COUNTERJET PNEUMATIC PULSE GRINDER Russian patent published in 1997 - IPC

FIELD: metallurgy, chemical, mining and other industries; grinding of hard bulk materials. SUBSTANCE: the grinder has initial material hopper with feed pipe, shell accommodating grinding chamber, impact plates, separator, speed-up pipes, feed channels and quick-acting fans. The grinder shell communicates through feed channels with horizontal speed-up pipes and conveying pipe with additionally mounted counterjet grinding chamber. This additional chamber serves as a shell for counterjet grinding and is communicated with feed pipe of initial material hopper and with feed channels of vertical speed-up pipes. EFFECT: production of finely dispersed powders. 1 dwg