A Review On Mechanical Activation And Mechanical
Vertical roller mills appeared between 1900 and 1920, and in the middle of the 20th century the autogenous and semiautogenous mills lynch and rowland, 2009eanwhile, the first attrition mill was invented by szegvri around 1930 which was a low speed vertical stirred media mill szegvari and yang, 1999here was a big step in the high.