High Alumina Bricks

The number indicates the Al₂O₃ content. Grades below 60% carry an AL code (AL-45 and AL-55, formerly HA-45 and HA-55) and grades from 60% an HA code. AL-45 is used for general-purpose and super-duty linings such as coke ovens and blast furnaces; AL-55 suits glass tank furnaces and stove checkers. AL-55 to HA-70 cover mid-range duty, including the cement rotary kiln burning zone and ladle linings. HA-80 and HA-90 are used for severe duty in refineries, petrochemical plants, steel ladles and the blast furnace hearth. As alumina content rises, refractoriness, slag resistance and price rise with it; open a grade for its full specification.

It depends on grade, application and atmosphere. Service ratings run from about 1300°C for AL-45 to 1600°C for HA-70 and above, and refractoriness (PCE) from about cone 34 for AL-45 to cone 38 for HA-90; the maximum service temperature is always lower than the PCE. Confirm the service rating on the manufacturer datasheet for your grade, and specify by application: soaking pits, ladles and blast furnaces each need different chemistries.

Steel plants are the largest user, for ladles, torpedo cars, blast furnace bosh and belly, and reheating furnace roofs. Cement rotary kilns use HA-60 to HA-80 in the burning and transition zones. Glass tank regenerators, petrochemical reformers, EAF roof, and coke oven jambs are other regular applications.

The standard (straight) brick is 230 × 115 × 75 mm. Beyond it we supply wedge, arch, key, side-arch, skew and special shapes drawn to your furnace ring drawings. Custom shapes are available from CUMI, Calderys and TRL Krosaki on request, typically 4–6 weeks lead time.

Pricing is per metric tonne (MT) and depends mainly on Al₂O₃ percentage, brand, shape complexity and order quantity. As a rough guide, AL-45 is the most economical high alumina grade and HA-90 costs substantially more per tonne. Special shapes and chemically bonded grades carry a premium. Send us a drawing and quantity for a firm quote.

Yes. Shanker Agencies is an authorised dealer for CUMI Super Refractories and supplies CUMI, Calderys and TRL Krosaki grades from our Delhi warehouse. Every dispatch ships with an original manufacturer test certificate. We have been supplying high alumina bricks since 1980 with on-site engineering support across India and 50+ export markets.