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Improved Dust Control For Bag Handlers - On-Site Tests Lead To Minor Modifications To A Bag-Palletizing System That Significantly Reduce Workers' Dust ExposureBy Jeanne A. Zimmer, Brad Smith, Steve Viles, Andrew B. Cecala
A recent report evaluating silica exposure levels in the metal/nonmetal mining industry noted that bag packaging and loading are some of the occupations at the greatest risk. In addition to dust probl
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High Temperature Interactions between Si3N4 and TicBy N. Can
Kinetics and mechanism of the chemical interactions between Si3N4 and TiC were investigated by isothermally reacting samples under nitrogen and argon atmospheres at temperatures between 1600°C and 170
Jan 1, 1999
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Papers - Effect of Small Percentages of Chromium on the Quality of Cast Iron (With Discussion)By Charles O. Burgess
The improvement in the quality of cast iron by means of alloy additions has been a metallurgical accomplishment of recent years. Work in this field has shown that chromium is one of the most effective
Jan 1, 1933
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RI 8114 Reduction of Zinc Sulfide With IronBy Philip E. Sanker
The Bureau of Mines conducted small-scale batch and semicontinuous tests on the reduction of zinc sulfide with iron according to the reaction ZnS + Fe ? FeS + Zn to determine reaction kinetics in the
Jan 1, 1976
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Simulation Of Product Specifications Of A Samarco’s Secondary Grinding Stage For Different Ball SizesBy Jackson Teixeira de Oliveira, Douglas Batista Mazzinghy, Vanderson Eney de Matos, Alexandre Camilo Leles de Figueiredo
This work studied the effect of different ball sizes in the secondary grinding stage of Samarco. The Moly-Cop Tools 3.01 spreadsheet was used for models calibration and simulations, considering grindi
Oct 3, 2019
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Extractive Metallurgy Division - Equilibrium Considerations in the Roasting of Metallic SulfidesBy Herbert H. Kellogg
The chemistry of sulfide roasting is analyzed to show those aspects of performance which Thecan be predicted from considerations of thermodynamic equilibrium. It is concluded that equilibrium calculat
Jan 1, 1957
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Operational Results of Norddeutsche Affinerie Copper SmelterBy Peter Willbrandt
The flash smelter at NA was commissioned in March 1972 with an initial throughput of 50 tons of dry copper concentrate per hour. As a result of various measures, for example, oxygen enriched process w
Jan 1, 1993
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RI 9294 Use of Sheathed Explosive Charges on LongwallsBy Richard J. Mainiero
The U.S. Bureau of Mines in cooperation with Jim Walter Resources, Inc. (JWR), Brookwood, AL, evaluated the use of sheathed explosive charges in breaking up large stones that can jam the feeder¬breake
Jan 1, 1990
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New XRF Analyzer For Elemental Analysis Of Sample Streams (579c7d37-7910-41c9-8e47-95bb7ebe80c4)By M. J. Laurila
Elemental analysis of slurry streams using X-ray fluorescence (XRF) has long been employed. However, detector technology has limited the application of XRF devices. Using detector technology employed
Jan 1, 1999
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RI 4021 Manganese Products Corp.'s Morgan Group, Dona Ana County, N. MexBy Paul L. Russell
This property has been examined several times in the last few years , and findings have been reported . In the fall of 1942 , the author supervised sampling both lode and placer deposits . The ore was
Feb 1, 1947
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Washington Paper - Preliminary Note on the Thermal Properties of SlagsBy Henry M. Howe
SECTIONS 1. INTRODUCTION.—In this investigation the meltingpoint and the specific heat of certain artificial silicates were determined by the method of mixtures, using a large platinum-ball pyrometer.
Jan 1, 1890
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Silicone Vapor Poisoning of Catalytic Methane SensorsBy L. J. E. Hofer, J. L. Snyder, J. N. Barn, J. E. Chilton, W. E. Thomas
Various silicone materials have been proposed for use in mining environments. The catalytic methane sensors now employed are poisoned by silicone vapors. Activated charcoal and carbon cloth adsorbents
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Aglomeração De Carvão A Frio Para Aumentar A Produtividade De Plantas De CokeBy Pedro Antunes Amaral
Currently there is a constant and essential concern of preserving nature. Over the years the concern with the environment is increasing, new environmental laws are emerging and being applied more rigo
Oct 30, 2017
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Papers - Mechanical Properties - Hardness Measurement as a Rapid Means for Determining Carbon Content of Carbon and Low-alloy Steels (Metals Technology, JanuaryBy Nicholas Kowall, K. L. Clark
Maximum furnace efficiency and close control of final steel composition demand that the steel melter be able to follow closely the variations in the carbon content of the bath. For many years, the
Jan 1, 1944
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Papers - Mechanical Properties - Hardness Measurement as a Rapid Means for Determining Carbon Content of Carbon and Low-alloy Steels (Metals Technology, JanuaryBy K. L. Clark, Nicholas Kowall
Maximum furnace efficiency and close control of final steel composition demand that the steel melter be able to follow closely the variations in the carbon content of the bath. For many years, the
Jan 1, 1944
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Plant Operation Of The Deister Flotaire Column Flotation CellBy Donald E. Zipperian
It has been recognized that froth flotation of mineral particles utilizing rising flow of micro size air bubbles, counter-current to quiescent falling flow of particles in a column type cell, provides
Jan 1, 1985
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Productivity Increases Through Pattern Expansion With Ultra-HighBy Miguel Humpire Huamani, Gustavo Huerta Valer, Jorge C. Cárdenas Miranda
As part of the continuous improvement and increase productivity to achieve the mining and extraction plan of a low-grade open pit copper operation, alternatives are required to expand the blast patter
Feb 6, 2023
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Design, Construction, and Operation of Periodic Reverse Current Process at TamanoBy Tatsuzo Kitamura
The tank house of Tamano refinery, that started its operation in January, 1972, was constructed incorporating the application of Periodic Reverse Current (P.R.C.) from the outset of design works. In 1
Jan 1, 1976
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Identification and Risk Assessment of Cross-Border Mergers and Acquisitions y China?s Coal EnterprisesBy Zhang Junzhi
This paper relates cross-border mergers and acquisitions (M&A) risk management theory to actual coal enterprises in China. The 3 phases of M&A are preparation, implementation and integration. By using
Aug 1, 2013
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Sustainable Minerals Education – We Care, But do You?By D Laurence
Mining cycles have come and gone and with them there have been dramatic swings in the levels of interest and student entry into minerals-related education programs, hence graduate supply to the indust
Mar 21, 2011