Raw Materials for High Alumina Low Cement Refractory Castable

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Specifications

1.Good density and high strength
2.Low cement and competitive price
3.Good quality and liquidity
4.ISO 9001:2000

Product Description

Type:We can supply High alumina low cement castable,Mullite low cement castable,Corundum low cement castable,High alumina self flowing castable,Mullite self flowing castable,Corundum self flowing castable,AZS Castable,Zircon-Mullite Castable,Zircon-mullite Ramming Mix etc.

Advantage:Our High alumina low cement castable: with high mechanical strength and good thermal shock resistance, abrasion resistant,good density.

Application: they are widely used in various kinds of kiln lining.Such as boiler, blast furnace hot blast stove, heating furnace, ceramic kiln, etc

Specification:

High alumina low cement monolithic refractory castable

Product Index		LCC-50	LCC-55	LCC-60	LCC-65	LCC-70	LCC-75	LCC-80
Chemical composition	Al2O3 % ≥	50	55	60	65	70	75	80
	SiO2 % ≤	42	40	34	30	23	19	12
	CaO % ≤	2.0	2.0	2.0	2.0	2.0	2.0	2.0
Bulk density g/cm3 ≥		2.20	2.25	2.45	2.50	2.60	2.65	2.80
Cold crushing strength Mpa ≥	110℃×24h	40	50	55	60	70	76	85
	1100℃×3h	55	65	70	70	80	84	90
	1500℃×3h	55	65	70	70	80	80	90
Modulus of rupture Mpa ≥	110℃×24h	6	6	6	7	8	10	11
	1100℃×3h	9	9	9	10	11	11	11
	1500℃×3h	10	10	10	10	11	11	11
Reheating linear change % ≤	1100℃×3h	0.1	0.1	0.1	0.1	0.1	0.1	0.1
Reheating linear change % ≤	1500℃×3h	0.3	0.3	0.3	0.3	0.3	0.3	0.3
Construction water %		7-8	7-8	7-8	7-8	7-8	7-8	7-8
Max working temperature ℃		1500	1600	1600	1600	1600	1650	1700

Packaging & Delivery

Packaging Detail:	in woven bags
Delivery Detail:	20 days

FACTORY:

$High Alumina Low Cement Refractory Castable$

Q: hat kind of fire retardant materials are there: At present, there are mainly organic and inorganic flame retardant materials, halogen and non halogen. Organic flame retardant materials are represented by bromine, nitrogen and phosphorus and its compounds; Inorganic fire retardant materials include antimonous oxide, magnesium hydroxide, aluminum hydroxide, and silicon. Generally speaking, organic flame retardant materials have a good affinity, and can be added in the plastics. Brominated flame retardant agent occupy the absolute advantage among organic flame retardant system, though it’s “controversial” in terms of environmental protection, it has been difficult to have other flame retardant system replaced.

Q: What's the function of aluminium dihydrogen phosphate on the refractories?: Mainly used for binder of high-temperature furnace refractory. Characteristics of liquid aluminum dihydrogen phosphate, castable. solid used for refractory spraying coating, chamotte, ceramic construction, which has high break resistance after being dried in 350-500 ° C, phosphate bricks. Characteristics of the solid aluminum dihydrogen phosphate, binding agent used for castable and casting industry: together with the refractory aggregate, ramming mixes at room temperature: Easy to mix, crush resistance, hydration resistance, chamotte, will not become soft even if soaked or boiling in water, molding. Liquid use refractory spraying coating, mainly used for corundum, chrome corundum water gap in refractory industry. The production of chrome aluminum zirconium corundum brick for water-coal-slurry gasifier is especially suitable for site construction applications mainly used for the electrical industry, high-temperature kiln and furnace, hardener, after mixing between 90-110 ° C for 4-24 hours at a constant temperature, forming strong bonding strength, electrical insulation, heat treatment resistance furnace

Q: What's the fire endurance of hollow brick?: This question is really very simple. It is better no to exceed 1050℃, or it will be easily burnt. I think 980℃ is ok actually. Around 950℃, no more than 1100℃, or brick will be burnt and melted easily.

Q: Who knows how to divide the building fire grade and fire resistance grade?: I hope to help you building fireproof rank division is one of the most basic measure in building fire safety technical measures, Building's fireproof rank is divided into class one, two, three, four according to China's architectural design specification. Fire-resistant capability of the highest level is the strongest; Fire resistance of four level of the weakest. The fire resistance level of a building depends on the combustion performance and fire resistance of the building components that comprise the building. The so-called building component refers to a series of basic components, such as wall, foundation, beam, column, floor, stair, ceiling and so on. The judgment condition of the fire resistance There are three conditions for components' fire resistance limit to be reached, namely, the fire resistance limit of the building component: Loss of support and integrity; loss of time to fire the role of the time; as long as any of these three conditions is met, it will reach its limit of fire. Hope my answer will help you.

Q: What is the most reasonable drying heating curve of magnesia refractories? Products of less than 0.5T: o

Q: Who knows about the differences between 3M fireproofing materials and ShiLiDe materials?: ShiLiDe materials are rubbish which can not used in many industries now, because the main materials of which are mineral wool boards. These boards are harmful to human body, will lead to chronic poisoning, and the quality of which is bad! You must pay attention to it! They can not be used in chemical and pharmaceutical plants.

Q: Who knows about ranking rules of fireproofing thermal insulation materials for exterior wall?: (1) the height of buildings is greater than or equal to 24 m, the combustion performance of thermal insulation material should be A-level. (2) the height of buildings is less than 24 m, the combustion performance of thermal insulation materials should be A- or B1-level. When using B1-level thermal insulation materials, fire barrier zone should be set in each floor. (3) incombustible materials should be used as the protective layer of thermal insulation materials. Thermal insulation materials should be completely covered by protective coatings. The thickness of protective layer should be no less than 3 mm. (4) The base walls should be set in buildings with nontransparent curtain wall structures of metal, stone,etc. The fire endurance of which should comply with relevant provisions of current fire?safety?rules on fire endurance of external wall. The fire endurance and fire protection construction of pier?between?two?windows, window sill walls, skirt walls of glass?curtain?walls should comply with relevant provisions of current fire?safety?rules on building curtain walls. (5) the internal cavity of base walls, as well as the space between the skirt wall and base walls, pier?between?two?windows, window sill walls should be sealed with fire-proof sealing materials at each floor.

Q: What parts of cement kilns are refractories used on?: These parts are decomposition furnace, smoke chamber, kiln, kiln hood, grate?cooler, tertiary air duct and coal pipe.

Q: What are the requirements when producing fireproof materials by kaolin?: Kaolin refractories in fact play a role in two aspects, one is to improve the refractoriness, the second is to improve plasticity of the the refractory . Aluminum content the higher the better, of course, but kaolin is not the only material to improve the content of aluminum, using materials that contain higher content of aluminum such as the bauxite chamotte. So the content of kaolin aluminum does not have to be too high. over 38% is fine. viscosity is important and strong viscidityis better without having to add bentonite. Refractoriness above 1400 degrees is enough.

Q: What can red stone refractory do?: In severe cases, the resistance to high temperature without softening down the Celsius temperature. Refractory materials are widely used in metallurgy, chemical, petroleum, machinery manufacturing, silicate, power and other industrial fields, the largest amount of metallurgical industry, accounting for 50% ~ 60% of the total output. Chinese use less impurity clay in more than 4000 years ago, firing pottery, and have been able to cast bronze. In the Eastern Han Dynasty (AD 25 ~ 220) have been used to make clay refractory kiln firing porcelain material and sagger. At the beginning of twentieth Century, the development of refractories to high purity, high density and ultra high temperature products, while developing completely without firing, small consumption of unshaped refractory materials and high refractory fiber (160 for industrial furnace refractories above 0 DEG C). The former, such as alumina refractory concrete, is often used in large chemical plants, ammonia synthesis plant, two - stage reformer furnace wall, the effect is good. Since 50s, the rapid development of atomic energy and space technology, the development of new energy technology, requires the use of special refractory material of high temperature resistance, corrosion resistance, thermal shock resistance, erosion has excellent properties, such as melting point above 2000 DEG C, oxide refractory compounds and high temperature composite refractory materials.

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