100 tonnes of raw material in. 94 tonnes of finished product out. Where did the other 6 tonnes go?
Your material balance says "processing loss—within tolerance." Your accountant files it under "COGS variance." Your plant manager shrugs. "Powder gets everywhere. It's normal."
At Doebritz-Tec, we've audited material balances in powder plants around the world. And we can tell you: That 6% isn't "processing loss." It's equipment failure. And it's costing you more than you think.
Here's where the 6% actually goes—and how much each leak costs you:
Your dust collector captures powder from the air. But what happens to it? In many plants, the collected powder is:
The cost: At $5/kg, 2% loss on a 10,000 tonnes/year plant = 200 tonnes × $5,000/tonne = $1,000,000 per year. Gone. In the trash.
The Doebritz difference: We design dust collection systems with continuous liner discharge—every gram collected goes directly into a sealed bag, labeled by batch, tested, and returned to the product stream if within spec. Zero waste. 100% recovery.
As we covered in our sticking article, powder clings to mixer walls, mill housings, and hopper surfaces. At the end of a batch, you scrape it off. But you don't recover it into the saleable product. It goes into the "rework" bin—or the trash.
The cost: 1.5% loss on a $50M/year plant = $750,000 per year.
The Doebritz difference: Our vertical mixers and cone mills have mirror-polished surfaces (Ra ≤ 0.4 µm). Powder slides off. Zero scraping. 100% of the batch discharges into the container.
As we detailed in our breathing article, every rotation of a standard rotary valve pushes a microscopic puff of powder through the shaft seals. Over a year, that's kilograms of product on the floor, in the bearing housing, and in the air.
The cost: 0.8% loss on $50M = $400,000 per year.
The Doebritz difference: Our Air Purge Rotary Valves keep product inside the valve. Zero puff. Zero floor dust. Zero bearing contamination.
Powder trapped in dead corners (as covered in our cross-contamination article) doesn't make it to the product stream. It sits there until the next CIP cycle, when it's washed down the drain or wiped into a waste bin.
The cost: 1% loss on $50M = $500,000 per year.
The Doebritz difference: Our equipment has zero dead corners. Every surface is radiused. Every weld is flush. Every particle moves. Nothing sits. Nothing is wasted.
Because of segregation (our mixer article), the first and last portions of your discharge are off-spec. You blend them back. Re-mix. Re-test. Some of it gets sold as "B-grade." Some of it gets discarded. All of it cost you money to make.
The cost: 1.5% loss on $50M = $750,000 per year.
The Doebritz difference: Our vertical mixers discharge uniformly. First bag = last bag. Zero giveaway. Zero reprocessing.
Add it up:
| Loss Source | Typical Loss | Annual Cost ($50M plant) |
|---|---|---|
| Dust collector waste | 2.0% | $1,000,000 |
| Sticking to walls | 1.5% | $750,000 |
| Rotary valve puff | 0.8% | $400,000 |
| Dead zone residue | 1.0% | $500,000 |
| Reprocessing giveaway | 1.5% | $750,000 |
| Total Hidden Loss | 6.8% | $3,400,000 |
You're losing $3.4 million a year on a $50 million plant. That's not "processing loss." That's profit walking out the door.
Every piece of Doebritz-Tec equipment is designed with one question: "Where could product hide, leak, or get wasted?" Then we eliminate every answer.
Calculate your real yield. Not the number in your ERP system. The actual number:
A food powder plant reported a 98.2% material yield to corporate. Doebritz-Tec was called in for an efficiency audit. We did a physical mass balance over 5 consecutive batches:
Where did the other 7% go?
The Doebritz Intervention:
The Result: Yield increased from 91.2% to 97.8%. On a $30M/year plant, that's an additional $1.98 million in saleable product. The equipment upgrades paid for themselves in 4 months.
In powder processing, margin isn't made on the sell price. It's made on the yield. Every percentage point of recovery drops straight to the bottom line.
You can't eliminate all loss. But you can eliminate the 6% that's caused by equipment design. And that 6% is worth millions.
At Doebritz-Tec, we don't just build machines that process powder. We build machines that don't waste it.
Stop giving your product away. Start recovering every gram.
