EAF working layer refractory materials

EAF is widely used for nowever days steel making industries. For this?furnace, the key point effecting service life is working layer. Working layer would touch with melton steel directly, where is of high thermal load, heavy chemical mechanical erosion. So high quality refractory materials should be adapted in working layer.

Regular lining method for EAF working layer is namely sintering, vibrating and brick-construction. For brick-construction method, asphalt binder magnesia brick is widely used. For sintering and vibrating method, magnesia sand with tar as bonding agent are normally used. In nowever days, brick-construction and sintering method are gradually eliminated because of low service life and less applicability. For high power EAF, dry magnesia vibration mix is widely used. After powerful ramming and the density requirement, the mix can be sintered into overall under certain temperature, and a good service life can appear. In regular condition, service life of vibration mix can reach 300 heats. After one time hot-repairing, the service life can be as long as 500-600 heats. With this method, furnace stopping time would decrease, and steel unit cost would also low down by a large degree, then the steel plant profit would increase a lot.

Article Source:dry magnesia vibration mix
Company name:Henan Xinmi Changxing Refractory Materials Co.,Ltd
Email: sales1@chinafirebrick.com
Website:http://www.chinafirebrick.com/

Functions of mono-block stopper

Mono-block stopper is mainly used for the tundish, which performs a switching function. The steel flow is controlled by the position of the head of mono-block stopper to tundish.

Meantime, the argon hole can be blown through the argon hole of the integral plug to prevent the nozzle from being clogged. There are several advantages by using the mono-block stopper:

1. Safer.
2. Reduce the nozzle blockage accident.
3. After the argon is blown by the stopper rod, the total amount of inclusions in the slab is greatly reduced, and the quality of the slab is improved.
4. As the accident rate decreases, the output of continuous casting machines is relatively increased.

Article Source:Mono-block stopper
Company name:Henan Xinmi Changxing Refractory Materials Co.,Ltd
Email: sales1@chinafirebrick.com
Website:http://www.chinafirebrick.com/