Trigonal Brown Aluminum Oxide with Refractive Index 1.63-1.76 150#

Product Description:

Brown Fused Alumina is produced through a fusion process of bauxite in an electric arc furnace at very high temperatures. This brownish-colored product is characterized by its hardness and extreme toughness, as well as its high temperature resistance, strong erosion resistance, superior combination of machinery strength and thermal stability.

The unique combination of these properties makes Brown Fused Alumina the perfect material for manufacturing of crucible refractories. It is also the preferred choice for general abrasive applications in bonded abrasive tools, such as polishing and sandblasting.

To ensure the quality of the product, Brown Fused Alumina is fused with premium raw materials in a 3500 KVA furnace. Despite having lower hardness and abrasive capacity compared to diamond, boron carbide and silicon carbide, it is still widely used for finishing tough and hard materials, such as ferrous materials. Moreover, it is often be used as a high-class refractory material, and is offered in F and P grades, in both micro and macro powder forms.

Features:

Brown corundum was used as sandblasting surface treatment, because of its relatively high density, so that is less dust in the process of sandblasting. This ensures operator health and safety, at the same time it can improve operator visibility.

Different from conventional abrasive materials, brown corundum is a pure non-toxic mineral, which does not contain harmful free silicon substances that lead to silicosis, toxic heavy metals or radioactive pollutants. In addition, the low consumption and recyclability of products can greatly reduce the amount and cost of waste disposal after the product is used.

Brown corundum is very suitable for many fields. Normally, it can be reused several times. If it has not lost its cutting ability after the first time, the number of cycles can be more. Without cutting ability, brown corundum can also be recycled and applied to the construction industry as cement additive.

Technical Parameters:

Chemical Constitution: Al2O3 is the main component of this substance, more than 96.3%. SiO2, Fe2O3 and TiO2 are the other major components which do not exceed 1.4%, 0.21% and 1.5% respectively.

Physical Properties: It has a brown colour, a Mohs hardness of 9 and a true density of 3.9 g/cm3. Furthermore, its bulk density ranges from 1.60 to 1.95g/cm3 and its Ig-loss does nor exceed 0.09%.

Applications:

Wire sawing: Brown corundum is used as an abrasive in wire sawing operations to cut complex shapes in a variety of materials. It enables the user to make precise and accurate cuts that would otherwise be difficult to achieve with other methods:

Precision casting: It is widely used in precision casting, a manufacturing process which is used to create high accuracy components for the aerospace, automotive, and medical industries. The use of brown corundum provides durability, accuracy, and a longer service life for the resulting component.

Lining materials: Brown corundum is used in lining materials for furnaces and kilns due to its excellent resistance to high temperatures. This makes it suitable for applications that require high temperature resistance, such as ceramics manufacturing.

Grinding paste: Brown corundum is used in grinding pastes for various applications such as optical lens grinding, tool manufacturing, and polishing. Thanks to its abrasive properties, it is an effective grinding material that produces smooth surfaces on the material being worked.

Ultrasonic grinding: It is used in ultrasonic grinding, a non-contact machining process which is used for surface finishing and material removal. Brown corundum produces a finer finish, as it is able to reach deeper ridges and valleys in the workpiece.

Diamond grinding wheel binding agent: Brown corundum is used as a binding agent in diamond grinding wheels, which are typically used in high-precision grinding operations. This makes the wheel more durable, and increases its efficiency.

Metal surface treatment: It is used in metal surface treatment, such as cleaning, degreasing, and polishing operations. Its abrasive properties allow it to effectively remove rust and tarnish from metal surfaces, producing a smooth and bright finish.

Stone materials cutting: Brown corundum is used in the production of cutting discs used to cut stone and concrete. Its abrasive properties provide a superior cutting ability that is able to easily penetrate even the hardiest of materials.

Customization:

Packing and Shipping:

Brown Aluminum Oxide is packaged in 50-lb bags, 2000-lb supersacks, and bulk bags. It is shipped in bulk bags, supersacks, and/or pneumatic trailers.