Alumina Balls Series

Alumina Balls

Mohs Hardness: ≥9

Purity: Aluminum oxide≥99.9%

Application: Wear resistant materials, grinding media, valve cores, ceramic products, fillers, high-performance ceramics, electronic materials, optical devices

Table of Contents

Alumina Balls Description

Alumina balls are non-spherical aluminum oxide particles with lots of uses in the petrochemical, agricultural and paint industries. They can be used directly to enter into the reaction, significantly decreasing their impact on the catalyst and hence the service life of the catalyst.

Moreover, the alumina balls are also used making surface protecting coatings. After being been sprayed on the metals, plastics etc., the surface hardness will be improved and corrosion resistance, wear resistance and flame resistance will also be called upon.

In the electronics industry, spherical alumina ball is of very great importance in the area of electronic packaging because it has got excellent electrical, thermal and mechanical properties.

Giving a class of alumina balls is possible in different ways, e.g. by the ball milling matter, sol-emulsion-gel method, and drop ball methods. A particular method has its own qualities and possibilities on the one hand which can be used in various situations and on the other hand it is up to the appropriate preparation process or method which can be chosen depending on special requirements.

Available Size

Alumina Ceramic Ball

Alumina Grinding Ball

Aluminum oxide grinding balls are spherical particles made of high-purity aluminum oxide, commonly used as abrasives or grinding media. Due to its high hardness and good wear resistance, it is also widely used in industries that require high grinding and wear resistance.

Alumina Grinding Ball

Alumina Ceramic Ball

Alumina ceramic balls are a multifunctional ceramic material made of alumina. They have a variety of excellent physical and chemical properties, such as high hardness, wear resistance, corrosion resistance, and electrical insulation properties. They are often widely used in grinding, polishing, metallurgy, ceramic product production, and other fields.

Advantages Of Yafeite Alumina Balls

High Hardness

Mohs hardness is nine and above, making it a very hard and wear-resistant material.

Corrosion Resistance

Good corrosion resistance and good stability to many chemical substances.

Lightweight

Alumina is a relatively lightweight ceramic material, which makes alumina balls easier to handle and use in certain applications.

Wear Resistance

Due to its high hardness, alumina balls perform well in grinding and grinding applications and are often used as grinding media, grinding materials, etc.

Electrical insulation

Aluminum oxide is an excellent electrical insulator and is suitable for use in electronics and electrical fields.

Parameter

64%Alumina balls
property parameterSpecific indicatorsnotes
chemical compositionAl2O3≥60%
SiO2:≤31%
Fe2O3≤0.6%
other≤8%
 
density(g/cm3)≥2.8 
Vickers hardness(GPa)≥7HV5
abrasion(g/kg.h)≤1.6Quick grinding (1000g ball +500ml water,Grinding tank volume 1000ml,speed 400r/min)
crushing strength(Φ3.0)≥600NThe strength shall be based on the specific actual test size
appearancequalifiedNo damage, no iron spots, no sticky silicon
dimensionqualifiedRequire to be within the tolerance range
roundness≥95% 
75%Alumina balls
property parameterSpecific indicatorsnotes
chemical compositionAl2O3≥75%
SiO2:≤20%
Fe2O3≤0.4%
other≤5%
 
density(g/cm3)≥3.15 
Vickers hardness(GPa)≥8HV5
abrasion(g/kg.h)≤1.6Quick grinding (1000g ball +500ml water,Grinding tank volume 1000ml,speed 400r/min)
crushing strength(Φ3.0)≥800NThe strength shall be based on the specific actual test size
appearancequalifiedNo damage, no iron spots, no sticky silicon
dimensionqualifiedRequire to be within the tolerance range
roundness≥95% 
92%Alumina balls
property parameterSpecific indicatorsnotes
chemical compositionAl2O3≥92%
SiO2:≤5%
Fe2O3≤0.1%
other≤3%
 
density(g/cm3)≥3.60 
Vickers hardness(GPa)≥12HV5
abrasion(g/kg.h)≤1.6Quick grinding (1000g ball +500ml water,Grinding tank volume 1000ml,speed 400r/min)
crushing strength(Φ3.0)≥1050NThe strength shall be based on the specific actual test size
appearancequalifiedNo damage, no iron spots, no sticky silicon
dimensionqualifiedRequire to be within the tolerance range
roundness≥95% 
Attention: Balls larger than 15mm are measured for wear using a triple frame ball mill, and the wear is generally around 0.01g/kg/h, with an equivalent wear of 0.003 ‰
Below; The detection conditions are as follows: the speed of the ball mill is 80rpm/min; Sample quantity 4kg, tap water 4.0kg; Test time of 24 hours; The volume of the grinding tank is 7000ml.
99%Alumina balls
property parameterSpecific indicatorsnotes
chemical compositionAl2O3≥99%

Rare earth and other elements ≤ 0.5%
 
density(g/cm3)≥3.9 
Vickers hardness(GPa)≥1400HV5
abrasion(g/kg.h)≤0.03‰JC/T 848.1-2010
crushing strength(Φ3.0)≥55000NThe strength shall be based on the specific actual test size
appearancequalifiedNo damage, no iron spots, no sticky silicon
dimensionqualifiedRequire to be within the tolerance range
roundness≥95%

 

 

Strict Production Process

Raw Material

Prepare alumina ore or aluminum-containing compounds as starting materials to produce high-purity alumina powder.

Sintering

In order to form a dense ceramic structure, alumina spheres need to be sintered in a high-temperature furnace.

Forming

Mix alumina powder with appropriate additives and shape it by pressing, injection molding, etc.

Cool Down

In order to ensure the stability of the structure, the sintered alumina balls need to be cooled.

Dry

The formed sphere is dried to remove added moisture and make it more mechanically strong.

Surface Treatment

Alumina balls are subjected to surface treatments such as polishing or coating to meet the needs of the final application.

Convincing Test Report

Customizable Packaging

Alumina ball packaging

Yafeite Packaging

Positive Client Feedback

Alumina ball customer reviews
Alumina ball customer feedback
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