Raw Materials for Light Weight Insulation Refractory Castable

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Specifications

1. Easy construction.
2. Can according to customers' requirements.
3. Used for various high-temperature industrial kilns.

Light weight heat insulation refractory castable,Insulating castable,Insulation castable

Insulation castable is one of the unshaped refractory materials. It is made of refractory aggregate, refractory powder, binders and other additives. It is loose, No fixed shape,Has high liquidity, Casting and vibration molding,Can use directly or use after add appropriate water or other liquid. It is one of the new type refractory material of don't need calcination.

Construction way:casting+vibration moulding

Features:

1. Low bulk density.
2. Low thermal conductivity.
3. High strength.
4. Good thermal and insulation properties.

Physical and chemical index:

Item		Light-weight Hi-strength refractory castable
Item		ZYQ-0.6	ZYQ-0.8	ZYQ-1.0	ZYQ-1.1	ZYQ-1.3	ZYQ-1.5	ZYQ-1.8
Volume Density (g/cm3) ≤		0.6	0.8	1.0	1.1	1.3	1.5	1.8
Compressive Strength, (MPa)	110°C×16h ≥	1.5	2.0	4.0	5.5	7.5	15	15
Compressive Strength, (MPa)	1000°C×3h ≥	-	2.0	5.5	6.5	10	20	40
Heat Conductivity Coefficient (W/m·K)	700°C ≤	0.15	0.25	0.35	0.40	0.45	0.60	0.65
Heat Conductivity Coefficient (W/m·K)	1000°C ≤	0.20	0.25	0.40	0.45	0.50	0.70	0.75
Linear Variation (%);1000°C×3h ≤		-0.25	-1.0	-0.5	-0.5	-0.5	-0.5	-0.5
Safe Use Temperature (°C)		800	1000	1100	1200	1300	1350	1350

Application:

1. Furnaces of metallurgy industry, heat treatment furnace.

2. Furnace of incineration of garbage, recirculating fluidized bed furnace.

3. Furnaces of chemical industry and construction industry.

FACTORY:

$Light Weight Insulation Refractory Castable$

Q: Why can aluminium hydroxide not be used to make refractory material?: Hope my answer is helpful to you. It decomposes and produces aluminium oxide and water after heating, chemical equation for the reaction is: 2Al(OH)3=△=Al2O3+3H2O. Aluminium hydroxide can't be directly used to make refractory material because aluminium hydroxide is not stable.

Q: Which industry does the metallurgy and thermal insulating and refractory material belong to?: Metallurgical industry and refractory industry.

Q: Who knows about the grade C fireproof door materials?: grade C fireproof door materials: 1. the doorframe raw materials of grade C fireproof doors: the galvanized?steel?sheet is no less than 1.2 mm(the thickness of steel plate is no less than 1.5 mm when the height and width of doors are more than 2.1 m and 1.2 m respectively). 2. the door leaf raw materials of grade C fireproof doors: the thickness of galvanized?steel?sheets is no less than 0.8 mm. 3. the reinforcement raw materials of grade C fireproof doors: the thick?steel?plate is no less than 1.2 mm, if there are bolt-holes, the thickness of which is no less than 3.0 mm. 4. filler: The fireproofing filling materials that fit the environmental and standard needs(for instance, door leafs are filled with perlite fireproof materials inside, and doorframes are filled with fire-resistant cement) meet the test criterion promulgated by the relevant state departments. 5, the sealing requirements: there are seal grooves in doorframes and within which are embedded with refractories.

Q: How to apply the alumina powder on refractories?: The most common one in use is the refractory bricks.

Q: What's the B grade fireproofing material?: Grade B: rubber and plastic, extrusion molding, polyphenyl, PEF. organics, extruded sheet, polyphenyl board, phenolic resin. Hairong modules (thermal insulating and fireproof material) can reach grade B1 in fireproof performance.

Q: What are the specific steps of stirring the steel ladle castable?: Steps are as follows. 1 Compulsory mixer is used to stir the castable and bags, rope and other debris can not mix in the castable when stirred. 2, Castable should be unpacked on the scene. Stirred volume depends on the capacity of the mixer. Castable should be accurately measured and put into a blender. 3 The process of first dry mixing and then wet mixing is adopted. After the castable is added to the mixer, it is dryly mixed for 2 minutes, add about 5.2 to 5.5 percent of water and continue to add water while stirring. Water that is 80% of the total should be added, and then decide whether to continue to add or not depending on the consistence (noting that the water must be clean water and sewage can not be used). Then it is wetly mixed for 4 minutes and stirred for not less than 6 minutes at one time, until castable is even. In general, the bottom is slightly dry and the wall of the ladle is slightly dilute (the amount of water is only for reference). 4, The amount of water and mixing time should be controlled strictly when stirred to ensure that the needs of the consistency are met. If castable is too thin, it will seriously affect the quality of the material. The stirred volume, stirring time and water that is added should be consistent and they can not suddenly be thick or suddenly be thin. If the consistency does not meet the requirements, the castable should be put back to the mixer and stirred with appropriate water or dry materials. 5, It should be stirred evenly and casting should finish in 20 minutes, in order to avoid sclerosis, affecting structural strength of ladle lining 6, After each completion of construction, varieties of castable should be changed and the mixer should be cleaned 7, Stirring can stop in halfway. If the mixer breaks down and it can be repaired in a short time, some of the materials have to be removed before the machine is opened. If the machine can be repaired on time, castable refractory should all be removed.

Q: What substitutes are available for high-end refractories in addition to zircon sand?: The composite sand powder can effectively replace zircon sand, with the same operation process, less operation time and environmental protection

Q: Can anyone say something about what A-level fire-proof decorative material is?: Combustion performance rates of decoration materials ratess combustion performance of decoration materials A incombustible B1 flame retardancy B2 flammability B3 high flammability The B1 rate combustion performance of gypsum plaster board and mineral wool acoustic panel absorber installed on steel joist can be used as A-level decoration materials. Inorganic decorative coating applied on the A level substrate can be used as A level decoration materials. Hope you adopt

Q: Who knows the roofing fireproofing and waterproof material?: Colorful glass?fiber asphalt shingles the roofing through special materials treatment just like wearing a waterproof, fireproof coat, water rolling down from the roof is similar to the effect of lotus leaf drops, the wall will be always in the dry state, having excellent waterproof, mould proof, efflorescence and weathering. It can prevent the growth of moss and keep the surface clean. And let your roof does not change color for a long time. Colorful fiberglass asphalt shingles materials are widely used in: All types of buildings roofing waterproofing, leak, fire, pollution, wind, and mould proof and moisture-proof of libraries and archives. The color retention of ancient architecture and protection of human cultural relics. Through the number of ten million square meters of engineering applications and two decades of practical test, it welcomed by users.

Q: Graphite and other carbon materials may be oxidized to CO or CO2 at high temperatures. But why can they be refractories?: There is no contradiction for this. Any substance can be combustible, but different materials have different ignition points.There are many types of graphite. Pyrolytic graphite has a much lower ignition point. Therefore, as long as it reaches at a certain temperature, it can convert into graphite. Mostly, in practical applications (such as brake pads will add a certain amount of graphite), graphite is required to have refractoriness of below 1000 ℃. Graphite can serves as both the combustible and refractory material. So, it can be used as a fire-resistant and high-temperature-resisrant material because graphite (lamellar graphite) has a ignition point of at least 3000 degrees in an oxygen free condition. The above information is for reference only and is offered by Xin Ruida Graphite Company.

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