The JN series of converter gunning mix is formulated with high-quality magnesia, special binders and additives. It has the characteristics of high adhesion rate, fast sintering and erosion resistance. It is used to repair the weak parts of the furnace lining, so that the furnace lining can be corroded simultaneously to increase the life of the furnace and reduce the consumption of refractories. It is an ideal material for repairing various parts of the converter.