We use cookies to personalize content, provide social media features and analyze traffic to our site. You give your consent to the use of cookies if you continue to use our websites. For more information, please read the page about our privacy policy.
Web Content Display
Web Content Display

Frit & color pigment

In the frit- and mineral colour pigment production,  the raw materials of the batch are generally stored in silos. Based on the recipe the components are charged into a mixer in a pre-defined order to eliminate separation. The mixed batch is then transported to the batch charger – usually of screw type – and fed, in a certain amount for each charge, to a smelting aggregate, which may be a hearth furnace or a rotary furnace . In case of colour pigments, the smelting aggregate is generally a rotary furnace. The batch is melted in a melting area what can be air-fuel or oxy-fuel fired. After a pre-defined melting time, the material is withdrawn from the furnace through a heated throat (in case of a hearth furnace) or poured out from the drum of the rotary furnace and quenched with water on a chute or a conveyor . The powdery product is collected in big bags or – after performing  a drying measure out into a paper bag.

In case of frit we distinguish three different types:

a. Ceramic/glass frit

b. Enamel frit

c. Low melting point frit

The major components, depend on the different types of frit, are:

  • Feldspar, sand, calcium carbonate, dolomite, zinc oxide, zirconium compounds for ceramic/glass frit
  • Sand, borax, titanium oxide, sodium nitrate and different fluorides for Enamel frit
  • Red lead (Pb3O4), sand, zinc oxide, boric acid for low melting point frit

Frit & color pigment Raw materials Mixer Rotary drum furnace Hearth furnace Rotary drum furnace Frit Water cooling Frit Pigment Packaging