Aiming at the problem of excessive heat loss of molten steel in steel-making production, high temperature nano insulation plate is used in ladle and tun-dish system to improve the heat storage of refractory lining. Under the premise of not affecting the service life of refractory materials, the shell temperature of ladle and tun-dish is reduced by about 30℃, which helps the steel plant energy saving and emission reduction
The temperature control of molten steel has a great impact on the cost of steel-making, and the thermal insulation effect directly affects the temperature of molten steel. Generally, the thermal insulation measures are the use of high density ceramic fiber board and reflective insulation board. Generally, the thickness of high-density ceramic fiber board is 25-30mm, which occupies the space of permanent lining castable, and is easy to be compressed to cause shrinkage cracks of permanent lining castable, which affects the service life of ladle. Reflection nano plate is a kind of nano oxide powder insulation material, the thickness of the use is generally 25-30 mm, also occupies a large space of permanent lining castable, but also has the hidden danger of shrinkage cracks in permanent lining castable.
In order to improve the thermal insulation effect of ladle, the steel mill uses 15mm reflective nanoplate on ladle. In practical application, the thermal insulation effect is not ideal because the thermal insulation plate of reflective nanoplate is too thin, and the temperature of steel water is still falling fast. After many experiments, the technology research and development team of steel mill and Zerothermo research and development team successfully applied the Zerothermo high temperature nano microporous on the ladle, the thickness of which is 15mm. Through production practice, good energy-saving effect has been achieved. The temperature of the ladle shell has decreased by about 45℃, and the temperature drop rate of molten steel has decreased by 0.35℃/min compared with the original. There is no shrinkage and cracking phenomenon of castable, which does not affect the service life of permanent castable.
The ladle using Zerothermo high temperature nano microporous can effectively reduce the outer wall temperature of the ladle, and Zerothermo high temperature nano microporous has high strength, and has better comprehensive thermal insulation performance compared with the nano-reflective plate. The tundish uses Zerothermo high temperature nano microporous to reduce the temperature of the cladding, improve the working environment, reduce the deformation of the shell, and the average temperature of the shell decreases by about 60℃. The thickness of Zerothermo high temperature nano microporous is thin, does not occupy the space of refractory lining of steel making equipment, does not affect the normal service life of refractory lining, ladle permanent lining castable does not appear cracking shrinkage phenomenon and envelope red envelope accident
Due to the special structure of the nanoporous raw material powder, the heat conduction of the plate only can be carried out through the tiny particle surface contact, which greatly increases the conduction path and decreases the heat conduction. At the same time, the movement of air molecules in the particle gap decreases significantly, and hardly provides heat convection heat transfer. The addition of shading agent in the material can also realize the barrier of thermal radiation.
High temperature nano-porous insulation materials are widely used for high temperature insulation in a variety of scenarios which need to use high temperature kiln, reactor or high temperature environment. , such as power stations, cement plants, glass plants, metal smelting, petrochemical, new material manufacturing and so on. Zerothermo high temperature nanoporous insulation materials can easily achieve heat preservation and insulation, reduce the heat loss of high temperature reaction, save energy, also can help achieve energy conservation and emission reduction in many important industrial production fields.
Zerothermo focus on vacuum technology for more than 20 years, our main products : vacuum insulation panels based on fumed silica core material for vaccine, medical, cold chain logistics, freezer, integrated vacuum insulation and decoration panel, vacuum glass, vacuum insulated doors and windows. If you want to learn more information about Zerothermo vacuum insulation panels, please feel free to contact us, also you are welcome to visit to our factory.
Sale Manager: Mike Xu
Phone :+86 13378245612/13880795380
E-mail:mike@zerothermo.com
Website:https://www.zerothermovip.com
Post time: Dec-29-2022
