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The formation of accretions or clogging of Tundish Nozzles in the continuous casting of steel is detrimental both to caster productivity and to eventual inclusion content of the final product. The cause of the clogging is related to a combination of operating criteria including ladle slag practice, tundish refractory, deoxidation methodology and temperature. To assess the effect of various slag components on clogging a mineralogical and rheological study was conducted on both plant and simulated accretion material. Minerals belonging to the lime-alumina-silica system such as hibonite, gehlenite, mullite, spinel and corundum, all having solidification temperatures at or above steelmaking temperatures, were most prevalent. In Mn-rich melts larnite, hibonite and a glassy phase were predominant. The rheological studies confirmed the formation of a significant solids fraction near steelmaking temperatures for basic melts whereas high (>30w/o) Mn melts were glassy. As well, the plate composition of the gating system was also deemed to contribute to the problem, with ZrO2 being preferable to Al2O3. Results are discussed with a view to designing tundish slags to minimise formation of refractory solids while maintaining reasonable compatibility with refractory and gating system practice.

Integral submerged nozzle: this nozzle does not need Tundish Nozzle, and its shape is long, generally more than 700mm. There are two forms. One is the built-in nozzle, which is installed from the inside to the outside of the tundish. The nozzle is an integral structure with good sealing; The other is the external nozzle, which is installed from the bottom of the Tundish to the inside. At present, it has not been used in China. Combined Submerged Entry Nozzle : its form is composed of Tundish Nozzle and Submerged Nozzle. This nozzle is short, generally less than 400mm. In use, the upper end of the Submerged Nozzle is connected with the lower end of the Tundish Nozzle, and its lower end is inserted into the mold. Sliding Nozzle type Submerged Nozzle: This Submerged Nozzle is equivalent to the lower nozzle of sliding nozzle. The submerged nozzle is connected with the lower nozzle of the sliding nozzle or the lower sliding plate.

Anyang Jinrong Metallurgical Materials Co., Ltd. is located in the Donggaoping Industrial Zone, Long'an District, Anyang City, the ancient city Anyang, one of the seven ancient capitals of China. Our factory is a professional manufacturer of tundish refractory materials. The main products are: Zirconia Tundish Nozzle, Zirconia Insert, Quick Change Nozzle, Tundish Nozzle, Tundish Metering Nozzle, Tundish Well Block, and we focus on supplying the full solutions for all kinds of refractories used on ladle & tundish in metal industry. The factory integrates scientific research and development, production and sales, and is favored by users for its advanced consciousness, advanced technology and excellent quality. On October 31 ,2020, the business staff of Anyang Jinrong Metallurgical Materials Co., Ltd. rushed to Shanghai to participate in the 20th Shanghai International Metallurgical Industry Exhibition and the 6th Shanghai International Refractories Exhibition held at the Shanghai New Expo Center. During the exhibition, the staff of the company carefully explained the customers who came to the booth. The company`s tundish products were recognized and supported by many customers. This exhibition allowed more customers to realize that Jinrong's good products are made from raw materials. How strict requirements are to the products, so that more customers will favor Jinrong's products!

Common Problem With Refractories For Tundish Refractories For Tundish including permanent layer ca-stable,working layer dry material,Ccm Tundish Nozzle,Tundish Well Block,slag retaining wall series and three pieces of continuous casting. Tundish Nozzle is the channel through which the molten steel enters the mold from the tundish, and needs to withstand the erosion of the molten steel and the sharp changes in temperature; the Well Block plays the role of protecting and fixing the nozzle and does not directly contact the molten steel. Zirconia Nozzle is mostly made of Zirconia Insert and high-aluminum outer, and the Tundish Well Block is generally made of high-aluminum materials. Tundish Nozzle With Zirconia is easy to crack during the pouring process,leading to steel infiltration,which often forces continuous casting to block production or abnormal shutdown. The analysis believes that the Zirconia Nozzle cracking is mainly due to the poor thermal shock resistance of the Zirconium Insert. Solution:The bulk density of the Zirconia Insert should not be too high. The highest the BD,the worse the thermal shock resistance. Appropriately thickening the nozzle body can prevent molten steel from seeping out.

What is a Quick Change Nozzle in Steel Making? The Zirconia Quick Change Nozzle used in Tundish Hydraulic Quick Chang Mechanism for billet continuous casting, which plays a role in controlling the flow of molten steel. The molten steel flows into the crystallizer evenly and stably through the zirconia Quick Change Nozzle, which is a necessary condition to ensure the continuous casting. The expansion of the zirconia Quick Change Nozzle will lead to too much molten steel flowing into the product, and the casting machine is forced to increase the pulling speed and cause a steel leakage accident. The casting machine often stops pouring because the zirconia Quick Change Nozzle expands, bursts, or falls off. In the early stage of continuous casting development, the continuous casting time was short. Ordinary zirconium Quick Change Nozzles made of zirconia can meet the requirements. The content of Zirconia Insert is 72%-85%. When the continuous casting time is greater than 500min, the zirconia reacts with certain components of molten steel and decomposes, which leads to the expansion of the zirconia Quick Change Nozzle. Ordinary zirconium zirconia Quick Change Nozzle can no longer meet the requirements of use. A zirconia Quick Change Nozzle made of zirconia with better erosion resistance must be used, with a zirconia content of 93%-95%. The zirconia Quick Change Nozzle is resistant to erosion and has good thermal stability, which can realize multi-furnace continuous casting, improve the efficiency of the casting machine, and reduce the production cost.

Well Block main raw materials for bauxite,magnesia,graphite,after precision ingredients,pressure forming,low temperature drying,can be made with mother-buckle positioning block brick, Purging Plug and other special-shaped brick,but also according to the user's different steel-making environment and requirements set block brick brand. Tundish Well Block features: It has high corrosion resistance,matched with zirconium sizing nozzle,no deformation,no crack and other advantages.Mainly used for continuous casting tundish and Tundish Nozzle matching use. The ladle block is the block of the water inlet and the breathable brick.But the principle is the same:the Metering Nozzle.

Stopper Rod is one of Refractories For Tundish which installed in tundish to control the flow of molten steel from tundish to crystallizer.Stopper Rod And Nozzle is divided into aluminum carbon and magnesium carbon,suitable for casting different kinds of steel. All kinds of bar heads designed by digital model are suitable for continuous casting of large billet,small billet,rectangular billet,round billet,large slab,thin slab and so on.The product has good anti erosion performance,anti erosion performance;Stable flow control in the process of casting,tight closure after the completion of casting etc. The shape and size of the plug are determined by the capacity of the Tundish Nozzle Material,the height of the steel surface and the size of the horn shape and aperture of the Tundish Nozzle.The plug rod head is provided with an integral plug rod with a hollow,blowing argon hole or a breathable plug.Fixing method is the key,a metal pin fixing,a thread fixing. Stopper Rod is mainly used for opening and closing tundish.In addition to automatically controlling the flow of molten steel from tundish to crystallizer,the plug rod can also blow argon and other inert gases into tundish through the argon hole of the plug rod.The plug rod also has the function of controlling steel flow and purifying.

Without refractory materials most of the scientific and technological inventions and developments we know today would not have been possible. The existence of virtually everything we see around us, or use in everyday life, is in some way dependent on refractory materials. Refractories are therefore facilitating or enabling materials, and are essential to the successful operation of any industry in which high temperatures are used1,2,3. The word `refractory` is derived from the Latin word, `refractories`, which means stubborn 4. These materials resist high temperatures, have high-quality mechanical and thermomechanical properties, have high corrosion resistance, act as a heat buffer between the walls of the containing vessel and the hot charge, and conserve process heat1,4,5. Reliability and long service life are required from materials when put into operation. Refractory cost is therefore expressed in terms of tons of product produced, i.e. the cost of the refractory material is weighed against useful life and replacement cost. Anyang Jinrong Company is a professional manufacturer of refractory materials, mainly produce Zirconia Insert, Zirconia Tundish Nozzle,Tundish Upper Nozzle,Tundish Lower Nozzle,Tundish Well Block,Submerged Entry Nozzle,Ladle Nozzle,Ladle Upper Nozzle, Ladle Lower Nozzle, Ladle Slide Gate Plate,Porous Plug.Over the past 28 years, our company have become a leading refractory manufacturer at home and abroad.

The formation of accretions or clogging of Tundish Nozzles in the continuous casting of steel is detrimental both to caster productivity and to eventual inclusion content of the final product. The cause of the clogging is related to a combination of operating criteria including ladle slag practice, tundish refractory, deoxidation methodology and temperature. To assess the effect of various slag components on clogging a mineralogical and rheological study was conducted on both plant and simulated accretion material. Minerals belonging to the lime-alumina-silica system such as hibonite, gehlenite, mullite, spinel and corundum, all having solidification temperatures at or above steelmaking temperatures, were most prevalent. In Mn-rich melts larnite, hibonite and a glassy phase were predominant. The rheological studies confirmed the formation of a significant solids fraction near steelmaking temperatures for basic melts whereas high (>30w/o) Mn melts were glassy. As well, the plate composition of the gating system was also deemed to contribute to the problem, with ZrO2 being preferable to Al2O3. Results are discussed with a view to designing tundish slags to minimise formation of refractory solids while maintaining reasonable compatibility with refractory and gating system practice.

Common type of tundish nozzle In the process of continuous casting steel will be used to a variety of nozzle,these nozzle not only has good corrosion resistance,but also good high temperature resistance,even if it is subjected to high temperature liquid iron,will not cause damage to the nozzle.Tundish nozzle is a small container through which molten iron flows into the tundish,so the quality of tundish nozzle also needs to be strictly tested,so that it can be safely applied in continuous casting. Sliding nozzle valve:the sliding nozzle valve is equipped with gating control feedback system to maintain the fixed casting speed.The special refractory technology has been able to control the flow of tundish,ladle,etc.The mechanism is hydraulically operated and has a 3 slide plate system with the middle plate for adjusting the control base plate and the submerged nozzle to keep it in place.If the tundish fails,these small mechanisms can be removed from the tundish,which is especially suitable for troubleshooting confined areas such as between the tundish and the mold. Tube changing device:used to connect tundish stopper to replace immersed nozzle during pouring and extend service life of tundish.In order to facilitate argon blowing operation,it is convenient to close and start to cut off the steel flow when the plug rod is out of control.The tube changer is operated by pneumatic or hydraulic pressure. Tundish sliding plate instant replacement method:Since the sliding nozzle was popularized and applied in tundish,the"instant"replacement method of sliding nozzle sliding plate without interruption operation was developed. According to different continuous casting conditions,the tundish nozzle type used is also different.

Refractory materials are non-metallic materials with a refractoriness not less than 1580°C, good resistance to thermal shock and chemical attack, low thermal conductivity and low expansion coefficient. Refractory materials are widely used in metallurgy, chemical industry, petroleum, machinery manufacturing, silicate, power and other industrial fields, and are used the most in the metallurgical industry, accounting for 50% to 60% of the total output. Great Varieties: There are many types of refractory materials, usually divided into ordinary refractories (1580~1770℃), advanced refractories (1770~2000℃) and special grade refractories (above 2000℃) according to their refractoriness; according to their chemical characteristics, they are divided into acidic refractories, Neutral refractories and alkaline refractories. In addition, there are refractory materials for special occasions. Anyang Jinrong`s products are advanced refractories, Tundish Nozzle Material and Refractories For Steel Ladle are best used in continuous casting. Ingredient content: Acidic refractories are mainly composed of silica, and commonly used are silica bricks and clay bricks. Silica brick is a siliceous product containing more than 94% silicon oxide. The raw materials used are silica, waste silica bricks, etc., with strong resistance to acid slag erosion, high load softening temperature, and no shrinkage or even slight expansion after repeated calcination; However, it is easily corroded by alkaline slag and has poor thermal shock resistance. Silica bricks are mainly used in thermal equipment such as coke ovens, glass melting furnaces, and acid steel furnaces. Clay bricks use refractory clay as the main raw material and contain 30% to 46% alumina. They are weakly acidic refractory materials with good thermal vibration resistance and corrosion resistance to acidic slag, and are widely used. Neutral refractories are mainly composed of alumina, chromium oxide or carbon. The corundum product containing more than 95% alumina is a high-quality refractory material with a wide range of uses. Chrome bricks with chromium oxide as the main component have good corrosion resistance to steel slag, but have poor thermal shock resistance and low deformation temperature under high temperature load. Carbon refractory materials include carbon bricks, graphite products and silicon carbide products, which have low thermal expansion coefficient, high thermal conductivity, good thermal shock resistance, high temperature strength, resistance to acid, alkali and salt corrosion, especially weak acids and alkalis. Good resistance, not wetted by metal and slag, light weight. It is widely used as a high-temperature furnace lining material, and also as an autoclave lining for petroleum and chemical industries. Alkaline refractories are mainly composed of magnesium oxide and calcium oxide, and magnesia bricks are commonly used. Magnesium bricks containing more than 80%-85% of magnesium oxide have good resistance to alkaline slag and iron slag, and have higher refractoriness than clay bricks and silica bricks. Mainly used in open hearth furnace, oxygen blowing converter, electric furnace, non-ferrous metal smelting equipment and some high temperature equipment. Refractory materials used in special occasions include high temperature oxide materials, such as aluminum oxide, lanthanum oxide, beryllium oxide, calcium oxide, zirconium oxide, etc., refractory compound materials, such as carbides, nitrides, borides, silicides and sulfides Etc.; high-temperature composite materials, mainly cermets, high-temperature inorganic coatings and fiber-reinforced ceramics. Common refractory materials: Frequently used refractories include AZS bricks, corundum bricks, direct-bonded magnesia-chrome bricks, silicon carbide bricks, silicon nitride bonded silicon carbide bricks, nitrides, silicides, sulfides, borides, carbides and other non-oxide refractories ; Refractory materials such as calcium oxide, chromium oxide, aluminum oxide, magnesium oxide, and beryllium oxide. Frequently used heat-insulating refractory materials include diatomite products, asbestos products, insulation boards, etc. Frequently used unshaped refractory materials include repair charge, refractory ramming material, refractory castable, refractory plastic, refractory mud, refractory gunning material, refractory projection material, refractory coating, lightweight refractory castable, gun mud, etc.

At present, the global output of refractory materials is about 45 million tons, and China's refractory output accounts for about 65% of the global refractory materials. Other output is mainly concentrated in countries and regions such as the European Union, the CIS, the United States, Japan, and South Korea. The development of foreign refractory materials industry has the following characteristics: 1)Increase the concentration of refractory industry production through mergers and acquisitions, reorganization and elimination of backwardness. In developed countries since the 1990s, mergers and acquisitions, reorganizations and natural elimination in the operation of the market economy have rapidly increased the concentration of production. For example, there were more than 100 refractory material manufacturers in Japan in the 1950s. Over the past few decades, through mergers and acquisitions,reorganization, bankruptcy in the tide of market economy, trademark cancellation and other forms, so far, there are only more than 60 refractory companies. 2)The growth of total refractory materials has gradually weakened, and the added value of products has steadily increased. Under the premise that the demand for refractory materials is relatively stable, due to the continuous adjustment of the structure of refractory materials and the continuous improvement of product quality, the demand for refractory materials will be reduced, but the added value of products is still increasing steadily. Developed countries such as the United States, Japan and Europe have shown a positive development trend in which the growth rate of refractory sales revenue is higher than the growth rate of refractory output. In particular, the output of refractory materials in some countries is declining year by year, while sales revenue is increasing year by year. 3)The refractory industry is developing towards the establishment of large-scale enterprise groups. At present, through the mergers and acquisitions of hundreds of companies and their own development, the refractory industry has formed a number of large enterprise groups. Large-scale enterprise groups continue to increase the degree of intensification of production, and the industrial chain is gradually extended, and they use their strong economic and technical strength and brand advantages to seek greater profit margins.

Last year, the total output value of my country's energy-saving and environmental protection industry reached 4.5 trillion yuan, and proposed to strengthen energy-saving technological transformation, implement key pollution control projects, promote circular transformation of parks, speed up urban environmental infrastructure construction, and launch green building actions. The development of energy-saving and environmental protection industries can serve multiple purposes. It can not only help realize ecological civilization, promote long-term economic growth and sustainable growth, but also improve people's living environment and improve people's quality of life. Therefore, to develop energy conservation and environmental protection industries is to take the road of sustainable economic development. Energy-saving and environmentally friendly refractory materials are a new industry and an industry that integrates new technologies to adapt to the transformation of people's consumption structure. The development of energy-saving and environmentally friendly refractory materials industry is in line with the global trend. People need fresh air, clean water, and pollution-free food, and people need a good living environment. This is the fundamental reason and fundamental driving force for the development of energy-saving and environmentally friendly refractory materials industry to become a global trend. At the same time, it should be noted that the development of the energy-saving and environmentally friendly refractory industry itself also requires continuous investment in technical production factors. The result is not only to promote the development of the energy-saving and environmental protection industry itself, but also to accelerate the technological progress of the entire country. The market scale of energy-saving and environmentally friendly refractory materials industry is very large, and developed countries have occupied a major share of it for a long time. Major developed countries in the world have always attached great importance to the development of energy-saving and environmentally friendly refractory materials industry. China's vigorous development of the energy-saving and environmentally friendly refractory industry is in line with the global trend and plays an important role in optimizing the industrial structure and consumption structure. In response to the national call, Anyang Jinrong Metallurgical Materials Co.,Ltd. has obtained environmental management system certification. The Ccm Tundish Nozzles, Zirconia Tundish Nozzles, Well Block, Ladle Slide Gate Plates Refractories and other products designed and produced in a green environment are sold at home and abroad, and have won unanimous praise from customers.

Research And Markets recently released a report on the world`s refractory materials forecast in 2025. It is expected to reach US$27.4 billion in 2025,with a total growth rate of 3.4% from 2020 to 2025. The refractory market is experiencing moderate growth due to the growing applications,technological advancement and demand in the Asia-Pacific region and Europe.The increasing use of refractory materials and the rise of construction activities are driving the refractory market. Strict environment and government regulations are restricting factors in the refractory market. During the forecast period, the steel industry is expected to lead the refractory market The steel industry will continue to lead the refractory market, accounting for 60% of the total market share in 2019, due to the development of infrastructure and increased demand for consumer products such as automobiles. People's higher and higher requirements for quality of life, health and environment, as well as the demand for clean alternative manufacturing sources, have increased the demand for high-cost, high-performance refractory materials. The Asia-Pacific region is the largest refractory market The Asia-Pacific region will hold the largest share of the refractory market in 2020. Factors such as the rapid increase in the consumption of refractory materials in the steel, power generation cement and glass industries in countries such as China, Japan, India, South Korea and Australia have increased the demand for refractory materials in the Asia-Pacific region. Anyang Jinrong Metallurgical Materials Co.,Ltd. is also making contributions to refractories in the Asia-Pacific region. Since its inception over 28 years ago, she has grown from being a workshop to a true pioneer in China`s refractory industry. The company has sold its Tundish Nozzles, Slide Gate Plates, Well Block,etc. to more than 40 countries in the world. The management behind the company has always believed in staying ahead of the curve by investing in technology and people to deliver the best quality to the consumer. As such, some of China`s most powerful steel plants have been strengthened with Anyang Jinrong Refractory.

First, there was a slight increase in production. According to statistics from China Refractory Industry Association, the national output of refractories was 6.344 million tons, an increase of 1.09% year-on year. Second, industry confidence continues to recover. According to China`s refractory raw material price data, in April 2021, the bulk raw material price index was 181.91, a year-on-year increase of 10.46%. The prices of some refractory products have also increased significantly year-on-year, and some advantageous enterprises have full production tasks, and the downstream industry demand is generally relatively strong. Third,he price of refractory raw materials is relatively stable or rising The price of white corundum in Henan has been operating steadily, while the price of sintered corundum is relatively weak. Fourth, the price of refractory products is relatively stable or rising. According to the tracking statistics of China Refractory Industry Association,the overall price of refractory products in the first quarter increased significantly year-on-year. Fifth,import and export of main refractory products increased year on year According to customs statistics, from January to March, the total import and export trade of refractory raw materials nationwide was US$937 million, an increase of 16.46% over the same period of the previous year. The total export of refractory raw materials nationwide was 1.5901 million tons, a year-on-year increase of 10.40%. Among them, the export volume of refractory raw materials was 1,168,700 tons, a year-on-year increase of 7.76%; the export volume of refractory products was 421,400 tons, a year-on-year increase of 18.46%. The export volume of aluminum and silicon products increased by 7.01% year-on-year, and the average export price increased by 8.67%; the export volume of other refractory products increased by 12.90% year-on-year, and the average export price increased by 10.59%. Sixth,the conduction effect of rising raw material prices is beginning to appear. In the first quarter,due to the increase in the price of raw materials that began in the fourth quarter of last year,the pressure on the cost of refractory products has increased significantly, and the ex-factory price of refractory products has increased to a certain extent in the first quarter.

After the ISO 9001:2015 quality management, Anyang Jinrong again gained the ISO 14001:2015 Environmental Management System Certificate and ISO45001:2018 Occupational Health and Safety Management System Certificate. This indicates that Anyang Jinrong has achieved international connection in environmental protection management, and the soft power of comprehensive management has entered a new track. The company`s leaders attached great importance to this system review. During the review process, the company`s chairman Wang and general manager Liu have personally participated in the review several times. In the future environmental management and occupational health and safety management work, the company will continue to improve and improve in accordance with the requirements of the ISO14001 and ISO45001 standard to ensure the suitability, adequacy and effectiveness of the environmental management system, and provide a solid foundation for the company's high-quality development Assure.

In order to further standardize the company's business processes, effectively control risks, and form a standardized operation and standardized management model, the company proceeded from a strategic perspective and successfully passed the certification and audit of the China Quality Certification Center. The audit team inspected the quality policy, the completion of quality objectives and the control of the whole process through on-site inquiry, inspection and sampling methods. After strict audit, the audit experts unanimously passed our company`s certification and registration qualifications, and in 2021 The ISO9001:2015 quality management system certificate was officially issued again on April 6, 2016. The passing of the ISO9001 quality management system certification on the one hand proves the company's own strength, on the other hand, it is a spur to the company's future growth. In the future work, our company will continue to strictly implement the quality management system and rules and regulations, produce tundish refractory materials (Tundish Upper Nozzle,Tundish Lower Nozzle,Customized Tundish Nozzle,etc.) with higher standards ,further optimize and standardize various management systems, continuously improve the effectiveness of the system operation, continue to actively explore, and strive to upgrade the corporate management system to a new level. It has laid the foundation for the realization of comprehensive scientific management. Provide high-quality products and services for the security industry!

On June 30, our company held the 2021 semi-annual work meeting to thoroughly implement the spirit of the company`s semi-annual work meeting. It reviewed and summarized the work of struggle,analyzed the situation, clarified the ideas for development,re-struggled,re-mobilized, and re-deployed the work of the early struggle, calling on the company to strengthen its confidence,make a fuss, and strive to win the market battle and continue to improve the company Core personnel. The supervisor of the management department and above participated. At the meeting,Manager Wei of the Marketing Department made a work report on [Fighting the Market Resolutely and Going All Out to Complete the Annual Task and Objectives", analyzing the existing problems and the situation facing them, and comprehensively making arrangements for the work in the second half of the year. Since the beginning of this year,in the face of the severe market situation,the company has conscientiously implemented the company`s work requirements,actively advocated the service culture and innovation culture, and promoted the enterprise to strive for advanced positions. New progress has been made in various tasks. Finally,all departments are required to publicize and implement the spirit of the meeting to employees,and must implement and then implement,with a decisive attitude, strive to ensure the successful realization of the annual goals, and continue to promote the sustainable development of the company.

The Sizing Nozzle For Tundish is made of stabilized zirconia and imported natural oblique zircon after being stabilized by a special process, and then formed by high pressure molding and high temperature firing. The nozzle brand can be set according to the different steel-making environment and use requirements of users. The Sizing Nozzle has the characteristics of high refractoriness, good thermal shock performance, corrosion resistance, erosion resistance, small diameter expansion, and long service life. The Metering Nozzle and Sizing Nozzle For Tundish are Customized Tundish Nozzle which are mainly used for Continuous Casting of tundish billets,blooms,rectangular billets, and small slabs.

The Submerged Entry Nozzle is to lengthen the Tundish Nozzle and insert it into a certain depth below the surface of the molten steel to seal the pouring flow. The advantage of using a Submerged Entry Nozzle is that it isolates the jet stream from air and prevents the jet stream from affecting the molten. Splashes on the surface eliminate secondary oxidation. By selecting the Tundish Metering Nozzle shape,the flow state of the molten steel in the mold can be adjusted, the separation of inclusions can be promoted,and the quality of the steel can be improved. It can be said that the use of Submerged Entry Nozzle Continuous Casting inlet protection slag casting has bought epoch-making progress to the development of continuous casting technology. The shape of the Submerged Entry Nozzle mainly refers to the angle of the steel flow outlet,and there are generally four shapes, straight hole types,side holes up,side holes down and box types. Which one to choose depends on the pouring speed and the mold cross-section size.It is generally believed that the SEN protection slag technology is only suitable for large steel billets and slab continuous casting, but for blanks less than 150*150 mm,it is difficult to use this method,because the small cross-section,the size of the SEN is limited,and the drawing speed is fast,the liquid level fluctuation is large,and it is easy to cause slag rolling.The Ladle Shroud is located under the Ladle Collector Nozzle and is connected to the tundish. The Submerged Entry Nozzle is attached to the mold under the tundish. The shape of the Ladle Shroud For Sale is generally large,more than 1.2 meters, and the SEN is generally small,but the thin SEN in also very large.