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Technical Resource Document

By Environmental Protection Agency

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Book Id: WPLBN0000000495
Format Type: PDF eBook
File Size: 0.6 MB
Reproduction Date: 2007

Title: Technical Resource Document  
Author: Environmental Protection Agency
Volume:
Language: English
Subject: Ecology, Natural resource issues, Environemtal protection
Collections: Environmental Awareness Library Collection
Historic
Publication Date:
Publisher: United States Environmental Protection Agency

Citation

APA MLA Chicago

Agency, E. P. (n.d.). Technical Resource Document. Retrieved from http://gutenberg.cc/


Description
Excerpt: This document was prepared by the U.S. Environmental Protection Agency (EPA). The mention of company or product names is not to be considered an endorsement by the U.S. Government or the EPA.

Table of Contents
TABLE OF CONTENTS Page DISCLAIMER AND ACKNOWLEDGEMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i 1.0 MINING INDUSTRY PROFILE: IRON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.2 ECONOMIC CHARACTERIZATION OF THE INDUSTRY . . . . . . . . . . . . . . . . . . . . 1-3 1.3 ORE CHARACTERIZATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 1.3.1 Bedded Sedimentary Deposits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10 1.3.1.1 Banded Iron-Formations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10 1.3.1.2 Ironstone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10 1.3.2 Igneous Activity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11 1.3.3 Surface And Near-Surface Weathering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11 1.4 IRON MINING PRACTICES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12 1.4.1 Extraction Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12 1.4.2 Beneficiation Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14 1.4.2.1 Milling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16 1.4.2.2 Magnetic Separation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17 1.4.2.3 Flotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21 1.4.2.4 Gravity Concentration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24 1.4.2.5 Thickening/Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24 1.4.2.6 Agglomeration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26 1.5 WASTES AND OTHER MATERIALS ASSOCIATED WITH IRON ORE EXTRACTION AND BENEFICIATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30 1.5.1 Extraction and Beneficiation Wastes and Materials . . . . . . . . . . . . . . . . . . . . 1-31 1.5.1.1 Waste Rock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31 1.5.1.2 Milling Dust Control Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31 1.5.1.3 Magnetic Separation Wastes and Materials . . . . . . . . . . . . . . . . . . 1-31 1.5.1.4 Flotation Wastes and Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31 1.5.1.5 Gravity Concentration Wastes and Materials . . . . . . . . . . . . . . . . . 1-32 1.5.1.6 Agglomeration Wastes and Materials . . . . . . . . . . . . . . . . . . . . . . . 1-32 1.5.1.7 Mine Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-32 1.5.2 Waste and Materials Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33 1.5.2.1 Waste Rock and Ore Piles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33 1.5.2.2 Tailings Impoundments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33 1.5.2.3 Mine Pits and Underground Workings . . . . . . . . . . . . . . . . . . . . . . 1-35 1.6 ENVIRONMENTAL EFFECTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36 1.6.1 Ground Water/Surface Water . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-36 1.6.2 Soil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-37 1.6.3 Air . . . . . . . . . . .

 
 



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