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Extractive Metallurgy Division - Thermodynamics of Iron-Silicate Slags: Slags Saturated With Solid Silica
By R. Schuhmann, E. J. Michal
Experimental measurements are reported for the oxygen pressures of iron-silicate slags in equilibrium with solid silica. CO2-CO mixtures were bubbled through the slags in silica crucibles to find equi
Jan 1, 1953
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Institute of Metals Division - Estimation of the Entropy of NaCl-Type Compounds
By Larry Kaufman
A useful method for estimating the entropy of NaCl type compounds has been developed by combining the Debye theory of specific heat with the Lindemann formula. This method pemnits calculation of the e
Jan 1, 1962
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Institute of Metals Division - Design for Molybdenum Wire Wound Furnace (TN)
By T. P. Papazoglou, N. A. D. Parlee, W. C. Phelps
PRACTICAL designs for good "home made" molybdenum furnaces are hard to find in the literature. The one described briefly below left something to be desired but was good enough to operate as a rathe
Jan 1, 1965
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Part X – October 1968 - Papers - Double Accommodation Kinking and Growth of {1121} Twins in Zirconium
By R. E. Reed-Hill, W. H. Hartt, W. A. Slippy
An unusual form of double kinking has been observed at the ends of {1121} twins in deformed zirconium. These kinks lie partly outside of the twin and partly inside. While they are undoubtedly closely
Jan 1, 1969
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Papers - Well Logging - Some Practical Aspects of Radioactivity Well Logging (T. P. 1923)
By John L. P. Campbell, Warren J. Jackson
Automatic recording of the radioactivity of the earth's formations provides a log of relative intensities that, if properly interpreted, can be applied to oil-field engineering. Production, engin
Jan 1, 1946
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Technical Notes
Experimentation which measures differences in pressure across the interfaces of immiscible fluids in the interstitial spaces of porous media may be termed "capillary pressure experimentation". In the
Jan 1, 1949
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Extractive Metallurgy Division - A Thermodynamic Analysis of the Cr-C-O, Mo-C-O, and W-C-O Systems
By Wayne L. Worrell
Thermodynamic data for the stable carbides and oxides of chromium, molybdenum, and tungsten have been critically eualuuted and are used to determine the stable condensed phases at 1 atm total pressure
Jan 1, 1965
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Reservoir Engineering-Laboratory Research - Investigations of Miscible Displacements of Aqueous and Oleic Phases From Porous Media
By J. J. Taber, W. K. Meyer
Experiments on consolidated sandstones have shown that a variety of conditions are responsible for the wide range of behavior observed when oil and water are displaced simultaneously by a solvent whic
Jan 1, 1965
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Minor Metals - Modern Plants for Reduction of Quicksilver
By Gordon I. Gould
The treatment of quicksilver ores to extract the metal, for centuries one of the fundamentally simpler metallurgical operations, has undergone few if any material changes during the past iew decades o
Jan 1, 1944
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Part I – January 1969 - Papers - Thermodynamics of Gamma Prime Iron Nitride (“Fe4N”) at 500°C
By H. A. Wriedt
At 500°C (932°F) the range of y' iron nitride is from 5. 77 + 0.03 wt pct N (in coexistence with a iron) to 5.88 * 0.03 wt pct N (in coexistence with E iron nitride). Stoichiometric "Fe,N" (5.9
Jan 1, 1970
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Institute of Metals Division - The Effect of Surface Condition on the Microstrain of Beryllium
By C. H. Li, J. A. Sarteli, W. Bonfield
The stress to cause a permanent micros train of 2 x 10-6 in. per in. (defined as the microscopic yield stress) in beryllium is found to be very sensitive to surface condition. The initiation of plasti
Jan 1, 1963
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Part II - Papers - The Solubility of Sulfur in Silicon-Iron
By H. C. Fiedler
The solubility of sulfur in Si-Fe was determined by the metallographic examination of heat-treated and quenched samples. In the absence of manganese, the solubility in 3.1 pct Si-Fe was found to be ab
Jan 1, 1968
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Minerals Beneficiation - Mechanisms of Soluble Salt Flotation. Part II
By D. C. Seidel, M. C. Fuerstenau, R. J. Roman
The role of surface charge in soluble salt flotation, which was developed in Part I, is extended to relate the theory to the specific phenomena of KCI-NaC1 separations. Temperature-collector solubilit
Jan 1, 1969
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Institute of Metals Division - Comparison of Fatigue Mechanisms in Bcc Iron and Fcc Metals
By W. A. Wood, W. H. Reimann, K. R. Sargant
A study is made of the microstructural changes produced in armco and pure iron subjected to alternating torsion at amplitudes above and below the knee of the S/N curve. The aim was to identify the ba
Jan 1, 1964
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Metal Mining - Illinois Operations of the Eagle Picher Mining and Smelting Co.
By C. O. Dale, W. J. Rundle
THE upper Mississippi Valley zinc-lead area was the first major lead-producing section in the United States. The lead ore, found near the surface in crevices, was relatively pure galena that could be
Jan 1, 1953
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Part XII - Papers - Solid-Solution Strengthening in Iron-Base Alloys
By R. C. Ku, R. G. Davies
The stress-strain behavior of Fe-C and Fe-Ni solid-solution alloys has been investigated at 25°C. It is found that the rate of solid-solution strengthening is dependent upon the strain at which the yi
Jan 1, 1967
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Minerals Beneficiation - Some Surface Properties and Flotation Characteristics of Magnetite
By S. R. B. Cooke, Y. S. Kim, I. Iwasaki
lron oxides or the gangue minerals of iron ores can be made to float, depending upon the choice of collector. The selectivity of the separation is controlled by the accompanying chemical and operating
Jan 1, 1962
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Minerals Beneficiation - Chelation of Quartz Activating Ions in Oleic Acid Flotation
By C. B. Daellenbach, T. D. Tiemann
The prevention of quartz flotation by chelation of activating ions with the tetrasodium salt of EDTA in oleic acid flotation was investigated using a small vacuum flotation cell. It was found that flo
Jan 1, 1964
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Leveraged Leasing For The Minerals Industry
By Rodney G. Ravenscroft
Leasing is not a new phenomenon. Experts have identified its origins as early as biblical times. It is a method of finance that has grown rapidly and is now used in most countries, including those of
Jan 1, 1985
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Institute of Metals Division - The Recrystallization Behavior of Ni-Ta Alloys and the Role of Fine Precipitates
By Klaus Detert, Joseph Ziebs
The progress of primary recrystallization has been studied in alloys of nickel with 0.01, 0.1, and 1.0 at. pct Ta. It can be shown that in one particular alloy containing 0.1 Ta and 0.02 02 a large gr
Jan 1, 1965