Precious Metals Recovery from Low-grade Resources

Precious Metals Recovery from Low-grade Resources
Author:
Publisher:
Total Pages: 68
Release: 1985
Genre: Precious metals
ISBN:

This information circular describes research the Bureau of Mines has conducted to improve technology for recovering precious metals from low-grade resources. Many of the reported findings are recent, and some of te work described is ongoing. Topics discussed include cyanidation of carbonaceous gold ores to enhance gold recovery, a new method for precipitating mercury during cyanide leaching of gold ores, a staged heap leaching process to generate suitable solutions for direct electrowinning of gold, the use of anion-exchange resins to recover gold from cyanide solutions, and precious metals recovery from electronic scrap.

Metal Recycling

Metal Recycling
Author:
Publisher: UN
Total Pages: 0
Release: 2013
Genre: Political Science
ISBN: 9789280732672

Metal recycling is a complex business that is becoming increasingly difficult! Recycling started long ago, when people realized that it was more resource- and cost-efficient than just throwing away the resources and starting all over again. In this report, we discuss how to increase metal-recycling rates - and thus resource efficiency - from both quantity and quality viewpoints. The discussion is based on data about recycling input, and the technological infrastructure and worldwide economic realities of recycling. Decision-makers set increasingly ambitious targets for recycling, but far too much valuable metal today is lost because of the imperfect collection of end-of-life (EoL) products, improper practices, or structural deficiencies within the recycling chain, which hinder achieving our goals of high resource efficiency and resource security, and of better recycling rates.

Changing Scopes in Mineral Processing

Changing Scopes in Mineral Processing
Author: M. Kemal
Publisher: CRC Press
Total Pages: 740
Release: 1996-01-01
Genre: Technology & Engineering
ISBN: 9789054108290

More than 100 papers originating from 24 countries report the most recent advances in mineral processing and related fields. They represent a coherent combination of subjects from such diverse areas as communication classification, gravity, magnetic and electrostatic separation, flotation fundamentals and technology, hydrometallurgy, coal processing, industrial minerals, gold and silver, modeling, simulation and control, dewatering, agglomeration. Conventional and column flotation, reagent-surface interactions, handling of cyanide containing leach liquors in gold recovery processing of industrial minerals, especially boron minerals, and of coal receive special emphasis. The book is anticipated to be a reference material for those who practice mineral processing, coal preparation, hydrometallurgy, surface chemistry and environmental remediation. .

Gold Metallurgy and the Environment

Gold Metallurgy and the Environment
Author: Sadia Ilyas
Publisher: CRC Press
Total Pages: 246
Release: 2018-02-19
Genre: Science
ISBN: 1351367420

This book gives an overview of all the gold extraction processes along with their mechanistic study and environmental impact. Reviews extraction techniques previously employed as well as recently evolved technology for gold leaching, provides technical flow sheets for processing of ores with a diversity of lixiviants and offers a compulsory overview of every gold processing technique It also discusses recent integrated techniques including hydro- and bio-metallurgical techniques with examples

Monthly Catalog of United States Government Publications

Monthly Catalog of United States Government Publications
Author: United States. Superintendent of Documents
Publisher:
Total Pages: 960
Release: 1986
Genre: Government publications
ISBN:

February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index