Refractory cement is widely used in iron and steel industry, mainly used for lining masonry, repair and protection. The following are its specific applications:

I. Blast furnace

Lining masonry: The lining of blast furnace needs to withstand high temperature and chemical erosion. Refractory cement is used to build the refractory bricks of blast furnace to ensure the tightness and integrity between bricks and prevent the infiltration of molten iron.

Repair of taphole and slag hole: refractory mortar can be used to repair refractory bricks of taphole and slag hole of blast furnace, and prolong its service life.

II. Converter

Lining building: The lining of converter needs high temperature resistance and slag erosion resistance, and refractory mortar is used to build the refractory bricks of converter to ensure the integrity and stability of the lining.

Slag splashing technology: In slag splashing technology, refractory mortar can be used to repair tiny cracks on the surface of furnace lining and improve the corrosion resistance of furnace lining.

III. Ladle and tundish

Ladle lining: refractory mortar is used to build the lining of ladle to ensure that ladle has good sealing and corrosion resistance at high temperature.

Masonry and repair of tundish: refractory mortar is used for masonry and local repair of tundish to prevent leakage and erosion of molten steel.

IV. Heating furnaces and hot stoves

Lining building: The lining of heating furnace and hot blast stove needs high temperature and thermal shock resistance, and refractory mortar is used to build these linings to ensure their stability under frequent temperature changes.

Repair of hot blast stove: refractory mortar can be used for local repair of hot blast stove to prolong its service life.

V. Continuous casting system

Masonry of submerged nozzle: refractory mortar is used to build submerged nozzle of continuous casting system to ensure its good sealing and corrosion resistance at high temperature.

VI. Performance requirements

In the iron and steel industry, refractory mortar needs to meet the following performance requirements:

High temperature stability: it can be used for a long time in the high temperature environment above 1000℃.

Corrosion resistance: it can resist the corrosion of high temperature slag and chemical media.

Bonding strength: closely combined with refractory bricks to form a solid overall structure.

Wear resistance: it can resist particle wear in high temperature environment.

The application of refractory mortar in iron and steel industry not only improves the service life of furnace lining, but also reduces the maintenance time and cost. It is an indispensable material in iron and steel production.