• Home
  • Geography
    • Physical Geography
      • Geomorphology
      • Climatology
      • Climatic Regions
      • Oceanography
    • Indian Geography
    • Economic Geography
  • Environment
  • Science
  • Contact
  • New
  • Store
  • Newsletter
  • Ad Free
    • One Year Add Free Subscription @ just Rs. 49/- Know More

      Already subscribed? Login Here and Reload the Current Page.

      -------------- OR --------------

      Login with GoogleLogin with Facebook

      Manage Account. Questions? Contact us.

  • Books

PMF IAS

Notes for UPSC IAS Civil Services Exam

50% OFF on ALL  Geography GS PDF  Environment PDF  Sci & Tech CA PDF Major Crops PDF Art & Culture
PMF IAS > Geography > Economic Geography > Iron Ore Distribution across the World

Iron Ore Distribution across the World

Previous Post:Major Soil Types of India: Red Soils, Lateritic Soils & Alkaline Soils
Next Post:Iron Ore Distribution in India | Types of Iron Ore

January 24, 2016 by PMF IAS 5 Comments

Save 50% December Week-1 Current Affairs uploaded on PMF STORE

Table of Contents

  • Factors that influence the location of Iron and Steel industry
  • Iron Ore – Raw Material
    • Commonly found impurities in Iron Ore
      • Silicon
      • Sulphur
      • Phosphorous
      • Lead
      • Manganese
      • Tin
      • Oxygen
    • What exactly happens in a blast furnace?
      • Inputs in to blast furnace
    • Beneficiation = Improve Concentration of Iron
    • Why coke and not coal in smelting?
    • Role of limestone = Remove Sulphur
    • Reduction = Remove Oxygen
    • Pig Iron
    • Cast iron
    • Steel
    • Stainless steel
    • Wrought iron
  • Iron Ore Distribution Across the World
    • Iron Ore in China – Manchuria, Sinkiang, Si-kiang, Shandog Peninsula
    • Iron Ore in Europe – Ruhr, South Whales, Krivoy Rog, Bilbao, Lorraine
    • Iron ore in Africa – Transvaal, Liberia
    • Iron ore in Russia, Kazakhstan – Ural region, Magnitogorsk
    • Iron Ore in North America – Great Lakes [Mesabi Region], Labrador
    • Iron Ore in South America – Carajas, Itabira, Minas Geriais
    • Iron Ore in Australia – Pilbara Region, Koolyanobbing, Iron Duke, Iron Knob
Share
WhatsApp
Tweet
Email

Iron Ore – Raw Material, Impurities in Iron Ore, What exactly happens in a blast furnace? Smelting, Beneficiation. Iron Ore Distribution Across the World.

Factors that influence the location of Iron and Steel industry

  • Raw materials – iron ore, coal, limestone, etc.
  • Transportation and other infrastructure – road, rail, ports etc.
  • Investment and Entrepreneurship = banking facilities, human capital for managerial roles.
  • Labour – unskilled to semi-skilled workforce for manual operations, skilled workforce for technical operations.
  • Market – construction industry, automobile industry etc.
  • Government policy – Development agenda, land acquisition, ease of doing business = labor laws, unambiguous and fair taxation policy, least government interference, less red tapeism, quick environmental clearance [Read more from: www.mrunal.org/geography].

Iron Ore – Raw Material

The below data is important for Prelims [Will be helpful to answer some logic based questions in mains]

  • To understand about the factors that influence the location of Iron and Steel Industry, we have to understand about iron ore smelting.
  • Smelting is a process of converting ore to metal by removing impurities.

Commonly found impurities in Iron Ore

Silicon

  • Found in small quantities.
  • Slightly raises the Strength and Hardness of Steel.
  • Acts as a de-oxidizing Agent ==> small quantities is good. [Oxides decrease the strength of Iron]

Sulphur

  • A VERY harmful element.
  • Forms Iron Sulphide which is a very brittle
  • Greatly reducing the Strength of Steel ==> very bad.

Phosphorous

  • Combines with Iron to form a Phosphide.
  • It increases the hardness and Tensile strength of Steel.
  • It SERIOUSLY affects the ductility and resistance to shock or impact ==> bad.

Lead

  • Added to all classes of Steel to improve the machinability of the Steel.
  • It improves tool life ==> small quantities is good.

Manganese

  • A powerful and most effective de-oxidant.
  • Has a good effect on Sulphur ==> small quantities is good.

Tin

  • It forms a low melting point brittle film round the grain boundaries making the Steel practically useless ==> very bad.

Oxygen

  • Has a bad influence on the properties of steel ==> very bad. [Oxides make Iron and steel weak]

Of the impurities, some are beneficial when present in small quantities while the others are harmful no matter what their proportion is.

So, the unwanted impurities must be removed and this is done by smelting iron ore in a blast furnace.

What exactly happens in a blast furnace?

  • In a blast furnace, fuel (coke), iron ore, and flux (limestone) are continuously supplied through the top of the furnace.
  • A hot blast of air (sometimes with oxygen enrichment) is blown into the lower section.
  • In a blast furnace, iron oxides are converted into liquid iron called “hot metal”.

[Oxides make iron brittle. To make iron strong the oxides need to be removed]

Inputs in to blast furnace

  • Ore == iron ore,
  • Fuel == coke,
  • Flux == limestone,
Output
  • Final product è liquid slag, liquid iron (pig iron) and gases.

Beneficiation = Improve Concentration of Iron

  • Ore is either Hematite (Fe2O3) or Magnetite (Fe3O4) and the iron content ranges from 50% to 70%.
  • This iron rich ore can be charged directly into a blast furnace without any further processing.
  • Iron ore that contains a lower iron content must be processed or beneficiated to increase its iron content.

[Beneficiation è Improves the concentration of iron ore]

Why coke and not coal in smelting?

  • To separate impurities, iron needs to be melted.
  • The coke is the fuel that melts iron.
  • Coal has many impurities and the most dangerous one is sulphur.
  • Coal is cooked to produce coke. This process is called destructive distillation.
  • Coke is a fuel with few impurities and a high carbon content.
  • The cooked coal, called coke contains 90 to 93% carbon, some ash and sulfur but compared to raw coal is very strong.

Role of limestone = Remove Sulphur

  • It is acts as flux (a substance mixed with a solid to lower the melting point, especially in smelting).
  • Limestone melts and reacts with Sulphur to form Slag (All solid and liquid impurities).

[Limestone marries Sulphur and takes it away from Iron == Very Good]

CaCO3 = CaO + CO2

The CaO formed from this reaction is used to remove sulfur from the iron.

FeS + CaO + C = CaS + FeO + CO

  • The CaS [newly married couple] becomes part of the slag.
  • The slag is also formed from any remaining Silica (SiO2), Alumina (Al2O3), Magnesia (MgO) or Calcia (CaO) that entered with the iron ore or coke.
  • The liquid slag then trickles to the bottom of the furnace where it floats on top of the liquid iron since it is less dense.

Reduction = Remove Oxygen

  • Oxygen in the iron oxides is reduced (removed) by a series of chemical reactions.
  • 3Fe2O3 + CO = CO2 + 2Fe3O4
  • Fe3O4 + CO = CO2 + 3 FeO
  • FeO + CO = CO2 + Fe

CO or CARBON MONOXIDE is produced by burning coke.

So CO and CO2 are the gaseous pollutants coming out of blast furnace.

Pig Iron

  • Pig iron is the intermediate product of smelting iron ore.
  • Iron (Fe) = 93.5 – 95.0%
  • Silicon (Si) = 0.30 – 0.90%
  • Sulfur (S) = 0.025 – 0.050%
  • Manganese (Mn) = 0.55 – 0.75%
  • Phosphorus (P) = 0.03 – 0.09%
  • Titanium (Ti) = 0.02 – 0.06%
  • CARBON (C) = 4.1 – 4.4% [The strength of steel can be varied by varying the carbon content]

Cast iron

  • Carbon content greater than 2%.
  • Carbon (C) and silicon (Si) are the main alloying elements.
  • Cast iron tends to be
  • Applications: automotive industry parts, cast iron pan.

Steel

  • Carbon content is up to 2.1% (by weight).

Stainless steel

  • Steel alloy with a minimum of 5% chromium content by mass.
  • Nickel is another important element of steel alloy.
  • Also contains manganese, molybdenum, and other metals.
  • Stainless steel does not readily corrode, rust or stain with water as ordinary steel does.

Wrought iron

  • Cast iron assumes its finished shape the moment the liquid iron alloy cools down in the mold.
  • Wrought iron is a very different material made by mixing liquid iron with some slag.
  • The result is an iron alloy with a much lower carbon content.
  • Wrought iron is softer than cast iron and much less tough, so you can heat it up to shape it relatively easily, and it’s also much less prone to rusting.
  • Wrought iron is what people used to use before they really mastered making steel in large quantities in the mid-19th century.

Iron Ore Distribution Across the World

Iron Ore in China – Manchuria, Sinkiang, Si-kiang, Shandog Peninsula

Iron Ore in China – Manchuria, Sinkiang, Si-kiang, Shandog Peninsula

Iron Ore in Europe – Ruhr, South Whales, Krivoy Rog, Bilbao, Lorraine

Iron Ore in Europe – Ruhr, South Whales, Krivoy Rog, Bilbao, Lorraine

Iron ore in Africa – Transvaal, Liberia

Iron ore in Africa – Transvaal, Liberia

Iron ore in Russia, Kazakhstan – Ural region, Magnitogorsk

Iron ore in Russia, Kazakhstan – Ural region, Magnitogorsk

Iron Ore in North America – Great Lakes [Mesabi Region], Labrador

Iron Ore in North America – Great Lakes [Mesabi Region], Labrador

Iron Ore in South America – Carajas, Itabira, Minas Geriais

Iron Ore in South America – Carajas, Itabira, Minas Geriais

Iron Ore in Australia – Pilbara Region, Koolyanobbing, Iron Duke, Iron Knob

Iron Ore in Australia – Pilbara Region, Koolyanobbing, Iron Duke, Iron Knob

Primary References: NCERT Geography, Indian Geography by Kullar [Amazon and Flipkart]

Share
WhatsApp
Tweet
Email
If you are finding our work useful, you can help us! Get our PDF Notes OR Contribute
Save 50% Save 50% Save 50%
Previous Post:Major Soil Types of India: Red Soils, Lateritic Soils & Alkaline Soils
Next Post:Iron Ore Distribution in India | Types of Iron Ore

Filed Under: Economic Geography, Geography

Search and compare the prices of Books atAmazon

Product Recommendations

Books for GS


Challenges to Internal Security of India (Third Edition)
Challenges to Internal Security of India (Third Edition)
Rs. 186 34% OFF
Rs. 285 26 new from Rs. 100
Buy Now
Amazon.in
Free shipping
Challenges to Internal Security of India
Challenges to Internal Security of India
Rs. 295
10 new from Rs. 260
Buy Now
Amazon.in
Internal Security | For Civil Services Main Examination | GS Paper 3 | Third Edition | By Pearson
Internal Security | For Civil Services Main Examination | GS Paper 3 | Third Edition | By Pearson
Rs. 305 6% OFF
Rs. 325 25 new from Rs. 225
Buy Now
Amazon.in
Free shipping
Last updated on December 12, 2019 8:00 PM

Featured Links

Subscribe to Pmfias.com Email Newsletter  Geography Notes (Static + Current Affairs) for GS UPSC CSE  Environment Notes (Static + Current Affairs) for GS UPSC CSE  Suggested Books for General Studies UPSC CSE Suggested Books for Geography Optional CSE  Download PPTs of Pmfias.com YouTube videos  Download Astronomy Notes for Prelims  Geography Notes (Static + Current Affairs) for GS  Environment Notes (Static + Current Affairs) for GS  Science and Technology Current Affairs PDF & DOC Major Crops Static Notes + Indian Agriculture Current Affairs)  Save 50% on All Pmfias PDF and DOC notes  Subscribe to Pmfias Ad Free at Rs. 49 per year Sponsored Link: Art & Culture by Nextgenias
December Week-1 Current Affairs uploaded on PMF STORE

Featured Posts

geography-notes-pdf-gs-upsc-ias-cse

Geography Notes PDF for UPSC IAS Civil Services Exam

Origin - Evolution - Life - Earth

Origin and Evolution of Life on Earth

Cavern - karst landforms - karst cave

Karst Landforms & Cycle of Erosion | Stalactite & Stalagmite

tides-two tidal bulges-tide formation

Tides: Spring Tide & Neap Tide| Tidal Bulge | Tidal Bore

Tornado formation

Thunderstorm | Thunder & Lightning | Tornado

Indian Administration S R Maheswari

Copyright © 2016-19 Pmfias.com. All rights reserved | Terms & Privacy | Amazon and Flipkart Affiliate Disclosure | Contact | Advertise