Fireclay Brick with High Alumina Content (Al2O3 85-90%)
- Ref Price:
-
- Loading Port:
- Qingdao
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 17 m.t
- Supply Capability:
- 10000 m.t/month
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General Information
CMAX high alumina firebricks are classified according to alumina content ranging from 48% to 90%.
Feature
Low thermal conductivity
Excellent acid and base slagging resistance
High refractoriness
Excellent thermal shock resistance
Excellent mechanical strength
Application
CMAX high alumina bricks are commonly used in blast furnace, hot blast furnace, the roof of electric furnace, teeming ladle, rotary kiln, regenerator, etc
ITEM | UAL48 | UAL55 | UAL65 | UAL75 | UAL80 | UAL85 | ALP80 |
Refractoriness, ℃ | 1750 | 1770 | 1790 | 1790 | 1810 | 1810 | 1810 |
Apparent Porosity,% | 22 | 22 | 23 | 23 | 20 | 20 | 18 |
C.C.S, Mpa | 39 | 44 | 49 | 53 | 55 | 60 | 100 |
Refractories Under Load (0.2Mpa)，℃ | 1420 | 1470 | 1500 | 1520 | 1500 | 1520 | 1550 |
Reheating Linear Change,% | 1450℃x2h 0.1～-0.4 | 1500℃x2h 0.1～-0.4 | 1500℃x2h 0.1～-0.4 | 1500℃x2h 0.1～-0.4 | 1550℃x2h -0.5～+0.5 | 1550℃x2h -0.5～+0.5 | 1550℃x2h -0.5～+0.5 |
Al2O3 Content , % | 48 | 55 | 65 | 75 | 80 | 85 | 82 |
- Q: What's the reason of cracks in refractory bricks?
- If it is made to refractory bricks,dry in the air naturally for 10 days, then put into the drying furnace, which is certainly better than the brick is put to the furnace directly, this is not easy to crack. After all, the moisture of brick will run in the air. See the semi-finished products (not crack is really no crack), but after drying, it has cracks, this is must because moisture runs quickly in a short time. If it cracks after high temperature heat treatment, the reason is very complicated, such as after high temperature burning, temperature decreases too fast, resulting in a large temperature change, then it cracks. Or in the process of high temperature heat treatment, the internal reaction is intense, and generate some volume expanding materials, resulting in cracks and so on. Mullite Petrochemical reaction, spinel reaction and so on, the reactions of a lot of materials are the volume expansion
- Q: what effect does big mortar joints of the boiler refractory brick have on the boiler?
- The ventilation leakage。 Now the larger boilers are generally used refractory pouring material one-time pouring, the arch is easy to collapse . 2, shrinkage and expansion of brick will make the bricks fall. 1, do not use the refractory brick. too large seam will effect the tightness of furnace wall , and the water wall is easy to form dew and be corroded and to leak smoke.
- Q: is it good to use firebricks to preserve the heat of rto furnace? Is there any other good ideas?
- Operating noise is very low, having a very strong chemical stability: The thermal conductivity is lower than 0 at normal temperature, it not only reduced the cost of the project of RTO furnace, but keeps the indoor heat dissipation heat better and reduce noise pollution. the temperature of RTO furnace surface is low after using the ceramic fiber lining to keep the heat, thereby reducing the addition of auxiliary fuel : ceramic fiber has a good thermal shock resistance: The dosage form of HLGX-589 and HLGX-312 ceramic fiber material is shown in figure RTO furnace thermal insulation material. C, good thermal shock resistance, without reserving expansion joints, ensure the lining intact, not easy to be affected by the harsh combustion atmosphere inside the RTO furnace, can deal with the temperature changes caused by periodic replacement of RTO furnace inlet. The furnace is new energy-saving furnace developped recent 30years that used for eliminating harmful exhaust gas caused by steel or paint spraying. it has long service life, high chemical stability, no heat preservation precedent for refractory bricks; B, good heat insulation effect.
- Q: how much is the content of the high alumina of refractory brick?
- linear?change?on?reheating is small and Slag resistance is good, matte smelting, good thermal shock resistance used refractory materials should be resistant to high temperature: In front of the furnace, the temperature can reach 1800, copper blowing. The maximum temperature in the smelting furnace area is on the top, pyro-refining and electrorefining, magnesia chrome brick, magnesia chrome castable, magnesia alumina brick. The commonly used refractory materials is direct-bonded?magnesia-chrome?bricks, which has large volume density. manufacturing technique of copper smelting consists of five parts, Clay brick
- Q: Does circulating fluidized bed boiler's furnace wall use refractory to have thermal insulation?
- Now all use castable refractory, the outer layer is generally pouring refractory castable, the inside layer is a heat insulation castable refractory.
- Q: What are the main raw materials of refractory brick and runner brick?
- Category of refractory , runner brick mainly is clay brick
- Q: What is the best color of refractory brick
- Gules
- Q: What is the difference between the refractory brick and the thermal insulation brick
- Refractory bricks are used in the stove, in order to prevent from burnouting the stove under high temperature. Thermal insulation brick is used for preserving heat, is to heat preservation
- Q: What are the factors that determine the weight of the refractory bricks?
- (5) Under high temperature, the volume is stable, the inner part of brick will produce unrecoverable volume shrinkage or expansion because of the internal transformation. Therefore, masonry inner will produce stress to make the material break and peel off, and the weight of a ton of bricks is determined by the bulk density and quantity, how much is the weight of refractory bricks, refractory bricks should have the ability to resist the damage, the weight of a piece of brick is determined by the bulk density: Refractory bricks are used under high temperature for a long term: Refractory bricks in the use of the process. Cooltech refractory brick used in various high-temperature equipment: The temperature of some parts of metallurgical furnace and other industrial furnace is uneven due to rapid temperature change during operation. (3) good thermal stability: Refractory bricks should not only have a high fusion temperature, no softening deformation and collapse, causing damage to the masonry. (4) strong resistance to slag: Modern metallurgy and the other industrial furnace heating temperature is generally between l000~1800. Refractory bricks should have the performance that is not easy to melt under high temperature. Therefore. Therefore, it is subject to high temperature conditions of physical and chemical corrosion and mechanical damage, the refractory brick must have the ability to resist high temperature chemical corrosion, the volume of refractory brick is required to be stable under high temperature. (2) High-temperature structural strength, chemical corrosion of metal, but also should have been built in the stove brickwork load or other mechanical vibration, often has the high temperature slag, so the refractory materials performance should meet the following requirements: (1) high refractoriness
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Fireclay Brick with High Alumina Content (Al2O3 85-90%)
- Ref Price:
-
- Loading Port:
- Qingdao
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 17 m.t
- Supply Capability:
- 10000 m.t/month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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