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Gangue-
In mining, gangue(pronounced "gang") is the commercially worthless material that surrounds, or is closely mixed with, a wanted mineral in an ore deposit. It is thus distinct from overburden, which is the waste rock or materials overlying an ore or mineral body that are displaced during mining without being processed.
Wiki User
∙ 10y ago
Wiki User
∙ 12y agoThe most common impurity in iron ore is silicon dioxide and other silicates.
Wiki User
∙ 11y agoit's 'tapped' off the surface or sort of scooped and sets a bit like a crunchie hard but bubbly and lumpy more cinder toffee like I suppose
Wiki User
∙ 13y agoarsenic , bismuth etc
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When oxygen is blown into pure iron to remove impurities Wont it react with Iron itself to give iron oxide?
Oxygen is not blown into pure iron, it is blown into molten iron ore (many impurities) and coke has been added to the mix as well. the coke reacts with the impurities and the oxygen to purify the iron ore.
What ore is copper?
Copper ore is called CHALCOPYRITE.
What is the method for purifying iron?
After iron ore is mined it is crushed into a powder then injected into a blast furnace. Under the extreme temperatures the ore melts and since iron is more dense than the impurities, it sinks to the bottom. This leaves a film of "slag" (impurities) on top. The slag is then skimmed off so only the metal remains.
What do you call a rock that contain s a high concentration of valuable mineral?
it is called an ore
How does limestone remove impurities during the extraction of iron?
Limestoneis calciumcarbonate(CaCO3) and it isaddedto theblast furnacetoremovetheimpuritiesin theironore.Calciumcarbonateisdecomposedbyheatin thefurnaceto givecalciumoxide(quicklime) andcarbon dioxide.This is calledthermal decomposition(see examples ofother carbonates).
How did iron extract from the ground?
Smelting: Mined out of the ground, raw ore is a mixture of materials called ore proper and loose earth called gangue (waste). The ore proper is separated by crushing the raw ore are simply washing away the lighter soil. Breaking down the ore from its impurities is more difficult.
Is iron ore homogeneous?
no because it contains impurities
What type of resource is iron ore?
Iron is a natural resource. It is found in nature as Iron Ore, which is iron with oxygen and other impurities. These impurities are removed by heat treating the Iron Ore and melting away the impurities, due to different melting points of the impurities.
How do you separate gold from impurities?
you use an ore to separate gold from impuritties
How do you get it out of the ground and make it into the metal?
First you have to mine it which gives you ore. then the raw ore has to go through the smelting process which separates the impurities from the metal.
Why is it hard to extract a metal from its ore?
The ore contain frequently the metal in a compound and also have many impurities. The concentration of the metal is generally low.
When oxygen is blown into pure iron to remove impurities Wont it react with Iron itself to give iron oxide?
Oxygen is not blown into pure iron, it is blown into molten iron ore (many impurities) and coke has been added to the mix as well. the coke reacts with the impurities and the oxygen to purify the iron ore.
What must be done to iron ore to produce element iron?
They need to smelt it to get all the impurities out
Why is limestone added to the blast furnace during the extraction of iron?
Iron ore contains the impurities sand and clay, which are silicon oxides. Limestone is added to remove these impurities.
What did Henry Bessmer invent?
The method to make steel. The Bessemer method blows air into the hot iron ore to remove the impurities from the ore and this makes steel.
Is iron ore a homogeneous or heterogeneous substance?
Pure Iron is considered as Homogeneous. Whereas, Iron with rust or other impurities is Heterogeneous.
How Is Iron Ore Purified using Carbon?
Iron ore, carbon (also called 'coke') and limestone are heated in a blast furnace. The carbon reacts with oxygen blasted into the furnace from the bottom to form carbon monoxide. Carbon monoxide then reduces the the iron ore to molten iron and becomes carbon dioxide in the process. The limestone in the furnace melts the impurities and decomposes to calcium oxide (quicklime). Quicklime and impurities mix together to form 'slag'. The slag floats on top of the molten iron so that the iron can be drained off at the bottom.
