Silicon nitride bonded silicon carbide products - aluminum electrolysis slot wit
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- Loading Port:
- Qingdao
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- Min Order Qty:
- 5 m.t
- Supply Capability:
- 500 m.t/month
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Application: aluminum electrolysis bath side wall, the chemical industry reaction tank, a variety of high temperature abrasion resistant lining board, outlet bricks, furnace heating furnace and the aluminum liquid conveying pipe.
Features: has the advantages of long service life, high hardness, high temperature strength, liquid aluminum erosion and thermal erosion abrasion resistance, anti acid and alkali, corrosion resistance, low linear expansion rate higher characteristic, thermal conductivity.
Product name
Silicon nitride bonded
silicon carbide products
Chemical composition (%)
SiC ≥ 72.0
Si3N4 ≥ 21.0
Fe2O3 ≤ 0.3
Si ≤ 0.3
Display the porosity (%)
≤ 16.0
The volume density（g/cm3）
≥ 2.68
Compressive strength at room temperature （Mpa）
≥ 180.0
Flexural strength
(Mpa）
Normalatmospheric temperature
≥ 45.0
1400℃ ≥ 55.0
Thermal conductivityλ（W/m·K）
The experimental temperature
650℃
19.5
The experimental temperature
1000℃
17.2
Coefficient of temperature conductivity
α（cm2/s）
The experimental temperature
650℃
0.064
The experimental temperature
1000℃
0.053
Linear expansion rate
α30—1000
4.02×10－6（k-1）
α30—1100
4.06×10－6（k-1）
- Q:What are the requirements for refractory materials in heat treatment furnace?
- Fire resistance is an important performance index of refractory materials, but it does not represent the highest temperature in actual use of refractory materials. In actual use, refractories also bear certain pressure, therefore, must consider the high strength at high temperature refractory material, which is in high temperature under certain pressure without deformation, such as the NZ-40 refractory refractory degree up to 1730 DEG C, but the maximum temperature is only 1350 degrees celsius.
- Q:What is the content of free silica in the refractory bricks of high alumina bricks?
- In the meantime, the free silica content of silicon brick is as high as 90% above. Therefore, the most serious damage is silicon brick, followed by clay brick, high alumina brick, magnesia brick and so on.
- 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:In 2016, a few of the traditional refractory materials will be able to survive
- The other is in large enterprises and individual has the unique advantage of the small enterprises, with independent technology system, production equipment advanced, there are certain funds set up to deal with risk, timely reform, such enterprises compared to a few years ago the productivity and sales or have declined, but overall is still in the stage of production increased steadily.
- Q:What is the difference between high alumina brick and clay brick?
- Lightweight high alumina bricks are usually made of high alumina bauxite clinker with a small amount of clay. After grinding, the bricks are poured and shaped in the form of slurry by gas or foam method. They are fired at 1300~1500 DEG C. Sometimes industrial alumina can be used instead of some bauxite clinker. Used for lining and insulation of masonry kilns, as well as for areas where there is no strong, high temperature molten material erosion and erosion. When contacting the flame directly, the surface contact temperature shall not be higher than 1350 degrees centigrade.
- Q:What is the standard classification of high alumina bricks and high alumina bricks?
- High alumina brick is one of refractory materials. The main component of this kind of refractory brick is AL2O3. High alumina brick refractory clay brick and brick than refractoriness to high. It belongs to high refractory. High alumina brick Al2O3 more, close to the neutral refractory material, can resist acid slag and alkaline slag erosion, because it contains SiO2, so the ability of alkaline slag resistance than acid resistant slag ability is weaker.According to the number of AL2O3 content is divided into, 55,65, 75,80 and so on several grades.
- Q:Use of high alumina refractory bricks?
- Because of the high Al2O3 high aluminum products, low impurity content, the formation of fusible vitreous body less so than the clay brick high load softening temperature, but because mullite crystallization has not formed the network organization, so the load softening temperature is not high silica brick.
- Q:Which is faster for heat transfer between corundum bricks and high alumina bricks?
- 75 high aluminum and 43 clay bricks, 75 single weight 4.5kg or more. 43 3.65kg or so, the use of temperature 75, high aluminum in about 1520, 43 of brick 1430 or so, the color of 75 pan white, 43 of the Loess color. In short, the difference is great.
- Q:What is the apparent porosity of high alumina brick?
- In the production of high alumina bricks in addition to the entity, there are many different sizes and shapes of different pores, pores can be divided into three categories: one side closed the other side and the outside world is called open pores, closed in the product not communicated with the outside is called closed pores, penetrating through pores called the few products.
- Q:What are the main components of high alumina bricks?
- Sweat is like water mineral alumina bauxite, aluminum ore, magnesite, waves of gibbsite. Anhydrous alumina raw material, such as corundum, alumina, fused corundum. High alumina brick Zhengzhou gold company specializing in the production of various specifications, you can directly ask their technical staff.
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Silicon nitride bonded silicon carbide products - aluminum electrolysis slot wit
- Ref Price:
-
- Loading Port:
- Qingdao
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 5 m.t
- Supply Capability:
- 500 m.t/month
OKorder Service Pledge
OKorder Financial Service
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