Fused cast AZS brick 33# for glass furnace

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The compact microstructure of Fused cast AZS brick 33#,makes it to have very good melting glass resisting, Which seldom produces stone or other faults, and has little possibility to produce bubbles. So, Fused cast AZS brick 33# is the most widely used product in glass furnace.

	Code	Name		Characteristic and Use
	PT	Normal Cavity		It is the accustomed cast method and cavities are located under the mouth of casting. It is used for top of thawy pool, etc. corrasive non- severity part.
	QX	Oriented Cavity		Using tilt cast method, and the cavities of goods are located under the goods part. Being used for sidewall.
	WS	Cavity Free		It is resect cavities part of molten brick and the main using is hole of stream liquid kiln and sidewalls corner, etc corrasive severity part.
	ZWS	Reduced Cavity		It is similarly void free cast and basically resect cavities part. Being used for sidewalls brick.
Chemical Composition( % )					AZS #33
ZrO₂					≥ 32.5
SiO₂					≤ 15.5
Al₂O₃					Remains
Na₂O					≤ 1.4
Fe₂O₃+ TiO₂					≤ 0.25
Volume density (hardest part)					≥ 3.80
Cold crushing strength (MPa)					≥ 300
Exudation Temp. of glass phase （℃）					≥ 1400
Refractoriness under load of beginning (0.2MPa)					1700
Corrosion Resistance to glass melt 1300℃x10h(mm/24h)					1.5
Bulk density ( g/cm³)			PT		≥ 3.42
			QX		≥ 3.45
			ZWS		≥ 3.65
			WS		≥ 3.70
Baddeleyite monocrystal					32
Glass phase					20
Corundum					47