Magnesia-Carbon based Hot Repairing Mixand Gunning Mix for Wearing Lining of BOF Converter

These two refractory materials are used for periodic lining patching/repairing for BOf converter, so that a longer service

life of lining can be achieved.

Hot repairing mix, also known as run-down repairingmix, is an efficient way of repairing the wearing lining ofconverter barrel, as well as trunnion and taphole zone.During the repairing process, it is simply poured onto thewearing lining and then it starts to flow with a temperaturebetween 800C and1200C.While the converterisrotating, the refractory mass flows and forms an even layerwhich protects the lining from further wearing. Thisproduct features high adhesiveness, high fluidity (hightemperature),good erosion resistance and corrosionresistance.

Refractory gunning mix is used for accurate patchingfor BOF converter's lining in zones such as trunnion andslag line, where it is difficult for hot repairing mix toachieve 100% coverage. lt is manufactured from premiummagnesia or dolomite plus composite binder. lt featureshigh adhesiveness,low rebound rate,easy sinteringproperty, and good resistance to erosion & corrosion.