TUBULAR CONTINUOUS-OPERATION MILL Russian patent published in 2015 - IPC B02C17/00 

FIELD: process engineering.

SUBSTANCE: claimed mill can be used for grinding of hard materials in construction, chemical industry, metallurgy and agricultural production. This mill comprises drum (1), loading and unloading spindles (2) and (3) and drive. Said drum consists of at least four rectangular constant-width strips, in even number. Said strips are twisted in lengthwise direction relative to their axes and in helical line on cylindrical mandrel in transverse direction. Said strips are bent alternately in opposite sides over weakened cross-section areas, that is notches. Said notches are made from the strips opposite sides at 60 degrees to each other and to strips lengthwise edges at different angles on walls-skews of said areas. Wall edges are connected to make equilateral triangles over the strip width. Said triangles alternate in opposite sides. Said strips are interconnected by their lengthwise edges to make, in inner perimeter, four and more curvilinear zigzag helical surfaces and grooves of the main and opposite directions.

EFFECT: simplified drum fabrication, higher intensity of mixing and efficiency.

9 dwg