US mining is dominated by Precambrian banded iron formation deposits around Lake Superior, in Minnesota and Michigan such deposits were also formerly mined in Wisconsin. For past 50 years, more than 90 percent of US production has been mined from Lake Superior deposits. None of now mined in US is “direct shipping” ore ready to be fed into iron- and steel-making process. ore is concentrated to raise
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· Crushing process is used to obtain in small size that can be reduced easily, Sintering process is used to obtain fine particles of in large size, As a result of crushing process & cleaning furnace huge amount of fine particles of are obtained which can not be used directly in high furnace directly, these particles must be treated to collect them in larger size to be
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The amount of in the body of an average-sized woman is approximately 2.3 grams, which makes up only about 0.006 of her total mass. For comparison, calcium makes up about 1.4 of the mass of a human being. Men’s bodies contain a little more overall, but women have more proportionally given smaller size
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Iron ore is the It is therefore essential for the production of steel, which in turn is essential to maintain a strong industrial base. Almost all 98% iron ore is used in steelmaking. Iron ore is mined in about 50 countries
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/ ˈ aɪ ər n / is a chemical element with symbol Fe from Latin: ferrum and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table.It is by mass the most common element on Earth, right in front of oxygen 32.1% and 30.1%, respectively, forming much of Earths outer and inner core.It is the fourth most common element in the Earth
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industrial process. processing processing making the primary objective of making is to release from chemical combination with oxygen, and, since the blast furnace is much the most efficient process, it receives the most attention here alternative methods known as direct reduction are used in over a score of countries, but less than of is made this way
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Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from dark grey, bright yellow, or deep purple to rusty red. The iron is usually found in the form of magnetite Fe 3O 4, 72.4% Fe, hematite Fe 2O 3, 69.9% Fe, goethite FeOOH, 62.9% Fe, limonite FeOOH·nH2O, 55% Fe or siderite FeCO3, 48.2% Fe. Ores containing very high quantities of hematite or magnetite greater than about 60% iron are known a
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in a huge container called a blast furnace. such as haematite contain III oxide, Fe 2 O 3.The oxygen must be removed from the III oxide in order to leave the behind
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