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90% ALUMINA SATELLITES

90% Alumina media comes in satellite shape-spheres with a slightly raised

band around the middle. They are also available in rod/cylinder shape.

ALUMINA BALLS AND SATELLITES

Union Process is the one source for 90%, 94%, 99.5% and 99.9%

alumina media. 90% alumina is available in satellites and rod/cylinders.

94% alumina balls have excellent wear resistance with higher impact

strength to save running costs with less contamination. They have

great wear rate generally better than 90% or 99.5%. 99.5% alumina

balls have the highest alumina content for a moderate price. The .5%

impurity is MgO that is added to inhibit grain growth during sintering in

the kiln. There is less than 0.1% silica in the media. 99.9% alumina balls

are made of very pure and reactive (expensive) rawmaterials. They are

for high purity alumina applications where contamination is a factor.

ALUMINA BEADS

Alumina Beads are specially formulated to be used in high-energy

mills in which a high degree of fineness is required. They are used

in various industrial fields such as inks, paints, advanced ceramics,

mining, cosmetics and pharmaceutical industries. They are a perfectly

spherical shape with high mechanical properties and high wear

resistance at a moderate price.

BURUNDUM CYLINDERS

Burundum is a high-density alumina media available in cylinders. It

comes in 90%, 96%and 99%alumina compositions. Cylinder sizes range

from ¼" x ¼" to 1 ¼" x 1 ¼". They are an ultra-high fired media that are

unaffected by most acids and alkalis, chip-resistant and non-porous.

CERAMIC SATELLITES (STEATITE)

Ceramic Steatite is a very cost-efficient media. They are a satellite

shape with composition of MgO 27.5% and SiO2 61.4% along with

other minimal materials.

GLASS BEADS

This grade is used for milling applications with 85% roundness. All

Glass Beads are lead-free and less expensive.

NYLON PELLETS

Nylon Pellets are a very light density, low impact, low-cost media

available in

1

8

" size.

SILICON CARBIDE BALLS

Silicon Carbide Balls are very high-cost grinding media that are

used for milling same materials (silicon carbide ball to mill silicon

carbide materials) to avoid contamination. They are only available in

5mm,10mm, 15mm and 20mm sizes. They are a special order item.

SILICON NITRIDE BALLS

Silicon Nitride Balls are very high-cost grinding media that are used

for milling same materials (silicon nitride ball to mill silicon nitride

materials) to avoid contamination. They are now available in 2mm and

3mm and sizes up to 25mm. They are a special order item.

TUNGSTEN CARBIDE SATELLITES/BALLS

Tungsten Carbide media is the hardest and densest (highest specific

gravity) media and is available in both satellites and balls upon

request. They are now available in sizes 0.5mm, 0.6mm, etc., up to 1"

diameter. They are a high-cost media and are a special order item.

ZIRCONIUM OXIDE BALLS (YTTRIA STABILIZED)

HIGH PURITY 95% ZrO

2

ZirconiumOxideBalls (95%ZrO

2

) are the strongest, best wearing ceramic

media for metal-free, pharmaceutical and food processing grinding.

These balls have a white, shiny appearance. They are also available in

3

8

" and ½" cylinders. This 95% grade is high-cost.

ZIRCONIUM OXIDE BEADS (YTTRIA STABILIZED) 93% ZrO

2

93%ZirconiumOxideBeadsareanotheroption formetal-freeapplications

that are lower cost than 95% ZrO

2

.

ZIRCONIUM OXIDE SATELLITES/BEADS — CeO

2

RARE

EARTH STABILIZED

ZirconiumOxide Satellites—Ceria stabilized (rare earth)—are a cheaper

zirconiumoxide alternative for metal-free applications. They are a brown,

shiny ball media that come in size ranges in the smallest sizes (ex: 0.4–

0.6mm), then at 6mm come in uniform sizes (6mm, 8mm, etc.) up to 31mm.

ZIRCONIUM SILICATE BEADS (FUSED AND SINTERED)

Zirconium Silicate Beads are available in fused 68% ZrO

2

beads which

are a standard reliable media at low cost, and sintered 58% ZrO

2

beads which have high breakage resistance, are durable and cost

effective. They are used to microgrind paints, inks, dyes, magnetic

coatings, minerals, agrochemicals and ceramics.