The TRI-MIX G2 Tundish from Vesuvius plc - cleaner steel flow for continuous casting

Reviewed: ad hoc news B2B & Pro desk. Edited and checked on 2026-06-27, 02:24. Details in the imprint.

The TRI-MIX G2 Tundish from Vesuvius plc sits above a roaring slab caster, its refractory walls glowing dull orange while molten steel snakes through a controlled flow pattern instead of sloshing wildly at the edges. Operators feel the calmer bath straight away.

What TRI-MIX G2 does

The TRI-MIX G2 Tundish is a flow-control system that shapes how liquid steel travels across the tundish, using engineered dams and weirs to cut turbulence and capture inclusions before they reach the mould. According to the official Vesuvius product overview, TRI-MIX designs target lower reoxidation and inclusion carry-over for continuous casting linesofficial continuous casting solutions page.

In practice, plant engineers see it as a way to raise slab cleanliness without slowing down casting speed. Flow modifiers are arranged so the steel stream breaks into quieter zones, with residence time tuned and dead spots reduced for each tundish geometry.

How it feels in the bay

Stand next to a tundish fitted with TRI-MIX G2 and you notice the surface looks smoother, with fewer splashes hitting the slag line and a steadier meniscus below. That calmer top layer makes nozzle changes and sampling feel less hectic for the shift crew.

Sanjay Singh, a senior process engineer at a mid-size European steel mill quoted in an industry case study, describes TRI-MIX-style layouts as a "tidy way to gain cleanliness without ripping out the whole tundish" and highlights the practical benefit of predictable flow when switching grades mid-sequenceSteel Times International tundish design feature.

Cleaner steel, less rework

The TRI-MIX G2 concept aims at fewer defects downstream, especially for flat products that face demanding automotive and appliance customers. Cleaner slabs mean fewer downgrades, less scarfing and a quieter quality lab, which is why continuous casters keep fine-tuning tundish layouts.

Vesuvius emphasises the role of tundish design in reducing non-metallic inclusions and argues that modern flow-control packages support both productivity and quality for high-strength steelstundish refractories and flow-control detail. For mills under pressure from OEMs and regulators, that combination is attractive but still needs real-world confirmation with plant trials.

Integration with refractories

One consistent point in Vesuvius communication is that TRI-MIX G2 does not live alone. It is designed to work with specific tundish lining packages and pre-cast shapes, so the flow modifiers, dams and weirs match both wear patterns and thermal profiles across a casting sequence.

Some mills choose dense, robust linings to resist aggressive slags, while others accept slightly shorter life for more flexible configurations. TRI-MIX layouts can be adjusted to these choices, with Vesuvius engineers tweaking geometry during commissioning and early heats.

Operational pros and cons

On the plus side, operators often report a more predictable casting surface and less nozzle clogging when tundish turbulence is cut down. That helps when the bay is noisy and dusty, and crews work close to glowing steel while handling shrouds, powders and measurement probes.

The flip side is complexity. Any flow-control package adds hardware to the tundish, which can lengthen preparation time and complicate cleaning between sequences. Plant managers have to decide if the cleanliness gains and reduced defects justify the extra steps and spend.

Where TRI-MIX G2 fits

TRI-MIX G2 targets slab and bloom casters that run multiple grades, from basic carbon steels to more demanding micro-alloyed products. Many such mills sit in Europe, India and Latin America, where Vesuvius has long-established technical service teams and deployment experience.

For compact minimills with thin-slab casters, other flow-control approaches may compete. The tundish geometry and casting practice define which TRI-MIX variant is suitable, and some plants still rely on simpler baffle systems if budgets or production philosophies differ.

Stock context and listing

Net-net, TRI-MIX G2 Tundish underlines how Vesuvius builds its Flow Control franchise around clean-steel tools that stay close to operators and quality managers. Vesuvius shares (ISIN GB00B82YXW83) are listed in London, giving investors exposure to these industrial solutions alongside the company’s foundry and advanced refractories activities.

This article was AI-assisted and editorially reviewed. Product information without guarantee; prices and availability may change at short notice. No investment advice, no buy or sell recommendation. Stock-market transactions involve risks up to total loss.