Oilseed Roaster

Short answer: An oilseed roaster heats and conditions seed before hot pressing so it reaches the press at the moisture and temperature that release oil most easily. The seed type, the heat source you have, the outlet moisture and temperature you need, and the press throughput it must keep up with decide the design.

How it works

In a drum roaster, seed is fed into a rotating drum heated from outside or by hot air. Internal flights lift and turn the seed so it heats evenly, and an exhaust removes steam and smoke. The operator or controller adjusts temperature, drum speed and residence time to reach the target degree of roasting. At the end the seed is discharged, either into a cooler for flavour-led oils or straight into the press.

A stack cooker has several heated pans stacked vertically. Seed enters at the top and is swept down from pan to pan; steam or water can be added at the upper pans to adjust moisture, and the lower pans dry it to the target. A continuous conditioner uses a heated screw or belt to keep a steady flow into the press.

Whatever the design, the roaster and the press work as a pair. If seed arrives at the press too dry, the cake becomes hard and the press works harder; too wet, and the oil comes out cloudy and the cake is soft. For this reason we size the roaster around the press capacity and agree the outlet conditions during commissioning with your seed.

Which configuration fits

Form	Suits	Watch out for
Drum roaster	Sesame, groundnut, flavour-led oils	Roast control; burnt flavour risk
Stack cooker	Rapeseed, sunflower, cottonseed, larger presses	Needs steam supply
Continuous conditioner	Steady feeding of a single press	Less control of roast flavour

What we need from you to quote

• Seed types and their moisture on arrival
• Whether you want roast flavour or mainly conditioning for yield
• Heat source available and fuel prices
• Target outlet moisture and temperature, if known
• Throughput measured on seed input, and the press you will use
• Space, exhaust options and power supply

Where it sits in a line

The roaster sits between oilseed cleaning equipment and a screw oil press or hydraulic oil press. In a sesame oil production line, roasting is the step that sets the aroma.