Low-cement, Ultra Low-cement and No-cement Castables

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PRODUCTS / Refractory Products for Industrial Furnaces /

Low-cement, Ultra Low-cement and No-cement Castables

Brand: PN-LN、PN-BH、PN-AHS-G、PN-AM、PN-ULN、PN-ULGL、PN-ULG、PN-NN、PN-NGL、PN-NG、PN-SP

PRCO offers the widest range of castables with different chemical compositions and binding systems to meet various applications, among which PN serial low cement and no cement castables have been awarded prize of National Level Science & Technology Advancement.

The products feature high strength, low porosity and superior resistance to erosion/corrosion etc. Satisfactory performances have been proven in over 50 reheat furnaces.

Main Properties for Low-cement Al2O3-based Castable (1):

Brand		PN-LN		PN-BH50		PN-BH60
Brand		Guaranteed index	Typical index	Guaranteed index	Typical index	Guaranteed index	Typical index
Al₂O₃ (%);		≥40	47.62	≥50	53.86	≥60	63.48
Bulk density (g/cm³);	110℃×16h	≥2.20	2.35	≥2.25	2.45	≥2.50	2.60
Bulk density (g/cm³);	1350℃×3h	≥2.15	2.34	≥2.20	2.43	≥2.45	2.58
Cold crushing strength (MPa);	110℃×16h	≥30	50	≥35	64	≥40	68
Cold crushing strength (MPa);	1350℃×3h	≥50	86	≥60	98	≥68	112
Modulus of rupture (MPa);	110℃×16h	≥5	7	≥5	10	≥6	12
Modulus of rupture (MPa);	1350℃×3h	≥7	10	≥7	15	≥9	12
Reheat linear change (%)	110℃×16h	0~-0.2	0~-0.2	0~-0.2	0~-0.2	0~-0.2	0~-0.2
Reheat linear change (%)	1300℃×3h	0~-0.5	0~-0.5	0~-0.5	0~-0.5	0~-0.5	0~-0.5
Normal service temp. (^oC)		1300		1350		1350
Max service temp. (^oC)		1500		1600		1600
Application		Low temp area (roof and sidewall)		All area

Main Properties for Low-cement Al2O3-based Castable (2):

Brand		PN- BH65		PN- BH68		PN-BH70
Brand		Guaranteed index	Typical index	Guaranteed index	Typical index	Guaranteed index	Типичный показатель
Al₂O₃ (%)		≥65	67.34	≥68	69.62	≥70	71.88
Bulk density (g/cm3);	110°C×16h	≥2.50	2.61	≥2.55	2.63	≥2.55	2.65
Bulk density (g/cm3);	1350°C×3h	≥2.45	2.58	≥2.45	2.61	≥2.45	2.63
Cold crushing strength (MPa);	110°C×16h	≥45	66	≥45	66	≥45	68
Cold crushing strength (MPa);	1350°C×3h	≥65	109	≥68	118	≥70	124
Modulus of rupture (MPa);	110°C×16h	≥6	10	≥7	11	≥7	12
Modulus of rupture (MPa);	1350°C×3h	≥9	11	≥9	18	≥9	15
Reheat linear change (%)	110°C×16h	0~-0.2	0~-0.2	0~-0.2	0~-0.2	0~-0.2	0~-0.2
Reheat linear change (%)	1300°C×3h	0~-0.5	0~-0.5	0~-0.5	0~-0.5	0~-0.5	0~-0.5
Normal service temp. ( °C)		1350		1350		1350
Max service temp. (°C)		1600		1600		1600
Application		Reheating furnace lining

Main Properties of Mullite Castables:

Brand		PN-AM52	PN-AM62	PN-AM65	PN-AM70
Al₂O₃ (%);≥		52	62	65	68
Bulk density (g/cm³);≥	110°C×16h	2.40	2.45	2.50	2.55
Bulk density (g/cm³);≥	1350°C×3h	2.35	2.40	2.45	2.50
Cold crushing strength (MPa);≥	110°C×16h	65	70	75	75
Cold crushing strength (MPa);≥	1350°C×3h	75	80	80	80
Modulus of rupture (MPa);≥	110°C×16h	8	10	10	10
Modulus of rupture (MPa);≥	1350°C×3h	12	12	12	8
Reheat linear change (%)	110°C×16h	0~-0.2	0~-0.2	0~-0.2	0~-0.2
Reheat linear change (%)	1350°C×3h	0~-0.5	0~-0.5	0~-0.5	0~-0.5
Normal service temp. (°C)		1300	1350	1400	1400
Max service temp. (°C)		1500	1600	1600	1600
Application		Furnace lining

Main properties of Ultra Low Cement Castables and No Cement Castables:

Brand		PN-ULN	PN-ULGL	PN-ULG	PN-NN	PN-NGL	PN-NG	PN-SP4
Al₂O₃ (%);≥		45	75	92	50	75	95	-
Al₂O₃ (%); +MgO(%); ≥		-	-	-< p>	-	-	-	75
Bulk density (g/cm³); ≥	110°C×16h	2.20	2.60	3.15	2.25	2.60	3.10	2.70
Bulk density (g/cm³); ≥	1350°C×3h	2.15	2.55	3.10	2.20	2.55	3.03	2.65
Cold crushing strength (MPa); ≥	110°C×16h	30	30	35	30	30	30	40
Cold crushing strength (MPa); ≥	1350°C×3h	80	90	100	80	90	100	60
Modulus of rupture (MPa); ≥	110°C×16h	4	6	6	4	6	6	8
Modulus of rupture (MPa); ≥	1350°C×3h	8	12	15	6	10	18	6
Reheat linear change (%)	110°C×16h	0~-0.2	0~-0.2	0~-0.2	0~-0.2	0~-0.2	0~-0.2	0~-0.2
Reheat linear change (%)	1300°C×3h	0~-0.5	0~-0.5	0~-0.5	0~-0.5	0~-0.5	0~-0.5	0~-0.5
Normal service temp. (°C)		1300	1400	1450	1300	1450	1450	1350
Application		Roof & wall	Lining		Roof & wall	Lining		Slag line

Main Properties for Low –cement Castable with Steel Fiber:

Brand		PN-AHS-G	PN-AH10-G	PN-AH65-G	PN-AH70-G
Аl₂0₃(%), >		50	60	65	68
Bulk density	110°Сх 16h	2.30	2.45	2.50	2.55
(g/cm³), >	1350°С х 3h	2.25	2.40	2.45	2.50
Cold crushing strength (МРа), >	110°Сх 16h	55	60	65	70
Cold crushing strength (МРа), >	1350°С х 3h	70	75	80	85
Modulus of rupture (МРа), >	110°Сх 16h	8	10	10	10
Modulus of rupture (МРа), >	1350°С х 3h	8	10	10	10
Reheat linear change (%)	110°Сх 16h	0—0.2	0—0.2	0—0.2	0—0.2
Reheat linear change (%)	1350°С х 3h	0—0.5	0—0.5	0—0.5	0—0.5
Normal service temp. (°С)		1350	1350	1350	1350
Max service temp. (°С)		1600	1600	1600	1600
Application		Furnace lining