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High purity alumina beads

The high purity alumina beads that we developed characterized in excellent abrasion resistance and high purity.


High purity alumina beads

1.Excellent abrasion resistance

When the high hardness ceramics is ground, abrasion resistance is higher than the zirconia beads.

2.High purity

The purity of the alumina beads is 99.99% or more.
When grinding, no contamination other than alumina.
It is suitable for grinding and dispersion of the electronic material that dislikes mixing the radioisotope.

3.Excellent corrosion resistance

It is excellent in corrosion resistance to the acid and the alkali.
There is no performance deterioration to the warm water.

4.Energy saving of grinding and dispersion

The density of alumina is 2/3 of the zirconia, and the filling weight to the mill is 2/3.
In addition, there is a possibility that the consumption energy when grinding can be decreased.

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2.Size of beads

φ0.1mm, φ0.2mm, φ0.3mm, φ0.4mm, φ0.5mm

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Apparent density : 3.9g⁄cm³
Filling density : 2.4g⁄cm³

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4.Typical purity data

Typical purity data

Element Na K Si Fe Mg Ca Cr
Content (ppm) 8 4 10 8 3 3 2

(U:4ppb or less, Th:5ppb or less)
Analysis by ICP

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5.Abrasion resistant test

Comparison of amounts of beads abrasion when agitator beads mill is used

Comparison of amounts of beads abrasion when agitator beads mill is used

Mill type : Agitator beads mill
Grinding material : α-alumina powder or aluminum hydroxide (Gibbsite)
Concentration of slurry : 60% in case of a-alumina powder, 15% in case of aluminum hydroxide
Rotor speed : 7.8m/s, 12.6m/s
Slurry temperature : 20 - 30℃

Test conditionA

Use slurry : No grinding material, only water
Rotor speed : 7.8m/s

Test conditionB

Use slurry : Alumina slurry of 60%
Rotor speed : 12.6m/s

Test conditionC

Use slurry : Aluminum hydroxide slurry of 15%
Rotor speed : 12.6m/s

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Download SDS of products.(PDF file type)
You need Adobe Reader in order to view the PDF files.

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7.Contact us

For further information or any comments, please contact...

Address Maruito-GinzaBldg.9F, 1-3-9, Ginza, Chuo-ku, Tokyo 104-0061 Japan
TEL +81-3-3563-2491
FAX +81-3-3563-2498

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