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Copper ores
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Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060073
EISBN: 978-1-62708-261-7
... specifically copper alloys) gave birth to this first practical age of metallurgy. Copper, like gold and silver, existed in a native or natural state. Ores that were more than 99.9% pure were found in many parts of the world. Some civilizations, such as the moundbuilding Indians of the Ohio plains, found...
Abstract
The discovery and use of materials have shaped civilization since ancient times. This chapter traces the history of the use of metals from hammered copper estimated to be 11,000 years old to the development of electrolytically refined aluminum in 1884. The discussion covers the advent of the Bronze Age, extraction of metals from their respective ores, and the discovery of modern metals such as chromium, vanadium, platinum, and titanium.
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2024
DOI: 10.31399/asm.tb.hisppa.t56110005
EISBN: 978-1-62708-483-3
... that dates to approximately 8000 B.C. Evidence of smelting copper ore to obtain copper metal, which requires these high temperatures, dates back to the 5th millennium B.C. ( Ref 2.3 ). Besides copper, gold is one of the earliest worked metals. Nubia (translated to Goldland) had one of many sources...
Abstract
This chapter presents a brief review of the history of brazing and soldering. It illustrates complicated soldering techniques and masterful goldsmith work, as demonstrated by the famous gold mask of the Egyptian Pharaoh Tutankhamun. The chapter includes the image of a painting from Egypt circa 1475 B.C. that shows a goldsmith soldering with a blowpipe. Numerous similar images have been found in the tombs of ancient Egypt that offer insight into the practices of gold workers from the period, including the use of processes such as smelting, forging, and joining with both brazing and soldering.
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230007
EISBN: 978-1-62708-298-3
... of domestic beryllium-copper. In 1936, the Beryllium Corporation moved its plant from Marysville, MI, to Reading, PA. The commercial-scale beryllium ore producers as of 1940 [ NSRB 1953 ] were: The Beryllium Corporation of Pennsylvania, Reading, PA (later, the Beryllium Corporation), processed ore...
Abstract
This chapter describes some of events and developments that helped drive the commercialization of beryllium and its acceptance as an engineering material. It traces the growth of the domestic beryllium industry from its origins in the 1920s to the present time, and provides a status update on the primary beryllium producers throughout the world.
Book Chapter
Book: Principles of Brazing
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.pb.t5123000x
EISBN: 978-1-62708-351-5
... [Pliny, Natural History , xxxiii 29 (see Rackham, 1952 ); Wolters 1983]. A powdered copper-bearing ore, such as malachite, is heated with a flux in a reducing environment, generally provided by the organic gum, which is used to hold the granules in place. This operation yielded finely divided copper...
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ems.t53730149
EISBN: 978-1-62708-283-9
... of energy that is used to produce copper from ore. In general, the value of recycled copper is approximately 90% that of virgin copper. The primary sources are electrical wiring, plumbing pipes, and fixtures. Control of the scrap is important. To produce new wire, only high-conductivity (highly pure) scrap...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230019
EISBN: 978-1-62708-298-3
... metric tons from 1985 to 1989. Chinese exports also included beryllium hydroxide and beryllium-copper master alloy, with Japan and the United States as the most logical customers. Many of the import shipments of ore from China contained 30 to 70 wt% of its beryllium content in an acid-soluble form...
Abstract
Beryllium is the 44th most abundant element on Earth, with an estimated concentration of six parts per million in the Earth’s crust. It is found in various forms in more than 100 minerals, two of which, beryl and bertrandite, account for most of the beryllium produced throughout the world. This chapter describes where and how beryllium is obtained and provides facts, figures, and insights on global supply and demand.
Book Chapter
Book: Principles of Soldering
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2004
DOI: 10.31399/asm.tb.ps.t6244000x
EISBN: 978-1-62708-352-2
... than design since pure lead does not wet copper at all readily. The Romans are known to have produced lead separately from silver, taking advantage of the fact that this metal can be easily extracted from its sul de ore, galena, simply by roasting the mineral in air [Tylecote 1976]. The earliest...
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220009
EISBN: 978-1-62708-259-4
... it. Typical cases are the scrap of coated steel products (tin foil and galvanized products, which will bring tin, zinc, and eventually aluminum into the charge). Furthermore, copper electrical conductors in cars and appliances are an important source of contamination of the scrap with this metal. Several...
Abstract
This chapter describes the basic steps in the steelmaking process. It explains how iron is reduced from ore in the liquid state through the classic blast furnace process and in the solid state by direct reduction. It discusses the conversion of iron to steel and the technological advancements that led from open hearth steelmaking to basic oxygen processes and ultimately the electric arc furnace (EAF). It describes the versatility, efficiency, and scalability of the EAF process and its impact on recycling and sustainability. It explains how EAF refining and deoxidation practices have changed over time, and describes secondary refining processes such as degassing, homogenization, rinsing, and remelting.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 May 2018
DOI: 10.31399/asm.tb.hma.t59250107
EISBN: 978-1-62708-287-7
... Electric Smelting and Aluminum Company in Cleveland. The Cowles had a process for making an alloy of copper containing aluminum, which was called aluminum bronze. Hall joined the Cowles’ company at their plant in Lockport, New York, with a salary of $75 a month for three months. If his experiments were...
Abstract
This chapter discusses the development of aluminum, its industry growth, and its modern uses in manufacturing. It begins with the biography of Charles Martin Hall, who invented the process for reducing aluminum from its ore. The evolution of aluminum production from the Pittsburgh Reduction Company to a pilot plant on Smallman Street in Pittsburgh, to a production plant in New Kensington, and to Niagara Falls, New York, is then described. This is followed by a discussion on early aluminum applications and the usage of lower-cost raw materials. The chapter provides information on aluminum production process integrated by Aluminum Company of America (Alcoa) and the numerous technical problems and solutions related to Alcoa's research from World War I to World War II. The aerospace applications for aluminum alloys are also presented. The chapter concludes with a section on aluminum alloys developed by Alcoa.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.tb.atia.t59340019
EISBN: 978-1-62708-427-7
... to the end product. Alcan and Alcoa were among the best examples, as outlined in Chapter 1, “Introduction—Aluminum as an Industrial Material” in this book. However, by 2017, mining companies with interests in iron ore, copper, zinc, and other mining controlled the vast majority of aluminum smelting...
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.t59320003
EISBN: 978-1-62708-332-4
... the charge. Fig. 2.4 Schematic of a cupola installation Air for combustion is supplied through tuyeres (copper nozzles with a water-cooling jacket) from an annular wind box in the combustion zone. A “tap hole” in the refractory brick with a spout allows the molten metal to flow out...
Abstract
This chapter provides a brief overview of iron and steel manufacturing and the major equipment involved in the process as well as identifying where casting fits into the overall process. In addition, it provides an overview of cast iron manufacturing, including the processes involved in converting pig iron into cast iron and steel.
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230001
EISBN: 978-1-62708-298-3
... Abstract Beryllium, despite its relatively simple atomic structure, possesses a wide range of useful engineering properties. It has the highest strength-to-weight ratio and modulus of elasticity among structural metals and is an important alloy addition in copper, nickel, and aluminum alloys...
Abstract
Beryllium, despite its relatively simple atomic structure, possesses a wide range of useful engineering properties. It has the highest strength-to-weight ratio and modulus of elasticity among structural metals and is an important alloy addition in copper, nickel, and aluminum alloys. It also has excellent thermal properties, low atomic mass, a small x-ray absorption cross section, and a large neutron scattering cross section. This brief introductory chapter provides an overview of the unique qualities of beryllium along with typical applications and uses.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220001
EISBN: 978-1-62708-259-4
... discussions on steel chemical compositions. Figure 1.4 lists the main functions of alloying elements as normally accepted. Besides these, elements coming from scrap (such as copper, arsenic, antimony, zinc, and lead) and those coming from the atmosphere (such as nitrogen, hydrogen, and oxygen, the last...
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240469
EISBN: 978-1-62708-251-8
... the first metal used by man. It could be found in small quantities in the metallic state, and, being soft, it was readily shaped into ornaments and weapons during the Bronze Age. In addition, many copper ores can easily be reduced to the metal, and since these ores often contain other minerals, it is very...
Abstract
Copper is often used in the unalloyed form because pure copper is more conductive than copper alloys. Alloying elements are added to optimize strength, ductility, and thermal stability, with little negative effect on other properties such as conductivity, fabricability, and corrosion resistance. This chapter covers the classification, composition, properties, and applications of copper alloys, including brasses, bronzes, copper-nickel, beryllium-copper, and casting alloys. It also examines wrought copper alloys and pure coppers. The chapter begins with an overview of the copper production process and concludes with a discussion on corrosion resistance.
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230071
EISBN: 978-1-62708-298-3
... Abstract This chapter describes some of the chemical processes that have been developed to extract beryllium from different types of ore. It covers the Kjellgren-Sawyer sulfate method, the Degussa method, Copaux-Kawecki fluoride extraction, solvent extraction, and leaching and settling. It also...
Abstract
This chapter describes some of the chemical processes that have been developed to extract beryllium from different types of ore. It covers the Kjellgren-Sawyer sulfate method, the Degussa method, Copaux-Kawecki fluoride extraction, solvent extraction, and leaching and settling. It also provides information on electrolytic extraction and the use of electrorefining.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 May 2018
DOI: 10.31399/asm.tb.hma.t59250001
EISBN: 978-1-62708-287-7
... in England in the development of ironmaking. industrial revolution ironmaking metal discovery The history of metals in America started in antiquity when man discovered particles of gold, silver, and copper in riverbeds where they had washed down from the mountains. These particles of soft metals...
Abstract
This chapter provides an account of the pre-Columbian history of metal discovery in America and then reviews the development of metallurgy in the Middle Ages from early wrought iron practices to the use of coke in iron casting. It discusses the influence of the family of Abraham Darby in England in the development of ironmaking.
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.t68350001
EISBN: 978-1-62708-315-7
..., improved corrosion resistance (e.g., nickel-chromium multilayer coatings, and cadmium and zinc sacrificial coatings), wear resistance (e.g., hard chromium coatings), electrical properties (e.g., copper and silver), and aesthetic appearance (e.g., bright nickel or decorative chromium plating) Electroless...
Abstract
This chapter begins with a brief review of the different types of surface treatments and coatings used in industry and their effect on properties and performance. It then discusses the importance of corrosion and wear treatments and the consequences of failing to properly implement them in critical industries such as mining, energy production, transportation, and mineral and chemical processing. The chapter also describes basic approaches to dealing with corrosion and wear in steel.
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230493
EISBN: 978-1-62708-298-3
... Abstract This chapter describes a process for recovering beryllium from industrial waste associated with beryllium-copper production. It presents several detailed flowsheets along with typical operating parameters such as flow rates, chemical concentrations, particle sizes, and compositional...
Abstract
This chapter describes a process for recovering beryllium from industrial waste associated with beryllium-copper production. It presents several detailed flowsheets along with typical operating parameters such as flow rates, chemical concentrations, particle sizes, and compositional ranges.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060369
EISBN: 978-1-62708-261-7
... bronzes Copper and copper-nickel alloys Silver solder Nickel (passive) Alloy 600 (passive) Alloy 400 Titanium Type 304 and 316 stainless steels (passive) Silver, gold, platinum Most cathodic (noble) and least susceptible to corrosion Source: Adapted from Ref 15.2...
Abstract
Corrosion can be defined as a chemical or electrochemical reaction between a material and its environment that causes the material and its properties to degrade. In most cases, it refers to the electrochemical oxidation of metals accompanied by the production of oxides or salts of the base material. This chapter discusses the process of corrosion and how to prevent or mitigate its effects. It describes several forms of corrosion, including uniform, intergranular, pitting, crevice, and stray-current corrosion, and the effects of stress-corrosion cracking, corrosion fatigue, and selective leaching. It discusses the use of corrosion inhibitors, cathodic and anodic protection, pH control, and Pourbaix diagrams.
Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740001
EISBN: 978-1-62708-308-9
..., and limestone are added as layers through an opening at the top of the furnace. Hot air at approximately 900 °C (1650 °F) is blasted into the bottom of the furnace, an area called the bosh, through water-cooled copper nozzles called tuyeres. The oxygen in the air reacts with the coke to form carbon monoxide gas...
Abstract
This chapter discusses the processes, procedures, and equipment used in the production of iron, steel, aluminum, and titanium alloys. It describes the design and operation of melting and refining furnaces, including blast furnaces, basic oxygen and electric arc furnaces, vacuum induction melting furnaces, and electroslag and vacuum arc remelting furnaces. It also covers casting, rolling, and annealing procedures and describes the basic steps in aluminum and titanium production.
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