Reinforcing unfired magnesia bodies and firing them without preliminary drying

Conclusions

A technology has been developed in industrial conditions for strengthening unfired (green) magnesia ware based on additions to the batch of a solution of sulfite liquor. The use of this technology made it possible to set the ware from the press directly on the kiln cars.

The important feature of the developed technology is the possibility of firing the ware without preliminary drying and without changing the firing schedule and output of tunnel kilns.

Test ware fired in a tunnel kiln without preliminary drying, in external appearance and properties were no different from those made by the usual method.

The developed technology for reinforcing the green ware made from basic bodies is recommended for use in existing plants, those being built and those being projected.

Setting of freshly pressed brick of magnesia bodies directly from the press onto kiln cars is specified in the projects for new factories.