Alumina Powder/α-Alumina Micropowder
Product Overview
Description
Alumina powder is an inorganic substance with the chemical formula Al2O3. It is a high hardness compound with a melting point of 2054°C and a boiling point of 2980°C. It is an ionic crystal that can ionize at high temperature and is often used in the manufacture of refractory materials.
Alumina powder is alumina Al2O3 solid powder, usually processed for α-al2o3 alumina powder, β-al2o3 alumina powder, γ-al2o3 alumina powder as a different use.
α-Alumina micropowder
α alumina powder has very stable physical and chemical properties, high hardness, wear resistance, high mechanical strength, insulation, high temperature resistance, low amount of burning, low coefficient of thermal expansion, good thermal conductivity and other characteristics.
α alumina is usually used as abrasive, toughening agent, refractory materials, polishing materials, etc.
Production Process
1. Raw material ball mill: helps to remove impurities, improve the conversion rate of the firing process, and increase the reaction speed;
2. Tunnel kiln roasting: continuous and stable production can be realized, and the roasting temperature can be controlled accurately;
3. Clinker ball mill: Grind the clinker into required particle size.
Specification
product model | High temperature medium and low sodium forging series | High temperature medium and low sodium activity series | ||||
YND 1 | YND 2 | NB 1 | NB 2 | NB 3 | ||
| al203 | >99.6 | >99.0 | >99.6 | >99.5 | >99.6 | |
impurity content （%） | Si02 | <0.05 | <0.1 | <0.05 | <0.05 | <0.05 |
Fe2O3 | <0.03 | <0.05 | <0.03 | <0.03 | <0.03 | |
| Na2O | <0.10 | <0.35 | <0.10 | <0.35 | <0.10 | |
α- Phase conversion rate(%) | >95 | >94 | >92 | >92 | >93 | |
True Density（g/cm3） | >3.95 | >3.94 | >3.92 | >3.92 | >3.93 | |
Primary Crystal size (μm） | 3-5 | 3-5 | 0.5-1 | 0.5-1 | 1-2 | |
Particle size Available (μm） | 4.0 + 0.5 | 4.0 + 0.5 | 2.0 + 0.5 | 2.0 + 0.5 | 2.5 + 0.5 | |
Apparent | White powder | |||||
Partical size Distribution | Customized | |||||
Application
1. Refractory products.High alumina bauxite clinker has a refractoriness of up to 1780℃, strong chemical stability and good physical properties.
2. Precision casting.The bauxite clinker is processed into fine powder and made into molds for precision casting. Used in military industry, aerospace, communication, instrumentation, machinery and medical equipment departments.
3. Aluminum industry.National defense, aviation, automobiles, electrical appliances, chemicals, daily necessities, etc.
4. Aluminum silicate refractory fiber; use magnesia and bauxite clinker as raw materials, sand and bauxite clinker as raw materials, sand and bauxite clinker as raw materials, manufacture bauxite cement, abrasive materials, ceramic industry and chemical industry can be produced Various compounds of aluminum.
STRICT INTERNATIONAL STANDARD (ISO) CERTIFICATION
Established a global quality management and environmental management system.
Passed the international standard certification established by the International Organization for Standardization (ISO). After a strict and systematic international review process, it is proved that the products and services provided to customers are strictly maintained.
ISO 9001 International Standard For Quality Management
Our Quality Management System is managed to consistently meet the needs of our customers with the highest global quality.
ISO14001 Environmental Management System Certification
Establish a world-class green management system to minimize harmful environmental factors and demonstrate that the energy, resource consumption and regeneration of our products are effectively managed.
ISO 45001 Occupational Health and Safety Management System Certification
ISO 45001 Occupational Health and Safety Management System evolved from OHSAS18001 Occupational Health and Safety Management System. This new standard is designed to help organizations around the world ensure the health and safety of their workers.
Applications
Cement Industry
Used in raw material mills and cement mills for efficient grinding of clinker and additives.
Mining & Mineral Processing
Ideal for grinding ores, minerals, and metallurgical materials with high wear resistance.
Power Generation
Used in coal pulverizers and ash handling systems in thermal power plants.
Building Materials
For grinding ceramic raw materials, pottery clay, and other construction materials.
Pharmaceutical
Suitable for pharmaceutical ingredient grinding requiring contamination-free media.
Paints & Coatings
Used for pigment grinding and production of various coating materials.
Product Advantages
High Hardness & Wear Resistance
Vickers hardness ≥ 1100 HV, offering significantly lower wear loss compared to traditional steel balls.
Cost-Effective Solution
Longer service life means fewer replacements and reduced downtime for your production lines.
Low Abrasion & Contamination
Minimal material wear ensures product purity and prevents contamination during grinding processes.
Precision Manufacturing
Advanced isostatic pressing technology ensures uniform density and consistent quality in every ball.
Custom Sizes Available
We produce balls from Ø 1mm to Ø 100mm, with custom sizes available to meet your specific requirements.
Global Shipping & Support
Fast worldwide shipping with professional technical support from our engineering team.
