Detaily Explanation of Sunrise Refractory Hot Sales Fused Zircon Corundum Brick TY-AZS36

First, please explore the naming rules of fused zirconium corundum bricks with Sunrise Refractory Factory. Fused zirconium alumina brick is also called AZS Fused Zirconium Alumina Brick, AZS Brick, Fused Cast AZS Brick, etc. The English abbreviation is AZS, which is arranged according to the three chemical components of the Al2O3-Zr02-Sio2 ternary phase diagram in order of their content. Al2O3 takes “A”, Zr02 takes “Z”, and Sio2 takes “S”, national standards use this abbreviation. For example, No. 33 fused zirconium alumina brick is abbreviated as AZS33 #, No. 36 fused cast zirconium alumina brick is abbreviated as AZS36 #, and No. 41 fused cast zirconium alumina brick is abbreviated as AZS41 #. Among them, 33, 36, and 41 are named according to the content of alumina (Al2O3). For example, fused zircon corundum brick AZS36 # refers to fused zircon corundum brick with alumina content of 36%, and so on.

 

Fused zirconia corundum brick is a white solid formed by pure alumina powder and zircon sand containing 65% of zirconia and 34% of silica. The structure consists of a eutectoid of corundum and zirconite and a glass phase. From a phase perspective, it is a eutectoid of a corundum phase and a zirconite phase. The glass phase is filled between their crystals.

 

The typical crystal phase composition of AZS36 # and AZS33 # are all three of corundum, zirconia and glass phases. Except that it has the same eutectic body as AZS33 # Fused Zircon Corundum Brick, 36 # AZS Brick has more chain-locked zirconia crystals and lower glass phase content, so the corrosion resistance of 36 # Fused Zirconia Corundum Brick The property is further enhanced, so it is suitable for areas where the flow rate of glass liquid is fast or the temperature is high.

 

AZS36 is an excellent product in the AZS series of molten cast products. It has high resistance to liquid glass erosion and low pollution. It is usually used in key parts such as the pool wall near the hot spot of the glass melting furnace.

Next, I will introduce the melting technical requirements of Sunrise Refractory Group's fused bricks:

(1) The long arc method melting process is adopted, and the secondary voltage is controlled between 320-380 volts. In the early stage of melting, high-voltage melting is used. The secondary voltage is 380 volts. The secondary voltage during the refining period is controlled at 320 volts. The arc length must reach 50-60 mm.
 

(2) Current selection: In the initial stage of melting, the current should be controlled at 3500-4000 amps, and pay attention to the change of the three-phase electrode current at any time to try to maintain balance. The current can be increased during the refining process. Strong current refining is used and the current is controlled at 4500 Ann.
 

(3) Melting time: The melting time of each furnace is about 150 minutes, of which melting is 120 minutes and refining is about 30 minutes.
 

(4) Oxygen blowing: The oxygen is blown in two steps in each furnace. The oxygen pressure is 1.4-1.6 MPa. When blowing oxygen, the oxygen lance should be inserted into 1/2 of the depth of the liquid and shake slowly. It is fully oxidized.
 

(5) The casting temperature is 1850-1950 ° C, and it must be above 1950 ° C in winter.

 

Sunrise Refractory Factory has many years of experience in the production and sales of refractory materials. If you happen to need refractory bricks, I just happen to be professional. Sunrise Refractory welcomes friends from all over the world to visit the factory, put forward valuable opinions and discuss cooperation.