Reactive Grade Alumina Description
Reactive grade alumina powders are processed for use as reactive binder in various applications. With a crystal size of less than 2 microns, the Martinswerk reactive grade alumina powders have an Al2O3 content of at least 99.8%. Reactive grades are more stable than calcined alumina, thus suitable for dense, high strength wear resistant materials.
Reactive grade alumina is a specialized form of aluminum oxide with controlled properties for enhanced reactivity. It's used in catalyst manufacturing, chemical synthesis, and creating advanced materials with specific attributes.
Features:
-High Hardness
-High Compression Strength
-Abrasion/ Wear-Resistance
-Abrasives
-Chemical Inertness
-High Degree of Refractoriness
-Superior Electrical Insulating Properties
-Dielectric Properties
-High Melting Point
Reactive Grade Alumina Specifications
|
|
MR23
|
MR32
|
MR42
|
MR52
|
MR70
|
|
Al2O3 (%)
|
≈99.8
|
≈99.8
|
≈99.8
|
≈99.8
|
≈99.8
|
|
Na2O (%) total
|
≤0.1
|
≤0.1
|
≤0.1
|
≤0.1
|
≤0.1
|
|
CaO (%)
|
≈0.02
|
≈0.03
|
≈0.02
|
≈0.04
|
≈0.02
|
|
Fe2O3(%)
|
≈0.02
|
≈0.03
|
≈0.02
|
≈0.03
|
≈0.02
|
|
SiO2 (%)
|
≈0.025
|
≈0.05
|
≈0.05
|
≈0.01
|
≈0.08
|
|
MgO
|
-
|
-
|
-
|
≈0.08
|
≈0.06
|
|
αAl2O3 (%)
|
≥95
|
-
|
-
|
≥95
|
-
|
|
Loss on Ignition (%)
|
≤0.2
|
-
|
-
|
≤0.23
|
-
|
|
Specific Surface Area (m2/g)
|
0.2-0.5
|
3.5-5
|
2-3
|
6-9
|
6-10
|
|
Primary Crystal Size (µm)
|
≈3
|
-
|
-
|
≈1.5
|
-
|
|
Bulk Denisty (kg/m3)
|
≈600
|
≈1000
|
≈600
|
≈1100
|
≈900
|
|
Green Density (50 MPa) g/cm3
|
≈2.16-2.30
|
≈2.45
|
2.1-2.3
|
-
|
2.15-2.38
|
|
Fired Denisty (1600oC, 2h) g/cm3
|
-
|
≈3.4
|
3.0-3.3
|
-
|
3.74-3.95
|
|
Water Adsorption (ml/100g)
|
-
|
-
|
≈18
|
≈13
|
≈20
|
Reactive Grade Alumina Applications
1. Ceramics: RGAP is used in the production of advanced ceramics, including structural ceramics, electronic ceramics, and wear-resistant components. It helps achieve high density and fine microstructure in the final ceramic products.
2. Refractories: It is used in refractory materials, which are designed to withstand high temperatures and harsh environments. RGAP enhances the mechanical strength and thermal stability of these materials, making them suitable for applications in furnaces, kilns, and other high-temperature processing equipment.
3. Catalysts and Catalyst Supports: Due to its high surface area and purity, RGAP is used as a catalyst and catalyst support in various chemical reactions, including those in the petrochemical and environmental industries.
4. Polishing and Abrasives: The fine particle size and hardness of RGAP make it an excellent material for polishing and abrasive applications, including the polishing of metals, optical components, and semiconductor wafers.
5. Electronics: RGAP is used to produce electronic components such as insulators, substrates, and dielectric materials due to its excellent electrical insulation properties and thermal conductivity.
6. Paints and Coatings: It is used as a filler in paints and coatings to improve their durability, hardness, and resistance to wear and corrosion.
7. Composite Materials: RGAP is incorporated into composite materials to enhance their mechanical properties, including strength and stiffness.
8. Biomedical Applications: In the biomedical field, RGAP produces bioceramics and other medical devices that require high purity and biocompatibility.
Reactive Grade Alumina Packaging
Our Reactive Grade Alumina is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
Frequently Asked Questions (FAQ)
- Can reactive grade alumina powder be customized for specific applications?
Yes, reactive grade alumina powder can be customized in terms of particle size, surface area, morphology, and chemical composition to meet the specific requirements of different applications.
- How do you handle and store reactive grade alumina powder?
Handle reactive grade alumina powder with care to prevent contamination and minimize exposure to moisture and air. Store it in a dry and tightly sealed container away from direct sunlight and extreme temperatures.
