1. Converter lining consists of insulation layer, permanent layer and working layer. The thermal insulation layer is usually composed of polycrystalline refractory fibers; Bricks used in different parts of the permanent layer are not exactly the same, and low-grade magnesia-carbon bricks, tar dolomite bricks or sintered magnesia-carbon bricks are used for masonry; The working layers are all built with magnesia-carbon bricks.

Second, converter repair: the maintenance method should be determined according to the position and degree of corrosion damage of lining bricks. Generally, furnace lining is maintained by repairing furnace charge or brick and spraying technology. Shotcrete consists of refractory (metallurgical magnesia), chemical binder (silicate), plasticizer and a small amount of water.

I hope it will help you and I hope it will be adopted.