Ceramic Grinding Media

YSZ Grinding Media     Zirconium Silicate Grinding Media    

We also supply ZTA Grinding Media and Alumina Grinding Media. Please contact us atsales@stanfordmaterials.com

Quotation Request      Home Page     Product List   

YSZ Grinding Media

Properties     Applications     Products   YSZ Powders

YSZ Grinding Media

YSZ (Yttria Stabilized Zirconia) grinding media feature high density, toughness and super hardness, enabling to achieve superior grinding efficiencies compared with other conventional grinding media such as Alumina and Agate.

The high wear-resistant YSZ grinding media effectively eliminate product contamination and lengthen service life of the grinder. These special features make YSZ grinding media especially suitable for sensitive products and critical applications. YSZ grinding media are widely used for high viscosity, wet grinding and dispersion

YSZ Grinding Media Properties

Items

Unit

Typical Values
Composition

wt%

94.9% ZrO2 + 5.1%Y2O3
Bulk Density

kg/L

3.5
Specific Density

g/cm3

> 6.0
Hardness(HV)

GPa

> 10
Modulus of Elasticity

GPa

200
Thermal Conductivity

W/m.K

3
Thermal Expansion Coefficient

10x10-6/k (20 to 400)

9.6
Crushing Load

KN

> 15
Fracture Toughness

MPam½

8
Grain Size

µ m

< 0.5

Applications

1. High strength and high toughness products

Dielectric materials

Piezo electric materials

Mangnetic materials

2. Wear and corrosion resistance products

Coating

Textile

Pigment dispersions

Ink and dyestufts

3. Prevention of product contamination

Pharmaceutical

Foods

4. Ceramics:

Electronics ceramics

Refractory ceramics

Engineer ceramics

Nanometer Materials

Produts

YSZ Ceramic Balls

YSZ Ceramic Balls
    Item No. 
    Description 
    Lot Size 
    US$ 
  YSZ-B0.5 YSZ Ceramic Balls, Diameter: 0.5 mm
20 kg
100 kg
$72.06/kg
$57.97/kg
  YSZ-B0.8 YSZ Ceramic Balls, Diameter: 0.8 mm
20 kg
100 kg
$70.82/kg
$56.98/kg
  YSZ-B1.0 YSZ Ceramic Balls, Diameter: 1.0 mm
20 kg
100 kg
$63.50/kg
$51.09/kg
  YSZ-B1.2 YSZ Ceramic Balls, Diameter: 1.2 mm
20 kg
100 kg
$60.40/kg
$48.58/kg
  YSZ-B1.5 YSZ Ceramic Balls, Diameter: 1.5 mm
20 kg
100 kg
$58.80/kg
$47.30/kg
  YSZ-B2 YSZ Ceramic Balls, Diameter: 2 mm
20 kg
100 kg
$53.34/kg
$49.21/kg
  YSZ-B3 YSZ Ceramic Balls, Diameter: 3 mm
20 kg
100 kg
$52.50/kg
$42.23/kg
  YSZ-B5 YSZ Ceramic Balls, Diameter: 5 mm
20 kg
100 kg
$58.57/kg
$47.11/kg
  YSZ-B6.5 YSZ Ceramic Balls, Diameter: 6.5 mm
20 kg
100 kg
$57.53/kg
$46.28/kg
  YSZ-B10 YSZ Ceramic Balls, Diameter: 10 mm
20 kg
100 kg
$54.66/kg
$43.97/kg
  YSZ-B12 YSZ Ceramic Balls, Diameter: 12 mm
20 kg
100 kg
$54.75/kg
$44.05/kg
  YSZ-B15 YSZ Ceramic Balls, Diameter: 15 mm
20 kg
100 kg
$54.75/kg
$44.05/kg
  YSZ-B20 YSZ Ceramic Balls, Diameter: 20 mm
20 kg
100 kg
$53.06/kg
$42.68/kg
  YSZ-B25 YSZ Ceramic Balls, Diameter: 25 mm
20 kg
100 kg
$55.32/kg
$44.50/kg
  YSZ-B30 YSZ Ceramic Balls, Diameter: 30 mm
20 kg
100 kg
$55.32/kg
$44.50/kg

Other sizes may also be available based upon customers' request.


YSZ Ceramic Cylinders

YSZ Ceramic Cylinders
    Item No. 
    Description 
    Lot Size 
    US$ 
  YSZ-C5.5X5.5 YSZ Ceramic Cylinders, Dia. 5.5 x 5.5 mm
20 kg
100 kg
$83.78/kg
$65.82/kg
  YSZ-C7X7 YSZ Ceramic Cylinders, Dia. 7 x 7 mm
20 kg
100 kg
$59.50/kg
$48.19/kg
  YSZ-C7.5X7.5 YSZ Ceramic Cylinders, Dia. 7.5 x 7.5 mm
20 kg
100 kg
$59.70/kg
$48.02/kg
  YSZ-C10X10 YSZ Ceramic Cylinders, Dia. 10 x 10 mm
20 kg
100 kg
$57.79/kg
$46.52/kg
  YSZ-C12.7X12.7 YSZ Ceramic Cylinders, Dia. 12.7 x 12.7 mm
20 kg
100 kg
$55.53/kg
$43.74/kg
  YSZ-C15X15 YSZ Ceramic Cylinders, Dia. 15 x 15 mm
20 kg
100 kg
$55.66/kg
$43.79/kg

Other sizes may also be available based upon customers' request.

Zirconium Silicate Grinding Media

Properties     Applications     Products   Suggestions of Opperation  

Zirconium Silicate Grinding Media

  • High Grinding Efficiency

Grinding and dispersing efficiency are significantly improved owing to the beads’ possession of higher kinetic energy created by its big specific gravity. In the course of grinding, as a result, outlet speed and flow rate increase while circulation time as well as required grinding time drops. You will have both finished products in desired fineness and improved productivity.

  • High density, high tenacity, impact-resistance and low wear.

The advantage of its superior wear-resistance is highlighted especially in grinding of products with high precision and high solid content.

  • Highly stable chemical properties, corrosion-resistance, make it applicable as both acid and alkaline media.
  • Smooth surface makes cleaning an easy work.
  • Far less wear will take place to mechanical equipment.

Zirconium Silicate Grinding Media Properties

Items

Unit

Typical Values
Composition

wt%

68.5% ZrO2 + 5.1%SiO2
Bulk Density

kg/L

2.35
Real Specific Density

g/cm 3

3.86
Mohs Hardness(HV)

7.2
Compressive Strength

N

200
Melting Point

F

2120-2820

Zirconium Silicate Grinding Media Applications

Zirconium Silicate Grinding Media is widely used in grinding of coatings, inks, dyestuffs, pesticides, cosmetics, titanium dioxide, magnetic materials, kaolin, calcium carbonate, fillings, and surface treatments.

Zirconium Silicate Grinding Media Produts

Zirconium Silicate Ceramic Balls
    Item No. 
    Description 
    Lot Size 
    US$ 
  ZS-B0.07 Zirconium Silicate Balls, Diameter: 0.07-0.125 mm
25 kg
100 kg
500 kg
Please submit your inquiry.
  ZS-B0.125 Zirconium Silicate Balls, Diameter:0.125-0.25 mm
25 kg
100 kg
500 kg
Please submit your inquiry.
  ZS-B0.2 Zirconium Silicate Balls, Diameter: 0.2-0.4 mm
25 kg
100 kg
500 kg
Please submit your inquiry.
  ZS-B0.4 Zirconium Silicate Balls, Diameter: 0.4-0.6 mm
25 kg
100 kg
500 kg
Please submit your inquiry.
  ZS-B0.6 Zirconium Silicate Balls, Diameter: 0.6-0.8 mm
25 kg
100 kg
500 kg
Please submit your inquiry.
  ZS-B0.8 Zirconium Silicate Balls, Diameter: 0.8-1.0 mm
25 kg
100 kg
500 kg
Please submit your inquiry.
  ZS-B1.0 Zirconium Silicate Balls, Diameter: 1.0-1.2mm
25 kg
100 kg
500 kg
Please submit your inquiry.
  ZS-B1.2 Zirconium Silicate Balls, Diameter: 1.2-1.4 mm
25 kg
100 kg
500 kg
Please submit your inquiry.
  ZS-B1.4 Zirconium Silicate Balls, Diameter: 1.4-1.6 mm
25 kg
100 kg
500 kg
Please submit your inquiry.
  ZS-B1.6 Zirconium Silicate Balls, Diameter: 1.6-1.8 mm
25 kg
100 kg
500 kg
Please submit your inquiry.
  ZS-B1.8 Zirconium Silicate Balls, Diameter: 1.8-2.0 mm
25 kg
100 kg
500 kg
Please submit your inquiry.
  ZS-B2.0 Zirconium Silicate Balls, Diameter: 2.0-2.5 mm
25 kg
100 kg
500 kg
Please submit your inquiry.

Other sizes may also be available based upon customers' request.


SUGGESTIONS OF OPERATION

OPERATION INSTRUCTION
  • Clean the Mill chamber before charging with the beads.
  • Select beads of appropriate specifications according to the Mill volume, slurry viscosity and outlet clearance.
  • Test if the slurry viscosity meets requirements and check if the machine’s outlet clearance and rotation speed are appropriate.
  • In first use of the beads, it is recommended to pre-grind the beads in f fluid mix (resin and solvent) of certain viscosity for 30 minutes. When low-viscosity solvent is employed for pre-grinding, it is required to reduce the rotation speed and limit the duration to 15 minutes. (Note: Beads labeled as “pre-ground” need no pre-grinding during operation.)
    For low viscosity slurry, dispersion disc peripheral speed should not exceed 14m/s.
  • Due to the high kinetic energy of the beads, it is not necessary to operate at high rotation speeds to disperse high-solid-content and high-viscosity products.
  • For paint grinding, it is suggested resin should be used to clean the beads. If Solvent is required for that purpose, reduce the rotation speed and have the cleaning done within 10 minutes. Intermittent cleaning operation “On-Off” is recommended.
 ADDING BEADS
  • An extremely small number of ceramic beads would be broken by high-speed impacts after long time of grinding. It is required to make up the bead load at regular time.
  • Sieve out and weigh the broken beads, then add fresh ones of same weight.
  • Additional quantity of beads should be loaded for prolonged grinding time if the desired fineness of the finished product remains unchanged.
  • In case the finished product should not meet the required fineness within a prescribed period of time, additional quantity of beads should be needed.
 RECOMMENDED BALL CHARGE

Chamber Volume (L) Sealed Mill (kg) Open Mill (kg)
    Horizontal         Vertical         Vertical
8 15-16 13-15 11-13
15 28-29 24-28 21-24
30 55-59 48-55 41-48
45 83-88 72-83 62-72
60 110-117 97-110 83-97
115 212-225 185-212 159-185
225 414-440 362-414 310-362

NOTE
  • Mills of sealed type should not be overloaded lest the machine and the beads be damaged..
  • Mills of open type should be optimally loaded with the beads. In case of unsmooth running, reduce the bead charge gradually..
  • The bead charge shall be 80-85% for sealed horizontal, 70-80% for sealed vertical and 60-75% for open types Mills..
BEAD SIZE SELECTION

Following conditions shall be taken into account in bead size selection:

  • Nature of solid component of slurry.
  • Viscosity of the slurry..
  • Particle size of pigments to be ground or dispersed, desired fineness of finished products..
  • Specification of outlet clearance of the Mill machine or the filter screen, generally, the size of the smallest beads should be at least twice that of the separator screen or rotating gap separator..
  • The distance between the outer edge of the dispersion disc and the grinding chamber should be four times of the diameter of the largest bead..
SURFACE TREATMENT

1. Mold cleaning

2. Burring, polishing, buffing

3. Cleaning of non-ferrous alloy,
stainless steel and plastic parts

4. Releasing of welding stress

5. Mechanical polishing

6. Processing after coating Zirconia ceramic beads produced under electrofusion process feature the following characteristics:

  • Strength equaling that of steel beads, stronger than glass beads.
  • Enough and appropriate plastic metallic depth.
  • Low broken rate...
  • Even-distributed surface roughness.
  • Free of dust contamination.
  • Dispense with further dirt elimination treatment to stainless steel and alloy of nonferrous metal. Mainly applied to pre-stressing processing in space-flight industry, suitable for application in compressed air jet machine, irrespective of wet or dry process. Also applicable in surface treatment in turbo system, such as cleaning, polishing and burring, etc….

Properties     Applications     Products   Suggestions of Opperation  

Home Page     Product List     Beginning of This Page    Quotation Request