DOUBLE EGRET is the specialized manufacturer and exporter of refractory castable in north of China with more than 10 years history.  

DOUBLE EGRET refractory castable is unshaped refractory with compounded of good quality lightweight aggregate, powder lot, agglutinant and additive agent.

DOUBLE EGRET castable is suitable to each kind of kiln stove inside lining thermal insulation layer, floats a glass kiln stove smoke seal to pour the material.

Low thermal conductivity excellent thermal insulation low liner shrinkage.

Good integrity with furnace lining, long service life, easy operation, could be shaped freely.

Refractory category allows direct contact of fire, suitable for various atmosphere.

Furnaces of metallurgy industry, heat treatment furnace

Furnace of incineration of garbage, recirculation fluidized bed furnace

Furnaces of chemical industry and construction industry

 

type		A-90	A-75	A-70	A-40	QA-90	QA-70	QA-60	QA-40
Al2O3 %		≥90	≥75	≥70	≥40	≥90	≥70	≥60	≥40
work temperature (℃)		≥1790	≥1790	≥1750	≥1730	≥1790	≥1790	≥1750	≥1700
density( g/cm3)		≥2.9	≥2.5	≥2.4	≥2.2	0.8-1.8	0.8-1.6	0.6-1.4	0.6-1.4
Compress strength(Mpa)	110℃×24h	≥50	≥50	≥50	≥40	5-15	5-15	3-13	3-13
	1500℃×3h	≥80	≥80	≥80	≥80	8-20	8-20	6-16	6-16
Bending strength(Mpa)	110℃×24h	≥8	≥8	≥8	≥8
	1500℃×3h	≥10	≥10	≥10	≥10
Thermal conductivity 　　　300±25℃　W/(m.k)						0.4-0.6	0.4-0.6	0.3-0.5	0.3-0.5
Liner shrinkage	110℃×24h
	1500℃×3h	±0.5	±0.5	±0.5	1400℃×3h	±0.6	±0.6	1450℃×3h	1300℃×3h
					±0.5			±0.6	±0.6
Max working temperature ℃		1700	1600	1500	1400	1700	1650	1450	1350