Extraction of Aluminium Aluminium ore is called bauxite. Bauxite contains aluminium oxide‚ water‚ iron oxide and other impurities. The purified dry ore‚ called alumina‚ is aluminium oxide (Al2O3). The alumina must be molten for electrolysis to work‚ since the ions are not free to move in the solid state. Unfortunately‚ alumina has a high melting point (2040 °C) and it is not practical to do electrolysis at such a high temperature. In the middle of the nineteenth century it was found that alumina
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EFFECTS OF CORROSION • ELECTROCHEMICAL EFFECTS • FACTORS AFFECTING CORROSION • THE RUSTING OF IRON • IDENTIFYING ANODES & CATHODES • DIAGRAMMATIC SUMMARY • DIFFERENTIAL AERATION • DIFFERENT METALS IN CONTACT • CORROSION PROTECTION • THE CORROSION OF ALUMINIUM • THEORY SUMMARY • REVISION TEST • REVISION TEST ANSWERS 2 3 4 5 6 7 7 8 9-10 11-12 13-16 17 18 19-20 21 © JAK CHEMISTRY LEVEL 3C (CHM 315109) CORROSION (CRITERION 5) INTRODUCTION: Corrosion is a general term referring to the DESTRUCTIVE
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CHAPTER-1 COMPANY PROFILE 1. INTRODUCTION 1.1 AB0UT ADITYA BIRLA GROUP 1.2 GROUP COMPANIES 1.3 MANAGEMENT STRUCTURE 1.4 ABOUT HINDALCO 1.5 ORGANISATION AND CULTURE 1.6 ACHIEVEMENTS 1.7 HINDALCO HR VISION‚ MISSION & OBJECTIVES “We look upon the aluminum business as a core business that has enormous growth potential in revenues and earnings.” Our vision to be a premium metals major‚ global in size and reach……. The acquisition of Novel is a step in this
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of aluminium over the past six years. It can be seen from Figure 1 that the price of aluminium has fluctuated a great deal during this period. For example: between July 2008 and February 2009 the price fell by 57%; in August 2009 alone the price rose by 16%. In an essay of 1500 words or fewer‚ use economic analysis to explain changes in the price of aluminium over the period shown in Figure 1 and why the price fluctuations have been so great. Figure 1: The monthly LME spot price for aluminium in
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significantly very competitive without sacrificing quality relative to other techniques; and as such is the most attractive manufacturing process in the industry. These findings can be used for future design and manufacture of an efficient and effective aluminium matrix composite brake rotor for automotive and other applications. Keywords: metal matrix composite; brake rotor; product life cycle; historical development INTRODUCTION For the past 40 years‚ materials design has shifted emphasis on pursuing light
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ACKNOWLEDGEMENT This project has given me a perfect opportunity to see and know how the concepts of finance are applied in the Industry. The project has been a big learning experience for me and I would like to express my gratitude towards all the people who have guided me throughout‚ and without whose guidance and support this project would not have been completed successfully. I would also like to express my deepest gratitude and sincere regards to Mr. Ajay Joshi‚ Vice President (Finance
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the world leaders in the production of many commodities‚ including aluminium‚ iron ore‚ copper‚ uranium‚ coal‚ and diamonds. Although primarily focused on extraction of minerals‚ Rio Tinto also has significant operations in refining‚ particularly for refining bauxite and iron ore. As of March 2009‚ Rio Tinto is the fourth-largest publicly listed mining company in the world * Wide Product Range: The company produces aluminium‚ copper‚ diamonds‚ coal‚ iron ore‚ uranium‚ gold and industrial minerals
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Introduction Aluminium because of its low density‚ high tensile strength and resistance and resistance to corrosion is widely used for the manufacture of aeroplanes‚ automobiles lawn furniture as well as for aluminium cans. Being good conductor of electricity it is used for transmission of electricity. Aluminium is also used for making utensils. The recycling of aluminium cans and other aluminium products is a very positive contribution to saving our natural resources. Most of the recycled aluminium is melted
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Resistance Aluminium naturally generates a protective oxide coating and is highly corrosion resistant. Different types of surface treatment such as anodizing‚ painting etc. can further improve this property Electrical and Thermal Conductivity Aluminium is an excellent heat and electricity. This has made aluminum the most commonly used material in major power transmission lines. Reflectivity Aluminium is a good reflector of visible light‚ which
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Coach screws are heavy duty screws designed for metal to timber connections‚ or to join heavy timbers. Rivet Riveting is a way of joining metals or some other materials. Rivets are made from malleable metals such as iron‚ steel‚ copper‚ brass‚ aluminium or aluminium alloys. Screw eye (eye screw) Screw with a looped head. Larger ones are sometimes call lag eye screws. Designed to be used as attachment point‚ particularly for something that is hung from it. Spring toggle For fixing to cavity
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