Flow Improvement in Animal Feed — Diagnosing Bridging, Rat-Holing and Bin Blockage

Direct answer

Most feed flow failures are not additive failures. Before changing a flow agent, identify whether the problem is moisture, particle size distribution, fat coating, or bin geometry — each has a different fix, and only some of them respond to feed grade silicon dioxide, bentonite, or zeolite.

A short diagnostic sequence

1. Measure moisture at the point of failure, not at intake. Condensation in a cooled bin will defeat any inclusion rate.
2. Check the fines fraction. Excess fines increase interparticle contact area and promote bridging; screening often solves more than dosing.
3. Check fat and molasses addition order. Liquid applied before the dry carrier is mixed produces coated agglomerates.
4. Check bin geometry and discharge angle. Funnel flow and shallow cone angles cause rat-holing regardless of the additive.
5. Only then adjust the flow agent — chemistry, inclusion rate, and where it enters the mix.

Where the additive genuinely helps

Hygroscopic micro-ingredients, trace mineral premixes, and bagged product held through temperature cycles are the cases where an anti-caking carrier reliably restores discharge and keeps dosing accurate.

What to record before requesting a quotation

Product being conveyed, bulk density, current moisture, current inclusion rate, observed failure point (bin, auger, bagging, on-farm), and the storage climate. Those five data points determine which grade is realistic to trial.