Since 2005, Mavi Máquinas Vibratórias from São Paulo, Brazil, represents Sahut Conreur, France for roller and briquetting presses, with deliveries made for Latin America. An important application is the grinding of Titaneum Dioxide with roller presses, instead of hammer mills. The article below helps clarify aspects on this modern technology developed by Sanhut Conreur.

Because of his high index of refraction, the Titanium Dioxide is the most used white pigment. With an optimum size of particles (generally 0,2 to 0,3μm), this pigment diffuses as best the light and provides whiteness, brightness and opacity to a vast range of everyday products like paints, plastics, papers, coatings, foods,cosmetics, medicines, etc…

The raw material used during the manufacture of Titanium Dioxide pigments, often issued of ores as Rutile (R) or Anatase (A), undergo calcination treatments before to be finely grinded. This grinding process is very important due to its influences on the next steps of process but also because of important energetic costs generated during this grinding. 

During their passage in the furnace, the TiO2 particles with an initial size in the range of 0,2 to 0,3 μm agglomerate to form crystals with around 1 to 10 mm size range. Then, these crystals are grinded with the bringing of important energy, especially for the grinding particles with an important size range. 

In the past, this grinding operation, usually carried out by pendulum mills or hammer-mills generated a great energy consumption associated to important maintenance costs. Since several years, the introduction of the Roller Press at this process step generates :

  • Energy savings, up to 50% compared to the pendulum mills or hammermills technologies.

  • An output increase of grinded product, of about 50 to 100% compared tothe traditionnal technologies.

  • A cost decrease of production and maintenance of these installations.The grinding with Roller Press can be installed either in a new plant or an existing one by replacing old technologies.

If you need more information please contact Mavi at (00 55 xx ) 11 3577 6200.