#ladle purge plug

[trlkrosaki]

Inside TRL Krosaki’s Flow Control Plant: Precision at the Core of Steelmaking

When it comes to managing the extreme conditions of molten metal handling, flow control refractories are essential. At the heart of this technology lies the TRL Krosaki flow control plant, a specialized manufacturing facility focused on producing high-performance components for steel and metal industries.

What is Flow Control?

Flow control refractories regulate the flow of molten steel from ladle to tundish during continuous casting. The flow control plant at TRL Krosaki manufactures:

Slide Gate Plates

Nozzles and Metering Systems

Porous Plugs and Purging Systems

Collector Nozzles and Well Blocks

These components ensure smooth, controlled steel flow, critical for achieving consistent quality in steel production.

A World-Class Flow Control Plant

Located in Belpahar, Odisha, the TRL Krosaki flow control plant is equipped with cutting-edge technologies, including:

CNC-controlled shaping and precision machining

Robotic inspection and automated assembly lines

High-purity raw material handling

Custom design and testing for specific customer needs

The plant combines Japanese engineering from Krosaki Harima with local innovation to deliver unmatched quality in flow control products.

Supporting India's Steel Growth

India’s booming steel industry depends on reliable flow control solutions. The TRL Krosaki flow control plant supplies leading integrated steel producers and secondary mills across the country, as well as international markets, helping improve operational safety and casting accuracy.

Innovation & Sustainability

The flow control plant is also a hub of sustainability and R&D. It uses:

Energy-efficient kilns

Recyclable materials and low-waste systems

Digital monitoring and analytics

In-house research teams focus on developing longer-lasting, wear-resistant flow control components, reducing overall cost for customers.

The Road Ahead

As steel production evolves, so does the TRL Krosaki flow control plant. Upcoming advancements include:

Smart refractory sensors for real-time performance tracking

AI-based flow design modeling

Expansion to meet rising domestic and global demand

Conclusion The TRL Krosaki flow control plant is more than just a production facility—it's a center of precision, innovation, and strategic value in the global steelmaking ecosystem. By powering the flow of molten metal with safety and reliability, TRL Krosaki continues to reinforce its leadership in the refractory industry.

[indofgl]

Record Breaking Performance with IFGL's Purging Refractories at JSW Bellary!

Kudos to JSW Bellary on setting a new record with a remarkable Purging Plug performance of 55 heats at SMS-3 using our top-notch 'Make In India' purging refractories. A single plug lasted for half the campaign life of a 160 MT ladle.

IFGL Refractories is thrilled to have contributed to this success and is excited about the future accomplishments ahead.

[cxrefractories]

How to improve service life of ladle purge plug

Ladle purge plug or porous plug is a critical component in ladle bottom purging system. Apart from the purge plug life its reliability, gas flow rate quality of steel produced etc are evolving as the most important parameters to judge the purge plug quality.

Methods to improve service life of ladle purge plug

The wear of the purging plugs mainly consist of erosion due to intensive liquid steel stirring, corrosion by aggressive iron-oxide rich slag at high temperature and, as well as the spalling of layers from the hot face, which is owing to horizontal cracking.In order to prolong the service life of purging plugs, many efforts have been made by adjusting the chemical components so as to improve the material properties.

1.The results showed that higher refractoriness and better iron-oxide-rich slag corrosion resistance could be achieved in the non-cement systems.

2. Systematically investigated the effect of cement contents on the mechanical properties and found that the phase compositions and microstructure can be optimized through adjusting the cement content in corundum castables.

3. Furthermore, Prepared three kinds of castables, of which physical properties were characterized along with their microstructures at both room temperature and high temperature to increase cold and hot mechanical strengths. It was concluded that the calcium hexaluminate phase in the matrix of the corundum-based low-cement castable enhances the cold and hot mechanical strengths.

As a part of ladle lining, the geometries of the purging plug may also influence their temperature distribution, stress responses, and service life. It was found that two optimal lining concepts were proposed to decrease heat loss through the steel shell and thermomechanical load at the hot face of the working lining.  

Ladle refining furnaces are widely employed in the modern steel-making process for decarburization, desulfurization, inclusion removal and homogeneous temperature and composition. As the crucial part of the ladle, purging plugs experience an intermittent thermal shock when the liquid steel is poured into and out of the ladle in cycles during the refining process. Moreover, an intense extra heat exchange occurs within the purging plug when the argon is continuously blown into the liquid steel through the slits assembled in the purging plug. Due to these severe service conditions, the working time of the purging plug, is less than that of the refractory lining of the ladle. Consequently, downtime is needed to repair or replace the purging plug, which leads to more energy consumption and lower production efficiency. Therefore, the service life of the purging plug has long been recognized as an important issue in improving steel-making production efficiency.

What are the causes of damage to a ladle purging plug?

Due to vigorous lancing (oxygen )

Due to Back Pressure when plug chowking

If Purging Plug well Block not patching regular

Due to boundary side oxygen lancing with high pressure.

The main reason of damage to refractory materials, including chemical erosion, mechanical abrasion and thermal stress. Thermal stress which is caused by damage to the refractory cracking the direct cause of damage.

The purging plug is an indispensable refining component; Its slit structure and distribution are important factors that influence refining efficiency.

To achieve homogenous temperature and composition of steel by fostering of slag metal refining reaction Argon gas is purged through bottom purging blocks into the steel bath. Purging is the most important activitiy in secondary steel refining process. For smooth running of the process with less downtime, plug performance need to align with operation without failure. Ladle Purging brick are widely used in the secondary refining process, and its service life determines the downtime and usage efficiency of the whole ladle.

Ladle Purge Plug

More details about ladle purge plug

What is purging in ladle?

To achieve homogenous temperature and composition of steel by fostering of slag metal refining reaction Argon gas is purged through bottom purging blocks into the steel bath. Purging is the most important activitiy in secondary steel refining process.

What is purging in steel plant?

Purging is an inerting method commonly used in safety-critical process chambers such as reactors to eliminate oxygen and moisture when operations are started up or shut down.

What does purging mean in steel ladle?

Dual gas purging is often done in a ladle to accelerate the refining operations in steel industries. The purged gas, mainly argon imparts momentum to the molten metal and establishes a turbulent recirculating flow in the melt, which generates shear stresses on the ladle walls.

What is ladle purging?

The purpose of ladle purging plug used by steelmaking factories is to remove harmful gases and impurities, adjust the composition, so as to complete the basic tasks of oxygen supply, slagging, stirring, heating and other steelmaking.

Article Source: How to improve service life of ladle purge plug Company name: Henan Changxing Refractory Materials Co.,Ltd More refractory products:https://www.cxrefractories.com/en-all-refractory-products Email:info@cxrefractories.com Website:https://www.cxrefractories.com

[yuyuangroup]

We are the Refractory manufacturer and integral contractor of ladle and offer a range of products including includes Magnesia Carbon bricks, Alumina Magnesia carbon bricks, High alumina bricks, Purging plug, metering nozzle, slide gate, along with Monolithic, like Ramming mix, Gunning and Spraying mixes, castable, mortar and ceramic fiber gasket. Visit us at https://www.ladleref.com/

[yuyuangroup]

Yuyuan Group is specialized in providing high-quality ladle bricks. The Yuyuan group offers more products, like Alumina Magnesia carbon bricks, High alumina bricks, Purging plugs, metering nozzle, slide gates, Ceramic fiber gasket, and many more. If you need, we can offer the best price and delivery time. contact us today! https://www.ladleref.com/

[yuyuangroup]

YuYuan group manufacturer the range of products such as - Magnesia Carbon bricks, Alumina Magnesia carbon bricks, High alumina bricks, Purging plug, metering nozzle, slide gate, along with Monolithic, like Ramming mix, Gunning and Spraying mixes, castable, mortar and ceramic fiber gasket. For more visit https://www.ladleref.com/

[cxrefractories]

The four most common damage mechanisms of magnesia carbon brick

1. Slag causes melting and dissolution of magnesia 2. The oxidation of carbon (1) Direct oxidation The carbon in the MgO-C brick is directly oxidized by oxygen in the environment, generally occurring below 1400℃. (2) Indirect oxidation Indirect oxidation generally occurs above 1400℃, and indirect oxidation is divided into intrinsic oxidation and external oxidation. 3. Corrosion caused by molten steel flow (1) The slag layer formed on the working surface of the magnesium carbon material could be washed away by the flow of the molten steel, or the slag is insufficient. (2) Repeated heating and cooling during the production process and the stirring force of the molten steel may cause the structure of the material to relax. 4. Hot peeling and mechanical peeling.

We Changxing Refractory Material Co.,LTD is professional manufacturer and supplier of refractory materials for more than 30 years. Our high quality ladle magnesia carbon bricks are good sold to many countries say South Africa, Bangladesh, Indonesia, Malaysia, etc. Shall any interests, welcome to contact us. Our team would make best to be your reliable partner!

Ladle Magnesia Carbon Brick:Magnesia carbon brick is made of fused magnesia and high carbon graphite, with antioxidant was added, and the phenolic resin was used as the binder for high pressure molding. MgO-C refractory bricks are widely used in steel industry.

Ladle Purging Plug:Ladle purging plug has been in the leading position in domestic and abroad over years. We have developed the series of corundum, chromium corundum, low silicon chromium corundum and corundum spinel one after another.

Ladle Slide Gate Plate:Slide gate plate is preferred products for big/medium ladle and continuous casting tundish. Alumina-carbon slide gate plates can meet the requirement of different steel grades.

Ladle Castable:Ladle castable has good workability, high strength, good volume stability, good abrasion resistance and thermal shock resistance, etc.

Article Source:The four most common damage mechanisms of magnesia carbon brick Company name: Henan Changxing Refractory Materials Co.,Ltd More refractory products:https://www.cxrefractories.com/en-product-solution Email:info@cxrefractories.com Website:https://www.cxrefractories.com

[cxrefractories]

Changxing Refractory offers Ladle refractory product with best quality. Main products: Magnesia Carbon Brick. Ladle Back Fillers, AMC Brick, Magnesia Alumina Carbon Brick, Ladle Purging Plug ,Ladle Purging Well Block,Ladle Upper Nozzle, Lower Nozzle, Slide Gate Plate,Ladle Castable.

[cxrefractories]

Five main functions of tundish

The continuous casting tundish was originally used for the heat preservation of molten steel, and its main purpose was to distribute and rectify molten steel. With the successful development of technologies such as slow cooling of molten steel, molten steel reheating technology, argon gas sealing technology, gas stirring technology, and removal of non-metallic inclusions in molten steel,?continuous casting tundish has become the most important part in the final stage of the steel smelting process. The main refining vessel is developing to a large scale.

1 Purification functionTo produce high-purity clean steel, install porous

ladle purging plug

at the bottom of the tundish or embed a porous tubular gas distributor between the working layer and the

permanent layer

, or install porous bricks on the slag retaining wall to blow argon to make argon bubbles. Float evenly from the bottom to promote the removal of inclusions. These devices can eliminate the increase of argon in the molten steel and the reduction of oxide inclusions in the molten steel at the initial stage of pouring, and reduce the defects caused by Al203 inclusions on the tin plate.

2 Temperature adjustment functionIn order to make the temperature difference of the molten steel before, during and after the tundish be less than 5℃ and close to the liquidus temperature during the pouring process, expand the equiaxed crystal area of the slab and reduce the center segregation, small scrap steel and iron injection can be adopted to the tundish. Powder and other measures to adjust the temperature of molten steel.

3 fine-tuning of ingredientsThe center hole of the

tundish stopper rod

feeds cored wires such as aluminum, titanium, boron, etc. To the mold to realize the fine adjustment of the microalloy composition in the steel, which not only improves the yield of easily oxidized elements, but also avoids nozzle blockage.

4 Refining functionAdd double-layer slag to the surface of the tundish molten steel to absorb the floating inclusions in the molten steel, or feed the calcium line to the tundish to change the form of AL2O3 inclusions to prevent clogging of the nozzle.

5 Heating function

In the tundish, induction heating and plasma heating are used to accurately control the molten steel pouring temperature within ±.3-5°C. In the initial stage of continuous casting, the tundish heating is used at the end of ladle pouring to compensate for the decrease in molten steel temperature and keep the molten steel temperature near the target. This is conducive to the stability of the pouring operation and improves the quality of the cast slab. During the pouring period, proper heating can compensate for the natural cooling of molten steel. The heating method uses induction heating and plasma heating.

Article Source：Five main functions of tundish Company name: Henan Changxing Refractory Materials Co.,Ltd More refractory products: https://www.cxrefractories.com/en-product-solution Email:info@cxrefractories.com Website:https://www.cxrefractories.com

[cxrefractories]

Seamless ladle lining can reduce the unit consumption of refractory materials by 50%

Magnesia carbon brick (MgO-C) has been used for many years as a refractory lining for ladle. In the 1980s, Japan developed a magnesia-aluminum spinel castable amorphous lining containing prefabricated spinel for use in ladle. In the 1990s, an in-situ spinel composition was formed in the second generation lining with fine magnesia and activated alumina added to the matrix. Different spinel castables are used in different ladle areas. At the bottom of the ladle, especially the ladle purging plug and wall bricks, the volume stability under high temperature and high pressure is the most important. High corrosion resistance and thermal shock resistance are also important in the process of high-speed molten steel production and when blowing in low-temperature stirring gas. Castables containing prefabricated spinel have become the standard for this application and provide optimal performance. The requirements for the side wall of the ladle vary. Since each steel cladding shell has some deformation after transportation, storage and processing, and because the inner lining is not absolutely rigid, one of the advantages is that stress relaxation can be used to avoid stress peaks causing cracks. Adding silicon powder to the castable formed by spinel to form a liquid phase will cause the castable to soften (a sharp drop in the RUL curve) to release thermal stress. The volume expansion caused by the in-situ spinel formation can close the seams on the surface. Therefore, the castable formed by spinel brings some advantages to the side wall of the ladle. This article believes that the combination of spinel and spinel is the best solution. This article provides a quick review of the ladle unshaped lining and innovative installation technology.

Advantages of unshaped lining for ladle:

(1) The replacement of magnesia carbon bricks with amorphous linings at the bottom and side walls of the ladle brings many advantages to the steelmaking process, mainly as follows: (1) The use time of ladle is extended; (2) The total number of ladle operations is reduced by 20%; (3) Compared with MgO-C bricks containing toxic and carcinogenic substances (phenolic resin, coal tar pitch, etc.), the castable does not have any harmful materials; (4) Reduce the unit cost of steel production; (5) Produce ultra-low carbon steel in a better operating environment, because there is no carbon increase in the ladle refractories; (6) The unit consumption of refractory materials is reduced by more than 50%. Compared with other amorphous linings, the last advantage is the most important. Technically, the unit consumption of refractory materials is reduced by more than 50%, which is based on the concept of seamless lining. When magnesia-carbon bricks are used as the lining of the ladle and the service life of the bricks is reached, it will be replaced by a new set of MgO-C bricks. However, for amorphous linings, the situation is completely different. In the first installation, the amount of castable is the same as that of bricks. Subsequent replacement of the lining at the bottom and side walls, if brick lining is used, all need to be replaced. If unshaped refractory is used, only the part of the lining (about 40% to 60%) in contact with molten steel needs to be replaced, and the undamaged the lining will remain in place. Until the end of the ladle operation and before the complete renewal of all the inner?linings of the ladle, including the necessary safe working layer, refractory materials can be saved by using the unshaped inner lining.

Article Source:Seamless ladle lining can reduce the unit consumption of refractory materials by 50% Company name: Henan Changxing Refractory Materials Co.,Ltd More refractory products: https://www.cxrefractories.com/en-product-solution Email:info@cxrefractories.com Website:https://www.cxrefractories.com