fused cast zirconia corundum brick

Product Details

Product Description

Product Description
Henan Yuhua Fused Cast Refractory Co., Ltd
Fused zirconia corundum brick is made of pure alumina powder, zirconia sand, desilicated zirconium as the main raw materials in the electric melting furnace fully melted at high temperature injected into the model, heat preservation and annealing and cooling and the formation of the solid, its crystalline phase structure consists of corundum phase with zirconium plagioclase phase and glass phase. Crystallographically speaking, it is the eutectic of corundum phase and zirconium plagioclase phase, and the glass phase fills in between their crystallization.
Casting method:
The casting methods of electrofused zirconia corundum bricks are normal casting, tilted casting, shrinkage-free casting and .
PT—Ordinary Casting
The usual casting method, the shrinkage hole of the product is located in the lower part of the casting mouth, mostly used in the upper part of the melting pool flame space parts, such as not in contact with the glass solution or erosion is not serious parts.
QX—Inclined Casting
A tilted casting method is used to create a slant in the mold, and the riser is placed at the other end for casting. The shrinkage hole of the product is placed at the lower end, which is suitable for the products with the length >60mm, mainly used for pool wall bricks.
WS—Non Shrinkage Casting
The non-shrinkage products with the shrinkage part of the casting bricks removed, mainly used in liquid holes, kiln cans, corners of the pool wall, pavement and other seriously eroded parts.
ZWS—Quasi Non Shrinkage Casting
Similar to non-shrinkage casting, basically removed the shrinkage part of the cast brick, mainly used for pool wall bricks.
Attribute Characteristics:
AZS-33# product is particularly superior in preventing contamination of the glass liquid, and its tendency to cause stones, bubbles and precipitation of basic glass phases in the glass is minimal. It is suitable for use in the superstructure of melting tanks, flame spaces, furnace swans, pool wall tiles and paving tiles in working pools, and in forehearth areas.
Physical and chemical indicators:

Item		Index
		AZS33-Y
Chemical Composition%	Al₂O₃	Residual
	ZrO₂	≥33.00
	SiO₂	≤15.00
	Na₂O	≤1.45
	(Fe₂O₃+TiO₂+CaO+MgO+Na₂O+K₂O)	≤2.00
	(Fe₂O₃+TiO₂)	≤0.25
Bulk Density		≥3.8g/cm³
Apparentporosity		≤1.3%
Static Resistance To Glassliquid Erosion Speed(Ordinary Sodium Calcium Glass,1500℃x36h)		≤1.50mm/24h
Initial Crystallization Temperature Of Glass Phase		≥1400℃
Bubble Precipitation Rate (Ordinary Sodium Calciumglass,1300℃x10h)		≤2.0%
Glass Phase Exudation Amount(1500℃x4h）		≤2.0%
Bulk Density	PT、QX	>3450
	ZWS	>3700
	WS	>3750

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