Aluminium

487 Words1 Page
bulb-icon

Recommended: Aluminum research

Aluminium

The history of Aluminium use

Aluminium is now one of the most widely used metals, but one of the hardest to refine due to it's reactivity with other elements. Even as late as the turn of the century, Aluminium was considered very valuable and in turn expensive, even more expensive than gold. In some cultures, when a function was held (for example, a party) by wealthy people, only the most honored guests would be given
Aluminium cutlery, the others had to make do with gold or silver cutlery.

A Description of the Aluminium ore, including a list of it's contents

Pure Aluminium oxide is known as alumina (Al2O3). This is found as corundum, a crystalline. Aluminium can also occur as cryolite (Na3AlF6). Traces of other metal oxides in Aluminium oxide tint it to make it form stones (often precious) for example: chronium gives a red colour to rubies, and cobalt makes the blue in sapphires. How Aluminium deposits are formed

Aluminium (like many other metals) is not found in it's pure form, but associated with other elements in rocks and minerals. An aluminosilicate such as felspar (KAlSi3O8) is the main constituent of many rocks such as granite, which is quartz and mica cemented together with felspar. These rocks are gradually weathered and broken down by the action of carbon-dioxide from the air dissolved in rainwater forming ‘kaolin'. This is further broken down to form other substances, ultimately resulting in the formation of Aluminium deposits.

Where and how Aluminium is mined?

Aluminium is never found in it's pure state until it has been refined. Aluminium is made when refining alumina, which is in turn found from the ore ‘bauxite'.
Bauxite is often mined in the opencast method.

Aluminium deposits are found in many countries, but the countries with significant deposits include: Guinea, Jamaica, Surinam, Australia and Russia.

How is Aluminium refined?

One method is the ‘electrolytic process'. This is performed when a low voltage current is passes through a bath containing alumina in the molten form. The alumina is broken down into Aluminium metal which collects at the bottom of the bath at one electrical pole, the cathode, and the oxygen which reacts at the other pole, the anode, to give carbon-dioxide and some carbon-monoxide.

The uses and properties of Aluminium

Aluminium is now the second most widely used metal, after iron.

Show More
Related

  • Hydrated Potassium Aluminum Sulfate

    1016 Words  | 3 Pages

    Aluminum is the third most abundant element and most abundant metal in the Earth’s crust. Aluminum is never found in the free element state in nature. It

    Read More

  • Articles of Confederation Remedied by The Constitution

    1723 Words  | 4 Pages

    The year of 1776 was a time of revolution, independence, and patriotism. American colonists had severed their umbilical cord to the Mother Country and declared themselves “Free and Independent States”.1 The chains of monarchy had been thrown off and a new government was formed. Shying away from a totalitarian government, the Second Continental Congress drafted a document called the Articles of Confederation which established a loose union of the states. It was an attempt at self-government that ended in failure. The Articles of Confederation had many defects which included a weak central government that lacked the power to tax, regulate trade, required equal representation and a unanimous vote to amend the Articles, and had only a legislative branch. As a result the United States lacked respect from foreign countries. These flaws were so severe that a new government had to be drafted and as a result the Constitution was born. This document remedied the weak points of the federal government and created one that was strong and fair, yet still governed by the people.

    Read More

  • Stereotypes Of African American Women

    1426 Words  | 3 Pages

    Stereotypes strongly influence how people interact, communicate, and establish relationships with others around them (Fries-Britt and Griffin 2007). In mainstream America, black women are often stereotypically portrayed as sex workers, welfare queens, blue-collar service workers, video vixens, and entertainers (Collins 2004). Within these stereotypical depictions, black women are viewed as loud, angry, ghetto, hypersexual, and sometimes violent (Chavous et al. 2004; Childs 2005; Collins 2004; Nguyen & Anthony 2014; Wilkins 2012). In contrast, positive stereotypes of black women showcase them as strong, independent, resilient, loyal to their families and romantic partners, and responsible for sustaining the African American family. These images promote constructive illustrations of black women even though popularized images negatively portray black women (Chavous et al. 2004; Settles 2006; Wilkins 2012). These stereotypes of black women describe positive characteristics that many black women tend to ascribe to and attain. I argue that even though these stereotypes may yield positive behaviors from black women, they are still considered stereotypes because the majority will utilize these stereotypes to negatively categorize black women. In the words of Pat Hill Collins (2004: 263), “African American women’s race and gender classification disadvantages them”. Thus, these

    Read More

  • Barium

    503 Words  | 2 Pages

    Barium is a soft, heavy, silver-colored metal element. This element does not have very many uses outside of the laboratory, but it combines easily with other chemicals to form compounds used for important industrial uses. For example, Barium carbonate is used in the manufacture of ceramics and special glass, and also to purify certain chemical solutions. It is also an ingredient in clay slurries, also known as water muds, used in drilling oil wells. Barium titanate is used in sonar detectors and other electrical equipment. At low doses, barium acts as a muscle stimulant and at higher doses affects the nervous system eventually leading to paralysis. Acute and subchronic oral doses of barium cause vomiting and diarrhea, followed by decreased heart rate and elevated blood pressure. Higher doses result in cardiac irregularities, weakness, tremors, anxiety, and dyspnea. A drop in serum potassium may account for some of the symptoms. Death can occur from cardiac and respiratory failure. Acute doses around 0.8 grams can be fatal to humans. Barium nitrate makes signal flares burn with a green flame. Barium ferrite is used to make magnets. Barium sulfate is an extremely insoluble barium compound that is not poisonous. Doctors use it in X-ray examinations of a patient's digestive system. The barium sulfate absorbs X rays to show an outline of the intestines on the developed film. A barium enema is performed to examine the walls of the colon. During the procedure, a well lubricated enema tube is inserted gently into the rectum. The barium is then allowed to flow into the colon. The flow of the barium is monitored by the health care provider on an X-ray fluoroscope screen. The test is used to detect colon cancer. The barium enema may also be used to diagnose and evaluate the extent of inflammatory bowel diseases. Barium sulfate and zinc sulfide form lithopone, a white coloring matter for paint. Barium is never found in a pure state because it combines so easily with other elements. Pure barium is obtained by passing an electric current through a fused barium compound, such as barium chloride. A piece of barium metal quickly reacts with oxygen and water vapor in the air to form barium oxide. It must be stored under kerosene to keep it pure. Barium is found most often as barium sulfate in the mineral barite. The chemical symbol for barium is Ba.

    Read More

  • Stereotyping Is Not Inevitable?

    1026 Words  | 3 Pages

    This allowed people to write down all stereotypes they know of African Americans. The results showed that both low and high prejudice groups wrote down similar stereotypes and therefore there was no significant differences between the groups and any category. “High- and low-prejudice persons are indeed equally knowledgeable of the cultural stereotype (Devine, 1989).” Although this is the case for both high- and low-prejudice persons, this does not mean that consciousness of a stereotype equals the influence and inevitability of prejudice. “The inevitability of prejudice approach, however, overlooks an important distinction between knowledge of a cultural stereotype and acceptance or endorsement of the stereotype” (Ashmore & Del Boca, 1981; Billig, 1985). Knowing about versus actually believing in stereotype are two very different things: “Beliefs can differ from one’s knowledge about an object or group or one’s affective reaction toward the object or group (Pratkanis, in press).” Therefore, while stereotypes are automatically activated, beliefs require conscious

    Read More

  • Stereotyping and Profiling Based Upon Religion

    1281 Words  | 3 Pages

    Fred Edmund Jandt (2003), the word “stereotype” was first used to show the judgments made about individuals on the origin of their racial background. Today the expression is more commonly used to pass on to events made on the basis of a groups association. Psychologists have attempted to give explanations of stereotyping as errors that our brains make in the judgment of other people that are related to those mistakes our brains make in the view of illustration illusions. When information is blurred, the brain frequently reaches the incorrect conclusion. (p.77)

    Read More

  • Gallium

    549 Words  | 2 Pages

    In chemistry, out of all the elements on the periodic table, there are a few that stand out because of certain characteristics, Gallium is one of these elements. On the periodic table, Gallium has the symbol Ga and atomic number 31. Gallium is a metal that has uses in such things as, medical, industrial, and everyday life.

    Read More

  • the title of a paper

    888 Words  | 2 Pages

    The video hosted by Bill Moyer that we watched in class on March 4th involved violence in the mass media and the effects that it may have on children in modern day society. Video games sometimes display graphic violence as well as violent verbal messages that often convey a message of appeal to children. Movies often combine humor, violence, and/or sex in order to be more appealing to the audience. Usually two or more of these factors are used. Whether it is through these sources or as something as simple as the evening news, violence is everywhere in the media today and displays messages of approval that American society may not realize.

    Read More

  • African American Stereotypes Essay

    760 Words  | 2 Pages

    African-Americans are the most stereotyped people in the world. These stereotypes are based on cognitive structures that may contain the beliefs, knowledge and expectation of the perceiver about the African-America. The stereotypes and prejudices are constructed out of a kernel of trust and then it is distorted beyond reality. The stereotypes against African-American were built through generalization of a truth that contained negative characteristics of the black people. Thus, stereotypes led to prejudices that entailed preconceived opinion that is not based on experience or reason.

    Read More

  • Children and Violence: An American Media Controversy

    1027 Words  | 3 Pages

    “Some Things You Should Know About Media Violence and Media Literacy.” American Academy of Pediatrics. <http://www.aap.org/advocacy/childhealthmonth/media.htm>. 13 Dec 2003.

    Read More

  • The Importance Of Federalism

    2297 Words  | 5 Pages

    Originally, after winning the Revolutionary War, the United States instituted the Articles of Confederation, which delegated most of the power to the states, only giving the federal government minor powers. However, without the ability to tax, among other weaknesses, the government was unable to do its job and the country quickly fell into a state of political and economic instability known as the ‘critical period’. Having experienced these problems, “[t]he framers understood that a strong and stable government was necessary…” That being said, many of the ‘founding generation’ were weary of giving the federal government too much power for two reasons: First, they found it “incompatible with the Declaration of Independence” . Additionally, Americans had just fought to break free of an oppressively strong national government – Why would they want to implement something similar? The original Constitution diffuses this worry by dividing power between the federal and state governments. This original division is where we get the original federal

    Read More

  • Potassium

    633 Words  | 2 Pages

    Potassium is a vital element in the human body. Potassium had never been distinguished between sodium until the eighteenth century. Before potassium was recognized as an element, potassium carbonate was mixed with animal fat to make soap.

    Read More

  • Aluminum

    1227 Words  | 3 Pages

    Aluminum is a lightweight, silvery metal. The atomic weight of aluminum is 26.9815; the element melts at 660° C (1220° F), boils at 2467° C (4473° F), and has a specific gravity of 2.7. Aluminum is a strongly electropositive metal and extremely reactive. In contact with air, aluminum rapidly becomes covered with a tough, transparent layer of aluminum oxide that resists further corrosive action. For this reason, materials made of aluminum do not tarnish or rust. The metal reduces many other metallic compounds to their base metals. For example, when thermite (a mixture of powdered iron oxide and aluminum) is heated, the aluminum rapidly removes the oxygen from the iron; the heat of the reaction is sufficient to melt the iron. This phenomenon is used in the thermite process for welding iron .

    Read More

  • The Element Iron

    351 Words  | 1 Pages

    Iron comes from the Latin word ferrum. From ferrum its symbol became Fe. The atomic number of iron is 26, and its atomic weight is 55.845. Iron is a magnetic, bendable, shiny white metallic element.

    Read More

  • Gold

    785 Words  | 2 Pages

    Gold, nothing can compare to this precious metal. A symbol of wealth and prosperity, it has been a value for explorers and adventurers and a lure for conquerors. Today it is vital to commerce and finance; popular in ornamentation, and increasing importance in technology.

    Read More

More about Aluminium

Open Document