A PROCESS FOR PREPARING THE TAP HOLE MASS FOR PLUGGING THE TAP HOLE OF BLAST FURNACE AND A TAP HOLE MASS THEREOF

摘要

Tap hole mass plays important roles in blast furnace cast house operation. Tap hole masses are unshaped refractory which are used to plug the tap hole of a Blast Furnace. Tap hole mass is a combination of different refractory materials, suitable binders and lubricants. The major functions of the tap hole mass are sealing the tap hole after metal & slag tapping, smooth removal of hot metal & slag after opening the tap hole and protection of hearth refractory. Tap hole mass is manufactured by using mixture of high alumina clay and grog with carbonaceous material, such as coke, pitch, powder resin, silicon carbide and lubricant. The current invention relates to use of suitable lubricant without affecting the quality of tap hole mass. The lubricant was tested and found suitable for application in tap hole mass.. The lubricant has higher flash point and high viscosity.