Speaker
Description
The process of charging of the furnaces in R.Ž Topilnica j.s.c-Skopje
M.Sc.DarkoKazankov1 B.Sc. Emil Kazankov2
1Agency for Real Estate Cadastre Skopje, Macedonia, 2R.Ž Topilnica j.s.c-Skopje Macedonia
kazankov.darko@gmail.com; em.kazankov@gmail.com
Furnace charging is a continuous process during the operation of the furnaces. The level of the charge in the bunkers of the electric furnaces in R.Ž. Topilnica j.s.c-Skopje is kept at a minimum of 1/2. Only in special cases is a lower level of the charge in the bunkers allowed, i.e. 1/3 (during the process of technological adjustments of the furnace, before a planned shutdown of the furnace, etc.).Care of the furnace should always be taken about the level of the charge being placed, even when there is a difficult supply, and the furnace power should be reduced in a timely manner. The furnace must not operate when the bunkers are in the smoking process. In such cases, the furnace is turned off and it stands still until it is satisfied with the required batch. The flow of the charge through the charge pipes should be continuous, i.e. there should be no clogged charge pipes, which would disrupt uniform charging, which in turn could lead to other consequences. In the event of a clogged central charge pipe or two or more adjacent auxiliary charge pipes, the furnace is immediately shut down and the necessary measures are taken to unclog the pipes. Also, prolonged operation with one of the auxiliary charge pipes plugged must not be allowed. During the electrode measurement process, the charge supply to the furnace is interrupted by closing the shutters for a period of 2 hours before the furnace piercing process begins. Until the measurement process is performed, the furnace operates at a reduced power of 15 MW. After the measurement is completed, the furnace is not turned on until its interior has been checked (for water leaks), and only then is the furnace charged. Clearly, before the charging process is carried out, a coke correction is placed for better contact. Only after the charging process is completed, the furnace is turned on again, whereby the load on it should be gradual and the normal power of the furnace should be achieved only after 1 hour. In the event that the charge level in the furnace is very low during the electrode measurement, the furnace must not be charged all at once, but in 2 times, with the time interval between one charge and the other being at least 1 hour. During this interval, the furnace operates at a reduced power of 15-18 MW.
Keywords: Pipes, electric furnaces, bunkers, coke, water leak, reduced power
References:
1. E.Kazankov (Internal Rulebook: “Technological Regulations in R.Ž Topilnica j.s.c-Skopje”, 1973)
2. E.Kazankov (Broschure: “Description of the technical system in Ferro alloys plant R.Ž Topilnica j.s.c-Skopje” for production of FeMnC and SiMn, 1999)
