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:How is the fire endurance of the fireproof paint?: second level firerpoof of cooling rack. with a fire endurance from 1 to 1.5 hours. According to the code for fire protection design of buildings. 1. fireproof grading of first level is 1.5 hours 2, fireproof grading of second level is 1.0hour.

Q:How long is the fire endurance of the rock wool board?: Some time ago we did an experiment, the result is no change in the burning 30 minutes. The following is the picture of rock wool after the test .

Q:I wanna ask about the building insulation materials fire rating?: In China, the main external insulation materials are divided into level A, level B1, level B2 and level B3. According to the current "Combustion Performance Classification Method of Building Materials", level A thermal insulation material is incombustible material and inorganic insulation material. However, there are few level A thermal insulation material on the current market, only glass wool, rock wool board, foam glass and vitrified micro bead. However, compared with level A insulation material, the organic insulation materials are popular in the market. Level B insulation material can be divided into three levels, level B1 is flame-retardant, level B2 is flammable, and level B3 is flammable. Level B1 nonflammable thermal insulation material is determined by the fire endurance of the material, in addition, different parts of material is divided differently! More common is EPS / XPS insulation boards which have added flame retardant through special treatment. B2 level of combustible insulation materials, common to EPS expanded polystyrene foam insulation board and XPS board, that is, we often say that the general board. The ignition point of this material is very low, and it will release a large amounts of harmful gases in the combustion process. level B3 flammable insulation material is a kind of thermal insulation material which mainly made of polyphenyl foamed. Since this material is highly flammable, it has been eliminated. Civil construction insulation materials, popular building insulation materials in China's current market are mainly made by three organic foam, such as EPS (molded polystyrene board), XPS (extruded polystyrene board) and PU (polyurethane)

Q:What material is used to make furnace pipe of refractory bricks?: Refractory brick is called refractory?brick for short. It is a kind of refractory material fired by using refractory clay or other refractory materials. Faint yellow or brownish. It is mainly used in building smelting furnace and has resistance to high temperature 1,580 ℃ -1,770 ℃. Also known as refractory?brick. It is refractory material with a certain shape and size. It can be divided into burnt brick, unburned?brick, fused brick (fused cast brick), fire-resistant insulation brick according to preparation technics; It can be divided into standard brick, ordinary brick and special-shaped brick, etc according to shape and size. It can be used as high-temperature building material and structural material of building kiln and all kinds of thermal equipment. It can also withstand a variety of physical and chemical changes and mechanical action under high temperatures. For example, fireclay brick, high alumina brick, silica?brick, magnesia brick, etc.

Q:what is the grading standards of external wall thermal insulation materials?: What is the grading standards of external wall thermal insulation materials? summarizing the three versions of GB8624 (1997,2006,2011) external wall insulation fire rating can be basically divided into: A1, A2, B1, B2, B3 and other levels. the dividing is based on many technical indicators. It takes time to explain for It is professional and technical. For details, please contact Qingdao Shan Textile Instrument. they specialized in external wall insulation fire rating tester.

Q:What are refractory materials?: Refractories can be divided to two categories based on the shape and three categories according to the chemical nature of acidity, neutralily and alkalinity. Alkaline refractory materials are magnesia-carbon brick, magnesia chrome brick, calcium magnesium brick and magnesia-chrome bricks. Neutural refractory mateial are high alumina brick, corundum brick and clay brick. Case-hardened refractory materials are castable, ramming mass, gunning mix, coated mix, dry vibration material, etc.

Q:Technical scheme of refractory for refuse incinerator: Refractory technical index1. Physical and chemical indexes of graphite brickThe volume density (g/m3 = 1.6)The compressive strength (Mpa = 23)Apparent porosity is less than 21Ash% less than or equal to 0.5The thermal conductivity at room temperature (W/M.K = 45)200 c = 43600 C = 40800 C = 352, N-4 clay brick physical and chemical indexesRefractoriness 1690Load softening temperature of more than 1300 startThe change of reheating line is%1350 DEG C * 2H - 0.5 to +0.2Apparent porosity is less than 24The compressive strength (Mpa = 20)

Q:Who knows what is the external wall thermal insulation materials for level A fireproofing?: external wall thermal insulation materials level A fireproofing: Incombustible building material is a material that does not occur any burning. Class A1: Monomer inorganic non-combustible. Noncombustible means no open fire. Class A2: Non-flammable organic compound is namely composite materials and non-flammable, the amount of smoke must be qualified. Class B1: nonflammable building material: non-flame material has good flame resistance. It is difficult to fire under the condition of open fire in the air or high temperature, and it is not easy to quickly spread, and when the combustion?source is removed, the combustion will stop immediately. Class B2: combustible?building?materials: flame material has a good flame resistance. In case of fire in the air or at high temperature, it will immediately burst into flames, and easily lead to the spread of fire, such as wooden column, timber roof truss, timber beam and wooden stairs.

Q:What are the requirements on fire resistance period of C-level fireproof glass?: It can be classified into three types in terms of fire resistance, Class A: The fireproof glass which meets demands of fire integrity and fire insulation at the same time. This glass has advantages of excellent transmittance, fire-proofing(smoke resistance, fire insulation, and blocking heat radiation), sound insulation and impact resistance. It can be applied to architectural ornaments, fire resistant timber doorsets with steel structure, windows, upper beam, partition walls, daylighting roofs, ceiling screens, perspective floor and other building components which need transparency and fireproofing. Class B: The fireproof glass which meets demands of fire integrity and thermal radiation intensity at the same time. This glass is mostly composite fireproof glass which has advantages of transmittance, fireproofing, and smoke resistance. Class C: The fireproof glass which only meets demand of fire integrity. This glass has advantages of transmittance, fireproofing, smoke resistance and high intensity. It can be applied to fireproof glass partition walls, fire windows and with no requirements on outdoor curtain walls, etc. The fireproof glass can be classified as composite fireproof glass and single chip fire-proof glass in terms of structure.

Q:Is aluminium oxide refractory material?: Calcination aluminium oxide is refractory material of fine performance made from pure aluminium oxide through high-temperature calcination. It can be made into coarse-grained material, fine-grained material, fine powder and micro powder, which can be made into pure jade burnt products. For example, corundum brick, lightweight corundum bricks. It can also be made into a variety of unburning products together with other materials, such as carbonaceous materials. For example, aluminum carbon and aluminium zirconium carbonaceous materials. As for the production of unshaped refractory material, there are more species. It can be corundum, rubing grain, corundum spinel and can also be added into other materials to improve specific performance. It isn't limited to high-alumina castable refractory and it can be castable refractory, ramming?mass, impressionable plastic material, gunning mix and refractory mortar.

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