Laser particle size analyzer for measuring the particle size distribution of coal powder
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Dear sea friends, may I ask whether the particle size distribution determined by a laser particle size analyzer is expressed as a percentage by weight or by volume of coal powder? Is there any way to convert it into a percentage by weight? According to the instructions, it refers to the optical density; the report provides the median particle size and the volume-averaged particle size. Is D0.5 the particle size at which half of the particles account for half of the total volume, or is it the particle size at which half of the particles account for half of the total number? :dizzy:
I get it roughly; it seems to be a volume percentage, hehe. I’m sorry; the question was too simple, so no one answered me. :funk:
It’s D50, right? . . For example, if D50 is X, it means that particles with a size greater than X and those with a size smaller than X each account for 50% of the particles in the material being measured. (Volume) to convert it to a mass particle size, just divide the volume particle size by the density of the coal powder. It should be included in the instructions
The results of the sieving method are a mass cumulative distribution, while those of the laser particle size analyzer are a volume cumulative distribution. Since the same material has the same true density, the weight cumulative distribution is identical to the volume cumulative distribution. For specific details, refer to the research on \"Grain Size Testing Techniques for Water-Coal Slurries\".