How to calculate average particle size?
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I have been studying *national standard documents recently, which contain formulas for calculating the average particle size, diameter, and various moments based on the particle size distribution. However, it’s quite confusing to understand them; the main reason is that my knowledge of advanced mathematics from college isn’t solid enough. Could any teacher help me out? The question is as follows: How to calculate the average size of urea particles? Given the specified interval and interval content. Thanks first:P
Which specific national standard document is it? Send out the file for everyone to take a look, so we can help you solve it. This is too abstract; I have no idea what’s going on~~~
It’s the GB/T 15445-1995 standard; the teacher said that it’s necessary to calculate the range of contents, although the formula is provided. It’s a pity that advanced mathematics is so difficult
Create a particle size distribution using a histogram, and then calculate the particle size of urea using a weighted average
By carefully studying the examples shown in Appendix A of GB/T 15445-1995, the calculation is not difficult! Just calculate the example step by step on your own; don’t be intimidated by the formulas. Those derivative and integral formulas aren’t needed in practical applications – they are only used for theoretical derivations. :lol
The particle size range can be divided into several intervals for analysis, which is practical in production; there is no need to calculate the average particle size. The particle diameter of urea can be divided into several ranges: below 0.85 mm, 0.85–1.4, 1.4–2.0, 2.0–2.8, and over 2.8.
Thank you all above; I have passed this section of the exam~ I ended up using an Excel formula format to simply enter the numbers~~ -0-