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Flotation of Carbonate Minerals from Unaltered Phosphate Ores of the Phosphoria Formation.

Authors
Rule AR; Clark CW; Butler MO
Source
NTIS: PB 233 495 :18 pages
Link
NIOSHTIC No.
10009230
Abstract
A flotation process was developed by the Bureau of Mines for separation of carbonate and phosphate minerals, occurring in unaltered phosphate ores of the phosphoria formation. The process involves depression of phosphate minerals with fluosilicic acid and flotation of carbonate minerals with fatty acid emulsions. In individual laboratory tests, selective removal of carbonates was achieved with phosphate recoveries ranging from 60 to 80 pct p2o5. In continuous-circuit testing, sizing and separate treatment of coarse and fine fractions was necessary to achieve 65-pct p2o5 recovery. Concentrate grade ranged from 26 to 33 pct p2o5. The flotation tailings containing primarily carbonate and phosphate minerals are a potential fertilizer material. When reacted with h3po4, concentrated superphosphate containing approximately 40 pct available p2o5 was obtained.
Publication Date
19740101
Document Type
IH; Report of Investigations
Fiscal Year
1974
NTIS Accession No.
PB-233495
NTIS Price
A03
Identifying No.
RI 7864
NIOSH Division
ALRC;
Source Name
NTIS: PB 233 495
Page last reviewed: May 11, 2023
Content source: National Institute for Occupational Safety and Health Education and Information Division