| 摘要 |
PROBLEM TO BE SOLVED: To steadily stably and continuously generate superfine particles having a finer and uniform particle size in a manufacture of photographic emulsion particles such as silver halide particles. SOLUTION: A plurality of liquids or solutions to be mixed are ejected from nozzle ports 46A of respective supply pipes 46 into a rotating hollow body 44 which rotates at high speed together with fin vanes 42 attached to the inside surface, are stirred and mixed by the fin vanes 42 and the stirred and mixed liquid mixture is discharged from the inside of the rotating hollow body 44 via a discharge pipe 48. At this time, ultrasonic vibration energy is imparted to the liquid or solution which is ejected from the supply pipe 46 into the rotating hollow body 44 and, at the same time, the ultrasonic vibration energy is imparted to a liquid mixture flowing through the discharge pipe 48.
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