High Alumina Brick - High Strength, Low Thermal Conductivity Insulation Firebrick for Kiln

High Alumina Brick - High Strength, Low Thermal Conductivity Insulation Firebrick for Kiln

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 1000 pc

Supply Capability:: 10000000 pc/month

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Packaging & Delivery

Packaging Details:	Polythene-foamed sheet bag and wooden case and wooden pallet or pack as customer's requirements.
Delivery Detail:	about 30 days

High strength, low thermal conductivity High Alumina insulation firebrick

This product uses high-grade hollow ball and alumina as the main raw materials, made by high temperature sintering. With features of High strength, low thermal conductivity, suitable for 1400°C below’s furnace insulation and lining.

Chemical properties

	Lg-1.0	Lg-0.9	Lg-0.8	Lg0.7	Lg0.6	LG0.5
AL2O3%	48
Fe2O3%	2.0
Densityg/ cm³ ≤	1.0	0.9	0.8	0.7	0.6	0.5
Compressive strengthMpa≥	4.0	3.5	3.0	2.5	2.0	1.5
linear change on reheating≤2%×2h Lab Temperature °C	1400	1400	1400	1350	1350	1250
thermal conductivity350°C±25 °C W/m.k	0.50	0.35	0.35	0.30	0.25	0.20

High strength, low thermal conductivity High Alumina insulation firebrick for Kiln

Q: How to reduce the harm caused by two times mullite in high alumina refractory material: Two times mullite refers to the content of aluminum is about 70%, in high temperature sintering, the expansion coefficient is large, the thermal expansion rate is high.

Q: How much is one ton of high alumina refractory brick?: Three high aluminum refractory brick Zhengzhou Kuwait is generally around 800. 32 years of experience, good.

Q: Does the chimney have high acid resistance?: The acid resistant bricks used for chimney are usually made of custom-made trapezoidal acid proof bricks, and the physical and chemical indexes of acid resistant bricks need to be confirmed according to the chimney's actual emission. At this point, you can consult our kerei refractories.

Q: What kind of material is the general metal case?: Generally speaking, the outer surface of the case is usually made of a steel plate of more than 1 millimeters. The thickness and the material of the steel plate are directly related to the rigidity of the case, as well as the capability of sound insulation and anti electromagnetic radiation. The regular manufacturers of the chassis plate thickness not less than 1.3mm, but there are also some small manufacturers with a thickness of only about 1mm steel, we do not need the ruler to the amount, as long as you put him up, the more weight in the same volume of the chassis is better, in addition, we can also use the finger bomb case shell. If you can hear the crisp percussion sound proof of the casing plate is thin and brittle, if you hear is relatively dull and heavy sound that the chassis material must be good, good general steel plate coated with a layer of thin zinc (bright part), so it can withstand high strength, impact resistance, hardness high elasticity. The frame parts of the chassis are made of high quality materials with high hardness. They are bent into angle shapes or strip shapes. We can shake the chassis frame of the case by hand. Good chassis should be relatively stable, and inferior chassis light is easy to shake. When choosing, we should also pay attention to the outer edge of the case and the edge of the inner bracket. Whether the incision is smooth or not, a good case will not appear in the case of rough edges, sharp edges, burrs and so on. While the poor case appears above phenomenon, often appear when installing the blood splattered". Generally speaking, the chassis must go through the corresponding grinding process before leaving the factory. The edge of the flat plate some burr, edges and corners are rounded, the corresponding fold some corner. When you install such a case, you don't worry about cuts, and some rough, poorly built cabinets tend to scratch your hands.

Q: What are ordinary bricks, refractory bricks, hollow bricks?: Referred to as refractory brick. Refractory wood made from refractory clay or other refractory material

Q: What are the requirements for Rubble backfill height?: Backfill should be filled with large stones, big face, small face upward, the decoration is stable, and then use small stones leveling, the gap between the stones can be swept into the slag, gravel, so that the gap filled.

Q: What is the heat preservation material used in a laboratory furnace?: Silicon carbide (SiC) is made from quartz sand, petroleum coke (or coal tar), sawdust (green salt produced when adding green silicon carbide) and other raw materials by smelting with resistance furnace at high temperature. Silicon carbide also rare minerals in nature, Mo sangshi. Silicon carbide, also known as carbon silica. Silicon carbide is the most widely used and the most economical kind of refractory materials in C, N, B and other non oxide refractory materials. It can be called "carborundum sand" or "refractory sand".

Q: The difference between light high alumina brick and heavy aluminum brick: Lightweight high alumina bricks, commonly called insulating refractory bricks, also known as insulating refractory bricks. First of all, literally, lightweight aluminum bricks and heavy aluminum bricks are very different in weight. Lightweight high alumina bricks, also called insulated high alumina bricks, are designed for insulation and heat preservation. In normal use, the utility model is not directly contacted with the furnace temperature, and is a refractory brick product which is close to the furnace wall and has the function of heat insulation and heat preservation.

Q: How to reduce porosity of high alumina brick: High alumina brick used as refractory products in refractory material, has a great application in masonry kilns, insiders pointed out that the quality of high alumina brick general porosity and it has a great relationship! So, how to reduce the porosity of high alumina brick rate is very important!

Q: Application characteristics of high alumina brick: Reheating line change. If the firing temperature of high alumina brick products is enough and the firing time is enough, the volume is stable, the change of the reheating line is small; on the contrary, the residual shrinkage of clay brick products is caused by recrystallization.

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