Calderys India Refractories Limited Nagar Road, Pune, Maharashtra

Simplicity of design, ease of construction and flexibility to accommodate different sizes of material are some of the few specialties in these types of Reheating Furnaces. Only limitation is the inability to heat the back face of the stock. In turn this leads longer residence time of stock inside furnace. From refractory angle, operating temperature and corrosion in presence of scales become important. Here again our products offer best lining solution.

The walking beam furnace offer distinctive advantages over others by allowing the heating of the back face of the stock. This also normally results in shorter heating time and shorter length of the furnace itself apart from operational flexibility. The temperature reaches upto 1250º C. Refractory here requires better thermal shock resistance and in certain areas are exposed to thermo-mechanical stresses. We offer complete range of refractories for such demanding application.

Realising need for increased BF Stack gunning activities in India, Calderys India decided to offer its services in this field. Calderys India has dedicated equipments for hot repairs of BF stack by Robot and team to perform the job. Today Calderys India has established itself as a proven agency for handling BF Stack gunning repairs in India. Calderys recommended products for Blast Furnace repairs:

These types of moving hearth furnaces are preferred when stock size and geometry varies a lot. Here heat storage can be optimized by using humps and grooves. Unevenness of the stock exerts strong thermo mechanical stresses in the hearth blocks. It requires refractory which should be thermal stock resistant and at the same time should withstand impact of scale. Calderys India offers entire range refractory products for burners, walls, hearth banks, hearth, roof and waste gas flue duct of Rotary hearth furnaces.

In these types of furnaces stocks move down the length of the furnace. It involves less investment for installation as well as maintenance. Temperature generally goes upto 1250º C. Refractory wear in this type of furnace is mainly due to erosion of hearth and skid protection. Here again we offer solution for entire length of the furnace which includes burners, roof, hearth, soaking area and outlet slope.

We propose high-performance solutions for whole cast house refractory management. It includes main, iron, slag, drain, tilting runners and Taphole frame (from the first installation to the maintenance) to ensure total reliability, achieve long campaigns, and reduce the maintenance downtime. We are considered as the market leader in monolithic refractory for runners. Calderys India has developed and established hot gunning practice for troughs in India. This practice helps customer to extend cast house life and comes handy to continue casting under unforeseen situations. Our products are established for other Casthouse floor equipment, such as runner covers, we propose customised products which provide quick and easy applications as well as long service life. Our products in Blast Furnace Trough have been extending reliable performance repeatedly. Troughs designed and maintained by us have improved performance bench marks of Trough life & performance reliability.

Calderys India has decades of experience in developing innovative monolithic refractory products and its applications techniques for reheating and heat treating furnaces of different sizes and capacities. Our offerings are based on energy saving solutions that improve the performance of the customer's equipment. We have sustained a long-lasting working relationship with the Steel industry (both FLAT AND LONG PRODUCTS) as well as OEMs based in India and oversees. We have been dealing with a wide range of furnaces: walking beam, walking hearth, pusher furnaces, and also rotary hearth, Tunnel Furnace, annealing and other thermal treatment furnace. We have unique experience of converting roof bricks in high capacity RHF to high performance Plastic Refractories. Today we are a reliable partner to all OEMs and users in India for designing, supplying and installing Plastic Refractories. We have a design, service and installation team with dedicated team of Engineers based at Nagpur, India. Subsequent to the merger with Calderys we have access to their innovative product range, global experience in Solution Providing, R&D know-how and design capabilities. Above strengths of Calderys India coupled with worldwide experience and presence of Calderys puts us in best position to be your partner to provide the most suitable and cost effective technical solutions that will attend to changes technological requirements as well as contribute to productivity and efficiency.

For any Iron and Steel Plant any unplanned shutdown leads to huge production losses. In order to prevent that Blast Furnace Hearth grouting is carried out. BF Hearth grouting is beneficial in a number of ways as tabulated below- It avoids shell deformations and damage due to hotspots It prevents further lining deterioration It fills cracks and crevices in remaining lining It prevents gas leakage from refractory wall.