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How is Tin Manufactured? by Claire Jarrett
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How is Tin Manufactured? |
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Manufacturing
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Tinned food and tin packaging are frequently heard words in our modern time. What is this 'tin'? It is a silver white metal used as a basic chemical element, and also combined with other metals to be used for various purposes. Tin combined with copper forms bronze, and if combined with lead gives solder. It is corrosion resistant and this property makes it good to pack food items. Dating back to the bronze-age Tin has been in use in several ways and metalworkers are well aware of its uses. The process of manufacturing tin starts from mining and extracting tin from tin ore and it passes through various processes like concentrating, smelting, refining, separating byproducts and waste, and quality control. Tin deposits are found in abundance on earth and it is extracted through mining methods like underground mining, dredging, gravel pumping and open cast mining. Depending upon the grade of ore and deposit type, techniques like screening, wet and dry gravity method, magnetic and electrostatic separation methods are applied to treat the deposits. They are extracted from a base compound 'cassiterite' as they do not occur naturally by themselves. After purifying it is sent to the smelter who converts it into tin metal. Here carbon is mixed with tin and it is heated in a furnace to get molten tin metal. The melted tin is passed through an inclined surface and collected in a poling kettle leaving the impurities behind. Now it is poured into molds to form ingots or bars and sent for sale. The waste products are not much useful as they include sand, stones and soil. Slag which contains harmful products like arsenic, lead and other materials is produced during the smelting and refining operation of tin. Tin is used for many purposes, as food wrappers, tins and cans to store food items, as a combination with other metals, shelters etc. Stannous fluoride - a compound of tin - is added to toothpaste as a source of fluoride to prevent tooth decay. Bearings, which had greatly assisted the development of high-speed machinery and transportation, are manufactured using tin. Tin is also traded on the stock market, and although it is not as popular as gold and silver, it can be an interesting choice to trade on as the markets that drive its price are different from the more precious metals. A generous profit can be made trading tin if one chooses the right time to buy and sell. Tinware Direct offer tin box manufacturers and tin can manufacturers
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