Crop Roasting Machine Types and Selection Guide.

I visited dozens of small and medium-sized oil mills in West Africa and Southeast Asia, and one sentence always lingered in my mind: the baking step can make or break the entire hot oil pressing process. Poor roasting often not only impairs flavor and mouthfeel but also prevents the oil from reaching the optimal temperature for full oil release(optimal hot-pressing temperatures vary by crop type). The result is a large amount of unsatisfactory oil, resulting in a loss of economic efficiency. This is the reason why, each time, we remind people about the necessity to select the roasting machine correctly prior to any kind of oil pressing.
Unlike coffee roasters, hot press pretreatment roasting machines are specifically designed for roasting oilseeds and nuts such as peanuts, sesame, and coconut. These oil-pressing raw materials require extremely high temperature control and batch processing. Proper roasting can improve oil yield. The drum roasting machine is one of them that is always a firm favorite owing to its uniform heat distribution and production results. Assuming that you are going to make an upgrade or install your own oil production line, this is the part where your oil yield journey will actually start.

What Types of Roasting Machines Are Used in Oil Production?

I recall one of our customers is a peanut processor in Senegal and he was fighting for months with variances in roasting. In the past, operators would simply load large quantities of seeds into a basic roasting oven, hoping they would roast evenly. However, this often resulted in under-roasted or burnt seeds, leading to lower oil yield and wasted raw materials. There are numerous roasting machines in the market and not all of them suit the realities of the small and medium size oil mills, particularly those milling peanuts, soybeans, or coconuts. There are machines that cater to the industrial giants or even coffee roasting which is inappropriate to the needs of a farm or a local oil pressing workshop. What counts is finding the roasting equipment to suit crop type, production volume and sources of energy available. When it comes to oilseeds roasting and in specific areas such as Southeast Asia, Africa, and South America, three models of roasting machines keep demonstrating their effectiveness.

Drum Roasting Machine.

The drum roasting machine has been the main stay of many medium sized oil seed roasting establishments most notably in areas such as Southeast Asia, Africa and South America. It is structured with a big turning drum that keeps turning and flipping oilseeds, like peanuts, sesame, coconuts, soybeans, and sunflower seeds, to make sure that even heat is present over the mixture. This is continuous circulation which eliminates hotspots and minimizes the risk of singeing, which is essential to preserve the integrity of oilseeds during roasting.
The flexibility of the drum roasting machine is put forth by its eligibility to a variety of energy sources such as gas, coal, wood, and electricity. This qualifies it in farms or small oil factories which have diverse fuel supply.
This machine is practical in small to medium-sized production lines since regular functioning significantly influences the edible oil quality and the yield of extraction. The small to medium-sized production line is characterized by its stable roasting phenomenon as well as efficiency. As a versatile oilseed/nut roaster, its durability and flexibility make it a reliable foundation for most small and medium-sized oil mills.

Drum Roasting Machine:

If you’re looking for a workhorse machine that stands the test of time, our drum roasters are your answer. Constructed with food-grade stainless steel and reinforced carbon steel, these units resist corrosion and wear even under continuous commercial operation. I’ve seen these machines run flawlessly for years across diverse oil mills. The rotating drum design ensures every seed and nut—whether peanuts, sesame, sunflower, or walnuts—receives consistent heat exposure.

Hot Air Roaster.

The hot air roaster works in quite a different concept it is a convective heating process where air is moved through the seeds with the help of heated air as opposed to being in direct contact with a heated surface. It is particularly useful with small or fragile seeds such as sesame and castor beans may easily scorch or lose their flavor in direct flames. Hot air roasters are very sensitive farms and quality would not have been maintained without the precise temperature control it enjoys, where chances of over roasting which is critical to the production of high grade oils which can be bought out in the export market, are minimal.
Although the system requires the continuous running of the energy source and tends to utilize more electricity, its eco-friendly nature in the way it operates since there are no direct flames involved and the reduction of emissions compared to other mechanisms makes it a facility that would be desirable especially to facilities that focus on environmental friendliness. It is however dependent on the right batch size being processed as both underloading the chamber or over loading the chamber will decrease roast evenness. Hot air roasters are still popular for coffee bean roasting. Farm oil mills or medium-sized edible oil processing plants generally prefer drum roasting machines because they are more versatile and can accommodate a variety of crops. Simply setting the timer and requiring less technical skills are essential.

Electric Frying Pan Type Roasting Machine.

Most small or medium-sized oil pressing workshop is not necessarily inclined toward the so-called electric frying pan style roasting machine. Although it has a flat or slightly rounded pan and it is electrically heated, its application in day-to-day roasting of oilseeds in the farms is not efficient. Such machines involve greater technicality and dependable power outage, which does not always exist in many small oil mills located in Southeast Asia, Africa, and South America. Small batch size and high concentration of heating makes such a roaster less efficient and less consistent on a large scale or in a continuous process.

Electric frying pan type roasting machine
Electric frying pan type roasting machine

Our developed electric roasting machines are, on the contrary, an extension of electromagnetic heating technology of roasting machines of drums. They are electric magnetic drum roasting machines, which have even heating throughout and easy to regulate roasting temperature and time. They are manufactured to fit the requirement of small to medium oilseed processors at low cost and easy to user properties to suit local farm oil mills and processing workshops which do not require highly technical skills to operate and do not consume a lot of capital investment.

Electromagnetic Heating Roaster:

For operators who demand exact control over their roasting profiles, electromagnetic heating technology changes everything. What I love about these units is the automatic temperature regulation system—no more guesswork or constant monitoring. The electromagnetic arc heating tubes deliver rapid, uniform heat, while the built-in temperature controller lets you dial in precise settings for different materials. Whether you’re roasting delicate seeds requiring gentle heat or robust nuts needing higher temperatures, this flexibility ensures optimal results every batch.

It might be simple to say, but it can make the whole difference! It all begins with the proper choice of the roasting machine that can turn your oilseed processing around. Its drum roasting machine can be used to roast an extensive variety since it roasts energy effectively and efficiently and is also versatile in roasting many diverse oilseeds; the hot air roaster uses high temperatures and is useful with sensitive high-quality conditions. The classic design of electric frying pan, however, fails many small and medium oil mills due to the lack of consistency and scalability. In its place, an electric magnetic type of drum roaster that is practical, flexible solution, and applicable in the farm-scale level of Southeast Asia and Africa is offered. Based on my experience in supporting different oil pressing workshops, it is important to align your preference of roasting machine with the type of crop you make as well as your production capacity in order to enhance output of edible oil and quality.

 

FeaturesRecommendation
Processing VolumeFamily workshops: under 200kg/day; Small oil mills: 200–500kg/day; Medium factories: 500kg+
Jenis TanamanHigh oil content or prone to scorching: prefer drum roasting machine; Small seeds or light roasting: opt for hot air roasters
Energy SourceStable electricity: electric heating; Remote areas: coal, wood, or gas-fired machines
Investment BudgetStartups: entry-level, temperature-controlled drum roasting machine; Medium-sized factories: large automatic continuous drum lines

Adjusting your choice of roasters to take into consideration these parameters, you not only bring efficiency in the roasting process, but also enhance efficiency in hot-pressed oil pressing and oil yield-which is paramount in the production of quality oils such as soybean oil among others prevalent in Southeast Asia, Africa and South America. Knowing the local environment and scale of production can aid smarter investments, and good outcomes in your seeds roasting workflow.
Selecting the right roasting machine was never about the price tags and other flashy capabilities but it was always about finding the machine to fit the actual needs of the working operation. I have had the opportunity to observe the effect that having the choice of a properly selected drum roasting machine has on production both in small factory like workshops and in larger medium sized factories as well, particularly in areas where sources of energy are different and crops differ as well. The importance of matching machine capacity, energy type, and crop specifics are not only prudent but becomes a necessity to get the maximum oil yield and have a smooth process in oil pressing. If you are planning to start your own oil pressing business, I invite you to check out our more detailed description of oil press types and post-pressing filtration systems for vegetable oils.

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Tanya Jawab Umum

Of course. Our drum roasters can be used to roast a variety of oilseeds and nuts. However, different oilseeds require different roasting temperatures (click here for a guide to hot oil pressing temperatures for common crops) and durations. Users processing a variety of oilseeds must choose a roaster with adjustable temperatures and timers. These flexible settings can help achieve an acceptable roasting level by avoiding burning and under-processing.

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