Steel mill molten metal

Molten metal poured into ingot molds at a steel mill: high-temperature precision in industrial metallurgy.

About this subject

Large-scale steel production begins in melt shops, where pig iron is converted into liquid steel at temperatures exceeding 1,500 °C. The molten metal is then poured into ingot molds or transferred via ladles for continuous casting processes. This critical stage demands rigorous control of chemical composition and temperature to ensure final product quality. Globally, the steel industry accounts for about 7% of CO2 emissions, driving research into low-carbon technologies such as green hydrogen. In Brazil, steel mills are concentrated in Minas Gerais, Espírito Santo, and Rio de Janeiro, leveraging high-grade iron ore deposits. The pouring stage is also a visual spectacle of light and heat, but requires personal protective equipment and automation for worker safety. The resulting steel supplies sectors from construction to automotive, and is one of the most recycled materials worldwide (about 85% of steel is recycled).

Frequently Asked Questions

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

Molten steel reaches temperatures between 1,500 °C and 1,600 °C, depending on the alloy composition.

How is molten metal transported in steelmaking?

The metal is transported in refractory-lined ladles, which are heat-resistant vessels moved by overhead cranes.

What is continuous casting?

It is a modern process where liquid steel is continuously solidified into slabs or billets, replacing the traditional ingot mold method.