An aluminum
melting furnace capable of increasing service life and heat efficiency comprises a shell body and a lining layer covered on the inner wall of the shell body. The furnace is characterized in that work
layers in the lining layer, namely the work
layers of the furnace bottom, the furnace wall and the furnace top, are integrally cast from castable
refractory and constructed; wherein, the furnace top is in a flattopping structure as well as the integral cast structure with hanging anchorage bricks, the furnace wall is in a
composite structure belonging to a straight vertical
surface structure. Being fully cast, the lining of the aluminum
melting furnace has no seam,
smooth surface, high integral strength, good
air tightness and stable structure in use, and can greatly reduce
radiation loss and improve the heat efficiency; with nonoxides used in the lining
casting material, the material does not shrink, crack, aluminize, uneasily adhere with
slag and is not eroded by aluminum
alloy melt with high
thermal shock stability in the state of
smelting operation. Compared with the service life of a traditional
brick structure, the service life is improved more than 3 times.