Roll mill

Abstract

A roll mill for comminuting and homogenizing viscous masses, in particular for dispersing and uniformly distributing solid particles suspended in a binding agent. The roll mill has at least two rolls pivoted around their longitudinal axes, wherein the rotational axis of the first roll is fixed in place, and the rotational axis of a second roll is movably mounted, as well as at least one pressing device for pressing at least one roll against the other roll. Roll pressing takes place by way of a pressing device. The back roll or transfer roll intended for product removal has a shorter axial process length than the process length of the middle roll.

1 . A roll mill for comminuting and homogenizing viscous masses, comprising: 
 at least two rolls pivoted around their longitudinal axes, wherein a rotational axis of a first, middle roll is fixed in place, and a rotational axis of a second, back roll is movable; and    at least one pressing device for pressing at least one roll against the other roll, wherein in the back roll used for product removal has a shorter axial processing length than a processing length of the middle roll, the back roll being axially situated relative to the middle roll so that ends of the processing length of the middle roll extend over the ends of the processing length of the back roll on both sides.    
   
   
       2 . The roll mill according to  claim 1 , wherein the rolls have surfaces made out of a metal-free ceramic material.  
   
   
       3 . The roll mill according to  claim 1 , wherein the mill is a three-roll mill, and the rolls are arranged, when viewed from the side, in the form of an L.  
   
   
       4 . The roll mill according to  claim 1 , wherein in the rolls have a ceramic cylinder fit onto a hollow metal cylinder.  
   
   
       5 . The roll mill according to  claim 1 , wherein the rolls are internally cooled.  
   
   
       6 . The roll mill according to  claim 1 , wherein the pressing device is a mechanical-pneumatic pressing device.  
   
   
       7 . The roll mill according to  claim 1 , wherein the pressing device has a controller for setting the nip.  
   
   
       8 . The roll mill according to  claim 1 , wherein the back roll is 2 mm to 10 mm shorter than the middle roll.  
   
   
       9 . The roll mill according to  claim 8 , wherein the back roll is 3 mm to 6 mm shorter than the middle roll.