a punt a product of waste that comes from a blast furnace during the process of extracting iron from the iron ore

Mar 13, 2010 · Iron ore is obtained in the conventional method of open cast or underground mining and conveying the ore to the surface preparation are where it is crushed, washed, and transported to the smelter. Here the ore is put into a blast furnace along with limestone and coke and subjected to hot air blasting and heat which converts the ore to molten iron. This is tapped from the bottom of the furnace …

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iron | geoscience australia

iron | geoscience australia

The iron-ore bearing rock is first blasted and dug up from open pit mines. The ores from the major mines in Western Australia's Pilbara region are hauled from working faces to crushing and screening plants using trucks that can carry over 300 tonnes. There are three major Pilbara iron ore producers: BHP Billiton Ltd (BHP), Rio Tinto Ltd (Rio) and Fortescue Metals Group Ltd (FMG). Processing

iron and steel - chemguide

iron and steel - chemguide

Steel-making: the basic oxygen process. Impurities in the iron from the Blast Furnace include carbon, sulphur, phosphorus and silicon. These have to be removed. Removal of sulphur. Sulphur has to be removed first in a separate process. Magnesium powder is blown through the molten iron and the sulphur reacts with it to form magnesium sulphide. This forms a slag on top of the iron and can be removed

iron ore mining | techniques | metal extraction

iron ore mining | techniques | metal extraction

Deposits of iron ore such as haematite containing iron oxide are found in sedimentary rocks from which the oxygen is removed from the iron oxide in a blast furnace to give iron as a result since iron ores consists of the element iron combined with other elements, mostly oxygen. Haematite and magnetite are the most commonly found iron ore minerals

blast furnace - an overview | sciencedirect topics

blast furnace - an overview | sciencedirect topics

Blast furnace slag is a nonmetallic coproduct produced in the process in the production of iron from iron ore or iron scrap. It consists primarily of silicates, aluminosilicates, and calcium-alumina-silicates. The molten slag, which absorbs much of the sulfur from the charge, comprises about 20 percent by mass of iron …

steel production & environmental impact

steel production & environmental impact

The most common process is the use of a blast furnace to produce pig iron which is about 92-94% iron and 3-5% carbon with smaller amounts of other elements. Pig iron has only limited uses, and most of this iron goes on to a steel mill where it is converted into various steel alloys by further reducing the carbon content and adding other elements such as manganese and nickel to give the steel specific properties

iron processing | britannica

iron processing | britannica

The arrival of blast furnaces, however, opened up an alternative manufacturing route; this involved converting cast iron to wrought iron by a process known as fining. Pieces of cast iron were placed on a finery hearth, on which charcoal was being burned with a plentiful supply of air, so that carbon in the iron was removed by oxidation, leaving semisolid malleable iron behind

crusher a punt a product of waste that comes from a blast

crusher a punt a product of waste that comes from a blast

Extraction of iron chemistry of the blast furnace limestone is calcium carbonate caco 3 and it is added to the blast furnace to remove the impurities in the iron ore calcium carbonate is decomposed by heat in the furnace to give calcium oxide and carbon dioxide this is called thermal decomposition see examples of other carbonates

extracting iron - redox, extraction of iron and transition

extracting iron - redox, extraction of iron and transition

Iron is extracted from iron ore in a huge container called a blast furnace. Iron ores such as haematite contain iron (III) oxide, Fe2O3. The oxygen must be removed from the iron (III) oxide in

what waste gases are formed from a blast furnace? - answers

what waste gases are formed from a blast furnace? - answers

Feb 05, 2010 · Slag is the waste which is skimmed off the top of the molten iron that comes out of the blast furnace. It is a mixture of calcium and magnesium …

gcse chemistry - extraction of iron in the blast furnace

gcse chemistry - extraction of iron in the blast furnace

Limestone is calcium carbonate (Ca CO 3) and it is added to the blast furnace to remove the impurities in the iron ore. Calcium carbonate is decomposed by heat in the furnace to give calcium oxide (quicklime) and carbon dioxide

why is limestone added to the blast furnace during the

why is limestone added to the blast furnace during the

Dec 12, 2014 · The blast furnace is used for extracting iron from its ore. In summary, A mixture called the charge( iron ore-haematite, limestone-calcium carbonate, and coke-pure carbon) containing the iron ore

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