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The Effects Of Design And Operating Variables On Rod Mill Performance (7f523b40-68c0-40b6-8014-dcae9940ff7e)
This paper describes major technical developments in rod mill design and operating practice since its introduction into the North American minerals industry over fifty years ago. The basic operating c
Jan 1, 1986
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Analysis Of Sampling And Slurry Flow Using Multi-Physics Modeling - Preprint 09-058
By D. McBride
Representative samples are required from process streams in order to accurately measure chemical and physical characteristics. This information can then be used by process operators and metallurgists
Jan 1, 2009
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Boart Longyear 4200 Surface Drill Features Improved Safety
Safety is the No. 1 concern of any drill contractor or mine operator. Everyone in the industry knows a safe site helps stabilize operational costs and enables higher productivity. When it comes to ex
Jan 1, 2009
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Performance Of A Soft Ground Tunnel On The Washington Metro
By Edward J. Cording, William H. Hansmire
INTRODUCTION The Washington Metro, a rapid transit system that will serve the District of Columbia, Virginia, and Maryland, has been under construction for about two years. Construction of the Metr
Jan 1, 1997
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Chemical Controls On The Bioavailability Of Cyanide - Introduction
By A. Redman
Aquatic organisms are sensitive to free cyanide (HCN) though the presence of certain metals that can form stable complexes and thereby reducing both the amount of bioavailable cyanide. Recent work ha
Jan 1, 2011
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Development of a Smelting Reduction Process for Low-Grade Ferruginous Manganese Ores to Produce Valuable Synthetic Manganese Ore and Pig Iron "Mining, Metallurgy & Exploration (2020)"
By Veerendra Singh, NILAMADHABA SAHU, ARIJIT BISWAS
Manganese alloys are important raw materials for steelmaking. However, selective mining of high-grade manganese ore resources has resulted in a scarcity of these high-grade Mn ores (Mn: >42; Mn/Fe: >5
Aug 3, 2020
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Exploration remains hot
As metal prices fluctuated over the years, so too have the fortunes of many of those mining in Canada?s Yukon province. With a rich mining history that dates back to the Klondike gold rush of 1896 to
Jan 1, 2010
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Installation Of 0.84 M (33 In) Cyclones On The Primary Grinding Circuit At Cyprus Sierrita Corporation
By L. N. Hill
The classifiers on the primary grinding circuit at Cyprus Sierrita have been upgraded from 0.66 m (26 in) diameter hydrocyclones to 0.84 m (33 in) diameter hydrocyclones. This has resulted in a 4.3 %
Jan 1, 1994
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Mine Modeling Software for Less Than $1000 – Usefulness and Limitations
By Betty L. Gibbs
Geologically simple deposits can be modeled quickly and easily with inexpensive gridding and mapping software. Hundreds of mines around the world use RockWorks99 and Surfer 7 for generating contour m
Jan 1, 2000
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Mining 1988
By J. D. Morgan
The US economy continued to grow steadily in 1988, reaching an annual rate of $5 trillion in the last quarter (US trillion = 1012). The value of domestically processed mineral-based materi¬als rose 20
Jan 1, 1989
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Regulatory Toxicology And Pharmacology - Rapporteur?s Report - Session II: Characterization Of Fibrous Minerals
The central question concerning the health risks associated with mining and processing of taconite ores in the Eastern Mesabi Range is ??does asbestos, of any variety, occur within the gangue mineral
Jan 1, 2008
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South African Gold Production: How Long the Dominant Factor?
By Edward H. Jr. Boyle, Paul R. Thomas
Introduction It is estimated that nearly 40% of all the gold ever mined in free world countries has been produced by South African operations. There is concern that this immense productive capacity w
Jan 11, 1984
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Radon-222 Emission In Ventilation Air Exhausted From Underground Uranium Mines
By W. I. Enderlin, P. O. Jackson, J. A. Glissmeyer, K. B. Olsen
A reliable estimate of radon emissions to the environment from underground uranium mines was obtained through measurements of radon in ventilation air at 24 mines and from estimates of radon release f
Jan 1, 1981
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Optimization of Surface Mining Dig Limits with a Practical Heuristic Algorithm Mining, Metallurgy and Exploration (e8f12701-6e05-4369-9a27-d2734d7cf05f)
By Y. V. Vasylchuk
This paper presents an algorithm for optimizing the classification of surface mine material subject to excavating constraints. High-resolution expected profit models are input and optimized to classif
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Optimization of Surface Mining Dig Limits with a Practical Heuristic Algorithm Mining, Metallurgy and Exploration
By Y. V. Vasylchuk
This paper presents an algorithm for optimizing the classification of surface mine material subject to excavating constraints. High-resolution expected profit models are input and optimized to classif
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Recovery of Valuable Elements from Chinese Coal By-Products
By M. Fan, Z. Long
"This paper presents some studies on recovering valuable elements from Chinese coal by-products, including coal combustion fly ash, stone coal ash, and coal flotation tailings. Both commercialized tec
Jan 1, 2017
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Operational Practices To Reduce Copper And Other Metals Loading Onto Activated Carbon In Heap Leach CIC Circuits - Introduction - Preprint 09-109
By B. Cousins
Copper, nickel, zinc and other ?penalty? metals are found with gold together in nature, and have a similar chemical affinity for cyanide used in leaching operations4. As a result, solutions that come
Jan 1, 2009
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Industrial Minerals 2007
Editor?s note: Each year, the June issue of Mining Engineering features an industrial minerals review. Several people put in a fair amount of time in developing the material for this issue. Thank y
Jan 1, 2008
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Processing Of Manganese Nodule Leach Liquor For The Separation Of Cobalt And Nickel Using PC 88A
By S. Panigrahi
The SO2-ammoniacal ammonium sulfate leach liquor generated by leaching of manganese nodules, after removal of minor quantities of iron and manganese, contained copper, nickel, cobalt, zinc and (NH4)2S
Jan 1, 2009
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Full NAT 2024 Proceedings - NAT2024
By SME SME
NORTH AMERICAN TUNNELING 2024 PROCEEDINGS
Jun 23, 2024