Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Mica Beneficiation.

Authors
Browning-J
Source
NTIS: PB 218 142 :21 pages
Link
NIOSHTIC No.
10008872
Abstract
The Bureau of Mines conducted laboratory and continuous process development work on weathered mica pegmatites and micaceous schist ores to determine the feasibility of recovering commercial-grade mica concentrates by flotation. The research resulted in the development of two processes for flotation of mica: an acid cationic method for recovery of coarse mica, and an alkaline anionic- cationic method for recovery of fine mica. The research indicated that the two processes may be effectively utilized separately or in combination for flotation of mica from weathered pegmatites and micaceous schists. Concentrates containing over 98 percent mica, with recoveries ranging from 77 to 92 percent, were obtained from the pegmatite ores. The micaceous schist ores yielded concentrates containing 95 to 98 percent mica, with recoveries ranging from 70 to 83 percent. This report summarizes the process development work and demonstrates the feasibility of producing commercial-grade mica concentrates. It also includes details of commercial beneficiation and grinding of mica.
Publication Date
19730101
Document Type
IH;
Fiscal Year
1973
NTIS Accession No.
PB-218142
NTIS Price
A03
Identifying No.
B 662
NIOSH Division
TURC;
Source Name
NTIS: PB 218 142
TOP