SUBJECT
Bulk Solids Characterization
Publications on the measurement and interpretation of bulk powder properties relevant to flow, storage, handling, processing, and product performance.
PUBLICATIONS
Browse publications
Explore PTI articles, Insights, Know How, and technical publications related to this subject.
28 October 2026Can a Screw Feeder Generate Fines Without Milling?
Yes. A screw feeder can generate fines with no milling step anywhere [...]
26 October 2026Why Can Higher Obscuration Create False Fines?
A finer PSD at higher obscuration does not automatically indicate better dispersion [...]
24 October 2026Rotary Valve Failure Modes: How Powder Properties Drive Leakage, Wear, and Jamming
When a rotary airlock valve leaks, wears, or jams, the cause usually lies in the powder rather than the equipment. This insight maps cohesion, abrasiveness, bulk density, and particle size distribution to distinct failure patterns and explains what each pattern tells you about the powder state.
Insights
23 October 2026Why Can XRF Results Change With Particle Size?
A reported XRF concentration depends on the prepared specimen as well as its [...]
22 October 2026Why Do BET Results Change With Degassing and Adsorptive Gas?
A BET surface area reflects how the sample was prepared and which adsorptive [...]
21 October 2026Why Does an NIR Moisture Reading Shift When Particle Size Changes?
NIR moisture predictions depend on both water absorption and light scattering. Changing [...]
19 October 2026Why Does Pouring Method Change Bulk Density?
Loose bulk density depends on how powder enters the measuring container. Funnel [...]
17 October 2026Why Can a Powder Lot Pass Sampling and Still Be Contaminated?
September 2026's moringa leaf powder recall, set against a year of Salmonella events touching powdered milk and supergreens blends, shows why bulk powder sampling plans can miss low-prevalence contamination and why low water activity slows but does not eliminate pathogen survival.
Insights
17 October 2026LFP Cathode Powder Production: How Spray-Drying, Calcination, and Pulverization Set Particle Size and Tap Density Targets
LFP cathode powder quality is built in stages, not inspected at the end. This article follows the precursor-to-powder route and shows why particle size distribution and tap density are the measurements that actually tell you whether the synthesis worked.
Feature Article
16 October 2026Refractive Index in Laser Diffraction: D10 vs D50
Laser diffraction calculates particle size from measured scattering using an optical model [...]
15 October 2026Why Can Permeability Fall After Milling?
Milling can reduce powder-bed permeability even when the material meets its [...]
12 October 2026Why Does Tapped Density Change With Fill Mass?
Increasing fill mass can raise or lower measured tapped density, depending on [...]
