Roll mill
AssigneeKrupp Polysius AG
InventorsGerhard Kastingschafer, Bernhard Peterwerth, Heinz Schroder
Life of this patent
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Abstract
The invention relates to a roll mill, particularly a material bed roller mill for the comminution of brittle material for grinding, with two grinding rolls which are driven so that they rotate in opposite directions and are pressed against one another at high pressure, each of these grinding rolls having a roll shell of wear-resistant chill cast material with a surface profile. So that the rolls have a particularly good nip capacity and a high wear resistance, profiles in the form of weld beads of wear-resistant deposit welding material are applied to the surface of the chill cast roll shell.
Claims17
Roll mill for the comminution of brittle material comprising:
- two grinding rolls mounted to be rotatable in opposite directions and pressed toward one another at high pressure, each of said grinding rolls having a basic roll body and an outer roll shell, each of said roll shells presenting a grinding surface of wear-resistant, chill cast material to which an array of profiled beads of wear-resistant deposit welding material is fixed by welding.
A grinding roll construction for use in a material bed roll mill in which brittle material is crushed between two contrarotating rollers pressed laterally toward one another under high pressure, said roll construction comprising:
- a basic roll body;
- a roll shell supported about said roll body and presenting an outer grinding surface of wear-resistant chill cast material;
- and
- an array of raised beads of wear-resistant deposit welding material welded to said outer grinding surface of said roll shell.
Dependencies are inferred from the claim text.