Production process

Production process

Professional production of corundum mullite bricks

Oxidation melting casting

Casting method

Physical and chemical indexes of ramming material

Physical and chemical indexes of ramming material

The wrong quality ramming material is a kind of unshaped refractory material, which is composed of fused corundum aggregate particles and a small amount of additives. The product is easy to use, room temperature hardening, high temperature compressive strength, thermal expansion and shrinkage of small, strong resistance to solution erosion and so on. It is the most ideal refractory material used in the sealing layer of the glass melting furnace pool.

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Ordinary casting

The bricks cast by this process have normal shrinkage holes and are often used in the upper structure of the furnace, and can also be used in the part that contacts the glass.

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Densiform pouring

Densification casting is also called strengthening casting, which increases the height of the casting mouth so that the casting can get more dense parts. The brick is often used in the wall of the melting furnace.

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Inclined casting

The shrinkage cavity of the brick cast by this process is concentrated at one end of the brick, and the other end is dense, which is mostly used for the pool wall.

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Quasi-shrinkage-free casting

Quasi-shrinkage-free casting is vertical casting, and its casting size is larger than the required size. The shrinkage cavity is mainly concentrated at the upper end. After annealing, the shrinkage cavity part at the upper end is cut off, and the rest is quasi-shrinkage-free brick of the required size. Therefore, the lower part of the brick is very dense and is mostly used for pool wall.

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Shrinkage-free casting

Shrinkage-free casting is vertical casting, the casting size is larger than the required size, the shrinkage is concentrated on the upper end, the shrinkage part of the upper end is cut off after annealing, and the rest is shrinkage-free brick of the required size. Therefore, the brick is very dense and is mostly used for pool wall and liquid hole.

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Oxidation melting casting AZS41

AZS-41# Zirconium corundum brick contains more uniformly distributed aluminum oxide crystals, and its erosion resistance is the best in the zirconium corundum series. Therefore, it is selected for the key parts of the glass furnace so that the life of these parts can be balanced with the life of other parts.

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Oxidation melting casting AZS36

In addition to having the same cocrystallization as AZS-33# zirconium corundum brick, AZS-36# zirconium corundum brick is suitable for areas with faster glass flow rate and higher temperature, such as melting pool wall brick, paving brick, filler brick, etc., due to the increase of more chain-like zirconia crystals and the decrease of glass phase content, so the erosion resistance of AZS-36# zirconium corundum brick is further enhanced and the contamination to glass liquid is further reduced.

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Oxidation melting casting AZS33

The dense microstructure of AZS-33# zirconium corundum brick makes the brick resistant to glass erosion, is not easy to produce stones or other defects, and the possibility of producing small bubbles is also very low. Therefore, AZS-33# zirconium corundum brick is the most widely used product in glass furnace.

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