| 摘要 |
Grain size distributions of bulk goods are determined in accordance with DIN 66165-2 by means of sieve analysis. For that purpose, test sieves having specific, mostly square, mesh openings are stacked, starting with the smallest mesh size, from bottom to top. The sample is placed in the top-most sieve and subjected to a defined movement for a specific time. Said methods have plenty of potential sources of error and cannot always be clearly reproduced. In order to circumvent said disadvantages, the invention provides a method for determining a particle property, in particular a fraction classification, of a first particle, in particular of the first particle of a particle charge, wherein the method comprises the following steps: optically recording the first particle from different positions by means of an optical system; transforming the optical recording into a spatial representation that comprises in particular a projection surface and height information; and determining the particle property. |
