Fused cast alumina block

Fused cast Alumina block is formed by the compact structure of alpha alumina and beta alumina crystals in a most desired proportion which is approximately 50% and 50% respectively,where intertwined crystals of both materials result in a very dense structure 

Fused cast alumina block accroding the alpha and beta crystals diffenence, include three type whcih name fused cast alumian alpha block, fused cast alumina beta block, fused cast alumina alpha-bate block. 

Properties and applications of fused cast alumina bricks

Fused cast alumina block has dense structure, strong corrosion and resistance to glass liquid erosion, very suitable for glass tank paving block and front furnace channel block, is also widely used in tank working end, bottom, feed channel, superstructure, throat and so on.

A method to improve the forging efficiency of fused cast alumina bricks

(1) Choose high temperature calcined α-A and γ-A industrial alumina powder as the main raw material;

(2) the chemical composition of the mixture ratio;

(3) Using α-β alumina brick as electric furnace lining brick;

(4) electric furnace process: 1250KVA transformer is used, and the maximum secondary voltage is 260V; The control system adopts load and no load automatic pressure regulation; The refining time is 40-50 minutes;

(5) Casting system: every 3 hours cast 500kg for one furnace, casting temperature control above 1900℃;

(6) The annealing temperature of cast products in the kiln is 1350-1450℃, and the temperature of exit is below 80℃. The annealing cycle is 6-7 days.