flow function Archives

Screw Feeder Dosing Accuracy and Powder Compressibility: Why the Same Screw Behaves Differently on Similar Products
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Screw Feeder Dosing Accuracy and Powder Compressibility: Why the Same Screw Behaves Differently on Similar Products

Bulk Solids Characterization, Flowability, Hoppers, Insights, Mixing technology

Screw Feeder Dosing Accuracy and Powder Compressibility: Why the Same Screw Behaves Differently on Similar Products

The same screw feeder at the same speed can deliver consistently on one powder and drift by several percent on another. The difference lies in compressibility, wall friction, and cohesion, and in how bulk density shifts as the hopper empties.

By Martijn Daalder|2026-07-04T11:38:23+01:004 July 2026|Categories: Bulk Solids Characterization, Flowability, Hoppers, Insights, Mixing technology|Tags: bulk density drift, Carr's Index, Compressibility Index, dosing accuracy, feeder selection, fill factor, flow function, Hausner Ratio, loss-in-weight feeder, powder compressibility, screw feeder, wall friction|0 Comments

Diagnosing and Solving Free-Flowing Powder Arching and Blockage in Hoppers
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Diagnosing and Solving Free-Flowing Powder Arching and Blockage in Hoppers

Feature Article, Flowability, Hoppers

Diagnosing and Solving Free-Flowing Powder Arching and Blockage in Hoppers

Free-flowing powders can form stable arches and block [...]

By Stephane Sloots|2026-06-27T14:42:25+01:004 April 2026|Categories: Feature Article, Flowability, Hoppers|Tags: critical arching diameter, flow function, free-flowing powder arching, funnel flow, hopper arching, hopper blockage, mass flow, powder flow troubleshooting, shear cell test, time consolidation, unconfined yield strength, wall friction|0 Comments

Why Free-Flowing Powders Still Arch in Hoppers, and How to Diagnose the Real Cause
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Why Free-Flowing Powders Still Arch in Hoppers, and How to Diagnose the Real Cause

Editors pick, Feature Article, Flowability, Hoppers

Why Free-Flowing Powders Still Arch in Hoppers, and How to Diagnose the Real Cause

A powder can look easy to handle in [...]

By Stephane Sloots|2026-06-27T14:42:30+01:0014 March 2026|Categories: Editors pick, Feature Article, Flowability, Hoppers|Tags: bulk solids handling, critical arching dimension, flow function, free-flowing powders, funnel flow, hopper arching, hopper outlet design, mass flow, powder blockage, powder flow testing, shear cell testing, time consolidation, unconfined yield strength, wall friction|0 Comments

Powder Caking vs Compaction Test: That Tells You Which Problem You Have
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Powder Caking vs Compaction Test: That Tells You Which Problem You Have

Bulk Solids Characterization, Caking, Compaction, Flowability, Insights

Powder Caking vs Compaction Test: That Tells You Which Problem You Have

Powder caking vs compaction can look identical in [...]

By Stephane Sloots|2026-01-16T20:55:41+00:0017 January 2026|Categories: Bulk Solids Characterization, Caking, Compaction, Flowability, Insights|Tags: bulk solids QA, flow function, humidity exposure, powder caking, powder caking vs compaction, powder compaction, Powder troubleshooting, ring shear testing, shear cell testing, storage stability, time consolidation, unconfined yield strength, vibration effects|0 Comments

Powder Flow vs. Powder Flooding: Where’s the Line?
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Powder Flow vs. Powder Flooding: Where’s the Line?

Flowability, Insights, Segregation

Powder Flow vs. Powder Flooding: Where’s the Line?

Powder Flow vs. Powder Flooding: An Introduction [...]

By Stephane Sloots|2025-07-09T11:10:27+01:009 June 2025|Categories: Flowability, Insights, Segregation|Tags: cohesive powders, feeder design, flow function, flowability, free-flowing powders, Jenike cell, powder flooding, powder handling, uncontrolled discharge|0 Comments

Bulk Powder Characterization for Silo Storage
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Bulk Powder Characterization for Silo Storage

Bulk Solids Characterization, DSS_Featured, Dustiness, powders, Rotating Drum, Segregation

Bulk Powder Characterization for Silo Storage

In this article, we will cover Bulk Powder [...]

By Martijn Daalder|2025-02-19T12:09:11+00:002 February 2022|Categories: Bulk Solids Characterization, DSS_Featured, Dustiness, powders, Rotating Drum, Segregation|Tags: bulk crushing strength, Delft Solids Solutions, dustiness, enriromental factors, flow behavior, flow function, hopper angle, particle wear, production, production process, robotic compression tester, rotating drum, segregation, storage, wear behavior|0 Comments

Sugar, size and everything nice
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Sugar, size and everything nice

Caking, DSS_Featured, Food Industry, Granules, powders, Shear

Sugar, size and everything nice

Sugar flowability is closely tied to particle size [...]

By Martijn Daalder|2025-07-23T17:41:30+01:0031 January 2022|Categories: Caking, DSS_Featured, Food Industry, Granules, powders, Shear|Tags: agglomerative, caking, Delft Solids Solutions, flow function, flowability, hopper angle, particle size distribution, powder testing, shear testing, sugar|0 Comments

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Screw Feeder Dosing Accuracy and Powder Compressibility: Why the Same Screw Behaves Differently on Similar Products

Diagnosing and Solving Free-Flowing Powder Arching and Blockage in Hoppers

Why Free-Flowing Powders Still Arch in Hoppers, and How to Diagnose the Real Cause

Powder Caking vs Compaction Test: That Tells You Which Problem You Have

Powder Flow vs. Powder Flooding: Where’s the Line?

Bulk Powder Characterization for Silo Storage

Sugar, size and everything nice