Brown Fused Alumina
Advantages Of Fused Alumina
Unique Hardness And Versatility Of Fused Alumina
Its exceptional hardness ensures excellent performance in both dry and wet blasting and grinding. The high melting temperature makes fused alumina the ideal choice for applications requiring extreme durability and long-term resilience.
Indispensable In Industrial Surface Processing
Fused alumina is key for processing surfaces of stainless steel, non-ferrous metals, aluminum, and for frosting and decorating glass. Its extensive use in the production of abrasive tools, refractory materials, fine ceramics, and electro-ceramics confirms its versatility and indispensable value in the industry.
Multi-Purpose Abrasive For Sustainable Development
One of the greatest advantages of fused alumina is its reusability. It enhances grinding efficiency, minimizes production waste, and reduces operating costs, contributing to sustainable development.
Wide Range Of Applications
Fused alumina finds applications in many areas, from the production of abrasive tools to high-alumina refractory materials, precise casting, and prosthetics. Noble fused alumina is popular in ceramic-bonded abrasive products due to its properties that allow for cool and fast cutting, essential for many industrial processes.
Application of Fused Alumina
Refractories
Fused alumina is also used in the production of refractory products, which are materials that can withstand high temperatures and harsh environments without degrading. Fused alumina' s high melting point and thermal stability make it an ideal material for use in refractories such as kiln linings, furnace linings, and crucibles.
Ceramics
Fused alumina is used in the production of advanced ceramics due to its high purity, high strength, and excellent thermal and electrical properties. It' s often used in ceramic components for electronic devices, such as substrates, insulators, and circuit boards.
Surface Preparation
Fused alumina is used for surface preparation in industries such as metalworking, construction, and shipbuilding. It' s commonly used for sandblasting and shot peening, which are processes that remove surface contaminants and create a roughened surface for better adhesion of coatings or paint.
Abrasives
Fused alumina is widely used as an abrasive material due to its high hardness, toughness, and thermal stability. It' s commonly used in grinding and polishing applications, as well as for abrasive blasting in industries such as construction, automotive, and aerospace.
Water Filtration
Fused alumina can be used as a filter media in water treatment applications, due to its high porosity and ability to remove contaminants such as heavy metals and organic compounds.
Other Applications
Fused alumina is also used in a variety of other applications, such as in the production of catalysts, cutting tools, and welding electrodes.
Properties of Fused Alumina
High Purity
Typically contains over 99% Al2O3, resulting in excellent performance in various applications.
Hardness
It is very hard (Mohs hardness of around 9), making it effective for abrasive applications.
Low Iron Content
Its low iron content makes it suitable for applications where contamination is a concern.
High Melting Point
With a melting point above 2000°C, it can withstand high temperatures.
Fused Alumina Production Process
Fused alumina powder is a commonly used material in the fields of grinding, polishing, and wear-resistant fillers. The quality of corundum powder directly affects the grinding effect or the function of wear-resistant products. Fused alumina has small particles. It's difficult to judge its quality from its appearance. The materials and processing methods used directly affect the performance of wfa powder.
The raw materials for producing fused alumina powder should be fine powder made by grinding first grade blocks. The first level fixed furnace fused alumina block is more excellent.
Natural precipitation is used to completely precipitate the powder suspension and remove moisture. Then, it is dried in a high-temperature kiln to control residual moisture. Finally, sieve and loosen the white corundum powder to maintain its looseness and prevent agglomeration.
The production of fused alumina powder May seems simple. Strictly control methods is helpful for the production of high standard grinding tools and ceramic products.
Precautions for Handling and Storing Fused Alumina
Fused alumina is an important material used in many industries including abrasives, refractories, and ceramics. It is highly valued for its hardness and durability, making it a popular choice for many applications. In order to ensure that the material is properly handled and stored, there are some important considerations to keep in mind.
First, fused alumina should be kept in a dry, cool, and dust-free environment. Moisture and temperature changes can cause the material to degrade over time, so it is important to store it in a place with consistent conditions. Additionally, dust and other contaminants should be avoided as these can interfere with the material's performance.
Second, fused alumina should be handled with care. It is a very hard material and can easily cause cuts and abrasions if handled improperly. It is best to use protective gloves and clothing when handling the material. Additionally, it is important to avoid direct contact with skin and eyes.
Third, it is important to store fused alumina in an appropriate container. The material should be kept in a sealed, airtight container to protect it from moisture and dust. Additionally, the container should be stored in an area where it will not be exposed.
FAQ
Q: What is the difference between calcined alumina and fused alumina?
A: The two characteristics of calcined alumina that distinguish it from fused aluminum oxide grains are shape and purity. Calcined alumina grains are normally composed of single platey crystals, whereas fused aluminum oxide grains tend to be fractions of large crystals and blocky in shape.
Q: Why is fused alumina reduced to aluminium?
A: Because alumina has a great affinity for oxygen and it will become aluminium oxide which is a very stable compound. So,electrolytic reduction is done beacause it will not easily reduced by common reducing agent like hydrogen,carbon or carbon monoxide etc.
Q: What is the difference between fused alumina and tabular alumina?
A: The impurity content of ta is low and evenly distributed, and the impurity content of fa is high and unevenly distributed. Ta takes high-purity industrial alumina as raw material,no additives are added in the production process.
Q: What is the hardness of fused alumina?
A: Fused aluminum oxides show a value of 9 on the mohs scale of hardness close to diamond (mohs 10), the hardest known substance.
Q: What is the melting point of fused alumina?
A: Fused alumina May be cast to corundum, crushed, ground and graded and formed into laboratory ware, or the prefired γ modification May be used. Ware should be fired at about 1700°c.
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