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High dense zircon block consists of two kinds of bricks- HDZ-65 and HDZ-68. Characterized by high bulk density, low apparent porosity, mechanical strength, excellent stability of thermal shocking and resistance to corrosion of glass liquid under load, it is mainly used for soda-lime glass kiln, channel blocks as well as sidewall of glass fiber kilns and floating glass tanks.
Applications
Zirconia brick is versatile in the following industries:
-- ladle lining for metallurgical industry.
-- suitable for transition region between up roof silica brick and fusion zirconia-corundum brick or fusion zirconia-mullite brick.
-- used in soda-lime glass kiln as neutral brick, skew brick.
-- suitable in upper area of flame space or frequent thermal shock region as well as in lining of alkali-free or low-alkali glass, sodium-calcium glass, boron-silicate glass, ceramic glass, lead glass and other technical glass melting furnace.
-- widely used in glass contact portion of alkali free or low-alkali glass melting furnace.
-- suitable for paving and sub paving, channel blocks, sidewall of meter of glass fiber furnace and floating glass tanks.
-- ideal for glass tank, such as paving part and secondary layer of paving bottom, back lining ,wall and bottom of fore hearth, flowing spout and spinning portion and melter, etc.
-- suitable for transition region between silica brick and magnesia brick, areas of crown, burner, thermal couple, peep hole, and secondary layer of melter bottom and its back lining, etc.
| Item | ZS-68 |
| ZrO2 （%） | ≥68 |
| SiO2 （%） | ≤30 |
| Fe2O3（%） | ≤0.3 |
| Apparent Porosity （%） | ≤8 |
| Bulk Density (g/cm3) | ≥4.15 |
| Cold Crushing Strength （Mpa） | ≥200 |
| 0.2Mpa Refractoriness Under Load T0.6 ℃ | ≥1680 |
| Pyrometric Cone Equivalent S.C. SK | 40 |
| Reversible Thermal Expansion 1000℃ % | 0.5 |