We can compare conventional- and thin slab casting with the Twin Roll Casting-Technology (TRC). Depending on the product and installation, a thin slab caster plant will have the caster with mould oscillation and drives, the reheating devices, and 5—8 rolling mill stands with the discharge and coilers, including auxiliaries of total 40’000—70’000 kW installed. Against this, the TRC has the twin roll drives and after the tensioner a single or double 4-high inline stand, the discharge and coilers with a max. installed power of 4000—7000 kW.
Comparison of process length and installed power of thin slab caster versus Mainstrip.
Compared to conventional slab- and thin slab casting technologies, twin roll casting significantly reduces the energy requirements by avoiding reheating furnaces and several hot rolling mill stands. The same can be said with respect to the green-house gas emission.
Both the energy requirements and the greenhouse gas emission are at around 10% of the conventional thin slab caster technology.