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$Henan Lite Refractory Material Co.Ltd.$

Henan Lite Refractory Material Co.Ltd.

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$Refractory cement$
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High alumina castable Made from high alumina aggregate, refractory powder, binders and other additives. Features high mechanical strength,good thermal shock resistance,abrasion resistance, application mainly used as liner of furnace, blast-furnace,heating furnace

Gunnig mix

►Description:
Gunnig mix is the refractory materials which adopts spraying methods.It is a technology for furnace building or repairing.Gunnig mixes is a mixture which is made from binder,refractory aggregate and admixture.
1.Binder --aluminate cement, phosphoric acid and phosphates,sodium silicate
2.Refractory aggregate
a.Fire clay (chamotte) based
b.High alumina based
c.Magnesia based-dead-burnt magnesia,fused magnesia
d.Al2O3-SiC-C based

►Technical parameters:

Item		1	2	3	4	5	6
Chemical Composition %	Al2O3	≥30	42	45	48	≥60	66
	SiO2	≥40(SiC)	40	42	43	24	27
	Fe2O3	≤1.2	1.4	2.2	0.9	1.2	1.8
Compressive strength MPa	110°C	35	29	29	26	35	58
	600°C	-	40	27(700°C)	28	-	34(800°C)
	1000°C	30	31	14	38	30	-
	1200°C	≥55 (1500°C)	-	15	-	≥55 (1500°C)	24
Bending Strength MPa	1000°C	-	7.0	3.1(700°C)	9	-	-
Reheating linear change %	1000°C	±0.4	-0.2	-0.12	-0.2	±0.41	-0.3(1200°C)
Refractoriness under load °C	4%	1320	-	1314	-	-	1300
Apparent porosity %		15.1	23.0	17.6	18.0	18.0	22.0
Bulk density g/cm3		2.35	2.06	2.14	2.32	≥2.34	2.52

Item				1		2	3		4
Chemical Composition %		MgO		80		96	76		93
		CaO		3		-	10		5
		SiO2		4		1.6	2.3		-
Bending Strength MPa		1000°C		7		6.4	7.8		4.2
		1500°C		6.4		8.0	9.8		5.6
Bonding strength		1400°C		2.0		-	-		3.4
Bulk density g/cm3				2.45		2.70	2.66		2.58


Item	1		2		3			4		5
Refractoriness °C	≥1530		≥1580		≥1610			≥1580		≥1530
Bulk density g/cm3	≥1.7 (1200°C)		≥1.7 (1300°C)		≥1.8 (1400°C)			≥1.4 (1300°C)		≥2.0 (1200°C)
Bending Strength MPa	≥4.0(110°C) ≥0.3(1200°C)		≥4.0(110°C) ≥0.3(1300°C)		≥4.0(110°C) ≥0.3(1400°C)			≥4.0(110°C) ≥0.3(1300°C)		≥4.0(110°C) ≥1.0(110°C)
Reheating linear change %	±1.0 (1200°C,3h)		±1.0 (1300°C,3h)		±1.0 (1400°C,3h)			±1.0 (1230°C,3h)		±0.4 (110°C)
Thermal conductivity W/(m.k)								≤0.3(150°C)
Chemical Composition %	Al2O3≥30 Fe2O3≤2.0		Al2O3≥35		Al2O3≥45			Al2O3≥35		Al2O3≥55 CaO≤0.5
Service temperature °C	1200		1300		1400			1300		1200

Material		Magnesia	magnesia-calcium1	magnesia-calcium2
Chemical Composition %	MgO	≥80	65～75	55～65
	SiO2	4～6	≤5	≤5
	CaO	-	8～10	20～35
Bulk density g/cm3	110°C,24h	1.6～2.0	1.7～2.0	1.7～2.0
Bulk density g/cm3	1500°C,3h	1.7～2.1	1.8～2.1	1.8～2.1
Bending Strength MPa	110°C,24h	1.5～2.0	1.6～2.3	2.0～2.5
Bending Strength MPa	1500°C,3h	4～6	5～6	5～8
Reheating linear change %	110°C,24h	-(1.0～1.5)	-(1.2～1.8)	-(1.2～2.5)
Reheating linear change %	1500°C,3h	-(2.5～3.1)	-(2.0～3.0)	-(2.5～3.2)
Thermal conductivity W/(m.k)	1000°C	≤0.6	≤0.6	≤0.6

Item		Al2O3-SiC-C based refractory gunning mixes
Chemical Composition %	Al2O3	67	70	22
	SiC	14	10	60
	SiO2	-	-	15
	CaO	-	-	1.4
	F.C	3	3	-
Bulk density g/cm3		2.56(110°C)	2.75(110°C)	2.5(816°C)
Bulk density g/cm3		2.62(1450°C)	2.73(1450°C)	2.5(816°C)
Apparent porosity %		18.5(110°C)	21.6(110°C)	16.0(816°C)
Apparent porosity %		9.6(1450°C)	20.0(1450°C)	16.0(816°C)
Strength Mpa		Bending Strength 16.0(110°C) 19.6(1450°C)	Bending Strength 2.5(110°C) 6.7(1450°C)	Compressive strength MPa 83(816°C)
Reheating linear change %		-0.50(1450°C)	＋0.11	-0.1(816°C)
water content to mixture %		6	6	6

►Application:
Gunnig mixes is widely used for repairing the lining of blast furnace,hot blast stoves,Iron Runner for BF, martin furnace,converter furnace,electric furnace(EAF),steel ladle, torpedo ladle,hot metal ladle,secondary refining furnace,heating furnace, soaking pit furnace,tube heating furnace,reforming furnace,boiler,flue,chimney etc kiln furnace thermal equipment.

►Delivery:
Packing:
1.Plastic bag(25kg), Kraft bag (25 kg), Plastic bag(1 ton);
2.1 ton on pallet with plastic film
3.As per customer’s request

Delivery Time:
1.Samples:4 days for samples;
2.Batch goods:Within 10-20days.