STIRRING BALL MILL

PROBLEM TO BE SOLVED: To provide a stirring ball mill of which the milling capability is not lowered by avoiding foaming of a gas component contained in an object material to be milled in a milling chamber by milling.SOLUTION: The stirring ball mill 1d for finely milling or dispersing a material is provided with a cylindrical or conical milling chamber 10d for storing milling bodies and storing also the material to be milled or dispersed. The stirring ball mill has an inlet 11, a stirrer 13d, and a product discharge port 12. The inlet 11 is formed in one end part of the milling chamber. The stirrer 13d has a stirring means 131d extended in the milling chamber in the axial direction. The product discharge port 12 is a product discharge port for a milled or dispersed material and formed in the other end part of the milling chamber. A gas discharge port 14 is formed in the center region in the other end part of the milling chamber to discharge not milling bodies but a gas component out of the milling chamber through the gas discharge port 14.