Find your local Metso sales team or distributor Metso France SAS 41, Rue de la République, F-71000 Mâcon, FRANCE, tel. +33 3 8539 6200, +33 3 8539 6314 www.metso.com Copyright © 2020 Metso Corporation. 4144-01-20-EN-AGG. All trademarks and registered trademarks are the property of their respective owners. The information in this document is provided as is without warranty of any kind, either express or implied, including but not limited to the implied warranties of merchantability, fitness for a particular purpose or non-infringement and for informational purposes only. In no event shall Metso be liable to any party for any direct, indirect, special or consequential damages arising out of, caused in connection with or due to any use of the information in this document. Information in this document may include inaccurate information or information which has not been updated. Metso has the right to make changes in the document without notice. Not all products or services are available in all countries. Metso Gravitational Inertial Air Classifiers Precise dry classification for ultrafines in manufactured sands

Manufactured sand - the ideal ingredient for concrete The most efficient way to achieve ultrafine separation Sand is a key ingredient in concrete and asphalt, and has traditionally been obtained from natural sources; however, this is becoming increasingly difficult as environmental regulations catch up with public opinion and environmental concerns. Around the world, new regulations are being put in place to protect sources of natural sand, and in many cases sourcing sand from river banks and shorelines has been banned completely. As a result, manufactured sand is becoming a viable alternative...

1. Feed material is evenly introduced from the top of the classifier Primary Air Inlet The material falls Air Outlet in a controlled with fines Secondary curtain into theAir Inlet Coarse particles classifier chamber along with primary air fed in at the top In precise dry classification of different fractions of sand, a complete solution for separation and dust collection is needed. Air outlet with fines 4. Recirculation and scrubbing enables high efficiency and precise separation of ultrafines 3. Secondary air is drawn in at the bottom, inducing a scrubbing effect on similar-sized particles 5....

Metso solution Sand manufacturing process that uses fractionizing of fine sands and dry air classifying Low operating costs with minimal wear Results Superior particle shape, consistent gradation, and the flexibility to balance the sand mix according to customer needs Local cement producers have achieved cement savings of up to 10–15% Ceramic liners after 4 years of usage Ceramic liners after 7 years of usage “With manufactured sand, it’s all about consistent moisture, gradation, and shape. After a lot of testing, we can now say with confidence that Velde Pukk can accurately achieve the gradation...