The raw materials used to produce pig iron in a blast furnace are iron ore, coke, sinter, and limestone. Iron ores are mainly iron oxides and include magnetite, hematite, limonite, and many other rocks. The iron content of these ores ranges from 70% down to 20% or less.
This process is used to make iron. The limestone forms a substance called slag with the rock of the iron ore. The bottom part of the furnace is called the hearth. When it has filled with liquid pig iron and slag, the slag is removed. This is called skimming. Slag is lighter than iron and does not mix with iron.
Pig iron was originated in the early days by reduction or iron ores in blast furnace and when the total output of the blast furnace was sand cast into pigs which is a mass of iron roughly resembling a reclining pig. It is roughly of 20″ × 9″ × 4″ in size. It is produced in a blast furnace and is the first product in the process of converting iron ore into useful ferrous metal.
Pig iron is made by smelting iron ore into a transportable ingot of impure high carbon-content iron in a blast furnace as an ingredient for further processing steps. The traditional shape of the molds used for pig iron ingots was a branching structure formed in sand, with many individual ingots at right angles  to a central channel or ...
Limestone and dolomite flux and their use in iron and steel plant. Limestone is a naturally occurring mineral. The term limestone is applied to any calcareous sedimentary rock consisting essentially of carbonates. ... Dolomite is used as a slag former, slag modifier and as a refractory material. The process of iron making is the reduction of ...
The basis of slag is limestone used as auxiliary material in the production of iron and steel. While limestone may seem unrelated to the production of iron and steel, it actually is an essential auxiliary material that is added during the production process.
Nov 11, 2015· Iron ore, coke and coal is the main raw material for iron making process. Iron ore contains a certain amount of silica, the purpose of using limestone is to change silica and other impurities into ...
I, Pig iron is made in a blast furnace by smelting iron ore with coke and limestone. A. In general it has around 95 percent FE content, plus certain impurities such as carbon (say, 4 percent), and silicon, manganese, phosphorous and sulfur.
limestone in pig iron process,shibang-china This page is provide professional limestone in pig iron process information for you, we have livechat to answer you . 【More】 HowStuffWorks "Creating Steel" The pig iron, limestone and iron ore go into an open-hearth furnace Another way to create steel from pig iron is the Bessemer process .
Once it cools, this metal is known as pig iron. To create a ton of pig iron, you start with 2 tons (1.8 metric tons) of ore, 1 ton of coke (0.9 metric tons) and a half ton (0.45 metric tons) of limestone.
process of limestone in iron The raw materials used to produce pig iron in a blast furnace are iron ore, coke, sinter, and limestone. Iron ores are mainly iron oxides and include magnetite, hematite, limonite, and many other rocks.
Limestone is the reducing agent, without limestone the iron ore i.e Fe2O3 will never get reduced to Pig iron i.e Fe .. "calcination" should be lesser inside the blast furnace to reduce the coke rate that's why sinter is being used nowadays, as in sintering process limestone is calcinised outside the furnace which reduces the coke rate ...
Dec 29, 2012· Pig iron is the intermediate product of smelting iron ore with a high-carbon fuel such as coke, usually with limestone as a flux. Charcoal and anthracite have also been used as fuel. Pig iron …
Ingredients are pig iron, iron or steel scrap, limestone, and coke. The coke supplies the heat, and is added first. Added on top of these layers are layers of scrap, pig iron, limestone, more coke, more scrap, more pig iron etc. The close proximity of the fuel to the metallic ingredients makes the cupola a very efficient melting unit.
coke (also used as energy input to the process) or alternative reducing agents, limestone and dolomite. Steel production requires iron, steel scrap and lime (burnt limestone). The iron ore is smelted to produce an impure metal called "hot metal" when in liquid phase or "pig iron" when in solid phase.
limestone in pig iron process - crusherasia.com. limestone in pig iron process. Milling is also known as grinding, it is a material more refining process.A sharp object works by concentrating forces which creates a high pressure due to the very ...
The pig iron, limestone and iron ore go into an open-hearth furnace. It is heated to about 1,600 degrees F (871 degrees C). The limestone and ore form a slag that floats on the surface.
limestone in pig iron process Milling is also known as grinding, it is a material more refining process A sharp object works by concentrating forces which creates . Get Price And Support Online; limestone in pig iron process – Grinding Mill China.
The basic materials used for the manufacture of pig iron are iron ore, coke, and limestone. The coke is burned as a fuel to heat the furnace; as it burns, the coke gives off carbon monoxide, which combines with the iron oxides in the ore, reducing them to metallic iron.
limestone in pig iron process - CGM Project Case Iron Ore Smelting Process - Find Science &, Mar 13, 2010 The pig iron then undergoes a, with the contents of iron ore, limestone and, This process …
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.
I. PIG IRON IS MADE IN A BLAST FURNACE BY SMELTING IRON ORE WITH COKE AND LIMESTONE. Subject: ... In this process the pig iron is heated in a metal shell and air is driven through the smelting pig, oxidizing off carbon and some other impurities. 2. Depending on the analysis of original ore a lining can take care of additional impurities.
Limestone – Its Processing and Application in Iron and Steel Industry. Limestone is a naturally occurring and abundant sedimentary rock consisting of high levels of calcium carbonate (CaCO3) in the form of the mineral calcite.
Limestone Processing For Iron Production - … Pig iron - WikipediaPig iron is an intermediate product of the iron industry. Limestone Processing For Iron Production Pig iron has a …
In making cast iron from pig iron - the cruder form of iron - coke and limestone are added to pig iron and scrap iron in a furnace. Cast iron is more refined form of iron and has lesser carbon content as well. What exactly occurs in this process of making cast iron - what reactions happen in the furnace?
Chemical Grade Limestone (CGL) requires demanding specifications for physical and chemical properties and consistency. Produced at 8 locations in the Northeast region, for ironmaking processes. Blast Furnace – CGL is utilized to produce the slag which removes impurities from the iron ore reduction process to make the liquid pig iron.
While the loss of iron in the slag with an electric furnace running on pig steel would probably be greater than in the case of pig iron, owing to the weaker reducing atmosphere of the pig-steel furnace, it should not be so excessive as to prohibit the use of such a process under favorable economic conditions.