Silicon carbide bonded silicon nitride products - Sialon SiC corundum series mod

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Qingdao
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TT OR LC
Min Order Qty:
5 m.t.
Supply Capability:
500 m.t./month

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Product Description:

Application: the blast furnace cooling wall department, bosh, and lower stack, industrial furnace, the chemical industry reaction tank Suitable for high temperature furnace body, hearth, bosh, ceramic cup and other parts.

 

Features: high temperature and good chemical stability, high hardness, high temperature strength, wear resistance, oxidation resistance, alkali resistance and slag erosion better performance. With a high melting point, high strength, stable chemical property, anti - alkali erosion performance good, suitable for high temperature oxidizing or reducing atmosphere.

 

Product name
 
New type of Sialon bonded silicon carbide product 
  

New type of sialon corundum products

 
Grade
 YJSL-1
 YJSL-2
 

Chemical composition

(%)

Composition
 SiC
 ≥70.0
 AL2O2≥80.0
 

 N2
 ≥4.0
 ≥4.0
 

 Fe2O3
 ≤0.7
 
 

Display the porosity

(%)
 ≤16.0
 ≤16.0
 

The volume density

 g/cm3
 ≥2.65
 ≥3.05
 

Compressive strength at room temperatureMpa
 ≥180.0
 ≥100.0
 
Flexural  strength
 Normal atmospheric temperature 
 ≥42.0
 ≥20.0
 

 1400℃
 ≥50.0
 ≥22.0
 

Molten alkali erosion volume change rate%
 <10.0
 <10.0
 

Load softening point

(0.2MPa)℃
 1650
 1650
 

 

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Q:What are the high aluminum bricks made of?
The amount of refractory mud accounts for about 6% of the brick weight
Q:What is the difference between fireclay bricks and high alumina refractory bricks?
First of all, there is a difference in the material, one is clay, and one is high aluminum.Also known as clay brick brick, is a man-made small bulk building, clay brick clay (including shale, coal gangue powder) as the main raw material, through mud processing, molding, drying and roasting, solid and hollow.
Q:What should be used as binder for making high alumina bricks?
Bond for making high alumina brick: soft clay has good plasticity, so the high alumina brick is usually made of soft clay as bond. However, the free Al2O3 free SiO2 and bauxite clinker clay in under 1200 degrees occurred two times of Mullization reaction, generate large volume expansion, silicon porosity, strength reduction. Therefore, the amount of clay powder in the ingredient should be no more than 5%.
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:What are the grades of high alumina bricks?
High alumina brick according to the aluminum content is generally divided into: super high alumina brick, a high aluminum brick, two high alumina brick, three high alumina brick
Q:Difference between low creep high alumina brick and ordinary high alumina brick
The question is good, these two belong to the high aluminum brick products, when many manufacturers buy, I do not know how to distinguish.
Q:Are there any differences between insulating bricks and refractory bricks?
Heat preservation brick is to emphasize its heat preservation performance generally, not paying much attention to its refractoriness, but refractory brick is exactly the opposite. Different locations will use different materials, I hope we can choose carefully.
Q:What causes breakage of refractory bricks?
There are many factors that lead to the damage of refractory brick, can be divided into: the chemical loss (e.g. salt penetration, redox phenomenon), heat loss (burning, thermal shock), mechanical loss (kiln deformation, thrust, brick masonry quality etc.).
Q:Corundum, high alumina and fireclay refractory difference is what
In fact, they are not consistent with raw materials, corundum refractories can use white corundum, white corundum, brown corundum corundum material, alumina content of these materials is higher than 90%, while the high aluminum refractory material is bauxite, alumina in 90 to less than 70, and clay raw materials the aluminum content is less than 70..
Q:How are the high alumina bricks fired?
Generally, the high alumina bauxite is added with a small amount of clay. After being ground, the gas is injected and shaped in the form of slurry by the way of gas attack or foam, and it is burnt at 1300~1500 DEG C. Sometimes industrial alumina can be used to replace part of bauxite clinker. Used for lining and thermal insulation of masonry kilns, as well as for areas where there is no high temperature, high melting material erosion and erosion effects. When touching the flame directly, the touch temperature shall not be higher than 1350 degrees.

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