Sinter plant - Wikipedia
18.09.2011 · Many countries, including India, France and Germany, have underground deposits of iron ore in dust form (blue dust). Such iron ore cannot be directly charged in a blast furnace. In the early 20th century, sinter technology was developed for converting ore fines into lumpy material chargeable in blast furnaces. Sinter technology took 30 years to gain acceptance in the iron-making domain, …
Use of Iron Ore Pellets in Blast Furnace Burden – …
Pelletizing is a process that involves mixing very finely ground particles of iron ore fines of size less than 200 mesh with additives like bentonite and then shaping them into oval/spherical lumps of 8-20 mm in diameter by a pelletizer and hardening the balls by firing with a fuel. It is the process of converting iron ore fines into ‘uniformed sized iron ore pellets’ that can be charged directly into a blast furnace. …
Why are fines (fine iron ore) not charged into a …
The reason fines aren’t charged to a blast furnace as loose powder is that the furnace depends on the hot-air blast at the base to produce a rapid flow of gases through the furnace. The gas flow will tend to blow fines back out of the furnace if t...
Agglomeration of Iron Ore Iron Ore Finesblue …
Agglomeration of Iron Ore: Iron Ore Fines/blue dust cannot be charged in the blast furnace directly since they block the passage for ascending gas inside the fee. So, they are agglomerated (by ignit-ing at lower temperature causing only interfacial fusion) into larger lumpy pieces with/without addition of additives like limestone, do-lomite etc. Two types of agglomerated products are commonly ...
Iron Ore Process From The Blast Furance
The Blast Furnace S Cool The Revision Website. Three substances are needed to enable to extraction of iron from its ore.The combined mixture is called the charge.Iron ore, haematite - often contains sand with iron oxide, fe 2 o 3.Limestone calcium carbonate.Coke - mainly carbon.The charge is placed a giant chimney called a blast furnace.The blast furnace is around 30 metres high and lined with ...
Ironmaking 101 – From Ore to Iron with Blast …
Natural or direct shipping iron ores contain between 50-70% iron and can be fed directly into the blast furnace. Fe 3 O 4 decomposes when heated to ferrous oxide (FeO) and ferric oxide (Fe 2 O 3) via Fe 3 O 4 → FeO + Fe 2 O 3. A specialized type of coal, called hard coal, is used to make coke, a porous form of carbon. Coke is a reductant or a stone that can reduce iron oxide to iron metal – especially …
Blast Furnace Operation - an overview | …
In general, all blast furnace feed materials require some form of processing before being deemed suitable for blast furnace needs. Fine and ultra-fine ferrous ores must first be agglomerated to produce sinter or pellets respectively. Lump ore may be charged directly to a blast furnace but only after it has been suitably sized and screened to remove overand undersize material. Lump ore, however, usually …
iron ore pellet blast furnace in oman
Blast furnace, a vertical shaft furnace that produces liquid metals by the reaction of a flow of air introduced under pressure into the bottom of the furnace with a mixture of metallic ore, coke, and flux fed into the top. Blast furnaces are used to produce pig iron from iron ore for subsequent processing into steel, and they are also employed in processing lead, copper, and other metals.
Blast furnace | metallurgy | Britannica
Blast furnace, a vertical shaft furnace that produces liquid metals by the reaction of a flow of air introduced under pressure into the bottom of the furnace with a mixture of metallic ore, coke, and flux fed into the top. Blast furnaces are used to produce pig iron from iron ore for subsequent processing into steel, and they are also employed ...
Blast furnace - Wikipedia
A blast furnace is a type of metallurgical furnace used for smelting to produce industrial metals, generally pig iron, but also others such as lead or copper. Blast refers to the combustion air being "forced" or supplied above atmospheric pressure.. In a blast furnace, fuel (), ores, and flux are continuously supplied through the top of the furnace, while a hot blast of air (sometimes with ...
Blast Furnace Charge (Raw Materials for Steel …
11.01.2013 · A blast furnace charge consists of coke, ore or sinter, and limestone. These materials must be in lumps of a certain size (40-60 mm). Larger lumps prolong the process of reduction and fluxing. Smaller lumps block the flue-gas passages and prevent a uniform descent of melting materials in the furnace. 2. IRON ORES: Ore is a metal bearing mineral. The most important varieties of iron ore are ...
HOW A BLAST FURNACE WORKS - Foundry Gate
Iron oxides can come to the blast furnace plant in the form of raw ore, pellets or sinter. The raw ore is removed from the earth and sized into pieces that range from 0.5 to 1.5 inches. This ore is either Hematite (Fe 2O 3) or Magnetite (Fe 3O 4) and the iron content ranges from 50% to 70%. This iron rich ore can be charged directly into
What is the size of iron ore which feeded in a …
However if the iron ore is crushed to a maximum size of 16 mm, at least 75% will be less than 9 mm and cannot be directly used. The agglomeration processes (sintering or pelletisation) to make them usable are costly. Therefore the ore is crushed to 25 mm or larger size and screened to remove - 10 mm fraction for agglomeration. The +10 mm fraction is sent to the blast furnace. Historically the sizes of iron ore …
Iron Ore Processing for the Blast Furnace
blast furnace process. The iron ore concentrate is now mixed and ready for the pelletizing process. Pelletizing A pellet plant contains a series of balling drums where the iron ore concentrate is formed into soft pellets, in much the same manner that one rolls a snowball, to make a pellet about the size of a marble (between 1/4" and 1/2"). Pellets are screened to meet the size specification ...
Iron processing - Ores | Britannica
If the lump ore is of the appropriate quality, it can be charged to the blast furnace without any further processing. Fines, however, must first be agglomerated, which means reforming them into lumps of suitable size by a process called sintering.
US9752206B2 - Plasma heated furnace for iron …
In the present pelletizing apparatus, the induration of iron ore concentrate pellets is achieved in a tunnel furnace heated by plasma torches, wherein the generation of CO2 by the conventional iron ore pelletizing processes is reduced by using electricity powered plasma torches instead of burning natural gas, heavy oil or pulverized coal in burners, thereby reducing considerably industrial ...