FEUERFESTES MATERIAL AUS MAGNESIT UND KOHLENSTOFF.

摘要

A mix for forming a carbon-bonded refractory shape comprising from about 70 to 92 wt.% of a high purity magnesite and about 8 to 30 wt.% of a high purity graphite, and for each 100 wt.% of said magnesite and graphite, from about 1.5 to 6 wt.% of a carbon-containing bonding agent; said graphite containing at least about 98% carbon and having at least a majority by weight -65 mesh or finer particles and said magnesite containing at least about 98% MgO, and containing less than about 0.03% boron oxide, less than about 0.3% silica, and having a CaO/SiO2 weight ratio above about 2, and the resultant carbon-bonded refractory shapes and liners for metal processing equipment, especially basic oxygen furnaces, made from such shapes and the method of increasing the life of liners for such equipment and especially basic oxygen furnaces.