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Limestone Is Used Purifying Iron Ore In India

What is the use of limestone of in the extraction of iron

Limestone is used in iron extraction to remove impurities from the iron and becomes molten slag. The calcium carbonate (CaO3) in limestone catabolically reacts, forming calcium oxide(CaO) and carbon dioxide(CO2). CaO is highly reactive when subjec...

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MARUTI LIME-CHEM INDUSTRIES :: Uses of Lime :: Use of

Quicklime is used in varying amounts to remove silica from bauxite ore and for causticization in the manufacture of' alumina. The extent of its use depends largely on the quality of the bauxite used. Purer ores require less lime and more limestone (Sinter process) while ores high in impurities require more lime (Bayer process). In both cases, lime is required for desilification. Magnesium

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Limestone and Dolomite and their Use in Iron and Steel

08/05/2013· The limestone which is used by iron and steel industry in bulk quantity is a bedded type sedimentary limestone. The two most important constituents are calcite and dolomite. Limestone frequently contains magnesium carbonate, either as dolomite CaCO3.Mg CO3 or magnesite (MgCO3) mixed with calcite. Such rocks are termed as ‘dolomitic’ or ‘magnesian’ limestone. The mineral calcite

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what is the role of limestone in extraction of iron??

Iron is extracted from its ore, haematite, in a blast furnace. The ore is fed into the top of the furnace along with coke and limestone. The limestone decomposes in the hot furnace, forming calcium oxide. This reacts with the sandy impurities (silicon dioxide) to form a slag.

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Why are carbon and limestone mixed with the iron ore

Iron ore is used to make iron and steel eg haematite and magnetite. Iron is produced (extracted) in a blast furnace by reducing iron oxides with carbon and it is the carbon that removes the oxygen from the iron oxides the carbon is known as thereducing agent. Coke

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What is the use of limestone of in the extraction of iron

Limestone is used in iron extraction to remove impurities from the iron and becomes molten slag. The calcium carbonate (CaO3) in limestone catabolically reacts, forming calcium oxide(CaO) and carbon dioxide(CO2). CaO is highly reactive when subjec...

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limestone-mining Bharat Mining

Limestone is used as a flux in the blast furnace. The limestone is added to the iron ore burden of the blast furnace in the amount of ~117kg per tonne of “hot metal” (steelmaker’s slang for the liquid iron produced by the blast furnace). This produces the slag of 181kg per tonne of hot metal which contains most of the impurities: 38% SiO2, 36% CaO, 14% MgO, 9% Al2O3, plus minor amounts

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Limestone and Dolomite and their Use in Iron and Steel

08/05/2013· The limestone which is used by iron and steel industry in bulk quantity is a bedded type sedimentary limestone. The two most important constituents are calcite and dolomite. Limestone frequently contains magnesium carbonate, either as dolomite CaCO3.Mg CO3 or magnesite (MgCO3) mixed with calcite. Such rocks are termed as ‘dolomitic’ or ‘magnesian’ limestone. The mineral calcite

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Iron and Steel Lhoist Minerals and lime producer

Finely-crushed limestone is used as a flux in iron ore sintering. It adjusts the overall chemistry of the iron burden and plays a vital role in the formation of slag in the blast furnace process. Lime-based binders sometimes including special clays increase sinter plant productivity. Higher percentages of ultra-fine ore can also be combined with lime-based products with no loss of

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Extraction of Iron from its oxide Definition, Examples

Smelting method used in the extraction of iron definition Smelting is the process in which ore is mixed with purifying or heat generating substance like limestone and coke, they are heated at high temperature in an enclosed furnace. The charge consists of roasted ore, coke and limestone in the approximate ratio of 12:5:3. Coke burns to give carbon monoxide which reduces the oxide ore to

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Facts That Are Notable About Calcium Carbonate

Yet, since weathering is mainly caused by acid rain, calcium carbonate in the form of limestone is not used in building but it is only utilized as a raw/primary material for building substances. It is also used for purification of iron from iron ore in a furnace. Carbonates are calcined to form calcium oxide. Calcium oxides forms a slag i.e. stony waste matter of metals of impurities and

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Industrial Raw Limestone uses in agriculture,cement BMS

Limestone and CaCO3 are the same material, but used in different ways — the first is used as aggregate in the construction industry or as a ‘flux’ (used for removing chemical impurities) in the iron and steel industry, while the second is used in the chemical and manufacturing industries.

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who invented the process to purify iron ore to steel

machinery used for making steel from iron ore,production of iron. machinery used for making steel from iron ore Alternating layers of iron ore, limestone (a mineral used to purify process is a chemical change: the molten iron »More detailed

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Process Extracting Limestone Sport Hippique

As solid limestone or crushed limestone, it can be used by extracting iron from it's ore, to make . suijitupian106.jpg" /> Manufacturing process Home : Lafarge Cement . From the limestone quarry to the delivery of the end product, follow every step in the cement manufacturing process. Step 1: extraction of raw materials The raw materials needed to produce cement (calcium carbonate, silica

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How is Iron purified? (Please help me!)? Yahoo Answers

12/10/2010· The iron is then tapped from the bottom of the furnace to be further processed into steel or used to make iron castings. for each tonne of iron produced, there is about 370 kg of slag which being lighter than iron, floats on top of it and is tapped off higher up the furnace.for each tonne of iron produced the process uses 2 to 3 tonnes of air, 1.6 tonnes of iron ore, 1.6 tonnes of iron ore, 0

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