Refractories For RH Refining Furnace Magnesium-Aluminate Spinel Unburned Brick And Snorkels

Supplier:
Ruitai Ma Steel New Materials & Technology Co., Ltd.
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Loading Port:
Shanghai
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TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
1000 m.t./month
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Product Description:

Refractories for RH refiniing furuace 

Our company has chrome-free refractories integration technology for RH reflning furnace . We can provide customers whole service Iife solutions including overall design , optimal configuration , comprehensive masonry,on-site maintenance , and used refractories recovery and disposal . As the main drafter of T/ACR10003-2017 Periclase-spinel bricks for RH refining furnace ( a group standard of The Association of China Refractories Industry ), our company develops the series magnesium-aluminate spinel unburned bricks for RH refining furnace , which have been appraised as the green and environment friendly products by the expert committee of The Association of China Refractories Industry. The products are featured with high production efficiency, energy saving, environmental protection, superior performance, long service life and so on. Tested by Hubei Refractory Product Quality Supervision and Inspection Station, the product meets the requirements of Q/MGN 007-2018 standard. The products play an exemplary role in the green development of refractories, and reach the international advanced level.


1Magnesium-aluminate spinel nuburned brick

The magnesium-aluminate spinel unburned bricks are prepared using high quality fused magnesite as main raw material, adding special additives, high pressure shaping and low temperature heat treatment. The bricks are featured with good thermal shock resistance, good corrosion and erosion resistance. Products with different brands are suitable for different service areas.




Physical properties and chemical composition of Magnesium-aluminate spinel unburned brick



2Snorkels

The RH refining furnace snorkels are comprehensively lined using MA95 magnesia spinel bricks and high quality corundum spinel castables. The circulation tubes are assembled using MA95 magnesia spinel bricks. The products are featured with good corrosion and erosion resistance, and thermal shock resistance.








Physical properties and chemical composition of Snorkels

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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
Magnesia refractory belongs to alkaline refractory materials refers to refractory products such as magnesia magnesia brick magnesium iron spinel magnesium aluminum spinel magnesia ramming materials and other products of raw materials is the main crystal phase is periclase magnesia products
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
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: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'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: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
Magnesium Oxide reacts with alumina at over 1700 degrees to produce spinel.
Q:What is the structure of magnesium aluminate spinel?
Mg Al spinel is a six square dense stack of equiaxed crystals

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