# Why and How Is Steam Used in Feed Pellet Conditioning?

Source: [https://www.stilsan.com/en/blog/yem-pelet-kondisyonlamada-buhar](https://www.stilsan.com/en/blog/yem-pelet-kondisyonlamada-buhar)

Published: 2026-08-14

Last updated: 2026-08-14

In steam conditioning before the pellet press, steam quality, condensate management, product formulation and conditioner residence time are as important as flow rate.

## What is the purpose of the conditioning stage?

The ground product gains heat and moisture in a controlled manner before entering the pellet press. This step can affect how the product behaves as it enters the press. The target outlet conditions are determined by the type of feed or biomass, the formulation, and the technical limits of the conditioner and press manufacturer.

## Steam flow rate alone is not a sufficient quality measure

Steam that carries water droplets into the conditioner, has unstable pressure or condenses extensively in the line may contribute to uneven wetting. Line insulation, proper slope, a separator and condensate drainage are as important as generator capacity.

## What production data is required for the calculation?

The line capacity in kg/h, product type, initial moisture and temperature, target conditioner outlet conditions, residence time, existing manifold pressure, line length, shift duration and peak load should be provided. General ratios are intended only for the initial assessment; model selection should be based on actual production data.

## Control, condensate and simultaneous consumption

The steam valve and product flow should operate in coordination. When the line stops or the flow rate changes, the behavior of the steam supply, low-load stability and condensate during initial start-up are evaluated. If other points are supplied by the same generator, the coincidence of peak demands should also be calculated.

## How is performance verified?

The conditioner inlet and outlet temperature, product moisture, flow rate, energy consumption and press behavior are monitored during trial production. Pellet durability, increased capacity or hygiene results cannot be guaranteed by the generator alone; the entire line and formulation must be verified together.

## Frequently asked questions

**How much steam is required for one ton of feed?**

There is no single universal ratio. The product formulation, initial and target moisture and temperature, conditioner and line losses change the actual requirement.

**Should dry steam be supplied to the conditioner?**

The aim is to deliver steam without free water droplets and under stable conditions. The suitability of the line, insulation, separation and condensate drainage should be evaluated.

**Can an electric generator be added to an existing pellet line?**

It can be technically evaluated if the actual steam demand, conditioner connection, pressure conditions, line and electrical infrastructure are suitable.

**Does steam guarantee pellet quality?**

No. It supports controlled conditioning; final quality is the result of the entire line, including the raw material, grinding, formulation, conditioner, press and cooling.

## Technical sources

1. ANDRITZ Feed & Biofuel. [Conditioners for Feed Pelleting and Extrusion](https://www.andritz.com/products-en/newsroom-de/feed-biofuel/conditioners)
2. ANDRITZ Feed & Biofuel. [Animal Feed Manufacturing Handbook](https://discover.andritz.com/rs/157-EGK-904/images/Animal%20Feed%20Manufacturing%20Handbook.pdf)

## Related solution

[Steam Conditioning in Feed and Pellet Lines](https://www.stilsan.com/en/solutions/yem-pelet-kondisyonlama-icin-buhar-jeneratoru)