[China Aluminum Industry Net] Application of Castables in Aluminum Melting Furnaces The overall cast metallurgical furnace technology is a kind of metallurgical furnace masonry method in which refractory castables are cast at one time in the field using refractory castables. According to information, the characteristics of this technology are that its structural integrity is good, there are no bricks, and the overall strength is high, so the furnace life is longer. This technique was tried on some furnaces in the domestic non-ferrous metallurgy industry. The operating temperature of the circular furnace is as high as 1200°C and the high operating temperature of the stationary furnace is as high as 1000°C.
The furnace uses the top of the furnace to remove the material, the small furnace has three furnace doors for artificial slag, and the large furnace has two furnace doors for mechanical slag removal. The raw materials are aluminum ingots, waste cast rods, waste profiles and cast rolled aluminum coils. Each static furnace also has two furnace doors for slag removal and refining operations. In the past, the furnace body was made of refractory bricks, and some parts were easily damaged, which affected the life and efficiency of the furnace. The technical transformation of the overall life of the furnace body is performed by casting the furnace body partially with a refractory castable on the aluminum melting furnace.
In addition to the bottom of the furnace round furnace brick, the furnace wall, slag slag, furnace door frame, furnace door, burner brick, etc. all changed to cast refractory castables as a whole. All have been replaced with castables as a whole. All furnace lids, including large furnace lids and small furnace lids, have also been replaced with castables. The overall pouring furnace cover has an average service life of 3-5 years.
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