Torpedo Ladle Lining

Torpedo ladles convey hot metal from the blast furnace to the steel mill; occasionally, the liquid iron is purified in the ladle by removing impurities like S and Si. Thermal shock resistance, abrasion resistance, impact resistance, corrosion resistance, and, if the lining is carbon-bonded, oxidation resistance are all requirements for Refractory Lining. Al SiC C bricks were created to withstand the more demanding circumstances present in treated ladles. The use of this sort of liner has also grown increasingly widespread in untreated torpedo ladles. In order to repair and prolong the working lining life of a Torpedo Ladle, we work closely with our customers to provide a suitable selection of gunning and castable materials. The original Refractory Lining of RECPL's maintenance-free lining is intended to operate the whole torpedo ladle campaign without the need for shotcrete maintenance. As a result, the initial refractory installation's brick workmanship is crucial; every joint size must have a minimum thickness. Please get in touch with us right away to learn more about the top Refractory Contractor in India

Enhance The Lifespan of Your Torpedo Ladle with Refractory Lining

Over the past 25 years, steel-making techniques have seen significant modification. For instance, the secondary refining and pretreatment of molten iron, as well as the continuous casting ratio, have been used to separate the functions of refining from iron to steel into several processing phases. The demand for increased production, better quality, and lower costs becomes more urgent over time. As a result, refractories, which come into touch with the molten pig iron and steel during these several processing steps, have made amazing technological advancements.

Refractory Torpedo Ladle Lining requirements include resistance, corrosion resistance, and carbon-bonded oxidation resistance if the liner is—resistant to thermal stress, abrasion, and impact. Al SiC C bricks were created to withstand the more difficult circumstances in sterile ladles.

This liner has also become more frequently used in untreated torpedo ladles. We work closely with our customers to supply a proper assortment of gunning and castable materials to repair and extend the working lining life of a Torpedo Ladle.

What is Torpedo Ladle?

Using a torpedo ladle, molten iron is moved from blast furnaces to BOF converters. The Refractory lining of the working layer must survive chemical assault during De-Sulphurization or De-Siliconization procedures since hot metal is occasionally treated in the vessel to remove impurities like sulphur, silicon, etc. However, it must primarily survive the force of approaching iron, the abrasion of molten iron, and the thermal shock brought on by frequent filling and emptying. Torpedo Ladles represent an essential connection between the steel industry and the blast furnace operation.

Thermal shock resistance, abrasion resistance, impact resistance, corrosion resistance, and, if the Torpedo Ladle Lining is carbon-bonded, oxidation resistance are all requirements for Torpedo Ladle Refractory Lining. Al-SiC-C bricks were created. As a result, to withstand the more demanding conditions seen in treated ladles. In untreated torpedo ladles, the adoption of this kind of liner has also increased. Materials that may be cast are utilised by Refractory Engineering & Construction Pvt. Ltd. to repair and prolong the life of a Torpedo ladle's operating liner.

SHELL refers to the torpedo ladle's outer covering. Steel is used to make shells.
Venturi is the name of its conical portion.
The barrel is the term for its cylindrical portion. On the upper side of the barrel is the mouth. The mouth of the torpedo Ladle is filled with hot metal.
The torpedo ladle's Charge Pad is where hot metal is immediately poured into the torpedo
Refractory bricks are used to create the inner layer (linings)

However, they are susceptible to significant strain and wear. Weak areas in the Torpedo Ladle Lining must be found early to prevent major breakouts caused by damaged Lining. Otherwise, there will be time-consuming downtimes, expensive cleanup and repair work, and the potential for staff harm.

Why Refractory Lining?

The containers used to transport molten iron from blast furnaces to steel-making factories, known as torpedo ladles, have traditionally been coated with chamotte bricks. Preliminary processing of molten iron has gained popularity since the 1980s as a way to purge the metal of impurities by the dephosphorisation, desulphurisation, or de-siliconization processes. However, under these circumstances, Al2O3-SiC-C bricks, which are much superior in corrosion and thermal spalling resistance, were used to replace the standard chamotte brick Torpedo Ladle Refractory Lining, which had shown serious degradation throughout their lifetime. recommending the best liner design for the operational situation. To successfully prevent the steel shell from deformation, materials with much-reduced heat conductivity have recently been developed and utilised for Torpedo ladles. To prevent the brick surface from oxidising once the torpedo ladle has dried, bricks with a coating of outstanding oxidation resistance have also been produced. Midterm repair helps the repair cycle be optimised. Integrated iron and steel mills have also created gunning materials for midterm repair, successfully used to modify the rotation and timetable of Torpedo Ladle repair.

Factors influencing the current Torpedo Ladle Refractory Lining include:

Hot metal temperature
Slag chemistry
Metallurgical treatments
Holding time of the meta
Transportation time and distances
Thermal cycling rates

The service life of a torpedo-ladle car is governed by the thickness of the refractory in locations subject to rapid erosion. One is the torpedo side wall's slag line region, which was degraded by slag floating on the molten iron. Another is the torpedo ladle's bottom metal impact area. Refractory's service life may be effectively extended by efficient refractory use and by boosting its maintenance through timely and accurate examination at high temperatures.

The torpedo Ladle is cooled to room temperature and examined after a specific amount of molten metal has been carried to avoid metal breaking out from this location. The refractory with castables was frequently relined because it was repaired or relined as needed due to the inspection results. The refractory thickness metre for the thermal impact zone, which has two surface profilers, may be deployed at a torpedo repair facility to assess its measurement stability and Refractory thickness measurement accuracy. This will improve the accuracy of the refractory thickness maintenance.

Initially, damaged torpedo vehicle Lining bricks were fixed during intermediate repairs by spraying on an Al2 O3 - SiO2 substance. The Vibro-trowel coating process was then devised to quicken the deaeration of the coating material by adding vibrations to increase its endurance. The "shotcreting" approach eventually superseded the previous wet spraying technique since it required long hours of physical effort from several people and did not provide the coating material's intended level of adherence. At that time, an automatic shotcreting station was created and built to save labour and protect personnel from the very alkaline quick-setting admixture used for the coating job.

To operate the whole torpedo ladle campaign without the requirement for shotcrete maintenance, the original Refractory Torpedo Ladle Lining of RECPL's maintenance-free lining was designed to accomplish so. As a result, the brickwork used in the initial refractory installation is critical; every joint size must have a minimum thickness. To find out more about the best refractory contractor in India, please contact us right now.