High Alumina Bricks for Lime Kiln Insulation and Fireproofing
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 3000 pc
- Supply Capability:
- 50000 pc/month
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Insulation Fireproof High Alumina Refractory Bricks used for Lime Kilns
Production description
High alumina refractory brick contain Al2O3 more than 60%, which is made of high grade bauxite through high temperature calcinations. Its refractories is usually above 1750 °C. The main mineral components are corundum and mullite phases. It is a kind of neutral refractory material so that it enjoys excellent resistance to acid and alkali corrosion. According to Al2O3 content,it can be divided into three degrees:The Al2O3 content is more than 75%.The Al2O3 content range from 60% to 75%.The Al2O3 content range from 48% to 60%.
What are the advantages of our refractory bricks?
1. High-temperature endurable .
2.Good thermal shock resistance.
3.High cold crushing strength
4.Good resistance to abrasion and corrosion.
5.Good thermal spalling resistance.
6.High mechanical strength.
7.Good volume stability at high temperature.
How many types are there in our refractory bricks
According to the using eqiment:The high alumina is divided into different kinds according to the content alumina and usage,they are widely used in glass furnace, blast furnace,hot blaststoves electric arc furnace,cement kiln and other heat-engineering equipments.
According to its property and function :Common high alumina bricks,phosphate-bonded high alumina bricks for cement kiln,spalling resistance high alumina bricks.
products \index | code | Al2O3≥ | Fe2O3≤ | Bulk Density≥ | Apparent Porosity ≤ | Cold crushing strength ≥ | Refractoriness under load ≥(0.2Mpa) |
Unit | %
| g/cm3 | % | MPa |
°C | ||
High alumina brick | LZ-48 | 48 | 2.0 | 22 | 35 | 1420 | |
LZ-55 | 55 | 2.0 | 22 | 40 | 1450 | ||
LZ-65 | 65 | 2.0 | 23 | 45 | 1500 | ||
LZ-75 | 75 | 2.0 | 23 | 50 | 1520 | ||
LZ-80 | 80 | 1.8 | 22 | 55 | 1530 | ||
| phosphate combines high alumina bricks | P | 75 | 2.5 | 2.65 | 75 | 1350 | |
| PA | 77 | 2.5 | 2.70 | 75 | 1300 | ||
spalling resistance high alumina bricks.
| KSL-65 | 65 | 1.6 | 2.45 | 24 | 40 | 1500 |
| KBL-75 | 75 | 1.6 | 2.6 | 24 | 45 | 1520 | |
Production & Quality
1.Production Process
Crushing→Mixing→Shaping→Drying→Firing→Inspection→Packing shipment
2.Quality Control
a.According to the chemical content,raw materials are classified into different levels to ensure quality of brick first.
b.During the production,every brick will be weighed twice strictly to reduce the error of weight .
c.Before delivery, the inspectors will inspect the size,appearance,physical and chemical properties of brick again in factory.
F&A
Q1.Are you a manufacture or trader?
A:To be honest we are a trader,but we have stable cooperation factories.And we can supply good pre-sale service, after-sales service.
Q2.Can we visit your company?
A:Sure,welcome at any time,seeing is believing.
Q3. Do you provide samples?
Yes, samples are available.
Q4. Do you accept OEM?
Yes, we can do OEM.
Q5.What's the MOQ of trial order?
A:No limit,We can offer the best suggestions and solutions according to your condition.
Q6.What are the payment terms?
Usually T/T,but L/C,Western Union etc are available for us.
Q7. How long is delivery time?
The delivery time will be determined according to the quantity of the order.
Q8.How are your products’ quality?
The products will be strictly inspected before shipment, so the quality could be guaranteed.
Q9.How to slove the quality problems?
A:If the products are not confirmed to customer samples or have quality problems,our compay will be responsible to make compensation for it.
Q10.What is the service life of your bricks?
A:The service life of different bricks is unlike.It also depends on your using condition and method.
Q11.How about your company's certification?
A:ISO9001 and Test Report,also we could apply other necessary certification.
- 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: How much is one ton of high alumina refractory brick?
- High alumina refractory brick according to the different content of AL2O3 is divided into grade, grade one and grade two, and grade three high aluminum brick, Zhengzhou Kang Hui refractories factory price in 800-1900 yuan / ton, stable quality, are exported to the domestic and foreign markets.
- Q: What is the price of the latest thermal insulation material?
- There are many kinds of insulation materials, and the price will fluctuate with the market. Small quantities of inquiry or procurement, then go directly to the local thermal insulation market, a wide variety of prices are basically the market price.
- Q: What is the standard classification of high alumina bricks and high alumina bricks?
- High alumina brick is a kind of refractory material in refractory brick products. It is made of refractory clay or other refractory material. It belongs to the product of Si Al System
- Q: The difference between aluminium refractory and magnesia refractory
- Therefore, the difference between the two is a neutral, one is alkaline, the original product is different naturally.
- Q: How to reduce porosity of high alumina brick
- When proportioning, the ratio of coarse to medium to fine is 4:2:4, and the maximum particle size should be no more than 5mm. The mixing order is as follows: first adding coarse particles, then adding sulfite pulp waste liquid, premixed 3min, then adding high aluminum fine powder for mixing. The operation process is coarse and fine particles added in sulfuric acid with crushed pulp waste.In order to reduce the porosity, our company suggested that the single-sided pressure changed to double-sided pressure instead of double-sided pressure, the number of strikes should also vary according to the amount of feeding. If the kiln is fired, the location of the fire hole shall be adjusted so that the middle part is dense, the edge is thin, and the door near the kiln is properly encrypted so that the temperature difference between the furnace top and bottom and the temperature difference between the inside and outside are not greater than 20 degrees.
- 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: The difference between ordinary and diatomite brick refractory brick
- Insulation products made from diatomaceous brick and porous diatomite. The main raw material is natural porous diatomite, and then a small amount of clay and fuel are added. The volume density of diatomite brick was 0.7g/cm3, compressive strength at room temperature is 1 ~ 2MPa, the coefficient of thermal conductivity at 400 C for 0.13 ~ 0.20W/ (M - K), the apparent porosity is greater than 70%, the coefficient of thermal expansion (1280 degrees) 0.9 x 10 - 6 DEG -1, refractoriness is greater than 1250 DEG C. Mainly used in industrial kilns and other thermal equipment, thermal pipes insulation materials, generally withstand the hot surface temperature of about 1000 degrees celsius. Mainly used in industrial kilns and other thermal equipment, thermal pipes insulation materials, generally withstand the hot surface temperature of about 1000 degrees celsius.
- Q: What are the requirements for refractory materials in heat treatment furnace?
- The structural strength of high temperature is evaluated by loading softening point. Load softening point is that under certain pressure (2 kg/ cm 2 = 0.2MPa) under the condition of heating rate to heating, measured the sample deformation (deformation for the original sample 0.6%) temperature. This temperature is called the softening point of the refractory. Sample size is Phi 36 x 50mm.
- Q: How high can aluminum bricks expand at 80O degrees of heat?
- The expansion of high alumina brick is not only related to temperature, but also related to its material composition. The refractory temperature of high alumina brick is above 1770 centigrade. The temperature of 800 DEG C has little influence on the expansion of high alumina brick.
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High Alumina Bricks for Lime Kiln Insulation and Fireproofing
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 3000 pc
- Supply Capability:
- 50000 pc/month
OKorder Service Pledge
OKorder Financial Service
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