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Zirconia Toughened Alumina Beads and Balls, Sintered

Zirconia Toughened Alumina Beads and Balls, Sintered

ZTA beads & balls are unique products, developed by CHEMCO expert R&D team after several years of research and tests. We are adopting the roll / granulation method for forming the small sizes beads, while using Isostatic Wet Bag Press to shape the big sizes balls. Proved by many industrial tests, ZTA is 2 - 15 times better in wear resistance than various quality high alumina ( 90 - 92 % Al2O3 ) media in the market, and the similar density enables this product to substitute high alumina grinding media very well. 

Until now, CHEMCO® ZTA Zirconia Toughened Alumina Beads & Balls are successfully being used in many modern types of mills, which include vertical mills, horizontal mills, agitated media mills and stirred media mills, such as IsaMill, Metso Vertimill®, Metso SMD, FLSmidth® VXPmill, OUTOTEC HIGmill® and many conventional ball mills.

 Features

  • Available in big sizes balls up to 70 mm, especially suitable for ball mills

  • At least 2 times better in wear resistance than “the best” high alumina ( 90 - 92 % Al2O3 ) media in the world market, proved by many tests

  • Superior performance-price ratio saving users’ cost

  • Higher impact strength makes the media not only suitable for wet grinding but also ideal for dry grinding

  • This is the bead also recommended for fine-grinding zircon

Main Applications

ZTA beads can be used in milling and dispersion of following materials, just name a few:

  • Ceramic body, glaze and zircon

  • Gold, silver, platinum, lead, copper and zinc sulfide

  • Coatings (wet ball milling)

  • Cement

Chemical Composition

Zirconium Oxide ( ZrO2 )    2%

Silica ( SiO2 )                      4%

Aluminium Oxide ( Al2O3 )  90%

Remainder                            4%

Properties *

Density ( g/cc )                3.65 ( ± 0.07 )

Bulk density ( kg/l )          2.3

Hardness ( HV )              1200

Mohs' hardness                9

Color                      White ( glossy sheen )

Standard Sizes (∅,mm )*
Beads

2.0 - 2.5

5.5 - 6.5

12 - 14

2.5 - 3.0

6.5 - 7.5

14 - 16

3.0 - 3.5

7.5 - 8.5

3.5 - 4.5

9 - 11

4.5 - 5.5

11 - 13

16 - 18

Balls

20 ± 1

45 ± 2

26 ± 1.5

52 ± 2

32 ± 1.5

63 ± 2

35 ± 2

70 ± 3