Category Archives: Jenike Blog

If You’ve Seen one Sample, You’ve Seen ‘em all – Right?

Some people ask that, “If J&J tested one sample of say sugar, we must have tested it all – can’t we just use historical data?” This question has come up for many materials such as iron ore, limestone, bran, flour, and microcrystalline cellulose, … Continue reading

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Do We Take Powders for Granted?

  Whenever I have too much self esteem, I like to go home and visit my parents. And so I took a few vacation days to travel to my hometown of Salida, Colorado, where my father asked me if I … Continue reading

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Jenike Centennial is a Time for Reflection

  1914 — 100 years ago – was a time of tremendous change. Henry Ford opened the world’s first assembly line (for the Model T). The world’s first airline, St. Petersburg Tampa Airboat Line, started operation. W.H. Carrier patented the … Continue reading

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Should You Re-Purpose That Silo?

  Recently I was in Houston teaching an AIChE course on flow of solids in bins, silos and hoppers. During our discussions, repurposing of plant equipment, such as using an existing pump for a new process line, a liquid storage … Continue reading

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Vibrators – Did it Work for You?

  Vibrators are commonly used in many industries as “flow aids” or “flow promoters” for bulk solids. The chronology of vibrator use often goes like this: 1) a particular bulk solid is put inside a bin without regard for the … Continue reading

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The Trials Of A Trial And Error Approach

Let’s set the stage…you’re an engineer at a manufacturing company that handles a bulk solid material at some point in your production chain. Many of your colleagues are also engineers, and very intelligent ones at that. You and your co-workers are … Continue reading

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Gone With the Wind or Slipped Through the Cracks

  If you are handling a blend of powder ingredients such that some of the ingredients are relatively fine and others are coarse, did you ever experience that the ingredients were separating during handling? Were you ever left wondering where … Continue reading

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Tall and Slender vs. Short and Squat

  Have you ever wondered why silos are generally tall and slender while oil tanks are short and squat? Take a look at the two images below…compare the height-to-diameter ratios for the different vessels. So, why do you typically see … Continue reading

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I Can’t Get Away From Bulk Solids … or my Co-Workers … Even on the Weekend!

  They are everywhere. Or at least their footprints. I wake up Saturday morning looking at my alarm clock. The plastic case, the magnet in the speaker, the glass face – were all bulk solids once. The very fact that … Continue reading

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What’s the Number One Rule of Powder Handling?

The number one rule of powder handling is that there are exceptions to every rule! Consider wall friction. In order to achieve mass flow and prevent ratholing, the walls of a hopper must be steep enough and low enough in … Continue reading

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