| 摘要 |
FIELD: grinding of hard materials in construction, chemical and metallurgical industry. ^ SUBSTANCE: tubular mill has drum manufactured from at least one strip bent along straight lines extending at an angle to strip edges for defining identical parallelograms alternatively oriented in opposite directions on strip. Strip is rolled into cylindrical coils connected with one another along longitudinal edges for defining of unidirectional broken helical lines on outer surface and of helical triangular broken pockets on inner surface. ^ EFFECT: simplified manufacture, wider operational capabilities and intensified grinding of hard materials. ^ 6 dwg |
