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Shaped Refractories

In glass melting furnace, some special-shaped refractories are also frequently used, such as lip stone in float glass furnace, and feeder channel block, spout, tube, orifice ring, plunger, stirrer etc. in container glass production line.

Other name: Lip Stone, Feeder Channel Block, Canal Brick, Tube, Spout, Orifice Ring

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Certification: ISO 9001-14001

Minimum Order Quantity: 2 MT

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Lip Stone

Lip stone is a sintered fire clay brick (chamotte brick), or fused cast alumina block used in the molding part of float glass production line and directly contacts the glass melt, which has a direct influence on the yield of the glass product. This requires lip stone to have good dimensional tolerances, good thermal stability and alkali resistance. According to the actual use, our lip stone has the advantages of short foaming time, long service life and high yield of glass products.


Feeder Channel Block

Feeder Channel Block, also known as Canal Brick in some regions, operates at the end of  hot zone in glass production line, it is the lower part of forehearth. The glass melt flows through it to the forming machine and is eventually shaped into glass bottles, glass jars, glass tubes, glass insulators, etc. It can be manufactured based various materials, such as fused cast alumina, fused cast AZS, sintered alumina, sintered mullite or sillimanite.


Refractory Expendable

Refractory Expendable refers to a series of shaped refractories used in gob forming zone at the end of production line for shaped glass, including spout, tube, orifice ring, plunger, stirrer, forehearth cover, burner etc. They can be manufactured based various processes, such as fused cast AZS, sintered  zircon-mullite, sintered sillimanite, fused silica etc.


Lip stone physical and chemical

Chemical CompositionAlO min%58
SiO MAX%38.0
FeO MAX%1.0
NaO+KO MAX%1.0
Physical PropertiesRefractoriness 1790
Bulk Density g/cm³ 2.3
Apparent   porosity MAX % 18
Cold Rupture Strength Mpa 12
Cold Crushing Strength Mpa 50
Permanent   Linear Change On Reheating(%)1100 X2h±0.1
Thermal   Shock Resistance(1000   Water-quenching cycle) 25




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