The thermodynamics and kinetics module is part of the ferrous metallurgy course. This module explores the thermodynamics and kinetics behind the removal of carbon, oxygen, sulfur, hydrogen, nitrogen and phosphorus from steel, which are essential to the production of steels tailored to the demands of the consumer or specific applications.
Desulfurisation
Full Code
MET0101220
Module Type
E-learning
Description
Sulphur is present in solid steel as manganese sulphide (MnS) inclusions. Their volume fraction, size, shape, and distribution depend on the sulphur content, oxygen content, solidification rate, degree of hot and cold deformation and hot working temperatures. These MnS inclusions have several effects on the processing and properties of steel. These effects are mainly detrimental, as these inclusions are more plastic than steel and, hence, during deformation they act as crack initiation sites and weakness zones. In this module the desulphurisation process will be explained in detail. Different parameters and techniques to use it will be explained.
What you will learn
- Explain why controlling sulphur content is important;
- Interpret the sulphur specifications; the use of slags for desulphurisation; the calcium injection;
- Identify the advantages of sulphur removal; the kinetics factors of desulphurisation; the addition element in the ladle stirring;
- Distinguish the acidity or basicity in the desulphurisation slag.
Module content
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