High Alumina Brick for High Temperature Refractory Applications in Steel and Non-Ferrous Metals Metallurgy
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- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 3000 pc
- Supply Capability:
- 50000 pc/month
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High Temperature Refractory Brick For Steel And Non-ferrous Metals Metallurgy
Feature For Refractory Brick:
1. Low bulk density, low thermal conductivity, good thermal insulation performance.
2. Refractory category allow direct contact of fire, suitable ofr various atmosphere
3. Good integrity with furnace lining, long service life, easy operation, could be shaped freely
4. Product specification: standard form, normal standard, shaped and special shaped bricks.
5. Can be used in various kilns because of its cheapness and general tray package. Among all of the refractory materials, it is the most widely used.
Items | Index | ||||
SK-38 | SK-37 | SK-36 | SK-35 | SK-34 | |
Al2O3 %,≥ | 75 | 65 | 55 | 48 | 42 |
54 | 49 | 44 | 40 | 20 | |
Apparent Porosity, % ≤ | 23 | 23 | 22 | 22 | 26 |
Refractoriness Under Load, °C ≥ | 1520 | 1500 | 1470 | 1420 | 1300 |
Linear Change on Reheating, [1500°C×2h]% | +0.1-0.4 | +0.1-0.4 | +0.1-0.4 | +0.1- 0.4 | 0-0.5 |
Refractoriness, °C ≥ | 1790 | 1790 | 1770 | 1750 | 17 |
Feature:
1.High compression strength.
2.Top high-temperature capability.
3.Excellent thermal stability.
4.Low thermal conductivity.
5.Powerful penetrating-proof capability.
6.Good erosion-resistance.
7.Long service life.
Application:
Refracory brick plant can be in direct contact with the flame,this insulating brick can be used as linings or as thermal preservation layers in various industrial furnaces and kilns in metallurgical industry, ceramic industry, chemical industry, machinery industry.
such as blast furnace, hot blast stoves ,electric arc furnace, cement kiln,melting furnace, ignition furnace, flue, refining equipment, heating equipment and piping, regeneration device, gas furnace, soaking furnace, annealing furnace, heat reaction chamber and other thermal industrial equipment.
FAQ
1. Do you provide samples?
Yes, samples are free. Guarantee samples quality same as mass production quality.
2. What's the MOQ of trial order?
No limit,We can offer the best suggestions and solutions according to your condition.
3. Can we visit your company?
Of course,welcome at any time,seeing is believing.
4. Do you accept OEM?
Yes, we can do OEM.
5. What are the payment terms?
Usually T/T, D/A, D/P, L/C, Western Union ,others could be discussed .
6. How long is delivery time?
The delivery time will be determined according to the quantity of the order.
7. How are your products’ quality?
More than 20 years of production experience. The products will be strictly inspected before shipment, so the quality could be guaranteed.
8. How to slove the quality problems?
If the products are not confirmed to customer samples or have quality problems,our compay will be responsible to make compensation for it.
9. What is the service life of your bricks?
The service life of different bricks is unlike.It also depends on your using condition and method.
10. How about your company's certification?
ISO9001 and Test Report,also we could apply other necessary certification.
11. How about your price?
Quality will be guaranteed. Competitive prices based on same quality.
- Q: Is there a big difference between two high alumina brick and one high alumina brick?
- According to my experience, two kinds of high alumina bricks from the index, there is a big difference between the content of AL2O3, a high aluminum brick in 75%, two grade high alumina bricks in 65%, so the content is not the same, also decided that the use of temperature difference, the difference is very big.
- Q: How are the high alumina bricks fired?
- According to the quality requirements of different grades of high alumina brick, choose different grades of bauxite raw materials, it is conducive to rational use, fine materials, fine distribution, as far as possible not to use mixed grade severe raw materials. The quality of the clinker depends on the calcination temperature, calcination temperature, sintering temperature should be generally reached or slightly higher than that of alumina clinker sintering, to ensure the full and possible high volume density, and the two secondary Mullitization and sintering shrinkage effect in calcination process. Lightweight high alumina brick, also known as high aluminum insulation brick (high-aluminium heat insulating brick). A lightweight refractory consisting of mullite and glass phases or corundum in excess of 48%. The volume density is 0.4 ~ 1.35g/cm3. The porosity is 66% ~ 73%, and the compressive strength is 1 ~ 8MPa. Better thermal shock resistance.
- Q: What are the common thermal insulation materials for thermal conductivity?
- The single organic insulation material should be the best polyurethane in the field. In accordance with the production process can be divided into on-site foam polyurethane and factory prefabricated rigid foam polyurethane board. The scene is polyurethane foam isocyanate and polyol to cool (polyether or polyester) two components as the main raw materials with additives, the on-site spraying construction with thermal insulation and waterproof function of the rigid foam material.
- Q: How to reduce porosity of high alumina brick
- In order to reduce the porosity of high alumina brick, the corresponding measures should be taken from the selection of raw materials, batching, mixing, molding and firing.The water absorption rate of the first grade high alumina bauxite clinker should be less than 5%, and the water absorption rate of two grade high alumina material should be less than 7%. Fine grinding of soft clay and bauxite clinker with less than 4% water content. Mixed fine milling ingredients with this, can reduce the porosity of bricks.
- Q: Corundum, high alumina and fireclay refractory difference is what
- They differ in that the alumina content is different, and the content is in order: corundum > high alumina > clay.
- Q: Are there any differences between insulating bricks and refractory bricks?
- The insulation performance of thermal conductivity of insulating brick in general 0.2-0.4 (average temperature 350 - 25 DEG C) w/m.k, and the thermal conductivity of refractory brick in 1 (the average temperature of 350 - 25 DEG C) above w/m.k, which can obtain the insulation performance of insulating brick than refractory brick insulation performance is much better.
- 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: The difference between clay bricks and clay bricks
- Sintering bricks do not have clay bricks, so sintering bricks are made of stone. Clay brick is clay cooking, two yo, qualitative difference, but the appearance and color almost, but the quality is very different, life expectancy is also a great gap.
- Q: What are the categories of bricks?
- Clay brick materials, cheap, durable, and fire prevention, heat insulation, sound insulation, moisture absorption and other advantages, is widely used in civil engineering. Waste brick can also be used as aggregate of concrete. In order to improve the shortcomings of ordinary clay bricks, such as small, self important and waste of soil, they are developing in the direction of light weight, high strength, hollow and big blocks.
- Q: High alumina brick 80 with which high aluminum cement?
- Which kind should be chosen should be determined according to the conditions of use, life expectancy and cost control. By the way, the quality of masonry is also very influential.
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High Alumina Brick for High Temperature Refractory Applications in Steel and Non-Ferrous Metals Metallurgy
- 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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