Iron and Steel

Raj Ceramics is known as "Iron and steel industry best supplier", providing unparalleled quality and reliability. Elevate your operations with our top-notch products and services tailored to meet the demands of the dynamic iron and steel sector.

"Iron and steel industry best supplier"

Iron And Steel

Steelmaking has existed for millennia, but it was not commercialized on a massive scale until the late 14th century. Today there are two major commercial processes for making steel, namely basic oxygen steelmaking, which has liquid pig-iron from the blast furnace and scrap steel as the main feed materials, and electric arc furnace (EAF) steelmaking, which uses scrap steel or direct reduced iron (DRI).

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Ladle:

Ladle refining furnace, an essential process in secondary steelmaking operation, adjusts chemistry (chemical composition) of molten metal. The ladle process involves raising steel temperature and to control the chemical composition between tapping and casting, removing and/or modifying inclusions and acting as a buffer in melt shop logistics. Raj Ceramics has various products that find application in ladle operation. Move the pointer on the picture to know more about our products for different zones in ladle operation.

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Electric Arc furnace:
Electric Arc furnace is an alternate to basic oxygen furnace for iron making. EAF process is more economical for lower capacities (upto 150,000 MTPA) and non-continuous (intermittent) operations as opposed to basic oxygen furnace that requires significant capital expenditure and achieves economies at higher capacities with continuous operation.

Often, the input for EAFs are scrap iron, steel and other alloy materials. The process involves using electric current to melt scrap steel or DRI. A significant proportion of world steel today is produced via EAF method. Over the years, Raj Ceramics has innovated on various refractory application of EAF to ensure most economical refractory cost per ton of steel. Move the pointer on the picture to know more about our products for EAF operation.

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Tundish:

The tundish is often the last metallurgical vessel through which molten metal flows before solidifying in the continuous casting mold. During the transfer of metal through the tundish, molten steel interacts with refractories, slag, and the atmosphere. Thus, the proper design and operation of a tundish are extremely important for delivering steel of strict composition and quality. Refractory solutions in tundish plays an important role in controlling the operational parameters. Raj Ceramics, through its own innovation and technology transfers from leading manufacturers across the world has developed some of the most sophisticated refractory solutions for tundish operations. Move the pointer on the picture of tundish to know more about our products.

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Reheating furnace:

Reheating furnaces are used in hot rolling mills to heat the steel stock - billets, blooms or slabs - to the rolling temperatures of around 1200C which is suitable for plastic deformation of steel required for rolling in the mill. Reheating furnace is a continuous heating process, in which the steel stock is charged at the furnace entrance, heated in the furnace, and discharged at the furnace exit. Heat is transferred to the steel stock during its traverse through the furnace mainly by means of convection and radiation from the burner gases and the furnace walls. In this fast and continuous operation refractory composition plays an important role to control downtime of the furnace. Physical properties (CCS, RUL) of refractory solutions are important parameters to ensure consistent quality of operations. Raj Ceramics is a pioneer refractory solutions provider for reheating furnaces. Move the pointer on the picture of a typical reheating furnace to know more about our products.

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Ingot Casting:

Ingot casting is a conventional casting process for liquid steel. Ingot casting, once contributing to majority of steel production, today constitutes a small percentage of global steel production. In recent times, continuous casting of steel has replaced most of ingot casting of steel but ingot casting is still the only method of steelmaking for specific low-alloy steel and for special forging application where products of large dimension, high quality or small lot sizes are needed. Typical applications of ingot castings are shafts for power plants, turbine blades, conveying equipment, ship building, tool making etc.

Ingot casting involves molten steel to be poured down through vertical pipes made of refractory material to often bottom of the ingot. The quality of holloware used for pouring has a significant impact on the quality of steel. Raj Ceramics is a market leader in holloware products since 1990. The company has invested heavily into extrusion equipment and presses to ensure strict dimensional tolerances (which saves installation time and prevents any leaks). The product’s recipes and firing technique further ensure no NMP inclusion. Backed on its quality and innovation, Raj ceramics has been leaders in hollowware in India and exports to many continents including Europe, Middle East, Asia and Americas.

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Blast Furnace and Stove:

A blast furnace converts iron ore into pig iron through a continuous smelting process and is generally a part of integrated steel plant. A modern blast furnace is refractory lined to protect the furnace shell from high temperatures and abrasive materials inside the furnace. The refractory lining is often cooled from behind to enhance the protection and reduce wear and tear. Conditions of blast furnace differs greatly in different sections of the furnace and hence the need to have different refractory material for sections such as upper stack, middle stack, lower stack, belly, bosh, raceway, tuyere region and hearth. Raj Ceramics has various products that find application in blast furnace and stoves.

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Coke Oven:

Coke is used in blast furnace and made in conventional coking ovens by heating coal in absence of air. Coking coals are the coals which when heated in the absence of air, first melt, go in the plastic state, swell and resolidify to produce a solid coherent mass called coke. This coke is then used in a blast furnace as a source of energy (for heating) and reductant (to pick up oxygen from iron ore).

Coke ovens are generally lined with silica bricks because at normal coke oven battery operating temperatures, silica refractoriness is subject to minimum creep. Raj Ceramics is exclusive India partner for many leading silica brick manufacturers from China.

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