Our second AOD lining has now come out of service with a performance of 56 heats. Our first trial lining did 52 heats. These are two very good performances and the customer is quite happy. The competition’s average performance is 38-43 and 43-48.
What also makes these performances impressive is the fact that our floor brick (which is where the tuyeres are located in this bottom blown AOD) were 100mm shorter than the others. Therefore our tuyere brick (while the same height as the others) were not protected as well due to the shorter surrounding floor brick. With longer floor to protect the tuyeres our brick should perform even better performance compared to our first two linings.