World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Technical Report Treatment of Cyanide Heap Leaches and Tailings

By Environmental Protection Agency

Click here to view

Book Id: WPLBN0000000492
Format Type: PDF eBook
File Size: 0.3 MB
Reproduction Date: 2007
Full Text

Title: Technical Report Treatment of Cyanide Heap Leaches and Tailings  
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 Report Treatment of Cyanide Heap Leaches and Tailings. Retrieved from http://www.worldebooklibrary.net/


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. This Technical Resource Document consists of two sections. The first section is EPA's Profile of the lead-zinc industry; the remaining section is a Site Visit Report from a site visit conducted by EPA. The Technical Report was distributed for review to the U.S. Department of the Interior's Bureau of Mines and Bureau of Land Management, the U.S. Department of Agriculture's Forest Service, the Western Governors Association, the Interstate Mining Compact Commission, and the American Mining Congress. EPA is grateful to all individuals who took the time to review sections of this Technical Report Document. The use of the terms extraction, beneficiation, and mineral processing in this document is not intended to classify any waste streams for the purposes of regulatory interpretation or application. Rather, these terms are used in the context of common industry terminology.

Table of Contents
TABLE OF CONTENTS Page TREATMENT OF CYANIDE HEAP LEACHES AND TAILINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2. CYANIDE LEACHING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.1 Heap Leaching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.2 Tank Operations (Carbon-in-Pulp and Carbon-in-Leach) . . . . . . . . . . . . . . . . . . . . . 3 3. CYANIDE TREATMENT TECHNOLOGY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3.1 Rinsing of Heaps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3.2 Sulfur Processes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.3 INCO Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.4 Noranda Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.5 Alkaline Chlorination Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 3.6 Hydrogen Peroxide Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.7 AVR Cyanide Recovery Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 3.8 Biological Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.8.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.9 Homestake Mine, South Dakota . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 3.10 Pintail's Biotreatment Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 3.11 Natural Degradation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 4. OTHER RELATED ISSUES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.1 Closure and Reclamation Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.1.1 Analytical Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4.1.2 Mobility of Constituents In Heaps and Impoundments . . . . . . . . . . . . . . . 19 4.1.3 Reduction of Constituents in Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 4.1.4 Rinsing/Treatment Duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4.1.5 Water Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 4.1.6 Percolation of Solution through Heaps . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 4.1.7 Acid Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5. REGULATORY PROGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5.1 Federal Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 5.1.1 Environmental Protection Agency - NPDES Program . . . . . . . . . . . . . . . . 23 5.1.2 Bureau of Land Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 5.1.3 U.S. Forest Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 5.1.4 National Park Service . . . . . . . . . . . . . . . . . . . . . . . . . . .

 

Click To View

Additional Books


  • United States Environmental Protection A... (by )
  • Action Plan for Follow-Up Activity (by )
  • Preparing No-Migration Demonstrations fo... (by )
  • Fresno, Ca Urbanized Area Storm Water En... (by )
  • Superfund Division (Supr) Region 7 Organ... (by )
  • Murfreesboro, Tennessee Urbanized Area S... (by )
  • Highway Diesel Progress Review Report 2 (by )
  • United States Environmental Protection A... (by )
  • Environmental Protection Agency Indian P... (by )
  • E-Government Strategy (by )
  • United States Environmental Protection A... (by )
  • United States Environmental Protection A... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.