micronization device

Abstract

The present invention provides an atomization unit which can eliminate nonuniform arrangement of granularity in combination of a bead mill and a wet type jet mill and can further improve work efficiency of atomization treatment. According to the invention, in the atomization unit which is provided with the bead mill that is connected through a serial circulating loop relative to a raw material tank and the jet mill that is connected through the serial circulating loop relative to the raw material tank, the bead mill is provided with the following components: input beads, a cylindrical container which causes slurry to flow from an introducing port at one end to a discharging port at the other side, a rotating shaft which is provided with a plurality of approximately separated disc-shaped rotating blades for mixing, and a driving device of the rotating shaft. The container and the rotating shaft which is configured on the central axis of the cylinder incline for a preset angle relative to the vertical direction.

Description

technical field [0001] The present invention relates to a micronizing device for micronizing raw material particles through combined treatment with a jet mill and a bead mill. Background technique [0002] Conventionally, when various raw material particles are micronized, pulverization and dispersion treatment of the raw materials is performed with a high-pressure homogenizer (for example, see Patent Document 1), a wet jet mill, a bead mill, a ball mill, or the like. [0003] The wet jet mill pressurizes the raw material to 245MPa by using hydraulic jet, and sprays it at a high speed from a fine nozzle with a diameter of 0.1-0.5mm, so that the particles collide with each other or to the hard body during the jet, pass through the nozzle and The shearing force generated by the opposite flow and the impact force generated by the jet cavitation phenomenon carry out the pulverization and dispersion of the secondary particles mainly composed of primary particles (for example, ref...

AI Technical Summary

Problems solved by technology

[0016] However, in the case of simply connecting existing devices to each other, the overall device structure is enlarged, and there is a large dead volume in the device.

Especially in the container of the bead mill, the existence of microbeads produces partial bias, and it is difficult to obtain a uniform particle size distribution of the pulverized raw material

Moreover, when performing continuous processing, it is necessary to operate the device for a long time. If damage occurs in the liquid seal portion sealing the rotating shaft and the periphery of the bearing between the container and the drive system, the slurry may flow into the damaged seal. part, resulting in the possibility of mixing impurities

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