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Phase Transformation Of Andalusite And Its Impacts On Refractory Brick Reinforcement
By Bowen Li
Andalusite is an excellent raw material for refractory applications due to its high aluminum oxide content and phase transformation to mullite at high temperature. Granular andalusite in particle size
Jan 1, 2006
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Performance Update Of Hot Dip Galvanizing In The Corrosive Environment Of South African Gold Mines
By R. E. Wilmot
This paper is based on the experiences, over many years, on the part of numerous authors in the South African mining industry and that of the hot dip galvanizing process and its application as a corro
Jan 1, 2006
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The Formation Of Misty Band Near The Substrate During Contact Angle Measurement
By Linli Wu
During the measurement of contact angle, a misty band was observed near the substrate. Hsien-Nan Ho and Shinn-Tyan Wu thought this was because the oxygen atoms on the interface migrate to the droplet
Jan 1, 2006
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Flash Flotation Circuit Design Considerations
"The first SkimAir flash flotation cell was installed in Outokumpu’s Hammaslahti Copper Concentrator in 1982 to prevent overgrinding of soft sulphides in the milling circuit. Since this first installa
Jan 1, 2017
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RI 4843 Process For Recovering Gold And Silver From Activated Carbon By Leaching And Electrolysis
By J. B. Zadra
The use of activated carbon for extracting gold and silver from pregnant cyanide solution and pulp has been investigated many times. The primary advantage of this use of activated carbon is that .the
Jan 1, 1952
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Accelerated degradation and modified slake durability testing of clay mineral-rich coal mine spoil
By B Miles, D J. Williams, J Ahn, T A. Vangsness
The flooding of open strip coal mines in the Bowen Basin and Hunter Valley Coalfields of Eastern Australia has the potential to soften the spoil and floor materials to produce “mud”. This mud can act
Jul 23, 2018
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Closed-Circuit Grinding with Vibrating Screens
By Terry A. Kirk
"This paper describes Derrick High Frequency Vibrating Screens and their process performance in grinding circuit applications. The benefits of screen sizing in closed circuit grinding are illustrated
Jan 1, 1984
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Elimination of Crystallinity in Fractured Surface of Medium Carbon Low Alloy Steel Plates Through Process Improvement
By Ram Avtar
High tensile thick plates (>80mm, weight ~3000 Kg) of medium carbon low alloy steel, when heat treated, manifested higher percentage of crystalline area (>20%) in fractured surface. Such problem was n
Jan 1, 2009
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RI 3201 Explosive Shattering of Minerals
By R. S. Dean, John Gross
"In a preliminary report made a year ago it was shown that certain minerals when subjected to heating with water under high pressure and temperature were shattered upon the sudden release of that pres
Feb 1, 1933
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The identification of mineralized granitoid plutons from ore-element distribution patterns in regional lake sediment geochemical data
By P. H. Davenport
"The ore-element patterns in regional lake sediment geochemical survey data from four areas of Newfoundland containing granite-related mineralization reveal characteristics which can be used to identi
Jan 1, 1982
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RI 3819 Reduction of Iron Ore in Clay & Steel Containers
By J. P. Walker
"INTRODUCTION Sponge iron has been made commercially since 1912 at a Swedish ceramic plant; and the product, known as Swedish disk-type nagger sponge iron, has an excellent reputation as a superior fu
Sep 1, 1945
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OFR-36-88 Fundamental Studies On The Relationship Between Quartz Levels In The Host Material And The Respirable Dust Generated During Mining - Volume I: Experiments, Results And Analyses
By R. V. Ramani
The overall objective of this study is to contribute to the reduction of the quartz dust hazard in underground coal mines through a better under-standing of the sources and generation of airborne quar
Jan 1, 1987
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IC 6688 Cut-And-Fill Stoping ? Introduction And Acknowledgments
By C. H. Johnson
This paper on the out-and-fill method of mining is one of a series on mining methods published by the United States Bureau of Mines. It has been compiled chiefly from recent publications of the bureau
Jan 1, 1933
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IC 7344 The Properties And Uses Of Helium (Including A Comprehensive Bibliography, 1933-45) ? Introduction
By Henry P. Wheeler
As recently as 1915, helium was available only in very small quantities at a cost equivalent to $2,500 per cubic foot. It was a laboratory curiocity, and its properties were of interest to a limited n
Jan 1, 1946
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IC 7289 Suggested Hoisting-Signal Code For Metal-Mine Shafts
By D. Harrington
A uniform hoisting-signal code for mines hoisting from more than one level, if adopted by all mining States, would be beneficial to employees and owners alike and should largely reduce the number of h
Jan 1, 1944
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OFR-79-83 Remote Monitoring Of A Coal Waste Impoundment In West Virginia
By Gordon E. Green
This report addresses remote monitoring of coal waste impoundments for stability. Existing automated geotechnical monitoring systems are described and reviewed along with details of instruments suitab
Jan 1, 1982
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Technical Operating Flexibility In The Analysis Of Mine Layouts And Schedules (719dec4a-da75-4293-bf65-16fc466b0ebb)
By C. Musingwini
An often overlooked factor in the analysis of mine layouts and schedules is technical operating flexibility (or tactical flexibility), mainly due to its nebulous nature. By glossing over technical ope
Jan 1, 2007
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Bulletin 129 The Fusibility of Coal Ash and The Determination of the Softening Temperature
By ALBERT E. HALL, Arno C. Fieldner, Alexander L. Field
As a safeguard against excessive clinker troubles, specifications for the purchase of coal can be drawn to include the "softening" or "fusing" temperature of the ash. The value of such information has
Jan 1, 1918
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The Michigan Copper District
By Alexander N. Winchell
"Location. The copper mines of Michigan are all in the northern part of that state on the Keweenaw Peninsula, which extends from the (Michigan) mainland for about seventy miles northeasterly toward th
Jan 1, 1920
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Comparative Real-Time Characterization Of Frother Bubble Thin Films
By M. Gouet-Kaplan, J. A. Finch, S. Gélinas
Methylisobutyl carbinol (MIBC) and methoxy polypropylene glycol (Dowfroth 250) bubble thin films were characterized by composition and thickness determinations, using FT-IR spectroscopy and UV-Visible
Jan 1, 2006