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Delivery time is fast and clear, we will send customers some photos of order bags Mark, productions status, as well as goods are loaded into containers.
Zhengzhou mayjoy abrasives co., ltd mayjoy abrasives has been in the field of fused aluminum oxide over 20years, in the beginning, the director Mr. Feng only has 1 production line, it was hard. But after these years effort, he has more than 5 lines with two plants, and also set up a very professional exporting sales team since 2013, now working with America, South America, Southeast Asia, Europe, etc more than 30 countries.
Tabular corundum refers to the crystal form of the mineral corundum, also known as aluminum oxide. It is characterized by flat, plate-like crystals with a distinct hexagonal or trigonal shape. The edges and faces of tabular corundum crystals are usually sharp and well-defined, giving the mineral a distinctive appearance.Tabular corundum is relatively rare and is predominantly found in certain types of metamorphic and igneous rocks such as mica schist and basalt. It is also mined commercially as a source of abrasive materials, as its hardness and toughness make it ideal for cutting and grinding applications.
What are the Applications of Tabular Corundum
Refractory industry
Used as a high-grade refractory material in the steel, cement, glass, and ceramic industries, to withstand high temperatures and harsh chemical environments.
Foundry industry
Used as a molding material for foundry processes, especially for molding and core-making.
Electrical industry
Used as an insulating material in high-temperature applications and electrical components.
Abrasives industry
Used as a cutting and grinding material for metal, glass, and ceramics.
Chemical industry
Used as a catalyst support material and as a lining material for chemical reactors due to its high chemical stability and resistance.
Construction industry
Used as a flooring material, especially in areas with high abrasion and impact resistance requirements.
Tabular corundum typically consists of alumina (Al2O3) as the main ingredient, and may also contain small amounts of trace elements such as iron, titanium, and chromium. It is a form of synthetic or manufactured corundum, and is distinguished by its tabular or plate-like crystal structure. Tabular corundum is used in a variety of applications, including refractory materials, abrasives, ceramics, and electronics.
Production Process of STabular Corundum
Raw material selection
High-quality bauxite and alumina are selected as the raw materials for the production of tabular corundum.
Crushing and screening
The raw materials are crushed and screened to remove impurities and ensure uniform particle size.
Calcination
The raw materials are calcined at high temperatures to transform them into alpha alumina. The calcination process removes any remaining impurities and improves the chemical purity of the raw materials.
Milling
The alpha alumina is milled into a fine powder.
Shaping
The fine powder is blended with a binder and shaped into the desired size and shape using a pressing machine.
Drying
The shaped particles are dried to remove any moisture.
Firing
The shaped particles are fired at high temperatures in a furnace to sinter them together and form tabular corundum.
Cooling
The tabular corundum is then cooled slowly to room temperature to prevent cracking or deformation.
High purity
Tabular corundum is made by melting high-purity alumina in electric arc furnaces, resulting in a purity of up to 99.99%.
High density
The density of tabular corundum is typically greater than 3.9 g/cm3, making it a very dense and heavy material.
High mechanical strength
Tabular corundum has high mechanical strength and is extremely hard, making it a popular material for use in high-temperature, high-stress applications.
Good thermal shock resistance
The strong and stable crystal structure of tabular corundum gives it good thermal shock resistance, meaning it can withstand sudden changes in temperature without cracking or breaking.
Excellent chemical stability
Tabular corundum is highly resistant to chemical attack from acids, alkalis, and other corrosive substances.
High melting point
The melting point of tabular corundum is around 2050°C, making it useful in high-temperature applications.
Good electrical insulation properties
Tabular corundum is an excellent electrical insulator, thanks to its high purity and low porosity.
What is Calcined Alumina Powder
Calcined Alumina Powder is a material which has been subjected to high temperatures (above 1000°C) to remove water and volatile organic compounds from it. This process results in a product that is highly pure, dense, and has a fine particle size. Calcined Alumina Powder is used in various applications, including ceramics, refractories, abrasives, polishing compounds, and surface finishing agents. The properties of Calcined Alumina Powder are high hardness, high chemical purity, high electrical insulation, high thermal conductivity, and resistance to wear and corrosion.
What are the Applications of Calcined Alumina Powder
Advanced Ceramics
Calcined alumina powder is extensively used in the production of advanced ceramics like electronic ceramics, wear-resistant ceramics, high-temperature ceramics, and bioceramics. The powder is used as a raw material for manufacturing ceramic products that require superior mechanical strength, high thermal conductivity, corrosion resistance, and stability at high temperatures.
Refractories
Calcined alumina powder is used as a raw material in refractory manufacturing, specifically for producing refractory bricks and castables. These refractories are used for high-temperature applications in industries like steel, cement, and glass.
Polishing Compounds
The fine powder is used in the manufacturing of polishing compounds, commonly used in the semiconductor, optical, and precision engineering industries. The abrasive nature of calcined alumina helps achieve a high-quality finish on metal and ceramic surfaces.
Coatings
Calcined alumina powder is also used as a coating material for various purposes like anti-corrosion coatings, thermal barrier coatings, and protective coatings in the aerospace and automotive industries.
Chemicals
Calcined alumina powder is used in the manufacturing of various chemicals, including catalysts, adsorbents, and pigments. It is also used as a raw material in the production of flame-retardant materials.
Paper and Paint
Calcined alumina powder is used as a filler in the manufacturing of paper and paint products. It helps improve the quality of the paper and provides desirable properties such as smoothness, whiteness, and brightness to the finished product.
Calcined alumina powder is made up of aluminum oxide (Al2O3) that has been heated to a high temperature to remove any water content or impurities. The powder typically has a white or grayish color and a very fine particle size. There are no additional ingredients in calcined alumina powder, as it is a pure form of aluminum oxide.
Bauxite Mining
The first step is to mine raw bauxite, which is a mineral containing aluminum oxide.
Calcination
The mined bauxite is subjected to high-temperature calcination at around 1000 degrees Celsius in a rotary kiln. During this process, the bauxite loses its crystalline water and forms alumina.
Milling
The calcined alumina is then milled to fine powder form. The milling process grinds the alumina particles to the desired size, shape, and distribution.
Classification
After milling, the alumina powder is classified to remove any oversized or undersized particles. The classification process ensures that the powder has consistent particle size and shape.
Drying
The classified alumina powder is then dried to remove any remaining moisture content.
Quality control
Finally, the produced alumina powder undergoes rigorous quality control tests. The tests check for impurities, particle size distribution, and chemical composition to ensure that it meets the set industry standards.
Characteristics of Calcined Alumina Powder
High purity
Calcined alumina powder has a high degree of purity, typically above 99% aluminum oxide, making it an excellent choice for applications that require high chemical resistance and refractoriness.
High stability
Calcined alumina has excellent thermal stability and can maintain its properties even at high temperatures up to 2000°C.
High hardness
Calcined alumina is a hard and durable material with a Mohs hardness of 9, making it suitable for applications that require abrasion resistance and wear resistance.
Excellent electrical insulation
Calcined alumina has good electrical insulation properties, making it an excellent choice for insulating materials used in electrical equipment and high-temperature environments.
Good chemical stability
Calcined alumina is highly resistant to chemical attack by acids, alkalis, and many organic solvents, making it suitable for use in chemical and pharmaceutical applications.
Low impurity content
Calcined alumina powder has a low impurity content, which makes it an ideal choice for applications that require high purity, such as electronics, ceramics, and refractory materials.
Good dispersibility
Calcined alumina powder has good dispersibility, which allows it to be easily incorporated into various matrices, such as polymers, metals, and ceramics.
Tabular Corundum Powder is a highly pure and fine-grained form of aluminum oxide mineral with a flat and tabular crystal structure. It has high hardness, high mechanical strength, and excellent wear resistance, making it an ideal material for various industrial applications such as refractories, abrasives, and ceramics. Tabular corundum powder is produced by crushing and milling high-purity bauxite or synthetic alumina followed by advanced processing techniques to create uniform particle size and excellent chemical purity. It is commonly used as a raw material in the production of high-quality refractory products, including shaped and monolithic refractories.
What are the Applications of Tabular Corundum Powder
Refractory ceramics
Tabular corundum powder is used as a raw material in the production of high-performance ceramic materials, such as refractory ceramics. These materials are able to withstand extremely high temperatures and are used in applications such as furnace linings, kiln shelves, and crucibles.
Abrasives
Tabular corundum powder is also used as an abrasive material, particularly in the production of grinding wheels and other abrasive tools. It is prized for its high density and hardness, which make it ideal for use in applications where a fine, precise finish is required.
Advanced ceramics
Tabular corundum powder is used in the production of advanced ceramics, such as electronic ceramics and ceramic armor. These materials are used in a range of applications, from electronic components to body armor for military and law enforcement personnel.
Foundry coatings
Tabular corundum powder is used as a component in foundry coatings, which are applied to the surface of metal castings to improve the quality of the casting and prevent defects. The high density and chemical stability of tabular corundum make it an ideal component for these coatings.
Refractory concrete
Tabular corundum powder is used in the production of refractory concrete, which is a type of concrete that is able to withstand extremely high temperatures and is used in furnace linings and other high-temperature applications.
Tabular Corundum Powder Ingredients
Tabular corundum powder is widely used in the production of refractory materials, ceramics, and abrasive products because of its superior hardness, wear resistance, and thermal shock resistance.
The ingredients of tabular corundum powder typically include:
Aluminum oxide (Al2O3)
The primary component of corundum, which gives it its exceptional hardness and durability.
Trace elements
Small amounts of impurities or dopants, which can include titanium oxide (TiO2), iron oxide (Fe2O3), silicon oxide (SiO2), and magnesium oxide (MgO). These impurities can affect the material's physical and chemical properties, such as its color, refractive index, and mechanical strength.
Binders
Some manufacturers may add binders or other additives to the powder to improve its flowability, reduce dust generation, or enhance its bonding properties with other materials.
Production Process of Tabular Corundum Powder
Selection of raw materials
The first step in the production process is to select high-quality raw materials such as bauxite, alumina, and other materials with a high alumina content. The raw materials should be of high purity and free from impurities that could affect the quality of the final product.
Crushing
The selected raw materials are then crushed into small pieces using crushers. The aim of this process is to reduce the size of the raw materials for easy handling and processing.
Milling
The crushed raw materials are then ground into a fine powder using ball mills or other grinding equipment. The size of the powder is controlled to ensure consistency in the final product.
Grading
The milled powder is then graded to eliminate oversized particles and ensure a uniform particle size distribution. The powder is sieved using a vibrating screen or other grading equipment.
Calcining
The graded powder is then heated to high temperatures in a calcination furnace. The temperature and duration of the calcination process vary depending on the desired properties of the final product.
Packaging
The final product is then packaged in bags or containers for easy transport and storage.
Characteristics of Tabular Corundum Powder
High Purity: Tabular corundum powder has a high level of purity, which enables it to be used in various high-tech applications, such as ceramic materials and electronics.
Exceptional Hardness: Tabular corundum powder is extremely hard and can be used as an abrasive material for grinding and polishing various types of materials.
Tabular Shape: The unique tabular shape of tabular corundum powder provides excellent particle packing and low porosity, which makes it ideal for use in the manufacture of high-performance products.
High Thermal Stability: Tabular corundum powder has excellent thermal stability, making it suitable for use in high-temperature applications such as refractories and metal ceramics.
Chemical Resistance: Tabular corundum powder is highly resistant to chemical reactions, making it ideal for use in acid and alkali environments.
Excellent Wear Resistance: Due to its high hardness, tabular corundum powder has excellent wear resistance and can be used in applications that require high durability and resistance to wear and tear.
Good Electrical Insulation: The high purity and unique tabular shape of tabular corundum powder provide excellent electrical insulation properties, making it suitable for use in various electronic applications.
Our Factory
Zhengzhou mayjoy abrasives co., ltd mayjoy abrasives has been in the field of fused aluminum oxide over 20years, in the beginning, the director Mr. Feng only has 1 production line, it was hard. But after these years effort, he has more than 5 lines with two plants, and also set up a very professional exporting sales team since 2013, now working with America, South America, Southeast Asia, Europe, etc more than 30 countries.
FAQ
Q: What is Tabular Corundum?
Q: What are the common properties of Tabular Corundum?
Q: What are the applications of Tabular Corundum?
Q: How is Tabular Corundum produced?
Q: What are the advantages of using Tabular Corundum?
Q: What is the difference between Tabular Corundum and other types of corundum?
Q: Is Tabular Corundum hazardous to health?
Q: What is calcined alumina powder?
Q: How is calcined alumina powder made?
Q: What are the advantages of using calcined alumina powder?
Q: What are the applications of calcined alumina powder?
Q: What are the different types of calcined alumina powder?
Q: What is the purity of calcined alumina powder?
Q: How is calcined alumina powder packaged?
Q: Can calcined alumina powder be hazardous?
Q: What are the different grades of Tabular Corundum?
Q: How is Tabular Corundum made?
Q: What are the properties of Tabular Corundum?
Q: What are the applications of Tabular Corundum?
Q: What are the advantages of Tabular Corundum over other refractory materials?