Metallurgist.in

Handbook for Metallurgists
Menu
  • Home
  • About
  • Glossary
  • Submit Articles
  • Contact Us

Principal Reactions of Steel-Making Process

Metallurgist January 11, 2013

EFFECT OF FURNACE ATMOSPHERE

Furnace atmosphere influences in following ways:

  1. The furnace atmosphere might be oxidizing or reducing. In case if the atmosphere is oxidizing than it favours oxidizing processes and in case of reducing nature it promotes reduction processes.
  2. The furnace atmosphere might content harmful impurities which if mixed with product might cause unwanted reactions and properties.
  3. In most cases, the furnace atmosphere is oxidizing, and therefore, oxygen can pass continuously from the atmosphere to metal.

PASSAGE OF OXYGEN FROM GASEOUS PHASE TO METAL

The passage of oxygen from the gaseous phase through slag to metal can occur in the following ways:

  1. By direct contact of oxidizing phase with metal.
  2. By beads (droplets) of molten metal which are always present in slag.
  3. Due to oxygen transfer from gaseous phase through slag to metal.

BLOWING METAL WITH OXYGEN OR AIR

When the bath is blown with air or oxygen, the furnace atmosphere also contains gas bubbles (O2, N2, CO, etc) which have passed through the bath. With a low intensity of blowing, gas bubbles simply pierce the bulk of the metal and, in case ,if blown with higher intensity metal droplets may turn out to be suspended in the gas flow.

OXIDATION OF CARBON

Steel making process almost always involves the reaction of carbon oxidation; which is one of the main reactions of the process. During oxidation of carbon, i.e. burning off of carbon, the metal is said to be ‘boil’, which is due to evolution of carbon monoxide. Bath boiling results in agitation of the metal, equalization of it’s composition and temperature, and increased surface of contact between metal and slag, which in turn accelerates all process at the metal slag interface.

Share
Tweet
Google+
Linkedin
Stumble
Email
Prev Article
Next Article

Related Articles

Preparation of Ores
1. Ore Crushing: Ore comes from mines in lumps up …

Preparation of Ores

Principles of Steel-making
Principal concepts of physical chemistry useful in steel making are; …

Principles of Steel-making

About The Author

Metallurgist

My name is Satyadeo Thakur and most of my friends call me Satya for short. I am a graduate of metallurgical engineering and a self-taught freelance designer specializing in graphic, user interface and web design. I love traveling to distant places and I am fascinated by food.

3 Comments

  1. Dibya

    I have been visiting your website for quite sometime now.Its very well. I’m also a metallurgist. And wrote a book on sponge iron and ferro alloys making, which will be published soon by a national publisher.

    May 15, 2013
  2. venkat

    In the ceramic materials temperature change anions and cations poisons change or not

    March 21, 2014
  3. venkat

    In the ceramic materials temperature change anions and cations poisons may be change . i want reason how it is ?

    March 21, 2014

Leave a Reply

Cancel reply

Search

Archives

  • June 2020
  • May 2020
  • January 2013

Meta

  • Log in

Metallurgist.in

Handbook for Metallurgists
Copyright © 2023 Metallurgist.in
Theme by MyThemeShop.com

Ad Blocker Detected

Our website is made possible by displaying online advertisements to our visitors. Please consider supporting us by disabling your ad blocker.

Refresh