Process for producing colouring pigment granulated materials

Abstract

A process for producing coloring pigment granulated materials comprises producing binder-free granulated materials via a primary granulator, immediately compacting the granulated materials, feeding the compacted granulated materials to a classification that separates a useful grain size fraction, and coating the useful grain size fraction with a coating material.

1 . A process for producing colouring pigment granulated materials, comprising: 
 producing binder-free granulated materials via a primary granulator,    compacting said granulated materials immediately after said step of producing;    feeding said compacted granulated materials to a classification that separates a useful grain size fraction; and    coating said useful grain size fraction with a coating material.    
     
     
         2 . The process as claimed in  claim 1 , wherein the coating material is applied to the fraction in a dissolved form using spray nozzles, and the coating is solidified by feeding in dry air.  
     
     
         3 . The process as claimed in  claim 1 , wherein the coating is made of a molten material that is applied to the useful fraction at a fusion temperature of >60° C. using spray nozzles, and wherein the coating is solidified by cooling.  
     
     
         4 . The process as claimed in  claim 1 , wherein granulation water contained in the granulated material is expelled by a drying process.