A tundish is an essential component of the continuous casting system in steelmaking. Located between the ladle and the casting molds, the tundish feeds molten steel to the molds at a regulated rate. Due to the temperature extremes involved, tundish refractory linings are designed to withstand thermal shock, prevent thermal loss, prevent oxidation, and resist erosion and corrosion &#; all while not contaminating the liquid steel with unwanted impurities. BassTech is a strategic supplier of performance enhancing additives for tundish refractory linings, including sodium metasilicate 9 MOL and our specialty phosphates.
If you are looking for more details, kindly visit SINOMETAL.
Here are five interesting facts about tundish refractory linings:
On top of being lined permanently with either refractory bricks or monolithics, a tundish also has a disposable lining. The disposable lining acts as a thermal and chemical barrier that protects the permanent liner while maintaining the temperature of the molten metal, and it needs to be replaced after one or more heats of molten steel. This refractory lining, which is sprayed on between heat cycles, contains our unique phosphate binder/deflocculant system that cures with either the residual heat or ambient temperature after cold starts.
Phosphates help with strength development, dispersing other ingredients through a mix, and allowing control of set/working times. Our phosphates are also engineered to enhance flowability, prevent oxidation, prevent out-gassing and improve strength development at elevated temperatures.
Sodium Metasilicate 9 MOL is extremely stable at ambient temperature and begins releasing significant amounts of water at about 80°C, which makes it a useful ingredient as a quick binder in single component systems at relatively low temperatures. It has shown excellent success in single component blends for low temperature strength development. In addition to strength development, the water kicks off the reactions for the other additives in the refractory mix.
Aside from extending the life of the permanent tundish lining, the disposable lining allows easier removal of the tundish skull. After being removed in a process called &#;deskulling,&#; the skull can usually be cycled back into the continuous casting process. Our phosphate additives prevent oxidation from the skull without adding detrimental impurities back into the composition.
Billets, blooms, and slabs are considered semi-finished products. These are the materials used for most forms of steel work and may eventually become rails, pipes, wire, rods, or tubes.
Are you a manufacturer of tundish refractory linings? We are a strategic supplier of performance enhancing additives for tundish refractory linings. To learn more about how BassTech International can assist you, feel free to reach out to one of our tundish refractory experts.
Section 1 Basic knowledge of refractory materials
1. What is the definition of refractory material?
Refractory materials refer to inorganic non-metallic materials with a refractoriness not lower than °C.
2. What basic properties must a refractory material have?
(1) Refractoriness
(2) High temperature volume stability
(3) Rapid cooling and heat resistance
3. Application of refractory materials in electric furnace steelmaking plants?
(1) Repair materials for electric furnace lining, furnace cover, furnace bottom, furnace slope and slag line.
(2) Refining ladle lining, ladle cover, sliding nozzle, breathable brick system.
(3) Continuous casting tundish lining, cover, long nozzle, integral stopper, submerged nozzle.
(4) Funnel bricks for mold casting, middle injection pipes, center bricks, soup bricks, tail bricks, mold bottom bricks.
4. According to different refractoriness, how many types of refractory materials can be divided?
(1) Ordinary refractory materials, with a refractoriness of -°C;
(2) High-grade refractory materials, with a refractoriness of -°C;
(3) Special-grade refractory materials, refractoriness > °C;
For more tundish refractoriesinformation, please contact us. We will provide professional answers.
5. According to the different properties of chemical mineral composition, how many types can the refractoriness be divided into?
(1) Acidic refractory materials, such as silica bricks;
(2) Basic refractory materials, such as magnesia bricks, dolomite bricks, magnesia carbon bricks;
(3) Neutral refractory materials, such as high alumina bricks and carbon bricks.
6. How many types of refractory materials can be divided according to the size?
(1) Standard refractory bricks, with dimensions &#; 4;
(2) Ordinary refractory bricks, with dimensions &#; 6;
(3) Special-shaped refractory bricks, with dimensions < 10, with holes, grooves, and corners;
(4 ) Special-type refractory bricks, with dimensions > 10, with multiple holes, grooves, and corners.
7. How many types can refractory materials be classified according to their shape?
(1) Refractory bricks - have a certain shape.
(2) Indeterminate refractory materials - loose solid, refractory materials that need to be constructed according to the desired shape.
(3) Refractory mortar - refractory material for bricklaying and caulking.
8. What is the purpose of learning the basic knowledge of refractory?
(1) Master basic skills and use refractory materials scientifically and rationally.
(2) Grasp the use characteristics to prevent accidents such as furnace piercing, ladle piercing, steel leakage, and steel running.
(3) Grasp the rules of use, continuously improve the service life of furnace lining and lining, reduce steelmaking production costs, reduce labor intensity, and improve economic benefits.
Want to know more about the refractories for steelmaking plant?Follow me and contact me.
me:
Telegram me: