Cleaning Feed Grain. Remove Dust and Chaff, Keep Useful Grain

Feed-bound grain still benefits from trash removal

Grain already destined for livestock feed can still benefit from removing dust, chaff and debris. Screens separate unwanted material by size; controlled airflow separates lighter material into a different output. The goal is to take out the trash while retaining useful grain—not to grade the lot for sale or planting.

Choose by what needs to leave

Start by looking at the uncleaned grain and identifying the unwanted material.

When debris differs enough in size from the grain, screening fits the job. A standalone Metra VDSC removes debris, chaff and dust through size-based screening. It is Metra’s lower-priced option than ADS or ADS-CDC when screening is sufficient.

When the target is lighter unwanted material, consider Metra ADS airflow cleaning or ADS-CDC. These cleaners separate material by how it responds to controlled airflow. Mass, shape, dimensions and density all affect that response. Adjustable airflow lets the operator tune the separation to the grain and trash rather than relying on size differences alone.

For example, size-different debris points toward screening. Light chaff that is difficult to separate by size points toward airflow. The fact that both lots are going to feed does not make them the same cleaning job.

Set the cleaning target around useful grain

For this job, target the dust and chaff—not just the largest or heaviest grain fraction. The ADS manual’s preliminary-cleaning guidance calls for adjusting airflow so clean grain does not leave with the light impurities. ADS output baffles also let the operator direct grain into selected trays.

Compare the original grain with the retained and removed material. Look for less trash in the retained grain, and check whether useful grain is leaving with the removed material. That side-by-side look helps judge the separation and guide adjustments; it is a visual check, not a grain-retention measurement.

Account for dust collection

ADS-CDC adds a cyclone dust collector, which cleans the operating air and directs dust, chaff and other waste to dedicated waste trays. ADS without CDC uses the same airflow separation principle but has no cyclone. That configuration is specified for outdoor use because dust exits with the air. Consider where the cleaner will operate as well as what it needs to remove.

Try your feed-grain lot before choosing equipment

Arrange a free test of your own grain with Metra to see dust and chaff separation and evaluate the retained and removed material. You do not need to choose a machine first. The team can use your sample, intended output, throughput and site needs to recommend suitable equipment and settings.

Contact [info@graincleaner.com](mailto:info@graincleaner.com). Your Metra manager will confirm the sample and shipping arrangements, including any associated costs, before you send it.