Product Details

Specifications

high alumina castable refractory
1.high strength
2.high service temperature
3.good thermal shock resistanc

Specifications

high alumina castable refractory
1.high strength
2.high service temperature
3.good thermal shock resistance

ITEM		Dense refractory castable				Light-weight refractory castable				Clay
		Corundum	Corundum mullite stone	High Alumina	Clay	Corundum	Corundum mullite stone	High Alumina	Clay	Clay
		A-90	A-75	A-70	A-40	QA-90	QA-70	QA-60	QA-40	JN-1400	JN-1500
Al2O3 %		≥90	≥75	≥70	≥40	≥90	≥70	≥60	≥40	≥50	≥60
Refractoriness C		≥1790	≥1790	≥1750	≥1730	≥1790	≥1790	≥1750	≥1700	SiO2≤40	SiO2≤25
Bulk Density g/cm 3		≥2.9	≥2.5	≥2.4	≥2.2	1.2-1.8	0.8-1.6	0.6-1.4	0.6-1.4	>2.3	>2.4
Cold Crushing Strength( MPa	110 C ×24h	≥50	≥50	≥50	≥40	5-15	5-15	3-13	3-13
Cold Crushing Strength( MPa	1500 C ×3h	≥70	≥70	≥70	≥50	8-20	8-20	6-16	6-16
Modulus	×24h	≥8	≥8	≥6	≥5					2-5	2-5
Modulus	1500 C ×3h	≥10	≥10	≥8	1350C×3h≥6					1300C×3h≥5	1450C×3h≥5
Heat Conductivity /W.(m.K) ( 300 C±25 C )						0.4-0.6	0.4-0.6	0.3-0.5	0.3-0.5
Linear change rate %	110 C ×4h									-0.2~0	-0.2~0
Linear change rate %	1500 C ×3h	±0.5	±0.5	±0.5	1350C×3h±0.5	±0.6	±0.6	1450C×3h±0.6	1300C×3h±0.6	1300C×3h -0.2~+0.5	1450C×3h -0.2~+0.5
Max Working Temperature/ C		1700	1600	1500	1400	1700	1600	1400	1300	1400	1500

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