Magnesia Hercynite Composite Bricks High Refractoriness
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 5 m.t.
- Supply Capability:
- 200 m.t./month
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Description:
Magnesia Hercynite Composite Bricks High Refractoriness
Brief discription for high aluminium bricks
CMAX Magnesia-Hercynite Composite Bricks are made by using high quality raw materials, optimized size grading, enforced homogenization, high pressure forming and firing with clean fuel.
CMAX Magnesia-Hercynite Composite Bricks are mainly used in burning zone, transitional zone of rotary kiln etc.
Advantage for magnesia hercynite composite bricks
◆High refractoriness under load
◆High mechanical strength
◆Excellent thermal shock resistance
◆Corrosion resistance
Technical data for magnesia hercynite composite bricks
ITEM | MA-85A | MA-85B | MA-85C | MA-93A | MA-93B |
MgO,% ≥ | 85 | 82 | 80 | 93 | 90 |
Al2O3,% ≥ | 8 | 8 | 8 | 5 | 5 |
SiO2,% ≤ | 1 | 2 | 3 | 1 | 2 |
Apparent Porosity,% ≤ | 18 | 18 | 19 | 18 | 18 |
Bulk Density, g/cm3 ≥ | 2.95 | 2.9 | 2.85 | 2.95 | 2.9 |
Cold Crushing Strength, Mpa ≥ | 50 | 45 | 40 | 45 | 40 |
Refractoriness Under Load, ℃ ≥ | 1700 | 1700 | 1650 | 1700 | 1700 |
Thermal Shock Resistance< 950℃-Air Quenching, Cycle, ≥ | 120 | 100 | 100 | 100 | 80 |
Thermal Expansion, 1400℃, % | 1.2 | 1.2 | 1.2 | 1.5 | 1.5 |
Images/photographs for magnesia hercynite composite bricks
◆ Packaging for magnesia hercynite composite bricks
◆ Producing Equipment for magnesia hercynite composite bricks
◆ Testing Mashines for magnesia hercynite composite bricks
FAQ
Q1:Are you a manufacture or trader?
A:Factory+trade(mainly factories,at the same time,we operates other related products).
Q2:Can we visit your factory?
A:Sure,welcome at any time,seeing is believing.
Q3:What's the MOQ of trial order?
A:No limit,We can offer the best suggestions and solutions according to your condition.
Q4:Which payment terms can you accept?
A:T/T,L/C are available for us.
Q5:After an order is confirmed,when to deliver?
A:15-25days after deposit.
Q6:Is your company accept customization?
A:We have own factory and excellent technical team,and we accept OEM service.
Q7:How about your company's certification?
A:ISO9001 and Test Report,also we could apply other necessary certification.
Q8: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.
Q9:Can you offers samples?
A:Of coures,samples are free but freight paid by the buyers.
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.
If you have any enquiry,please don't hesitate to contact us,we will provide our best products and services for you!!
- Q:What are the uses of magnesia spinel brick in the industry?
- Used to make ladle casting material, greatly improve the corrosion resistance of steel lining. It is widely used in steel making refractory. The preparation of high-quality pre synthesized spinel provides a new raw material for the production of unshaped and unshaped high purity refractories
- Q:Spinel compound brick composite layer pollution layer does not affect the use of theoretical basis for it
- The chemical composition of magnesia spinel brick has an important effect on the performance of. The suitable chemical compositions of spinel are 8%~20%, cao0.5%~1.0%, fe2o30.2%~8%, sio2<0.4%, B2O3 and alkali. The impurity content is less than 0.3%, and the rest is mgo. When the Al2O3 content is less than 8%, less content of spinel crystals, intergranular directly binding to periclase and periclase magnesia brick, showing the shortcomings, namely spalling resistance difference. When the content of Al2O3 is more than 20%, the corrosion resistance of brick decreases. When cao<0.5%, fe2o3<0.2%, spinel mineral crystal is less than 5mm or more hours, almost as crystal direct binding between periclase and periclase, which shows the disadvantages of magnesia brick. With the increase of the content of Cao and Fe2O3, the liquid phase formed by the low melting point of cao-al2o3-fe2o3 system is formed, which makes the spinel crystal grow up and the anti flaking property produced by the spinel crystal can be exploited. But when cao>1%, fe2o3>0.8%, cao-al2o3-fe2o3 system low melting point liquid phase increased spinel crystal size is more than 20mm, because cao-al2o3-fe2o3 system low melting material increased the thermal strength decreased. When the content of SiO2 is more than 0.4% and the content of impurities such as B2O3 and base is more than 0.3%, more low melting substance is produced, and the thermal strength of the brick decreases. The content of Al2O3 in the range of 8%~20%, the microstructure can be observed on spinel mineral evenly distributed in the periclase spinel mineral, the crystal size is about 5~20mm, the better comprehensive performance of brick.
- Q:What is the significance of the synthesis of mg Al spinel? What are the main approaches?
- The spinel has high hardness, chemical stability, high melting point and good properties, high temperature resistance in various melt erosion is very strong, so the orebody in spinel, improve the high-temperature performance of the product. Although the spinel has the above properties, the natural magnesium aluminum spinel is very few and can not meet the needs. Therefore, the synthetic method is usually used in modern times.
- Q:What's the difference between iron spinel and magnesium aluminum spinel?
- Spinel is a mineral of magnesium aluminum oxide, because it contains elements such as magnesium, iron, zinc, manganese and so on
- Q:Is magnesium spinel harmful to the body? Such as title magnesium spinel, harmful to the body?
- Extremely harmful! Studies have shown that brain tissue has affinity for aluminum, and excessive deposition of aluminum in brain tissue can cause memory loss, mental retardation, slow action and aging.
- Q:What is the high-grade magnesia spinel brick?
- Using magnesia as main raw materials, matrix co milling with magnesia and bauxite as alkaline products, high temperature burning, called magnesia brick, also called the first generation of periclase spinel brick.
- Q:What are the characteristics of Mg rich spinel and aluminium rich spinel?
- Occurs in the contact metamorphic zone of acid intrusive rocks and dolomite and dolomitic limestone, and is associated with forsterite, diopside and so on. It is also found in peridotite, Kimberley rock, magnesian porphyry and some crystalline schist.
- Q:The difference between aluminium refractory and magnesia refractory
- Aluminum refractory belongs to neutral refractory material, usually refers to silicon aluminum refractory materials, such as: high alumina brick, clay brick, high alumina castable and other products, the production of raw materials is mainly bauxite.
- Q:Spinel refractory brick air-cooled razheng times
- Magnesium Oxide reacts with alumina at over 1700 degrees to produce spinel.
- Q:What is the structure of magnesium aluminate spinel?
- The crystal is composed of eight faces, eight bodies and twelve faces of diamond
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Magnesia Hercynite Composite Bricks High Refractoriness
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 5 m.t.
- Supply Capability:
- 200 m.t./month
OKorder Service Pledge
OKorder Financial Service
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