| Corrosion of refractories, a potential cause of their destruction, is dependent
on certain physico-chemical characteristics of both the refractories and of the
environment i.e. the fusible molten materials that they contain. The present literature
survey aims at indicating these characteristics together with the studies of
reactions between these materials. It has been indicated, for example, that the
refractory corrosion is primarily dependent upon factors such as the porosity and
pore size distribution of the refractory, the viscosity and surface tension of the
molten material, in addition to the time and temperature of the corrosive reaction.
The studies on mechanism of the refractory corrosion have been touched upon.
The various test procedures, some being more simulative of the actual service
conditions than others, have been presented. The most satisfactory test procedure
to be selected depends on the conditions existing during use of the refractories.
The suggestions to minimise the refractory corrosion have also been discussed.
At the end, the scope of further research on the topic has been indicated. |
