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- Copper -- Metallurgy<br />Mattes (2)
- Zinc -- Metallurgy (2)
- <p>Aluminum -- Metallurgy<br />Aluminum alloys<br />Aluminum industry and trade<br />Aluminum ores<br />Aluminum</p> (1)
- <p>Blast furnaces -- Design and construction<br />Lead -- Metallurgy</p> (1)
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- <p>Gold -- Metallurgy</p> (1)
- <p>Lead -- Metallurgy<br />Silver -- Metallurgy</p> (1)
- <p>Lead based paint<br />White lead</p> (1)
- <p>Spelter<br />Sphalerite</p> (1)
- Aluminum -- Testing<br />Aluminum<br />Hydroxides (1)
- Amalgamation<br />Silver ores -- Metallurgy (1)
- Arsenic<br />Fly ash -- Purification<br />Smelting -- Waste disposal (1)
- Assaying (1)
- Calcium phosphate<br />Neutralization (Chemistry) (1)
- Copper -- Metallurgy<br />Leaching -- Experiments<br />Tailings (Metallurgy) (1)
- Copper -- metallurgy<br />Metals -- Inclusions<br />Arsenic (1)
- Copper ores -- Arizona<br />Leaching -- Experiments (1)
- Cyanide process<br />Gold ores<br />Ore-dressing<br />Silver ores (1)
- Electric conductivity -- Measurement<br />Heat -- Conduction -- Measurement (1)
- Electric shock -- Physiological effect<br />Electrical injuries (1)
- Flotation -- Experiments (1)
- Flotation -- Experiments<br />Silver ores -- Treatment -- Mexico (1)
- Iron -- Analysis<br />Iron -- Metallography<br />Steel -- Analysis<br />Steel -- Metallography (1)
- Iron<br />Metals -- Effect of temperature on<br />Steel (1)
- Lead ores -- Missouri -- St. Francois County<br />Lead ores -- Testing (1)
- Lead<br />Sulfates<br />Volumetric analysis (1)
- Magmas<br />Rocks, Igneous -- Analysis (1)
- Manganese -- Metallurgy<br />Manganese-copper alloys<br />X-rays -- Diffraction (1)
- Nickel alloys -- Analysis<br />Nickel steel -- Microstructure (1)
Articles 1 - 30 of 36
Full-Text Articles in Metallurgy
X-Ray Data Concerning Some Manganese-Copper Alloys, George Lester Mitsch
X-Ray Data Concerning Some Manganese-Copper Alloys, George Lester Mitsch
Bachelors Theses
"Until recently the only commercial method of producing metallic manganese in large ammounts sic was a pyrometallurgical process. Producing a metal of about 97% purity, it was not very satisfactory. With the advent of a process for producing a metal of 99.9 plus % purity electrolytically, introduced by the United States Bureau of Mines, for the first time was there a sufficient quantity of pure manganese available for alloy use. The manganese-copper system was chosen for study because of the inconsistencies in the reports of previous investigators, and because of the properties alloys of these components possess, such as magnetism, …
A Metallographic Study Of Copper Mattes, Edward James Torrence
A Metallographic Study Of Copper Mattes, Edward James Torrence
Bachelors Theses
"The metallographic knowledge of copper mattes or mattes in general for that matter, although extensive, is, to put it mildly, rather diversified. One authority, for instance, believes that mattes are sulphide dissolving compounds there being no eutectiferous series involved. Another believes that the matte constituents enter into a eutectiferous series, compounds being present. Still a third contends that there are no compounds formed but that a simple eutectiferous range exists between certain limits outside of which the end members of the series form solid solutions with each other. In so far as there exists seeming absolute proof for all of …
The Microstructure Of Some Commercial Nickel Steels, Robert Newton Stubbs
The Microstructure Of Some Commercial Nickel Steels, Robert Newton Stubbs
Bachelors Theses
"In this thesis it was the author's intention to take up the microstructure of such nickel steel as is generally employed for structural work"--page 3.
Oils And Flotation, Clarence Eugene Peterson, Charles Yancey Clayton
Oils And Flotation, Clarence Eugene Peterson, Charles Yancey Clayton
Bachelors Theses
"We know that the sulphides, or minerals with a metallic lustre, can be floated either with or without oil and that the carbonates, silicates, etc., cannot be floated so readily. Why do certain oils have the power of selecting certain minerals? Why do certain oils produce froth? Why do certain oils give a watery froth? Why do some give an ephemeral froth and others a tough one? Of the thousands of oils known, only a few classes have found successful application in this new process...This leads us to the question, what property or combination of properties make oils valuable as …
The Effect Of Temperature Upon The Crystal Size And Physical Properties Of Iron And Steel, Earl Joesting Mcnely
The Effect Of Temperature Upon The Crystal Size And Physical Properties Of Iron And Steel, Earl Joesting Mcnely
Bachelors Theses
"This investigation was deemed of sufficient merit to require the work of two terms. It naturally is divided into two parts, i.e., the effect that temperature has upon the crystal size; and the effect that temperature has upon the physical properties of iron and steel"--page 3.
Leaching Experiments On An Arizona Copper Ore, Gunnard Edmund Johnson
Leaching Experiments On An Arizona Copper Ore, Gunnard Edmund Johnson
Bachelors Theses
"The object of this thesis was to obtain a general knowledge of the problems to be solved in leaching a typical carbonate copper ore or oxidized capping of the New Cornelia Copper Co.'s ore. The experimental work previously performed far exceeds any that might be attempted in the short time allotted to this work, and the few results obtained indicate that the ore is particularly favorable for leaching"--Scope of Thesis, page 1.
Treatment Of A Complex Ore, Earl Burdette Weiberg, Hugo Edward Koch
Treatment Of A Complex Ore, Earl Burdette Weiberg, Hugo Edward Koch
Bachelors Theses
"Many complex ores are found in the West, which contain zinc in large quantities together with lead, copper, gold, and silver in sufficient amounts to yield a good profit could they be separated from the zinc economically, If such an ore were sent to the smelter to be treated in a blast furnace for the recovery of lead, copper, gold, and silver the smelter would penalize the shipper for all zinc over ten percent. On the other hand if the ore were sent to a zinc smelter for direct treatment there would be a penalty for excess lead present, and …
Flotation Applied To A Mexican Silver Ore, Albert Leo Trent
Flotation Applied To A Mexican Silver Ore, Albert Leo Trent
Bachelors Theses
"The object of this thesis is to determine the advisability of treating this Mexican Silver ore by flotation. To do this it was necessary to determine the degree of crushing, the kind and amount of oil, the amount of acid, the time of agitation, and the dilution of pulp, which would give the best results. From the following tests a suitable conclusion of the best conditions of this ore was determined"--Introduction, page 1.
Determination Of Critical Point Of Concentrating Tables On Flat River Ore, J. C. Finagin Jr., W. C. Hogoboom
Determination Of Critical Point Of Concentrating Tables On Flat River Ore, J. C. Finagin Jr., W. C. Hogoboom
Bachelors Theses
"In concentrating any ore on tables there is, theoretically, a critical point in sizing, beyond which it can not be expected to recover the valuable minerals; that is, valuable mineral finer than a certain size will go with the gangue and be lost. for instance, in the diagram of the Wilfley Table shown, the concentrates grade from coarse to fine as indicated, but instead of grading on down into very fine sizes farther up the table these finer sizes are found mixed with the middlings, tailings and slimes as indicated by the arrows. The problem is to determine the critical …
An Investigation Of The Leaching Of Copper Tailings By Means Of Potassium Cyanide, Precipitation Of The Dissolved Copper By Means Of Aluminum, With Consequent Regeneration Of The Cyanide Consumed, Thaddeus Reamy Goldsborough
An Investigation Of The Leaching Of Copper Tailings By Means Of Potassium Cyanide, Precipitation Of The Dissolved Copper By Means Of Aluminum, With Consequent Regeneration Of The Cyanide Consumed, Thaddeus Reamy Goldsborough
Bachelors Theses
"One of the principal disadvantages attending the use of most of the usual solvents for Copper, such as Sulphuric Acid, Ferrous Chloride, etc., in the treatment of tailings products, is that the solvent is not regenerated upon precipitation by iron, and in fact is destroyed by the precipitant. This of course involves a dead loss of a definite portion of acid or other reagent, proportional to the amount of Copper dissolved. A solvent which would be regenerated upon precipitation is eminently desirable. At the same time, a carbonate gangue, or one of such a nature which will react with the …
The Effect Of The Presence Of Certain Base Metals On The Ability Of Amalgams To Catch Gold And Silver, Ray Gould Knickerbocker
The Effect Of The Presence Of Certain Base Metals On The Ability Of Amalgams To Catch Gold And Silver, Ray Gould Knickerbocker
Bachelors Theses
"As a general proposition, the conditions that favor successful amalgamation, and the factors that work against the success of the operation are reasonably well known. We know that if mercury contains certain impurities it will not pick up gold and silver efficiently. We know that if the gold and silver are not in proper condition the mercury will not work as it should. We also know what some of these impurities are, and have some idea as to what condition the gold and silver should be in, but the exact data on these conditions and their effects are lacking. The …
The Effect Of Insoluble Sulphates On The Volumetric Determination Of Lead, Mervin Joe Kelly, Ralph Knappenberger
The Effect Of Insoluble Sulphates On The Volumetric Determination Of Lead, Mervin Joe Kelly, Ralph Knappenberger
Bachelors Theses
"It has been pointed out that Alexander's Molybdate Method for lead gives inconsistently varying results when calcium is present in the ore...It was to clear up this apparent contradiction and to find the true effect of the presence of calcium on the titration in the molybdate method, that this investigation was started"--Introduction, page 1.
The Nature Of The Reactions Occurring In The Distillation Of Zinc From Its Ores And The Effect On The Speed Of These Reactions Due To Certain Variables, Robert Glenn Sickly, Charles Yancey Clayton
The Nature Of The Reactions Occurring In The Distillation Of Zinc From Its Ores And The Effect On The Speed Of These Reactions Due To Certain Variables, Robert Glenn Sickly, Charles Yancey Clayton
Bachelors Theses
"The reactions that occur in the metallurgy of zinc are in general well known as to the end results obtained. The zinc smelter desires a maximum recovery in a minimum time. There are certain factors that govern the fulfillment of this desire. The most important of these are TEMPERATURE, TIME, KIND OF REDUCTION MATERIAL, and THE NATURE OF THE ORE. There is much data available as to the temperatures at which these reactions go on and also there is obtainable some information as to the speed with which these reactions progress, particularly as to the length of time required for …
A Series Of Tests On The Condensation Of Zinc Vapor To Metallic Zinc, Frank W. Cody, John W. Greene
A Series Of Tests On The Condensation Of Zinc Vapor To Metallic Zinc, Frank W. Cody, John W. Greene
Bachelors Theses
"The purpose of this Thesis is to try to show the effect which certain variables, which are always present in practice, have upon the condensation of Zinc Vapors to Metallic Zinc. That these variables can and do play an important part in the Zinc Smelting Industry can be shown from the fact that all of the zinc obtained at the present time is won from ores by reducing the oxide of zinc to metallic zinc by means of carbon. This operation necessarily takes place at a temperature above the boiling point of zinc. This means that the zinc immediately on …
Crystallization Of Magmas, Norman L. Ohnsorg
Crystallization Of Magmas, Norman L. Ohnsorg
Bachelors Theses
"The object of this paper is to arrive at a better explanation of the segregation of magmatic solutions on cooling. In which magmas will be discussed from a chemical and metallurgical lien of reasoning, in showing why such minerals as apatite, magnetite, etc., having a comparatively low melting point, crystallize cut before feldspar and quartz, which have a comparatively high fusion point"--page 1.
A Comparison Of The Silver Losses Due To Cupellation Using Different Kinds Of Cupels, Martin Harmon Thornberry
A Comparison Of The Silver Losses Due To Cupellation Using Different Kinds Of Cupels, Martin Harmon Thornberry
Bachelors Theses
"In this Thesis my object has been to ascertain the silver losses in cupellation with different kinds of cupel material, thereby determining the effeciency sic of the materials in the four kinds of cupels used. When I began the work I though the losses would be about equal in all cupels, but was surprised to find such a great difference. I refer the reader to the curves to see what really happened"--page i.
Scheme For The Treatment Of Copper Smelter Flue Dust, John Perry Walker
Scheme For The Treatment Of Copper Smelter Flue Dust, John Perry Walker
Bachelors Theses
"In recent years, methods for improving the prevailing practice in treatment of flue dust have demanded the attention of those engaged in the copper and lead industries. Great advancement has been made in the more complete settling of the dust in large chambers and flues, and in some instances, more particularly in the case of lead smelters, in its extraction from the flue discharge of the furnaces by filtration through bags. Schemes for re-treating this recovered dust are, however, in a somewhat undeveloped state"--page 1.
Ratio Of The Thermal And Electrical Conductivities For Gas Carbon, Oscar Alan Randolph
Ratio Of The Thermal And Electrical Conductivities For Gas Carbon, Oscar Alan Randolph
Bachelors Theses
"The method of F. Kohlrausch for the determination of the ratio of the heat conductivity upside down gamma , to the electrical conductivity k of a substance is of practical value as well as of theoretical interest. Of practical value because there may be obtained from it - with much great ease than by direct methods - the heat conductivity which has immediate applications, not only to the design and construction of furnaces, but to various other matters of such import; of theoretical interest to the physicist, because of the Wiedmann-Franz and its consequent relation to the electron theory; to …
The Determination Of The Electrical Resistance Of The Human Body Under Conditions To Be Met Within Underground Mining, Duncan S. Smith, Paul E. Coaske
The Determination Of The Electrical Resistance Of The Human Body Under Conditions To Be Met Within Underground Mining, Duncan S. Smith, Paul E. Coaske
Bachelors Theses
"The use of electric wires in mines for power purposes is dangerous to human life. Deaths occur every year from electric shocks, and in most cases these accidents could have been prevented if some precaution had been taken by the victims, or if some care had been taken to protect them from coming in contact with live wires. Most workingmen accustomed to working around electric wires become careless and a lack of knowledge of the danger involved gives rise to the many accidents that occur each year...The object of this investigation is to determine just what resistance the human body …
The Preparation Of Zinc Blende For Reduction, Frederick Edward Riede, Earl Frederick Boland
The Preparation Of Zinc Blende For Reduction, Frederick Edward Riede, Earl Frederick Boland
Bachelors Theses
"The object of this thesis was, in the beginning, to investigate the losses which occur throughout the process of extracting zinc from its ore. Owing to the length of time required in roasting and to the short period of time to do the work, we were compelled to limit ourselves to the roasting of zinc blende or the preparation of zinc blende for reduction"--page 3.
A Study Of Some Assay Problems, Walter Dobbins, Charles Weaver Traughber
A Study Of Some Assay Problems, Walter Dobbins, Charles Weaver Traughber
Bachelors Theses
"The object of this thesis is to work out some assay problems. Each problem is taken up independently, and may be considered as having no connection whatever with the others"--Introduction, page ii.
The Cyanidation Of High Grade Gold And Silver Concentrate, Reginald Henry Brinton Butler, John Warren Beard
The Cyanidation Of High Grade Gold And Silver Concentrate, Reginald Henry Brinton Butler, John Warren Beard
Bachelors Theses
"The cyanidation of high grade gold and silver concentrate is a subject that has lately been attracting the attention of metallurgists in different parts of the world, and offers an interesting field for investigation and research. The inducements are especially strong in districts at log distances from the smelter, and where high freight rates and excessive treatment charges obtain"--page 1.
Chemical And Physical Analysis Of Steel And Iron, John T. E. Ericson
Chemical And Physical Analysis Of Steel And Iron, John T. E. Ericson
Bachelors Theses
No abstract provided.
Design Of A Lead Blast Furnace, Walter Irving Phillips, Andrew Jackson Seltzer
Design Of A Lead Blast Furnace, Walter Irving Phillips, Andrew Jackson Seltzer
Bachelors Theses
"In order to get the approximate size of the Furnace we made the following assumptions, being guided as far as possible by the practice of the Globe Smelting Works at Denver, Colorado whenever that could be ascertained"--page 1.
Analytical Determination Of Copper Products, Charles Dosh Smith
Analytical Determination Of Copper Products, Charles Dosh Smith
Bachelors Theses
"It is a well known fact that the presence of impurities in copper products has been a source of annoyance to the Chemist. The object of this thesis was to make myself familiar with the actions of different impurities in copper products, and the methods for the determination of Arsenic in the same"--page 1.
Neutralization Of Free Acid (H₃P O₄) In Commercial Mono-Calcium Phosphate (Ca H₄ (Po₄), George William Harris, Harry Adam Grine
Neutralization Of Free Acid (H₃P O₄) In Commercial Mono-Calcium Phosphate (Ca H₄ (Po₄), George William Harris, Harry Adam Grine
Bachelors Theses
"The object of this thesis has been a systematic research based on the characteristic properties and reactions of mono-calcium phosphate, Ca H₄ (PO₄)₂, tending towards the development of a process for neutralizing the free phosphoric acid, H₃PO₄ formed during its manufacture"--page 1.
Influence Of Time And Temperature In The Roasting Of Sulphides, Roger Hanson Hatchett
Influence Of Time And Temperature In The Roasting Of Sulphides, Roger Hanson Hatchett
Bachelors Theses
"The original object of this work was to determine the relation between the quantities of oxide and sulphate formed in roasting a sulphide under known conditions of temperature, time and supply of air. But difficulties arose in constructing apparatus, which in the short time allotted could not be overcome. These are mentioned in description of apparatus, and were of such a nature that the relations between products and conditions are for the most part qualitative"--page 1.
Action Of Caustic Hydroxides Upon Aluminum, Herbert Fordyce. Rogers
Action Of Caustic Hydroxides Upon Aluminum, Herbert Fordyce. Rogers
Bachelors Theses
No abstract provided.
Assay Of Copper Matte For Gold And Silver, Walter E. Soest
Assay Of Copper Matte For Gold And Silver, Walter E. Soest
Bachelors Theses
"Ores containing copper, and especially copper matte, have always been very annoying in assaying for the precious metals. In assaying copper matte, and ores containing much copper, by the usual method of scorification, the losses of silver an gold are considerable, owing to the fact that in order to obtain lead buttons, which are soft and free from copper, repeated scorifications are necessary, and moreover it is impossible to obtain lead buttons which are entirely free from copper"--page 1.
White Lead, Evans Walker Buskett