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Flotation of Pyrite from Coal.

Authors
Miller-KJ; Baker-AF
Source
NTIS: PB 208 015 :7 pages
Link
NIOSHTIC No.
10009762
Abstract
A two-stage froth flotation technique was developed in the laratory to separate fine-size pyrite from coal. The process consists of the initial flotation of a 15-percent solids coal slurry with a minimum of frother; the coarse, free pyrite and other refuse are removed in the tailings. The froth product from this first stage is then repulped and treated with a coal depressant, a pyrite promoter, and a frother to float the remaining fine-size pyrite or pyrite attached to coal particles. With the two-stage process, the pyrite sulfur content of a Lower Freeport bed coal sample was reduced from 1.78 percent to 0.75 percent in the first stage, and from 0.75 percent to 0.27 percent in the second stage with good clean coal recovery.
Publication Date
19720101
Document Type
IH;
Fiscal Year
1972
NTIS Accession No.
PB-208015
NTIS Price
A02
Identifying No.
TPR 51
NIOSH Division
PERC;
Source Name
NTIS: PB 208 015
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