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: How many hours of the fire endurance time of the rock wool laminboard?: Limit is usually two hours. Pay attention to it please.

Q: What is molten silicon? What refractoriness do refractories made by it have? What properties of using does it have?: Molten silicon can be called quartz glass, which shows an amorphous silicon state. It is a liquid fusion at above 1723 degree and is an ultra-cooling state at low temperatures. It is not generated in refractories, but generated in the matrix, showing liquid state at a high temperature capable of buffering the stress with somewhat binding properties. If quartz glass is used as refractory, its function are melrly these ones. (These are what I konw for reference only.)

Q: What refractories have good mechanical property resistance and heat expansion and cold contraction property?: Explain that where you use it for and what requirements you have. Follow-up: I use it in metallurgical furnaces with the features of strong stirring and acidic residue.

Q: What antioxidant will be used in refractories?: Antioxidants (Antioxidants) is the material to prevent bad influence of oxygen. It is a kind of material that can help to capture and neutralize free radicals, the category of material to remove free radicals damage to human body. Some of the body's antioxidant is self-synthesis, others is also from the food supply. Strong antioxidant such as ASTA (short for astaxanthin), etc., generally human cannot synthesize and it must be intaked from food. (1)antioxidants in the food can protect food from oxidative damage and deterioration. (2) it has the antioxidant effect in the human body's digestive tract and prevent oxidative damage in the digestive tract. (3) after being absorped, it can play a role in other body tissues and organs. (4)It is derived from certain foods that have antioxidant effect of extract and can be used as a treatment drug. Antioxidant mechanism includs chelated metal ion, scavenging free radicals, quenching singlet oxygen and removal of oxygen and inhibit oxidase activity, etc

Q: What is the most reasonable drying heating curve of magnesia refractories? Products of less than 0.5T: You'd better oxidize magnesia preformed unit at room temperature for a longer period of time, then bake it, during which, it's enough to control the maximum temperature within 300 degrees. During the middle process, usually heating up for 4 hours and keep warm for 3 hours. The entire heating up process takes about 20 hours. If it is the site operation magnesia-based castable, it should be heated slowly in the early stage, and pay attention to keeping warm at 80 degrees Celsius. Every manufacturers has their own heating curves, so do not blindly adopt existing curves, try to make your own heating curve.

Q: How long is the duration of fire resistance that fireproof door of level B can endure?: The national standard for fireproof door of level B is 1.5h, which must be achieved. The data GB12955-2008 means that the door leaf of raw material is 0.8mm-1.2mm in thickness and door frame is 1.2mm-1.5mm in thickness. And other metal melting temperature shall not be less than 950℃, the duration of fire resistance shall not be less than 0.9 hours. Fire department will check and accept based on the manufacturer's inspection report, so you have to refer to manufacturer's inspection report if you want to know more in detail.

Q: Which kind of furnace hearth refractory is better?: Coal is acidic medium, so the matched material should be acidic refractories oriented, like silica?bricks. For example, the coking coke oven and carbon furnace made of carbon are in reducing atmosphere, so they use silica bricks which have low price and good high-temperature indicators. If the part has special requirements, you can then consider other refractory on request.

Q: Who knows about the fire endurance of grade C fire doors?: It can be classified according to the fire endurance and thermal insulation performance: The fire endurance of grade A fire doors is not less than 1.5 hours; that of grade B fire doors is not less than 1.0 hours; and that of grade C fire doors is not less than 0.5 hours. I hope my answer can help you.

Q: The principle of choosing fire-resistant material in Thermal Energy and Power Engineering equipment.: What thermal equipment? The most simple principle is durable, low cost and with no environmental pollution.

Q: which is better as household fireproof material ?: the thickness recommended is 1mm or more # 304 stainless steel plate, refractory corrosion-resistant, easy to clean. It now appears that among the most common fireproof material, asbestos is the best. But the asbestos harmful effect is also great, especially for lung damage. Now on the market, the polyurethane, polystyrene, rock wool glass wool, phephenolic aldehyde fireproofingthermal insulation board. But now the phenolic aldehyde fireproofing thermal insulation board has superior performance! phenolic aldehyde containing only carbon, hydrogen and oxygen atoms, when subjected to pyrolysis, except small amounts of CO gas, the other will not produce toxic gases, maximum smoke density is 5.0%.

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