Monolithic Refractories - Your Refractory Bricks, Castables Manufacturer For Kiln

Monolithic Refractory

Monolithic refractories, also known as unshaped refractories, are refractories composed of a well-graded mixture of granular and powdered materials along with a binder. They are directly used without shaping or firing and can be in the form of slurries, pastes, or loose powders. These materials can form seamless structures, hence termed as monolithic.

Monolithic refractories come in different forms like refractory castables, plastic refractories, ramming mass, gunning mix, refractory mortar, coatings, and refractory cement, tailored to specific application methods and process requirements.

Density: lightweight or heavyweight

Installation: Easy

Construction: without joints

Adaptability: various methods

Chemical Resistance: harsh chemical environments

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Refractory Cement

Refractory cement, also known as aluminate cement, is a type of high-temperature resistant cement.
Refractory cement exhibits high-temperature resistance and is generally used for construction, industrial equipment, and lining materials for kilns in high-temperature environments. Refractory cement has a high alumina content, not less than 50%, and a refractoriness not less than 1580 degrees Celsius. It possesses high strength, abrasion resistance, and can maintain good resistance to chemical erosion and physical properties at high temperatures.

Al2O3%:50-81

Fineness(d50/um): 5-13

Compressive Strength (72hrs)/MPa: 40-82

Max Service Temperature: (℃): 1300-1800

Sample: testing of sample is available

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Products of KERUI Refractory Cement

Refractory Cement CA50

CA50 Refractory Cement contains an aluminum content ranging between 50-60%. It is the most common high-temperature cement and is available in various grades, such as A600, A700, and A900.

Refractory Cement CA70

CA70 refractory cement has an aluminum content between 68-77%. It is white in color and is referred to as pure calcium aluminate cement.

Refractory Cement CA80

CA80 refractory cement contains an aluminum content of 77% or higher. Similar to CA70, it is also white and classified as pure calcium aluminate cement.

Refractory Castable/Concrete

Refractory castable is a mixture composed of refractory aggregates, binders, and additives, combined with water or liquid binders. It is classified into different types according to construction methods, such as vibratable castable, self-flow castable, refractory spray coating, ramming material, and refractory prefabricated parts. It is mainly used for lining high-temperature kilns.

Al2O3%: 40-95

Bulk Density: (g/cm³): 1.8-2.5

Compressive Strength: (MPa): 20-150

Max Service Temperature: (℃): 1300-1800

Sample: testing of sample is available

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Products of KERUI Refractory Castable/Concrete

Dense Castable

Dense castable

Dense castable is a high-strength, high-density refractory material used for lining furnaces, kilns, and boilers. It is designed to withstand extreme temperatures, thermal shock, and abrasion.

Insulation Castable

Insulation castable

Insulation castable is a lightweight refractory material that provides thermal insulation in high-temperature applications. It reduces heat loss and maintains structural integrity under thermal cycling

Ramming Mass

Ramming mass is a refractory material used to line induction furnaces. It is applied by ramming to form a dense lining that resists thermal shock, erosion, and chemical attack.

Gunning Mix

Gunning mix is a refractory material applied using a gunning machine to spray onto surfaces. It is used for repairing and lining furnaces, kilns, and boilers, offering quick installation and durability.

Plastic Refractory

Plastic refractory is a moldable material used in complex shapes and repairs where bricks cannot be installed. It offers high thermal stability and resistance to slag and metal penetration.

Castable Blcok(Pre-cast)

Castable block, or pre-cast block, is a pre-formed refractory component made from castable materials. It ensures uniform quality, reduces installation time, and is ideal for high-temperature environments like furnace linings.

Refractory Mortar

Refractory mortar, also known as jointing material, is primarily used as a bonding agent for kiln bricks or as a repair material for furnace linings. It serves as both the bonding material between refractory bricks and the filling material for brick joints. It can also be sprayed to form a tight seal as part of the insulation layer. It possesses properties such as low shrinkage and corrosion resistance.

Al2O3%: 40-78

Fe203%: 0.7-1.2

Refractoriness Underload/℃:1320-1600

Classification Temperature/℃:1300-1600

Sample: testing of sample is available

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Products of KERUI Refractory Mortar

Fire Clay Mortar

Fire clay mortar bonds firebricks in high-temperature applications like furnaces and kilns. It offers excellent adhesion, thermal stability, and resistance to thermal shock.

High Alumina Mortar

High alumina mortar is used for bonding high alumina bricks. It provides superior resistance to high temperatures, chemical corrosion, and mechanical wear, ideal for industrial furnaces and kilns.

Phosphate Mortar

Phosphate mortar contains phosphate binders, offering strong bonding and chemical resistance. It is used in high-temperature environments, especially where acid corrosion is a concern.

Magnesia Mortar

Magnesia mortar bonds magnesia bricks and is resistant to high temperatures and basic slags. It is ideal for steel industry applications, such as lining furnaces and ladles.

Applications Of Kerui Refractory Castable

Refractory castable is a special material with high-temperature resistance, corrosion resistance, and wear resistance. It can protect equipment from high temperature, corrosion, and wear, ensuring the normal operation of production equipment and the safety of personnel and property.

Cement & Lime

Cement & Lime, Refractory castables are mainly used in cement plants including the thermal insulation lining; Refractory castables are usually used in lime rotary kiln preheaters and front and rear kiln mouths.

Metallurgical Industry

refractory castables are mainly used in high-temperature furnaces, such as steel smelting furnaces, aluminum electrolytic cells, glass melting furnaces, etc.

Chemical Industry

refractory castables are mainly used for the lining of various chemical reactors and storage tanks.

Power Station

refractory castables can be used in the lining of electric boilers and kilns to withstand combustion under high temperature and pressure conditions.

Cement & Lime
Metallurgical Industry
Chemical Industry
Power Station

Production Process of Monolithic Refractory

Kerui is a professional refractory material manufacturer. First of all, we have advanced production equipment, technology, laboratories, and strict quality inspection departments to ensure the high quality of our products. Secondly, we provide customized services and develop customization according to customer needs. In addition, we have professional pre-sales and after-sales teams that can provide customers with integrated solutions, products, and construction solutions.

Certificates Of Kerui Refractory

Kerui Group has a number of international certifications, such as, ISO9001/ISO14001/OHSAS18001/CE/SGS. Besides,
Kerui’s products also have many domestic certificates, the quality is very guaranteed, and they have been unanimously recognized by customers at home and abroad.

Kerui Refractory Products Packaging & Shipping

The entire delivery process is tracked, and Kerui’s expert team solves specific project needs with the utmost professionalism.
If the customer’s project requires it, Kerui’s expert team will go to the customer’s country to provide face-to-face technical support.

Customer Case Of Kerui Refractory

Besides mainland China, Kerui Refractory has exported products to more than 50 countries and regions across 5 continents across the world, including Asia, Europe, America, Africa and Oceania.

We have received recognition and high praise from customers all over the world, and are constantly receiving customers’ repeat orders and referrals.

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Item/Grade		GLJ-50	GLJ-60	GLJ-65	GLJ-70	GLJ-80
ω (Al₂O₃) ≥/%		50	60	65	70	80
Refractoriness ≥/℃		1700	1720	1720	1720	1780
Bulk Density ≥/ (g/cm³)	110℃*24h	2.15	2.30	2.40	2.45	2.65
Cold Modulus of Rupture ≥/MPa		4.0	5.0	6.0	6.0	7.0
Cold Crushing Strength ≥/Mpa		25	30	35	35	40
Permanent Linear Change (T/℃*3h)/%		±0.8 (1350℃)	±0.8 (1400℃)			±0.8 (1500℃)

Item/Grade	Clay	High Alumina	Corundum
ω (Al₂O₃) ≥/%	45	75	92
ω (SiO₂) ≥/%	50	12	5
ω (CaO)	1.8	1.5	1.5
Bulk Density(g/cm³)	2.3	2.6	3
Cold Crushing Strength/Mpa	72	75	85
Permanent Linear Change/±%	0.3	0.5	0.5
Max Service Temperature/℃	1450	1600	1700
Water Needed/%	6.0-6.5	6.0-6.5	4.0-5.0

Item/Grade			SICAST 85	SICAST 80	SICAST 60
Physical Properties	Required Quantity (t/m3)		2.68	2.6	2.5
	Water Required for Casting (%)		45084	45084	45115
	CCS (kg/cm2)	@ 110℃x24h	650(140)	500(90)	450(70)
		@ 1000℃x3h	850(150)	600(150)	550(100)
		@ 1350℃x3h	1100(250)	1000(250)	1000(250)
	PLC (%)	@ 110℃x24h	-0.06	-0.06	-0.06
		@ 1000℃x3h	-0.1	-0.1	-0.2
		@ 1350℃x3h	-0.1	-0.1	-0.12
	TC (kcal/mh℃)	@ 350℃	11.5	11	8
Chemical Properties	ω (Al2O3)/%		9	9	20
Chemical Properties	ω (SiC + C)/%		83	78	58

Item/Grade	NS-1.6	NS-1.8	NS-2.0
ω (SiO₂) ≥/%	45	48	52
Bulk Density ≥/ (g/cm³)	1.6	1.8	2.0
Cold Crushing Strength ≥/MPa	5	8	10
Acid Resistance ≥/%	95	95	95
Thermal Conductivity Coefficient ≤ /[W/(m·K)] (350±25℃)	0.5	0.55	0.60
Service Temperature/℃	800	900	1000

Item/Grade		KR-1	KR-2	KR-3
ω (Al₂O₃) /%		70	75	85
ω (SiO₂) /%		25	17	13
ω (Fe₂O₃) /%		1	1	1
Bulk Density (g/cm³)		2.7	2.8	2.9
Cold Crushing Strength/MPa	110℃*24h	100	110	120
	1100℃*3h	100	110	125
	1400℃*3h	115	120	15
Cold Modules of Rupture/MPa	110℃*24h	15	15	18
	1100℃*3h	16	17	19
	1400℃*3h	17	18	5
Normal Temperature Wear/cm³		7	6	1500
0.2Mpa Refractoriness Under Load/℃		1450	1480	25
Max Service Temperature/℃		1550	25	1600
Permanent Linear Change/%	1300℃*3h	-0.3	-0.2	-0.2

Item/Grade		F1	F2	F3
ω (Al₂O₃) ≥/%		80	70	65
Room Temperature Flexural Strength ≥/Mpa	110℃*24h After Drying	12.0	10.0	9.0
Room Temperature Flexural Strength ≥/Mpa	1110℃*3h After Drying	12.0	10.0	6.5
Normal Temperature Compressive Strength ≥/Mp	110℃*24h After Drying	90	80	70
Normal Temperature Compressive Strength ≥/Mp	1110℃*3h After Drying	90	80	50
1110℃Flexural Strength After 5 Times of Water Quenching And Rapid Heating Cycles at Room Temperature/Mp ≥		5.5	5	5
Permanent Linear Change/%	1110℃*3h After Burning	±0.5	±0.5	±0.5

Item/Grade	GJ80	GJ90	GJ95
ω (Al₂O₃) ≥/%	80	90	95
Bulk Density ≥/ (g/cm³)	2.7	2.8	3.2
Flexural Strength ≥/MPa	9	10	11
Compressive Strength ≥/MPa	60	60	60
Permanent Linear Change ≤/%	±0.5	±0.5	±0.5

Item/Grade	KRMJ-55	KRMJ-60	KRMJ-65	KRMJ-70
ω (Al₂O₃) ≥/%	55	60	65	70
Bulk Density ≥/ (g/cm³)	2.3	2.4	2.5	2.6
Flexural Strength ≥/MPa	7	7	8	9
Compressive Strength ≥/MPa	40	50	60	70
Permanent Linear Change ≤/%	±0.5	±0.5	±0.5	±0.5

Item/Grade		QJ-0.5	QJ-0.8	QJ-1.0	QJ-1.1	QJ-1.3	QJ-1.5	QJ-1.8
Bulk Density (g/cm³)		0.5	0.8	1.0	1.1	1.3	1.5	1.8
Max. Service Temperature/℃		1150	1200	1250	1250	1300	1300	1350
Thermal Conductivity Coefficient ≤/[W/(m·K)]	350℃	0.15	0.25	0.3	0.4	0.45	0.6	0.65
Thermal Conductivity Coefficient ≤/[W/(m·K)]	700℃	0.20	0.30	0.4	0.45	0.5	0.7	0.75
Cold Crushing Strength ≥/MPa	110℃*24h	1.5	2.0	4.0	5.5	10	15	20
Cold Crushing Strength ≥/MPa	1000℃*3h	1.5	2.0	5.5	6.5	15	20	30
Permanent Linear Change (1000℃*3h)/%		-1.5	-1.0	-1.0	-0.5	-0.5	-0.5	-0.5