Article | REF: M7222 V1

Thermodynamic equilibrium in the steel industry - Slag and refractory

Author: Pierre PERROT

Publication date: March 10, 2011

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!


Overview

Français

ABSTRACT

Slag represents the mixture of molten oxides supernatant above cast iron or steel, it consists essentially of silica, alumina and lime. Refractory compositions are more varied, as they can be chromium or magnesium based. Slag is responsible for the interaction with the metal. By playing on its composition, it is possible to move an enhancing element towards the metal or, conversely, a deleterious element towards the slag. This article discusses slag and refractory focusing on the physical properties, such as viscosity and base number. The various thermodynamic slag models are then discussed, as well as the notions of element partition coefficients, and their capacities in of sulphur, nitrogen and phosphorus.

Read this article from a comprehensive knowledge base, updated and supplemented with articles reviewed by scientific committees.

Read the article

AUTHOR

  • Pierre PERROT: Professor Emeritus, Physical Metallurgy Laboratory - Lille University of Science and Technology

 INTRODUCTION

Slag is the name given to the mixture of molten oxides supernatant on cast iron or steel. They play an important role in controlling the distribution of elements between the metal, which must contain valuable elements, and the slag, which must contain harmful elements such as sulfur and phosphorus. .

The adage "take care of the slag and the steel will take care of itself" still applies today.

This article deals with slags and refractories, focusing on physical properties such as phase diagrams and viscosity, as well as on the notion of slag basicity.

Thermodynamic slag models, elemental partition coefficients, sulfur, nitrogen and phosphorus capacities are also discussed.

You do not have access to this resource.

Exclusive to subscribers. 97% yet to be discovered!

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!


The Ultimate Scientific and Technical Reference

A Comprehensive Knowledge Base, with over 1,200 authors and 100 scientific advisors
+ More than 10,000 articles and 1,000 how-to sheets, over 800 new or updated articles every year
From design to prototyping, right through to industrialization, the reference for securing the development of your industrial projects

This article is included in

Metal manufacturing processes and recycling

This offer includes:

Knowledge Base

Updated and enriched with articles validated by our scientific committees

Services

A set of exclusive tools to complement the resources

Practical Path

Operational and didactic, to guarantee the acquisition of transversal skills

Doc & Quiz

Interactive articles with quizzes, for constructive reading

Subscribe now!

Ongoing reading
Thermodynamic equilibria in steelmaking