Sieving

Sieving – Fractionation of macro grain

Sieving

The term "macro-grain range" refers to grain sizes that are larger than 58 µ according to international standards. A size comparison: the mesh size of a nylon stocking is 250 µ. Customers often use individually adapted grain specifications in their processes in order to get the maximum performance out of the product for their process. Almost all mineral products can be sieved mechanically.

We have specialized in the ultra-fine screening of mineral oxides, especially Al2O3.

We are happy to advise you on the further processing or disposal of possible by-products.

Talk to us!

Markets

  • Laminate flooring industry
  • Paint industry
  • Abrasive paper industry
  • Industrial ceramics
  • Sand blasting industry

Product performance

  • Special fused alumina
  • Alumina
  • Mixed corundum
  • SIC
  • Garnet sand
  • Tone
  • Other Minerals
FEPA-F
FEPA
Active grain (µm)
F12
1765
F14
1470
F16
1230
F20
1040
F22
885
F24
745
F30
625
F36
525
F40
438
F46
370
FEPA
Active grain (µm)
F54
310
F60
260
F70
218
F80
185
F90
154
F100
129
F120
109
F120
109
F180
69
F220
58

OUR CERTIFICATIONS

ISO 9001:2015 – our commitment to reliable quality and certified standards in mineral grain processing.

CAREER

Become a part of Wester!
As a leader in innovation in the world of industrial minerals, we develop solutions that go beyond standards. It takes smart, forward-thinking people to help shape and grow with us. Become part of our team and let your strengths make a difference!

Join our Team.

Wester Mineralien GmbH
Heerstraße 41
53347 Alfter-Witterschlick

Phone: +49 (0) 228 987200
info@wester-mineralien.de
wester-mineralien.de

©2025 Wester Mineralien GmbH
Imprint I Privacy I Terms and conditions