Free Essay

Aluminium Foil

In:

Submitted By cvanwagnen
Words 2387
Pages 10
The little things in life can sometimes be the biggest players in how the world is run. Pieces of the world we use everyday are full of small things that make a big difference. Aluminum foil is one of the small things in life that can be easily overlooked, and yet it plays a very large role in making life easy for all of us. Because of it’s history, how its made, and how its used, aluminum foil has changed the way we live. To understand the many uses of aluminum foil and how it has made life easier, the history of where aluminum foil came from, needs to be understood. Because aluminum was not made into the foil used today until the 19th century, it is best that we trace the many uses for aluminum in other forms. Aluminum was being used in ancient Egypt where they used alumina, an aluminum compound, for various medicinal uses. It was mostly used for mixing with other compounds to make the desired medication (aluminum foil). It was not until the early 1800s that someone tried to create aluminum for a practical use. In 1807 Sir Humphry Davy was the first person to try and create pure aluminum from minerals found in the earth. Davy was a British scientist and was the first person to identify and create pure substances that only existed in in other forms through electrolysis (Sir Humphry). He was unsuccessful in isolating aluminum but his ingenuity lit the way for many successors. Sir Humphry Davy inspired others to try and create a solid aluminum ingot. “Danish physicist and chemist, Hans Christian Ørsted, in 1825 finally produced aluminum. ‘It forms,’ Ørsted reported, ‘a lump of metal which in color and luster somewhat resembles tin.’” (Hans Christian). Hans Christian Ørsted became the first scientist to successfully isolate aluminum from other materials. This was a major breakthrough in the aluminum making process. It meant that pure aluminum could be formed from other compounds, and used in many applications. In 1825 Henri-Etienne Sainte-Claire Deville created a method for lumping aluminum together which is considered the “foundation for the modern aluminum industry.” (aluminum foil). “He worked out a process for obtaining pure aluminum from its compounds by treating them with sodium…; the Deville process made aluminum a commercial metal for the first time” (Henri-Etienne). Deville’s contributions to the world of aluminum, sparked the beginning of modern-day manufacturing, and his process of refinement is the basis for all aluminum production today. The first practical process for aluminum smelting was invented by Charles Martin Hall on February 23, 1883. Using the Deville process, Hall created a way to produce pure aluminum effectively and cheaply. His smelting process includes a large furnace called a pot, filled with molten cryolite that mixes with alumina to produce pure aluminum. This process has been unchanged since 1883 and is the backbone for how aluminum is created today (aluminum foil). Hall’s contributions to aluminum also include co-founding the largest modern producer of aluminum, the Alcoa company. In 1887, after Deville had introduced the idea of adding sodium to the aluminum compounds to break apart the aluminum, and isolate it, Karl Joseph Bayer perfected it. Bayer used a lot of heat and a lot of pressure to quickly decompose the compounds and isolate alumina, a powder form of aluminum. His process is still the most effective method for extracting pure alumina from deposits of aluminum compounds. The Bayer process is used all over the world to produce alumina and eventually create pure aluminum that can be molded into the dreams of the world. The history of aluminum is a complex road to the sophisticated techniques that are used today. Creating aluminum and eventually aluminum foil has been perfected over many year by many people and is now easily made into many different shapes and sizes. The next step to understanding where aluminum foil comes from is to understand the processes it takes to create this wonderful metal. Aluminum foil is made from nearly pure aluminum. Pure aluminum is extracted from an aluminum ore called Bauxite. “Bauxite contains iron and hydrated aluminum oxide, with the latter representing its largest constituent material.” (aluminum Foil). Bauxite is a very commonly found material on the Earth’s surface. The most abundant producer of Bauxite though, is Australia. “Australia has huge reserves of bauxite, and produces over 40% of the world’s ore” (aluminum and bauxite). Other contributors to the bauxite stockpiles of the world include Brazil, Guinea, and Jamaica. (aluminum and bauxite) To create pure aluminum from Bauxite, there are three processes that the ore must go through. The first of which, is the Bayer process. In this process, raw Bauxite is reduced from a rock form to a rough powder and mixed with sodium hydroxide. Once mixed, a lot of heat and pressure the mixture is added and the mixture becomes sodium aluminate. From this form the mixture goes through a stage called clarification. (About Aluminum) After clarification, the aluminum inside the sodium aluminate, is attracted to particles of hydrated aluminum that have been seeded into the mixture. This creates aluminum hydrate. Once the aluminum hydrate starts to clump together with the aluminum from the sodium aluminate, it is removed and rinsed. During the final stage of the Bayer process, the aluminum hydrate is heated and refined into a white powder called aluminum oxide or alumina. (aluminum foil) The next process in making pure aluminum is to refine the aluminum oxide into a useable metal ingot using the system developed by Charles Martin Hall. To create pure aluminum, the aluminum oxide is mixed with a form of molten aluminum called cryolite in a large holding area called the pot. A large current of electricity runs through the pot to melt the aluminum oxide. When the aluminum oxide melts and mixes with the cryolite, pure aluminum is formed. It is more dense then the cryolite so it sinks to the bottom of the pot where it can be removed and cast into ingots. (About Aluminium) To produce the aluminum foil that is used everyday, the ingot of pure aluminum is simply flattened to the desired thickness and width. This is done with a mill that presses the pure ingot with rollers with continually smaller gaps between them. This is done until the aluminum becomes a foil which is “usually between 0.00017 and 0.0059 inches thick” (aluminum foil). After the foil is formed, it is cut to specified lengths and widths, and packaged for sale. These packages are the basis for how life can be made easier by one small material. There are many ways in which aluminum foil can be used to make life easier and more functional. In the early days of aluminum it was a very expensive material. It cost over sixteen dollars to produce one pound of pure aluminum in 1884 (Binczewski). Because of it’s significant rarity, aluminum was chosen to be the apex of the Washington monument in Washington D.C.. The monument was built in 1884 and at the time, aluminum was a very new metal. It was decided that aluminum should grace the top of the monument because it was the only material fit to acknowledge the greatness of George Washington. Little did everyone know that in a few short years a man would create a way to make aluminum one of the cheapest metals in use today. That man’s name was Charles Martin Hall. After Hall perfected the process for cheaply smelting aluminum in large quantities, the manufacturers of the day slowly started to notice the unique characteristics of aluminum foil. The flexibility, strength, and insolating properties of aluminum foil were unique to this type of metal foil, and many manufacturers began to use aluminum foils for a plethora of different applications which would change the way the world ran and the way life was lived . (starts with dirt) One of the first applications for aluminum foil was for aluminum foil identification tags on the legs of racing pigeons. These tags would be marked with different names or numbers to identify what bird belonged to which person. The aluminum foil that these tags are made from is so light weight that it did not interfere with the birds flight, giving the racing pigeons more speed. Although this was a very simple use for aluminum foil, it was just a foreshadow of how aluminum could be applied to many different situations in everyday life. (aluminum foil history) Soon after the pigeons, aluminum foil took the role of wrapping consumer goods such as chocolate and tea. The foil wraps on these items gave them lasting freshness and helped to sell the product because of the foil’s attractive, shiny exterior. This practical use of aluminum foil shows how foil can be used to help lengthen product life and create a product that a consumer wants to buy. (aluminum foil history) Aluminum foil, like many other tributes to human ingenuity, got it’s big debut to the public through the military. During WWII, aluminum foil was given to troops in a few different ways. Throughout the war, aluminum foil was used as “packaging to prevent damage to contents by moisture, vermin, and heat, electrical capacitors, insulation, and anti-radar chaff, which were dropped from planes on bombing missions, as a radar shield.”(aluminum foil history). These uses for aluminum foil were not only practical in the 1940’s, they are also used today. Chaff is a radar countermeasure that is still in use today. The idea is to confuse the enemy’s radar by dropping small aluminum foil strips from your aircraft so that the radar picks up the specs on the screen. By doing this, the enemy can not tell where your plane is in the cloud of readings on their radar screen, this makes you invisible to radar. Soon after the war, Aluminum foil could be found in almost every household in America and the world. Because of the cheap price tag and the flexibility in it’s use, aluminum foil was a quick hit. Mothers could use the foil to wrap sandwiches for their children’s lunch, and their children could bring back the durable wrapping to be washed and used again. Mothers could also use aluminum foil for practical house hold remedies, such as a lid to a bowl, underneath a shirt on an ironing board, or wrapping the shelves of an oven for easy clean-up. (aluminum foil history) A lot of problems can have a simple solution when using aluminum foil. Most people use scissors on a daily basis for clipping coupons and other household uses, but most people have no idea how to sharpen their scissors effectively. To sharpen a pair of scissors, take a few layers of aluminum foil and try to cut through the layers with your scissors. This will sharpen the edges of the scissors because the pliability of the aluminum allows the edges of the scissors to sharpen from friction with the layers of aluminum foil. For many people that grew up before the advent of cable television, the association of aluminum foil and television sets bring back many memories. It was very common for families to use aluminum foil to help create a stronger signal reception on the antenna of their television sets. The idea was to lengthen the antenna and create more surface are for the antenna to receive a signal from. It was this that earned the antenna the nickname, “rabbit ear”, because the foil made the television look like it had ears. This trick worked so well, that it became a common occurrence to see televisions with aluminum foil attached to them. Another common use for aluminum foil, is as a catch for spills in the oven. To catch spills with aluminum foil, place the foil around the racks inside the oven. When something overflows or is cooked directly on the rack it will not directly touch the rack. This will prevent from having to clean the oven and the rack after cooking something that could normally make a mess. Aluminum foil is used as temporary cookware everyday. Aluminum foil pans and other cookware are easily found in every supermarket and can be extremely cost effective when compared with the price of large cookware. The aluminum cookware is very durable and in some cases can be used over and over again. Most people use aluminum cookware during the holiday season as an alternative to expensive cookware like a turkey sized roasting pan. Aluminum is also used as turkey bags for perfectly cooked birds at thanksgiving. Aluminum is also used for dessert and can normally be found holding a pie while it is being cooked or served. Aluminum foil is used very effectively as a heat reflector, and can be found in a few different forms. Aluminum foil backed insulated boards are often found in homes in the north. The aluminum foil on the board reflects the radiant heat from the hot summer days, and the insulated board helps to keep the home warm in the bitterly cold winters. Aluminum foil tape is commonly found in use with heat ducts in houses. The foil in the tape allows heat to stay in the ducts and the tape bonds the two material together. Aluminum foil is also often used by crazy people to protect their brain. These people believe that the government or aliens are trying to pry into their minds. The crazy people sometimes make aluminum foil hats to protect their minds from being probed. I’m not sure why aluminum foil is used for this, but I suspect that it is the reflective properties of aluminum foil that lead the uneducated to believe that this material will protect them for external investigation from unwanted beings or agencies. A lot of uses for aluminum make a big difference in peoples lives. This small part of everyday life can have a huge impact on how we eat, work, and enjoy our selves through out the day. Aluminum foil is very much so a key ingredient in life that con not e taken out. Aluminum foil has the power to change the world, and with it’s versatility, sharp looks, and unlimited uses, aluminum foil has changed our lives.

Similar Documents

Free Essay

Annie Mac

...saying “Arrived in Leeds O2 to hear 2,700 people sing ‘Latch’ at the top of their voices. Go Disclosure!..” so as you can imagine, it was an intense start to the night! Arguably one of the most anticipated songs of the night was Feel The Love – Rudimental. The combination of the strobe lights, the saxophonist and the amazing voice of John Newman was enough to send shivers down your spine and led to 2700 people screaming the lyrics at the top of their lungs – I’m still singing it in my head 3 days later! Shortly after Rudimental had made my hairs stand on end, the moment we’d been waiting for had finally arrived – Annie Mac. She stood behind the somewhat makeshift DJ booth (it resembled a table covered in tin foil – in fact, I think it was a table covered in tin foil) and mixed all that was good from 2012 with old school classics and anything with a beat the crowd could bounce to. Annie’s music and sheer talent speaks for itself, but my only criticism is her lack of flare. Perhaps she is deep in concentration and lost in the music, but the...

Words: 622 - Pages: 3

Premium Essay

Project on Working Capital

...bus PROJECT FINAL REPORT ON “Working capital management at Nalco” BY RAKESH KUMAR BARAL (PGDM) Accman institute of management Summer Internship Project (Batch of 2008) PREFACE To start any business, First of all we need finance and the success of that business entirely depends on the proper management of day-to-day finance and the management of this short-term capital or finance of the business is called Working capital Management. Working Capital is the money used to pay for the everyday trading activities carried out by the business - stationery needs, staff salaries and wages, rent, energy bills, payments for supplies and so on. I have tried to put my best effort to complete this task on the basis of skill that I have achieved during the last one year study in the institute. I have tried to put my maximum effort to get the accurate statistical data. However I would appreciate if any mistakes are brought to my by the reader. ACKNOWLEDGEMENT A work is never a work of an individual. I owe a sense of gratitude to the intelligence and co-operation of those people who had been so easy to let me understand what I needed from time to time for completion of this exclusive project. I am greatly indebted to my guides Prof. DENESH SINGH ,faculty guide for Finance (summer internship),...

Words: 12022 - Pages: 49

Free Essay

Vershire Company

...The world’s primary aluminium industry produces over 23 millions ton of aluminium metal per year. The most important markets for aluminium products are the transport, building and packaging sectors, however aluminium also finds application in electrical and mechanical engineering, office equipment, domestic appliances, lighting, chemistry and pharmaceuticals. The United States' aluminum industry is the world's largest, annually producing about $39.1 billion in products and exports. U.S. companies are the largest single producer of primary aluminum. The U.S. industry operates over 300 plants in 35 states , produces more than 23 billion pounds of metal annually and employs over 145,000. Aluminum is one of the few products and industries left in America that truly impacts every community in the country, either through physical plants and facilities, recycling, heavy industry, or consumption of consumer goods. The aluminum industry's performance is noteworthy, particularly in light of the proliferation of alternative materials and global competition. Transportation represents the largest market for aluminum in the United States. In 2000, transportation accounted for 32.5 percent of all US shipments. In 2000, containers and packaging ranked second to transportation with 20.4 percent of the market, thanks to shipments of 4,992 millions of pounds in products such as beverage cans, food containers, and household and institutional foil. Nearly seven billion aluminum foil containers are produced...

Words: 1140 - Pages: 5

Free Essay

Aluminium

...Aluminium The world aluminium market in 2007 was expected to end with a surplus of 42,000 tonnes against the estimated shortage of 372,000 tonnes in the preceding year. Global demand for primary aluminium was expected to grow 5.8% in 2007 and 6.0% 2008, while the global supply was expected to rise 7.0% in 2007 and 6.9% in 2008, a result of rapid expansion of the industry in China. The worldwide capacity to produce alumina was placed at around 80 mn tonnes in 2007 and was slated to touch 100 mn tonnes in 2010. Alumina accounts for about 22% of the cost in the production of aluminium. India's share in world aluminium market is estimated at around 3%. India ranks fifth in bauxite production after Australia (62 mn tonnes), Guinea (17.50 mn tonnes), Brazil (16.20 mn tonnes) and China (10.75 mn tonnes). With a total output of 9.25 mn tonnes, the country contributes about 6% of the world's total production of 159 mn tonnes, India holds the fifth position in reserves base and is ahead of China with 2300 mn tonnes. India ranked seventh in alumina production with a total output of 3 mn tonnes, a share of nearly 5% of the global production of 61 mn tonnes. The per capita consumption of aluminium in India continues to remain abysmally low at under 1 kg as against nearly 25 to 30 kg in the US and Europe, 15 kg in Japan, 10 kg in Taiwan and 3 kg in China. Aluminium has a wide range of applications, from aircraft building to packaging, a major consumer being the electrical industry...

Words: 2262 - Pages: 10

Free Essay

Vershire Company Inc Case

... The world’s primary aluminium industry produces over millions ton of aluminium metal per year. The most important markets for aluminium products are the transport, building and packaging sectors, however aluminium also finds application in electrical and mechanical engineering, office equipment, domestic appliances, lighting, chemistry and pharmaceuticals. The United States aluminum industry is the worlds largest, annually producing about $.1 billion in products and exports. U.S. companies are the largest single producer of primary aluminum. The U.S. industry operates over 00 plants in 5 states , produces more than billion pounds of metal annually and employs over 145,000. Aluminum is one of the few products and industries left in America that truly impacts every community in the country, either through physical plants and facilities, recycling, heavy industry, or consumption of consumer goods. The aluminum industrys performance is noteworthy, particularly in light of the proliferation of alternative materials and global competition. Transportation represents the largest market for aluminum in the United States. In 000, transportation accounted for .5 percent of all US shipments. In 000, containers and packaging ranked second to transportation with 0.4 percent of the market, thanks to shipments of 4, millions of pounds in products such as beverage cans, food containers, and household and institutional foil. Nearly seven billion aluminum foil containers are produced...

Words: 3211 - Pages: 13

Free Essay

Merger and Aquisition

...HINDALCO - NOVELIS ACQUISITION: CREATING AN ALUMINIUM GLOBAL GIANT AUTHORS INFORMATION: NAME : 1. AMAN SRIVASTAVA, Assistant Professor, Jaipuria Institute of Management, Noida, asrivastava@jimnoida.ac.in 2. RAKESH GUPTA, Associate Professor, IILM, Greater Noida, guptark123@rediffmail.com ABSTRACT HINDALCO - NOVELIS ACQUISITION: CREATING AN ALUMINIUM GLOBAL GIANT Last decade witnessed growing appetite for takeovers by Indian corporate across the globe as a part of their inorganic growth strategy. In this chain Indian aluminium giant Hindalco acquired Atlanta based company Novelis Inc, a world leader in aluminium rolling and flat-rolled aluminium products. Hindalco Industries Ltd., acquired Novelis Inc. to gain sheet mills that supply can makers and car companies. Strategically, the acquisition of Novelis takes Hindalco onto the global stage as the leader in downstream aluminium rolled products. The transaction makes Hindalco the world's largest aluminium rolling company and one of the biggest producers of primary aluminium in Asia, as well as being India's leading copper producer. The case study attempts to analyze the financial and strategic implications of this acquisition for the shareholders of HINDALCO. The case explains the acquisition deal in detail and highlights the benefits of the deal for both the companies. Followings are the main issues to be discussed for critical review of this case:  What is the strategic rational for this acquisition...

Words: 7268 - Pages: 30

Free Essay

Disturbia

...the cost of the installation down the wire used is aluminum. Sometimes the copper wire is tinned with solder, and sometimes there is some silver in it. ==== For over 100 years utility companies have been using aluminum wire in their power grids. It has advantages over copper wire in that it is lighter, more flexible, and less expensive. Aluminium wire in power grid applications was very successful and is still used today. Wiring in homes and buildings is another matter. In the '60s when the price of copper skyrocketed, aluminum wire was manufactured in sizes small enough to be used in homes. Aluminium wire requires a larger wire gauge than copper to carry the same current. For example, a standard 15 A branch circuit wired with No. 14 gauge copper requires No. 12 gauge aluminum. When first used in branch circuit wiring, aluminum wire was not installed any differently than copper, and many of these connections failed due to bad connection techniques and dissimilar metals. These connection failures generated heat under electrical load and resulted in overheated connections. Most metals oxidize when exposed to air. Aluminium oxide is an electrical insulator. The aluminum in a slightly loose conenction oxidizes and over time will fail. In the late 1960s, the CU/AL specification was...

Words: 5418 - Pages: 22

Free Essay

Scm Project

...INDIAN SCHOOL OF BUSINESS MANAGEMENT & ADMINISTRATION PROJECT REPORT On A FRAMEWORK OF “SUPPLY CHAIN MANAGEMENT” Submitted for the Partial fulfillment towards the award of the degree in MASTER OF BUSINESS ADMINISTRATION Submitted By Under the Guidance of SHARATH HS Roll Number: Session – 2013-14 PREFACE This report has been written in response to a comprehensive study, conducted on the “SUPPLY CHAIN MANAGEMENT” of “HINDALCO INDUSTRIES LIMITED”. The report mentions and evaluates the various aspects, pertaining to the distribution channel of the company. ACKNOWLEDGEMENT At the onset I must bow down in reverence to the almighty that blessed us with the understanding & prevalence that is needed in this kind of project report. With great pleasure I express my heartiest thanks to Dr. Diwakar Shetty without whose unrelated support and guidance, this project would just not have been possible. I am very thankful for his invaluable guidance, support, and affable & friendly nature. He/She guided me at each and every stage of project. I am equally indebted to my friends who always inspired and motivated me to do something better through...

Words: 10328 - Pages: 42

Free Essay

Aluminum

...Aluminum Aluminum is a silvery white member of boron group of chemical elements. It has Al as a symbol, and its atomic number is 13. Aluminum is not soluble in water under normal circumstances. Aluminum considered as the third most abundant element, and the most abundant metal. It makes up about 8% by weight of the Earth's solid surface. Aluminum metal is a very reactive metal .It is found combined in 270 different minerals. Aluminum History In 1761, Guyton de Morveau suggested calling the base alum alumina. In 1808, Humphry Davy identifies the existence of a metal base of alum. The metal was first produced in 1825 in an impure form by physicist and chemist Hans Christian Ørsted. He react anhydrous aluminum chloride with potassium amalgam, yielding a lump of metal looking similar to tin. Friedrich Wöhler was aware of these experiments and cited them, but after redoing the experiments of Ørsted he concluded that the metal was pure potassium. He conducted a similar experiment in 1827 by mixing anhydrous aluminum chloride with potassium and yielded aluminum. Aluminum Characteristics There are many characteristics of aluminum, and here i will talk about two types of aluminum characteristics:- 1- Physical characteristics: Aluminum is a soft, durable, lightweight, and malleable metal with appearance ranging from silvery to dull gray, depending on the surface roughness. A fresh film of aluminum film serves as a good of visible light and an excellent reflector of...

Words: 1080 - Pages: 5

Free Essay

Employee Welfare

...alumina from bauxite. Aluminum has only been produced commercially for 146 years and is still a very young metal. Humankind has been using copper, led and tin for thousands of years and yet today more Aluminum is produced that all other non-ferrous metals combined. Growth rate CMIE (Centre for Monitoring Indian Economy) revises GDP growth forecast for FY 2009-10 from 5.8% to 6% Impact of weak monsoon withering away with higher than expected growth in industrial Production. The Aluminum industry in India comprises two main segments • Primary producers manufacture Primary Aluminum Metal in the form of ingots & slabs. • Secondary producers manufacture semi-fabricated items like rolled products, extrusions, rods & foils from the primary metals. Entry barriers to the industry are high mainly because of the large capital costs of an integrated plant. In addition, the industry is very power and technology intensive. In fact the need for a capital power facility increases the capital costs. Production costs and product mix are the basis of competition in the...

Words: 12997 - Pages: 52

Free Essay

Alumunium Pressure Ent Project

...PROJECT PROFILE PRODUCT: ALLUMINIUM PRESSURE DIE CASTING QUALITY STANDARD: AS PER MARKET DEMAND. PRODUCTION CAPACITY (PER ANNUM): 1. 91 MT. aluminium alloy pressure die cast components @ Rs. 2,05,000 per MT. 1,86,55,000 2. Aluminium alloy scrap 0.30 tons @ 80,000 per MT. 24,000 1,86,79,000 MONTH AND YEAR OF PREPARATION: JULY - 2008 PREPARED BY: MSME DEVELOPMENT INSTITUTE GOVT OF INDIA, MINISTRY OF MSME VIKAS SADAN, COLLEGE SQUARE CUTTACK-753003, ORISSA TEL. 2648049, 2648077 FAX: 0671-2332307 PREPARED FOR: M/S.CREATIVE FUNCTIONAL ART 257,PARIDA SAHI , AT/PO-CHOUDWAR ,DIST-CUTTACK Introduction Though tremendous technological advancements in the mental casting industry have taken place in recent years ,the foundry industry faces increasing demands to achieve higher productivity at minimum cost, even while producing high quality cast components of intricate shapes. By proper selection of a casting technique with careful foundry and metallurgical controls, castings of high quality are being commercially manufactured. Amongst a large number of foundry techniques one is low and high pressure die-casting .It has been developed and industrially employed to produce casting of near-net shape components. The near net shape cast parts are famous for their fine details, good surface conditions, complex shapes and economy. Under the present scenario...

Words: 2224 - Pages: 9

Premium Essay

He Aluminum Industry in 1994

...The Aluminum Industry in 19941  and  Aluminum Smelting in South Africa: Alusaf’s Hillside Project2  1) Is primary aluminum production an attractive industry? Why or why not?  Within the framework of the Structure-Conduct-Performance (SCP) model3, the primary aluminum production industry (“the industry”) in 1994 can be described as perfectly competitive. The industry is characterized by a large number of competing firms – the largest of which has only 4.1% of total industry capacity; homogeneous, commodity-type products and low-cost entry and exit into and out of the industry (assuming capital is available where returns are greater than cost of entry). Within the industry, market prices are established via a commodities exchange (the London Metal Exchange, or LME) and individual firms have little ability to set market prices. In a perfectly competitive industry social welfare is maximized – due largely to the lack of product differentiation and the number of competitors, while expected firm performance is normal.  In the early 1990’s the collapse of the Soviet military caused Russian and other Soviet State smelters to flood the market with capacity that had previously supplied military needs. During 1993, LME inventories of primary aluminum increased by nearly a million tons, to over 2.5 million tons, while producer inventories increased by over 300,000 tons. This surge in supply & inventory levels drove world aluminum prices to all-time lows - $1,110/ton at the end...

Words: 1568 - Pages: 7

Free Essay

Materials Science

...Drew Kelly IET 307 HW5 Dr. Nair 1) 2) 3) 4) I speculate that the type of corrosion was called Hydrogen Embrittlement. Various metal alloys, specifically some steels, experience a reduction in ductility and tensile strength when atomic hydrogen penetrates into the material. Basically it is a type of failure, the brittle fracture occurs as the cracks grow and rapidly propagate. HE is very similar to stress corrosion in that a normally ductile metal is exposed to a stress and a corrosive atmosphere. For HE to occur some source of Hydrogen has to be present and also there must be a possibility of formation of its atomic species. High strength steels are very susceptible to HE and increasing the materials strength tends to enhance the chance the material can become HE. This form seems to fit the applied situation. 5) Yes it is possible to have reinforced steel bars that can corrode while still inside the concrete. Another perfect example of this is, as mentioned in the above answer, is Hydrogen Embrittlement. Again He is when a hydrogen atom gets inside the material and causes it to corrode, a good way to prevent the chances of corrosion are to add in inhibitors. Inhibitors are substances that when added at low concentrations that can prevent corrosion. Another way you can prevent corrosion is called Cathodic Protection. This is when you apply an external source, electrons to the metal, making it a cathode. Then the action of corroding is put in...

Words: 253 - Pages: 2

Free Essay

Aluminium Hbs Case

...luminium case Some points to consider but more research needed ! Q1- Discuss and describe why the primary aluminum industry is competitive. How has the industry  changed since 1994? It might be helpful to look at the statistics available at the International  Aluminum Institute and Worldal.com  -competitive because it is traded as a metal commodity in the London Metal Exhange. –i.e there is a bid and a ask price …trade made at the most competitive price. -Huge no of suppliers -More competitive as power costs fall in countries like China -change since 1994-After reaching all-time highs in excess of $2,500 per ton in 1988 and 1989, aluminum prices fall dramatically in the early 1990s as the former Soviet Union begins exporting far larger quantities of metal. By the beginning of 1994, the price has hit all-time lows.Al demand goes hand in hand with GDP growth-need for housing,construction,transportation. (Give eg of countries) -In 2000-2004 stable prices, but 2004-2008 prices doubles ( inspite of global recession) post 2008 prices falling. -untill the early 2000’s U.S major prod of Al. -After which Canada,Russia and presently China ( emerging markets ,cheap power) http://www.boj.org.jm/uploads/pdf/papers_pamphlets/papers_pamphlets_The_World_Aluminium_Market__An_Analysis_of_ ...

Words: 444 - Pages: 2

Free Essay

Recycle

...Aluminum Recycling How many times have our parents asked us to take the trash out? Probably more than most of us care to remember. Instead of asking if we took out the trash, parents are now beginning to ask if we sorted the trash. The purpose of my Senior Project was to promote awareness to the benefits of recycling. My community service consisted of promoting, researching and participating in the recycling of aluminum cans. There are many financial and environmental benefits to recycling aluminum and aluminum can be easily collected and reused over and over again. People need to be aware of what is happening in the environment and also be educated on what they can do to help. We need to recycle aluminum because it saves natural resources, time, money, and energy. In one year, the United States produces 160 million tons of garbage, this is enough metal to build two million automobiles, enough wood to construct a million homes, enough paper to publish all the daily newspapers in the country, enough aluminum to rebuild the entire American fleet 71 times, and would fill 11 million garbage trucks. Landfills are quickly increasing in number and size. One of the advantages of recycling is that it helps keep extra waste out of our landfills and incinerators. The sum of existing landfills is increasing because of the lack of care to help the environment. People are lazy and they cannot understand the effects of not recycling. Landfills take up space and...

Words: 2566 - Pages: 11