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Beneficiation of Low Grade Appalachian Iron Ores to Recover Enriched Iron Concentrates.

Hanna HS; Anazia IJ
For Reference Only At Bureau Libraries :126 pages
The feasibility of applying fine grinding and fine particle processing technology, as practiced in the Lake Superior Region, to the low-grade, high-phosphorus red iron ores of the Southeastern Appalachian Region to recover iron ore products of a quality suitable for smelting competitively with imported materials is discussed. The application of new or improved processing technology or approaches embracing extremely fine grinding to achieve maximum liberation of the iron oxides and gangue constituents also is discussed. The research involved two principal lines. One emphasized the development of fundamental data relating to the fine grinding, sizing, and liberation characteristics of the ores to gain a better understanding of the most effective beneficiation approaches for separating the iron oxide and gangue minerals. The second focused on determining the merits of various beneficiation methods or combined techniques that would yield maximum recoveries of plus 60% iron products. Among the techniques applied were flotation, selective flocculation, reductive roasting and magnetic separation, magnetic flocculation, and hydrocyclone concentration.
Publication Date
Document Type
CP; Final Contract Report;
Fiscal Year
Identifying No.
OFR 87-83
NIOSH Division
Source Name
For Reference Only At Bureau Libraries
Performing Organization
U. of Al
Page last reviewed: November 12, 2021
Content source: National Institute for Occupational Safety and Health Education and Information Division