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Fluorine and Uranium in Phosphate Rock Processing and Waste Materials.

Authors
Haynes-BW; Kramer-GW; Jolly-JA
Source
MISSING :17 pages
Link
NIOSHTIC No.
10006745
Abstract
Materials from phosphate rock mining and processing were analyzed for fluorine and uranium content as part of the Bureau of Mines program to more effectively recover resources from mining and mineral processing reject materials. The analysis of both feed and waste materials generated in the beneficiation and acidulation of phosphate rock was performed to obtain information on the disposition and concentration of these elements in phosphate rock processing streams. Fluorine was determined by a distillation- titration method and by ion chromatography. Uranium was determined by the dibenzoylmethane (dbm) method, the reliability being confirmed by roundrobin analysis of samples within Bureau of Mines research centers. National Bureau of Standards (NBS) standard reference material (SRM) 120b-phospahte rock was also analyzed for fluorine and uranium to verify procedures and results. Fluorine values ranged from 0.3 wt-pct in gypsum filter cake to 3.7 wt-pct in phosphate rock concentrate. Uranium ranged from less than 5 ug/g in gypsum filter cake to 200 ug/g in a dried clay slime.
Publication Date
19810101
Document Type
IH; Report of Investigation;
Fiscal Year
1981
NTIS Accession No.
NTIS Price
Identifying No.
RI 8576
NIOSH Division
AVRC;
Source Name
MISSING
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