Criteria for design of intermediate frequency furnace lining material components

Intermediate frequency furnace lining materials Acidic, neutral and basic refractory materials are widely used in coreless intermediate frequency electric furnaces. steel, high manganese steel.

The acid furnace lining material is made of high-purity microcrystalline quartz sand and powder, and the composite high-temperature sintering agent and the proprietary mineralizer are mixed to form the basic furnace lining material. The fused magnesia is mainly used, and some fused corundum is added. , The magnesia medium frequency electric furnace refractory with pre-mixed binder adopts a proprietary particle size design, which can be directly put into use by users. The neutral furnace lining material is low-electric fused corundum-based aluminum-magnesium spinel dry vibration refractory material, and high-purity refractory is selected. The raw material and the proprietary particle size distribution design enable it to obtain a fine and uniform unshaped lining. The material has excellent thermal shock stability and high temperature strength, and has a loose layer during normal use.

The service life of different parts of the intermediate frequency furnace lining is different. It is the statistical value of the life of different parts of the brick structure lining of the aluminum melting furnace in a factory. The design principle of the lining parts is to make the vulnerable parts easy to replace and repair. The specific conditions are different, 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 even reach the whole furnace During the overhaul period, there are still no shortages available.

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. Orifice components should be designed for easy maintenance and replacement without affecting the integrity of the rest of the liner.