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Beneficiation of High-magnesium Phosphate from Southern Florida.

Authors
Llewellyn-TO; Davis-BE; Sullivan-GV; Hansen-JP
Source
MISSING :16 pages
Link
NIOSHTIC No.
10006326
Abstract
The Bureau of Mines, as part of its goal to develop technology that can conserve domestic mineral resources investigated beneficiation methods for recovering phosphate minerals from two southern Florida deposits with high magnesium content. Chemical analyses of sized fractions indicated that no coarse pebble concentrate could be produced from either deposit. Conventional fatty acid-fuel oil batch flotation tests on two phosphate samples, analyzing 6.8 And 8.5 pct p2o5, yielded concentrates containing 28.97 to 29.80 pct p2o5 at recoveries ranging from 72.4 to 76.9 pct of the flotation feed. The mgo content ranged from 1.20 to 1.36 pct. Bubbling so2 gas through an aqueous concentrate slurry, further reduced the mgo content of these phosphate concentrates to 0.5 and 0.8 pct, but with a concomitant loss in the phosphate recovery. Settling characteristics of slimes from both phosphate samples showed a slow settling rate, which is a typical characteristic of other slimes in the region.
Publication Date
19820101
Document Type
IH; Report of Investigations
Fiscal Year
1982
NTIS Accession No.
NTIS Price
Identifying No.
RI 8609
NIOSH Division
TURC;
Source Name
MISSING
State
FL;
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