Steel Foundry Refractory Lining Optimization
Summary:
The steel foundry refractory lining optimization study
has added to the current knowledge of refractory issues
in steel foundries in four main areas.
(1) Improved understanding of high temperature chemistry
and slag/refractory
interactions in acid and basic foundry steelmaking practices.
(2) Determination of the degree of magnesia dissolution
into basic slags at the
high temperatures and quite variable slag chemistries
utilized by steel foundries.
(3) Knowledge of the potential impact of ladle insulation
and pre-heat on tap
temperatures and the corresponding impact on steel foundry
energy efficiency.
(4) Knowledge of the nature and origin of defects in steel
castings that result in
the extensive grinding that is normal to current castings.
In almost every instance, the suggested refractory/process
modifications were proven to be both technically and economically
feasible. The difficulty in implementation of the proposed
changes relates to the "up front" expense and
the learning curve associated with any process modification.
These two issues were compounded by production slow downs
that are too common in the current market. Such slow downs
normally result in less energy efficient processing coupled
with reductions in capital or "up front" expenditures.
A return to historical norms should allow foundries to
implement the suggested modifications and then evaluate
the overall benefit.
Format:
Pages :9
Size: 104 kb
Author :University of Missouri-Rolla
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