Conveying

When a clean-looking powder line still produces contaminated product, compare sample location with when the contaminant appears, then investigate suspected reservoirs with recovery-tested surface or rinse sampling.

A uniform blend can develop a particle-size gradient while flowing through a [...]

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.

CFD-DEM simulations show triboelectrically charged particles can reverse direction in low-drag duct corner zones during pneumatic conveying, with the delay between feed pulses driving the effect more than pulse length.

Vacuum conveying contains by default: any breach draws air inward rather than pushing powder out. That containment advantage comes with a fixed pressure budget, and filter design competes directly with conveying velocity for every millibar of available driving force.

Dense-phase and dilute-phase pneumatic conveying create different particle contact mechanics, and the resulting attrition and segregation risk depends on velocity, solids loading ratio, and the powder's own attrition sensitivity, not on a fixed assumption about which mode is gentler.

Rotary airlocks function as pressure boundaries as much as metering devices. The rotor tip clearance governs particle attrition at the nip zone and the rate of fine-particle bypass under differential pressure. As clearance widens through wear, the downstream particle size distribution shifts in a pattern frequently misread as upstream process variation.

Do not diagnose a feeder as if the hopper sends it one [...]

Powder instability after conveying, filling, or transfer is often treated as [...]

Real-time particle characterization is moving powder processing from delayed laboratory checks toward [...]

Fine powder fluidization can support controlled pneumatic conveying, especially in dense phase [...]

Powder segregation diagnosis starts by locating where the blend loses uniformity. Some [...]