mines in a 900-pound-per- hour pilot plant employing a selective flocculation-desliming- cationic flotation technique. The flotation step was a reverse flotation process and involved the flotation of the gangue minerals. The objective of the research was to increase the availability of domestic raw materials for the iron and steel industry. The beneficiated ores yielded concentrates containing 62 to 64 percent fe and less than 5.5 percent sio2 with accompanying iron recoveries that averaged about 75 percent. Comparable flotation results were obtained with either fresh or 80 to 90 percent reclaimed water. Recycled waters having turbidities as high as 5,000 ppm sio2 did not affect the flotation process. Reclaimed waters containing residual calcium contents of less than 10 ppm gave better flotation concentrates than those containing 15 ppm.
Publication Date
19760101
Document Type
IH; Report of Investigation;
Fiscal Year
1976
NTIS Accession No.
PB-261337
NTIS Price
A03
Identifying No.
RI 8180
NIOSH Division
TCRC;
Source Name
NTIS: PB 261 337
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