Investigation of forsterite siphon brick after operation

Conclusions

The study of the worn-out refractories and gates showed that forsterite siphon brick is different from semi-acid and chamotte brick in the nature and degree of wear and tear.

When the metal passes through the siphon tube, the working surface of the forsterite refractory becomes saturated with iron oxides and some manganese oxides. Beginning at the working surface of the channel there is reduction of ferric to ferrous oxide, which falls off as we approach the outside surface of the brick.

On account of slight wear and tear in service and the absence of any signs of sweating, the use of forsterite siphon brick may be of practical interest.

The use of forsterite siphon brick requires further study. In order to be able to pass a final pronouncement on the effectiveness of its use, we must manufacture enough forsterite gate tubes and siphon brick for the complete bottom plate, and test it alongside chamotte and semi-acid parts.