Magnesite Alumina Spinel Brick (Magnesia-MA Spinel Brick)

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CMAX Magnesia-MA Spinel Bricks are made by using high quality raw materials, optimized size grading, enforced homogenization, high pressure forming and firing with clean fuel.

Refractory bricks

Index Product		AZS-41	AZS-36	AZS-33
ZrO2(%)≥		40	35	32
SiO2 (%)≤		12.5	14	14
Na2O≤		1.2	1.8	1.4
Fe2O3≤		0.15	0.15	0.15
TiO2≤		0.10	0.10	0.10
B.D. (g/cm3) ≥		4.12	3.98	3.84
C.C.S (Mpa) ≥		350	350	350
Linear Thermal Expansion (%)	At 1000°C	0.80	0.80	0.80
Linear Thermal Expansion (%)	At 1500°C	0.80	0.80	0.80
Thermal Conductivity	At 600°C	3.3	3.4	3.2
Thermal Conductivity	At 1500°C	3.5	3.6	3.5
Electrical Resistance	At 1000°C	400	200	240
Electrical Resistance	At 1500°C	90	55	65
Glass Phase Exudation(%)1500°C*16hr		≤2	≤3	≤3

Q: What are the uses of magnesia spinel brick in the industry?: Instead of magnesia chrome brick sand manufacturing magnesia spinel brick used in cement kiln, not only to avoid the chrome pollution, but also has good resistance to spalling;

Q: What is the primary crystal phase? What is the secondary phase?: There are structure of refractory refractory material in the crystal phase, especially the direct combination of high melting point and so on, the resistance to high temperature also tend to benefit. Compared with the ordinary brick, the second phase of the refractory products, make the products refractoriness under load are improved. Many according to mineral composition of refractory material named, such as mullite corundum brick, corundum mullite brick, is its main crystal phase and the second phase composite named. The former is mainly crystal phase, the latter is sub crystalline phase.

Q: Spinel refractory brick air-cooled razheng times: The components of magnesia alumina spinel refractories can be magnesia alumina spinel, excessive alumina, or magnesium aluminate spinel with excessive amount of Magnesium Oxide.

Q: Is magnesium spinel harmful to the body? Such as title magnesium spinel, harmful to the body?: Hospital tests revealed that Alzheimer's patients had more than 5~30 times more aluminum in brain tissue than normal subjects. When the aluminum content in the human body exceeds 5~10 times that of normal people, it can inhibit the absorption of phosphorus by the digestive tract, reduce the level of serum inorganic phosphorus, cause osteomalacia and joint pain. Aluminum chloride and aluminum hydroxide, aluminum alkyl and salt and other drugs, the short term can produce toxic side effects.

Q: What's the difference between iron spinel and magnesium aluminum spinel?: Such as aluminum spinel, iron spinel, zinc spinel, manganese spinel, chromium spinel, etc.. Due to the inclusion of different elements, different spinel can have different colors, such as magnesium spinel in red, blue, green, brown or colorless between; zinc spinel is dark green; iron spinel black, and so on.

Q: Spinel compound brick composite layer pollution layer does not affect the use of theoretical basis for it: One is the development of the manufacturing process of the magnesia magnesia purity can be improved, with low content of magnesia silicate phase has good resistance to spalling, does not require the addition of alumina can also produce good thermal shock stability is of high quality magnesia brick; two foreign chromite resources is abundant, magnesia chrome refractories production has thermal stability good and anti erosion ability.

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 is the structure of magnesium aluminate spinel?: The crystal is composed of eight faces, eight bodies and twelve faces of diamond

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: Characteristics of sintered spinel used in refractory zzjsnc: For the production of castable for ladle lining steel plate greatly improve the anti erosion ability. It is widely used in steelmaking refractories provides new raw material for the production of high quality synthetic stone pre sintered spinel prepared amorphous and amorphous high purity refractory material

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