Steel mill molten metal

Molten metal at around 1,500°C in a steel mill, the foundation of steel production in Brazil and worldwide.

About this subject

Molten metal is the heart of steelmaking. At temperatures exceeding 1,500°C, pig iron or scrap is melted in furnaces such as the basic oxygen furnace or electric arc furnace. This glowing liquid is then transferred to ladles and sent to continuous casting, where it solidifies into slabs, blooms, or billets. Brazil is one of the world's largest steel producers, with major companies like Gerdau, Usiminas, and Vale (iron ore supplier). Key steel mills are located in Minas Gerais and Rio de Janeiro states, such as Usiminas in Ipatinga and CSA (Thyssenkrupp) in Santa Cruz. The process demands strict safety measures due to risks of explosions and burns; operators wear specialized protective gear and contact with water is strictly avoided. Slag, a byproduct of refining, is separated by density differences and reused in construction or as fertilizer. Interestingly, the color of molten metal ranges from orange-yellow to white as temperature rises, indicating the optimal pouring moment.

Frequently Asked Questions

What is the temperature of molten metal in a steel mill?

Molten metal reaches around 1,500°C to 1,600°C, hot enough to melt steel and metal alloys.

How is molten metal transported within the mill?

It is transported in refractory-lined steel ladles using overhead cranes to the continuous casting area.

What are the main hazards of working with molten metal?

The main hazards are severe burns, explosions from contact with water (instant vaporization), and material splashing.