Non-ferrous metal smelting — aluminum, copper, zinc, lead, nickel, and precious metals — subjects refractory linings to a unique combination of challenges: low-viscosity molten metals that penetrate microscopic pores in brickwork, highly reactive slag chemistries, and complex vapor-phase attack from sulfides and halides. Each metal imposes its own specific set of refractory requirements.
Firebrics manufactures high-alumina bricks with controlled porosity for aluminum holding and melting furnaces, magnesia-zirconia bricks for copper converter slag lines, and dense castables for zinc retorts and lead blast furnaces. Our Mexico smelting project demonstrates our capability to supply high-volume international orders with consistent quality and short lead times.
Key Application Zones
Low-wetting, low-porosity high-alumina or silicon carbide bricks resist aluminum metal infiltration and fluoride vapor attack in electrolytic and secondary aluminum furnaces.
The Peirce-Smith converter and anode furnace tuyere zone and slag line demand magnesia-based bricks with exceptional resistance to copper-rich mattes and fayalite slags.
Silicon carbide and dense alumina bricks for zinc retort distillation at 1000–1100°C — superior resistance to zinc vapor infiltration and reducing atmosphere degradation.
Lead reverberatory furnaces and blast furnace hearths — high-density magnesia-chrome or direct-bonded magnesia bricks resist galena-rich mattes and lead oxide-bearing slags.
Recommended Products
High Alumina Bricks
Low-porosity (≤18%) high alumina bricks for aluminum melting furnace walls and floors — minimal wetting angle with molten aluminum, long campaign life in secondary smelting.
View ProductMagnesia-Zirconia Bricks
High ZrO₂ magnesia bricks for copper converter slag lines and anode furnace tap holes — outstanding resistance to fayalite slag penetration and thermal shock during tapping.
View ProductConventional Castable
Low-porosity castables for launder linings, spout covers, tilting furnace surrounds, and complex-geometry areas in non-ferrous casting facilities and holding stations.
View ProductNon-Ferrous Smelter Consultation
Tell us your metal type, furnace design, slag chemistry, and campaign life target. We'll specify the correct refractory grade for each zone and provide a complete bill of materials.