The effect and principle of batching use of intermediate frequency furnace lining materials

The batching includes two aspects: charge weight and batching composition. Hongda, who has many years of experience in intermediate frequency furnace charge, takes the oxidation method as an example to illustrate that if the carbon content is too high, it will increase the amount of ore or extend the oxygen use time.

Ingredients: Prohibition of ingredients will easily lead to improper control of chemical composition during the exercise process or insufficient casting of castings, and may also be excessive and increase consumption. If the chemical composition of the charge is prohibited, it will bring difficulties to the exercise operation, and in severe cases, it will make it impossible to exercise. It is generally carried out according to the steel grades, equipment conditions, existing raw materials and different training methods.

The batching includes two aspects: charge weight and batching composition. Hongda, who has many years of experience in intermediate frequency furnace charge, takes the oxidation method as an example to illustrate that if the carbon content is too high, it will increase the amount of ore or extend the oxygen use time; the carbon content If it is too low, it is bound to increase carbon after melting; if S and P in the charge are too high, it will bring great difficulties to the operation before the furnace, not only prolong the training time, but also severely erode the furnace lining, and sometimes even terminate the training. In the above situation, it is important to grasp the chemical composition of steel materials and ferroalloys before batching.

The service life of different parts of the furnace lining is different. It is the statistical value of the life of different parts of the furnace lining of all brick structures of a melting aluminum furnace in a factory. The principle of lining parts planning is to make the vulnerable parts easy to replace and repair. Although the specific conditions of each manufacturer They are not the same, but the feeding port, furnace bottom, flow port and other parts generally have a short life due to frequent operation and impact. And the furnace wall, furnace top and other parts on the liquid level line of the molten pool have even reached the overhaul period of the whole furnace. is still available in good condition.

The flow orifice of the aluminum melting furnace is located at the junction of the furnace wall and the furnace bottom, and it is subject to frequent poking operations, especially when the furnace condition is abnormal and the treatment of the bottom of the furnace is slagging, so that the life of the orifice brick is much longer than that of other parts of the furnace lining. Short. The planning principle of the orifice parts should be simple maintenance and replacement without affecting the integrity of other linings.