Alumina

High hardness
It has been determined that the Rockwell hardness of alumina is HRA80-90, and the hardness is only inferior to that of diamond, far exceeding the wear resistance of wear-resistant steel and stainless steel.

Excellent wear resistance
The alumina material has been measured by the Institute of Powder Metallurgy of Central South University of Technology, and its wear resistance is 266 times that of manganese steel and 171.5 times that of high-chromium cast iron. According to our customer follow-up survey for more than ten years, it can prolong the service life of equipment by at least ten times under the same working conditions.

Light weight
The density of alumina material is 3.7~3.95g/cm³, which is only half of that of steel, which can greatly reduce the load of equipment.

Wide range of application
Alumina are widely used in machinery, optical fibers, cutting tools, medical, food, chemical, aerospace and other industries. 

High Surface Area And Porosity
The Alumina oxide material has a large surface area and high porosity levels, making it a highly adsorptive material to be used for the separation of alkaloids. This physical property of the material is very important for the successful alkaloid separation process, as it allows the alkaloid compounds to trap onto the surface and get adsorbed in the material which allows for proper separation technique and results.

Chemically Inert
The Alumina oxide material is chemically inert in nature and can withstand harsh and unfavorable environments during the separation of alkaloids. It can stay stable even in extreme conditions, and this stability is essential for maintaining the integrity and stability of the alkaloid compounds during separation, avoiding unwanted chemical reactions, alterations in any chemical compositions and structure, and preserving the purity of the separated substances.

High Thermal Stability
The high thermal stability properties of the Alumina oxide material helps it withstand varying and high temperatures and pressure conditions efficiently without damaging its structure or effective adsorbent properties. This property is important in industrial processes that involve high temperatures, as it ensures consistent and reliable performance in a variety of conditions.

Selective Adsorption Properties
This is one of the most important properties of Alumina oxide for the separation of alkaloids. The selective adsorption properties of the material allow for compounds of the different alkaloids to be separated according to their affinity and polarity towards the material. This helps for high-precision separation of the alkaloids from the mixture and their purity levels also improve leading to high quality separation of alkaloids.

Well Defined Pore Size
The aluminum oxide material has a well defined and structured pore size and shape that helps adsorb and desorb in a structured way, which helps alumina oxide to be effective in separation processes and allows for accurate adsorption. It is also a versatile and adaptable material for use in a wide range of alkaloids.

High Mechanical Strength
Alumina oxide has high mechanical strength, which allows it to withstand high pressure and high physical stress during processing and application. The mechanical strength of alumina oxide plays an important role in maintaining the efficacy of the material during the separation process and ensures its reliability and uniformity for industrial applications and techniques such as chromatography that are suitable for use in the separation of alkaloids.

High Durability And Wear & Tear Resistance
The material has high durability and strength that contributes to its use as an abrasive in various industries as well as applications. Alumina oxide is used in the ceramics industry for its wear & tear resistance, acid and alkali resistance, high strength, stiffness, and good thermal conductivity making it a versatile material for the separation of alkaloids.

Abrasives
Alumina is widely used in a variety of industrial abrasive materials, owing to its superior hardness and strength. Similarly, alumina can be used as a coating to protect against abrasion.

Refractories
Alumina is also widely used in refractory products, due to its high melting point. It is especially suited to demanding applications where the strength of the refractory must be retained at high temperatures.

Glass
Alumina is often used in the production of glass products, lending improved strength; it has even been studied for its potential in creating an unbreakable glass.

Engineered Ceramics
Alumina is also widely used in engineered ceramics, also called advanced or technical ceramics. These engineered ceramic materials are formulated for especially harsh applications that require increased wear resistance, thermal and chemical stability, and many of the other characteristics alumina possesses. Engineered ceramics have applications in industries from chemical and medical, to industrial, electrical, and more.

Reaction with Sodium Hydroxide
The reaction of alumina with sodium hydroxide results in the production of sodium aluminate (salt) and water. This reaction occurs at temperatures between 900-1100°C. Here, aluminium oxide acts as an acid.

Al2O3 + 2NaOH → 2NaAlO2 + H2O

Reaction with Hydrochloric Acid
Alumina reacts with heated dilute hydrochloric acid to produce an aluminium chloride solution. In this case, alumina, since it contains oxide ions, reacts with acids in the same way magnesium or sodium oxides do.

Al2O3 + 6HCl → 2AlCl3+ 3H2O

Reaction with Sulphuric Acid
One of the properties of aluminium oxide is that it is an amphoteric oxide. What it means is that it can act both as an acid and base. Interestingly, during its reaction with sulphuric acid, alumina acts as a base. This is basically a form of a neutralization reaction.

Al2O3 + H2SO4 → Al2(SO4)3 + H2O

Bayer Process
Bayer process is the most widely used method of producing alumina. , it involves the following steps:Bauxite ore is first crushed and mixed with sodium hydroxide to form a slurry.The slurry is then heated under pressure to dissolve alumina content, leaving behind impurities.
Precipitation: The alumina is then precipitated out of the solution and calcined to remove any remaining moisture.

Sintering
Sintering is a process of compacting and forming a solid mass of material using heat or pressure without melting it. In the preparation of alumina, sintering involves:Mixing alumina powder with additives such as binders and lubricants.The mixture is then pressed into a mold and heated in a furnace.The heat causes the powder to fuse together, forming a solid mass.The advantage of sintering is that it allows for the production of complex shapes and can be used to create porous or dense materials.

Hydrothermal Synthesis
Hydrothermal synthesis is a method of making alumina by reacting aluminum hydroxide (Al(OH)3) with water at high temperatures and pressures. Here is the manufacturing process.Mix aluminum hydroxide with water in a sealed container to create a slurry. The water acts as a solvent and is necessary for the hydrothermal reaction to occur.The mixture is then heated to high temperatures and pressures, causing the reaction to start. The chemical equation for this reaction is 2Al(OH)3 → Al2O3 + 3H2O.Hydrothermal synthesis is beneficial since it can produce high-purity, nano-sized alumina particles with specific shapes and sizes.

Sol-gel Process
The Sol-Gel process involves converting a liquid solution into a solid gel, which is then calcined to form alumina. The process involves:Mixing aluminum alkoxide with a solvent to form a sol.
Bonding: The sol is then aged to allow the particles to bond together, forming a gel.The gel is then calcined at high temperatures to form alumina.The Sol-Gel process offers several benefits because it can produce high-purity, homogeneous alumina with specific properties, such as a high surface area and pore size.

Beijing FreeRun Technology Co.,Ltd. was established in 2020. It is located in Shandong Province, an important industrial province in China and one of China's rare earth mineral production areas. Its main products are polishing powder/liquid in semiconductors, optics and other fields, as well as nano rare earths and anhydrous rare earths. , the company integrates rare earth R&D, production and sales.The company's products include high-purity nano rare earth oxides, rare earth polishing powders, precision polishing fluids, rare earth compounds, anhydrous rare earth and other new rare earth materials. The company will provide high-quality products and services in the fields of semiconductor CMP, semiconductor ceramics, aerospace power systems, military guidance, electric vehicles, new energy, petroleum fission, grinding/precision polishing, pharmaceutical chemicals, electronic materials and other fields.