Anuj Traders

Steel

Steelmaking is the most refractory-intensive industry there is, and almost none of its lining problems are temperature problems. They are slag chemistry problems that show up as a groove at one specific height in the vessel.

Material systems we route here: Bricks · Castables · Ceramic Fibre

Where the lining is

Blast furnaces and stoves, BOF and EAF vessels, ladles — working lining, safety lining, slag line, well block and purging — tundishes with their impact pads, dams and weirs, runners and troughs, reheating furnaces, and the ducting that connects all of it. A single ladle is several different materials chosen for several different duties, which is why a ladle is quoted as a system and not as a tonnage of brick.

What takes it out

Chemical corrosion at the slag line, ahead of everything else. The slag keeps dissolving lining until it approaches saturation, so a slag under-saturated in exactly what your lining is made of will eat it fastest — and the band where the slag sits is what ends the campaign, not the bottom of the bowl. Behind that: erosion at the tundish impact zone under the shroud, thermal cycling on ladles that go cold between heats, and mechanical damage during de-skulling. On reheating furnace hearths the mechanism changes entirely — molten mill scale attacks high alumina brick at around 1200 °C, well below the brick's rating, which is why that hearth wants magnesite rather than more alumina.

How we specify against it

Chemistry first: basic linings against basic slags, high alumina against acid. Density and low open porosity are the second lever, not the first. Campaign life is counted in heats, and the only benchmark worth comparing against is your own vessel's previous campaign and what changed between them. Tell us the slag basicity and FeO content, the cycling and preheat practice, and where the wear is not, and the specification largely writes itself.

47 product lines across 3 categories