Effective Lining for Furnaces Used to Make Cobalt

The reasons for the short life of the linings of furnaces used to make cobalt are analyzed along with the mechanism by which the refractories undergo wear. Arefractory lining of a new composition and design has been developed for Kuhlman furnaces. It is proposed that highly durable grade-MP periclase refractories based on fused grains be used in the lining. Specific designs of lining have been developed for refractories of grades MU and MP. The measures that were implemented have increased the durability of the linings of Kuhlman furnaces at the combine “Yuzhuralnikel’” (in Orsk) by a factor of 1.8 – 2.0.