Fused Cast AZS 36 Blocks

Fused cast AZS 36# blocks made from a combination of alumina (Al2O3), zirconia (ZrO2), and silica (SiO2) are the better quality grade of fused cast refractory blocks used in the glass furnace. Fused Cast AZS 36# blocks denotes the percentage of ZrO2≥35.5%. Different Companies may have different indication codes for this quality grade. For example, SEPRO uses ER 1685 for AZS 36#, and REFEL uses 1334 for AZS 36#. With the medium zirconium oxide content, Fused Cast AZS 36# Refractory block is designed to provide better resistance to glass corrosion than AZS 33#. Its chemical and physical properties make it be used in more aggressive area of the glass furnace.

Classification and Properties

Fused cast AZS 36# Refractory blocks are normally classified into two quality grades:

AZS 36#ZWS (End Cut Casting) and AZS 36#WS (Void Free)
Fused cast AZS 36# blocks have better resistance to high temperatures and corrosive environments in the glass furnace operation. 

Fused Cast AZS 33# Refractory Block Chemical and Physical Datasheet

Fused Cast AZS 36# Refractory Block Chemical and Physical Datasheet

Item		AZS36
Chemical Composition%	Al2O3	≥49.00
	ZrO2	≥35.50
	SiO2	≤13.50
	Na2O+K2O	≤1.35
Volume density g/cm3		≥3.85
Apparent Porosity %		≤1.0
Cold Crushing Strength  Mpa		≥200
Exudation Temperature of Glass Phase		≥1400
Bubble Separation Ratio（1300℃×10h）		≤1.0
Anti-corrosion rate of glass liquid 1500℃×36h （mm/24h）%		≤1.3
Bulk density （g/cm3）	PT(RN RC N)	≥3.55
	ZWS(RR EVF EC ENC)	≥3.80
	QX(RO)	≥3.75
	WS( RT VF EPIC FVP DCL)	≥3.85

Applications

Because of fused cast AZS 36# blocks’ better performance to withstand the more corrosive environments  in glass furnace operation, they are normally used in some crucial positions of glass furnace, like melting tank sidewall,Barrier Wall, Throat Covers and etc. 

Sidewalls

Fused cast AZS 36 blocks have excellent resistance to the erosion of glass liquids. Fused cast AZS 36 blocks also have a relatively low glass phase content, which helps to minimize the contamination of glass liquids during use. It also has good thermal stability and mechanical strength, ensuring a long service life for the furnace.

Fused cast AZS 36 blocks are the ideal choice for the glass furnace part due to their high resistance to glass liquid erosion, good thermal stability, and mechanical strength, as well as their ability to adapt to the specific working environment of furnace canopies.These performance characteristics enable fused cast AZS 36 blocks to maintain stability and durability in harsh working environments, providing a strong guarantee for the efficient operation of glass furnaces.

Henan SNR Refractory Co., Ltd（SNR） has been committed to the development of high-quality fused cast AZS blocks.If you have any needs, please contact us.