Crude steel production begins with the reduction process, where the iron ore reacts with carbon sources inside the blast furnace. The blast furnace requires different types of refractory products with resistance to thermo-mechanical and thermo-chemical reactions.

Ceramic Pad Products

Mullite and Alumina based products

Saint-Gobain Performance Ceramics & Refractories’ MS4 and MS4R ceramic pad products offer excellent stability and iron resistance – essential qualities for hearth pad applications. MS4 is manufactured using a standard mullite recipe, while both MS4 and MS4R are available in a range of circular and herringbone designs.

Material Solutions
References

Blast Furnace Area	Materials Solutions
Upper stack	Refrax 20 SBF Nitride bonded Silicon Carbide Mortar SiC P / Carbofrax 8S	SiC 85P Silicon Carbide Base Mortar SiC P	MS2R High Alumina	MS6 High Alumina Mortar Coral, Mortar, 336
Lower stack	Refrax 20 SBF Nitride bonded Silicon Carbide Mortar SiC P / Carbofrax 8S	SiC 85P Silicon Carbide Base Mortar SiC P	MS2R High Alumina Mortar Coral, Mortar AL 100 S or FP, 336	Sicanit Al3 Silicon Carbide Base Sialon Bond Improved alkali and oxydation resistance Mortar SiC P / Carbofrax 8S
Bosh and Belly	Refrax 20 SBF Nitride bonded Silicon Carbide Mortar SiC P / Carbofrax 8S	Sicanit Al3 Silicon Carbide Base Sialon Bond Improved alkali and oxydation resistance Mortar Sic P / Carbofrax 8S	Coranit 3S High Alumina Corundum Sialon bond Low thermal conductivity Mortar 336
Tuyere belt	MonoCoral High Alumina Precast Ultra-Low Cement Corundum Big Block Mortar 336	MonoGuard High Alumina Precast no cement big block Increased Iron and Slag resistance, high strength and stability Max. recommended temperature: 1800 °C Mortar 336	Sicanit TB Silicon Carbide Base Sialon Bond Brick assembly Mortar SiC P
Hearth	Coranit AL High Alumina Corundum Sialon bond Iron/Slag Corrosion resistant, good Abrasion and Alkali Corrosion Resistance Mortar 337	Coranit SlagR High Alumina Corundum Sialon bond 3rd generation Improved Mechanical Stability; better Slag & Iron and excellent Abrasion Resisitance Mortar 337
Ceramic Pad	MS4 Classical Mullite recipe Iron resistant and stable Mortar Coral, Mortar 336	MS4R High Alumina Iron resistant and stable Mortar Coral, Mortar 336	MULLFRAX 301 High purity mullite Iron resistant and stable Mortar Mullfrax 36