Aluminum-containing particles

Abstract

To provide aluminum-containing particles having improved fluidity.SOLUTION: There are provided aluminum-containing particles, wherein a D50 particle size calculated by the following <particle size measurement> is 30.0 μm to 60.0 μm, a value obtained by dividing a D90 particle size by a D10 particle size is 1.5 to 3.5, the D90 particle size and the D10 particle size being calculated by the following <particle size measurement>, and an apparent density measured in accordance with JIS Z 2504:2020 using a funnel angle of 60° and an orifice having a diameter of 5.0 mm is 1.35 g / cm3 or more. <Particle size measurement> 3.0 g of aluminum-containing particles are mixed with 40 mL of water and 10 mL of a 1.3% concentration surfactant, and a mixed liquid dispersed in an ultrasonic bath for 300 seconds is used as a measurement sample. Using a laser diffraction / scattering particle size analyzer, the volume-based particle size distribution of the aluminum-containing particles is measured, and values of the D10 particle size, D50 particle size, and D90 particle size are respectively obtained.SELECTED DRAWING: None

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