Peanut Processing Production Line

To enter the field of peanut processing, you must first have a complete understanding of the production process. The product that enters the factory from the farm is typically a mixture of husks, soil, moisture, hollow seeds, and irregular kernels. However, if this raw material is processed correctly and step by step, it can become one of the best-selling products in the nut and snack market.
For those planning to set up a peanut processing production line, the most important thing is to know what happens at each stage of the production line, what input enters the machine, what output is delivered, and how product quality is formed. The difference between a profitable line and a line full of waste is precisely due to differences in details such as the method of shelling, breakage rate, sorting accuracy, roasting uniformity, and flavor control, which we will examine in full detail in this guide from Seifi’s website on the peanut processing production line.

Types of peanuts in Iran

Before selecting the equipment and designing the processing line, you must properly identify the type of peanut that is to enter the production line.

Each growing region has specific characteristics in terms of shape, moisture, texture, and product quality, and these differences affect the efficiency of shelling, sorting accuracy, waste rate, and even the final taste of the product.

Astaneh-ye Ashrafiyeh peanut

Astaneh-ye Ashrafiyeh in Gilan province is the most important and well-known center of peanut production in Iran. This region produces high-quality products due to its light soil, suitable humidity, and the long experience of its farmers. In reliable sources, Astaneh peanuts are introduced as the finest Iranian type and account for a significant portion of the country’s production. Strong flavor, natural aroma, and uniform quality are among the prominent features of this type of peanut.

Hamedan Peanuts

Hamedan is one of the four main peanut-growing regions in Iran and is introduced in official reports as one of the production hubs. The climatic conditions of this region produce a product suitable for raw consumption and industrial processing. Hamedan peanuts are usually cultivated in large volumes and play an important role in supplying the domestic market due to their adaptability to the region’s climate.

Minudasht Peanuts (Golestan)

Minudasht in Golestan Province is also an important peanut-producing region in the country. Due to its fertile soil and warmer climatic conditions, this region produces a product with stable quality suitable for industrial processing. In reliable sources, Minudasht is introduced as one of the four main peanut-producing regions in Iran, accounting for a significant share of the country’s annual production.

Zahedan Peanuts

Zahedan is also listed among the main peanut-producing regions. The hot and dry climate of this region produces peanuts with different characteristics compared to the northern regions. This product is widely cultivated in Zahedan and is recorded in official statistics as one of the four main peanut-producing regions in Iran.

What is a peanut processing production line?

The peanut processing production line is a set of machines and continuous processes that transform raw peanuts with their shells, soil, moisture, and impurities into a marketable, standardized, and packaged product.

This line typically consists of several main stages, each with a specific input, operation, and output. Below, we explain this process in detail, step by step:

Stage 1: Receiving and Dumping Raw Peanuts

In the first stage, freshly harvested or farmer-purchased peanuts (usually with husks, soil, leaves, and impurities) are dumped into the primary hopper and enter the line in a controlled manner.

Stage 2: Shelling

At this stage, the peanuts enter the peanut shelling machine. This machine uses pressure rollers or special blades to open the husk and separate the kernel. Pressure adjustment is very important at this stage to prevent kernel breakage. After the shelling operation, the output will be peanut kernels, shells, and husks separated.

Stage 3: Cleaning and Impurity Separation

In the peanut cleaning machine, several processes occur simultaneously to separate peanut kernels from waste:
● Airflow separation (fan)
● Separation with vibrating screens
● Separation based on weight and volume
The output of this machine is clean kernels without impurities, light waste (shells, leaves, soil), and hollow or defective peanuts. What is needed at this stage is clean peanut kernels, while waste is typically discarded.

Stage 4: Sorting and grading

Peanuts must be separated based on size and kernel health in a peanut sorting machine, a process called sorting. In advanced lines, this is done using optical cameras and color sensors. The output at this stage includes:
● Grade 1 peanuts (uniform and suitable for packaging)
● Grade 2 peanuts (suitable for roasting or flavoring)
● Waste peanuts (for oil extraction or animal feed)

Stage 5: Roasting

At this stage, the graded raw peanuts are heated in a roasting machine with hot air. Temperature control is highly important at this stage to prevent burning, bitterness, and to ensure uniform color.

Stage 6: Salting or Flavoring

In a salted or flavored peanut production line, the roasted peanuts from the previous stage must be placed in a flavoring machine with salt, spices, or other flavorings such as lemon, barbecue seasoning, Persian hogweed, or pepper. 360-degree spraying ensures that the flavor is evenly distributed on all kernels. An important point to note is that the profit margin for roasted or flavored peanuts is higher than for raw products.

Stage 7: Cooling

Hot roasted peanuts must be cooled before packaging. Therefore, in the cooling tunnel, the peanuts are cooled with a stream of cold air.

Stage 8: Packaging

At this stage, the processed peanuts are packaged. This step includes weighing, filling, sealing, and printing dates and product information. Finally, the final product is sold in packages ranging from 30 grams to 10 kilograms.
Setting Up a Peanut Production Line
For setting up a standard production line, there are three main stages:

Choosing Production Capacity

The typical capacity of industrial lines ranges from 300 to 1500 kg per hour. Small workshops usually choose capacities of 300 to 500 kg, while factories require higher capacities.

Choosing the Final Product Type

The output of a peanut processing line includes salted peanuts, flavored peanuts, raw kernels, slivers, peanut butter, and bulk or supermarket packaging. In other words, the type of product determines which machines are required.

Selecting Equipment and Manufacturer Brand

At this stage, the quality of the machines determines the profitability of peanut production. Poor-quality machines cause excessive breakage, high waste, and product quality decline. The peanut processing line machines from Seifi Industrial Group are all made from high-quality materials and, with maximum efficiency, cause the least damage and defects to peanuts and other nuts.

What machines are included in a peanut production line?

In a peanut production line, depending on the scale of operation, peanut volume, and type of output, various machines are used. Below, we introduce each one:

Peanut Sheller Machine

This machine is the first stage of the production line and separates peanuts from their husks. In the Seifi Industrial Group’s peanut sheller machine, the shelling system is designed with anti-wear rubber rollers, which significantly reduce kernel breakage. This machine separates approximately 100 to 200 kg of peanuts from their husks per hour with less than 5% kernel breakage.

Peanut Cleaning Machine

This machine is used to separate soil, gravel, shells, waste, and hollow peanuts. The Seifi peanut cleaning machine features a turbine fan system with 95% efficiency that separates impurities with high precision.

Peanut Sorting and Grading Machine

Sorting is one of the most important pieces of equipment in peanut production. Peanut sorting machines grade peanuts based on size and kernel health. In advanced models, sorting is done with optical sensors and HD cameras, achieving up to 98% accuracy. This high precision increases the selling price of the final product.

Conveyor Elevator Belt

The conveyor elevator belt is responsible for transferring products between machines. In modern lines, conveyors reduce energy consumption, reduce the need for manpower, and increase production speed. Seifi’s conveyor belts are made with hygienic PVC belts and energy-efficient gear motors.
Peanut Processing Line Price and Factors Affecting It
The price of a peanut processing line depends on various factors, and a fixed price cannot be provided. The most important factors affecting the line price are:

Production Capacity

The higher the capacity, the higher the price of the machines. For example, a 300 kg/h line is approximately 40% cheaper than a 1000 kg/h line.

Type of Machines

The type and technology used in the machines significantly affect the production line price. For instance, optical sorting is more expensive than mechanical sorting, and rubber-roller shellers are costlier than metal models but reduce breakage by half. Therefore, when purchasing peanut processing equipment, in addition to price, you should also consider the type of output and how the machines operate.

Automation and Intelligence Level

Automatic lines with PLC have a higher price but are more popular due to lower energy consumption, minimal human error, and higher production speed.

Manufacturer Brand

Well-known and reputable brands have higher prices compared to ordinary manufacturers due to build quality, proprietary technology, and after-sales service, but in the long run, they significantly reduce maintenance costs and waste.

Final Product Type

A line for salted and flavored peanuts requires more equipment such as roasters, flavoring machines, salt tanks, etc. Therefore, the cost of equipping this line is higher compared to a raw peanut processing line.

Why the Peanut Production Line from Seifi Industrial Group?

Seifi Industrial Group is one of the most reputable manufacturers of nut processing equipment in Iran.

The machines manufactured by this group hold a very special position among domestic customers due to reducing kernel breakage to a maximum of 5% through their proprietary roller design and controlled pressure system, and most importantly, 98% sorting accuracy.
Seifi Industrial Group offers extensive after-sales services to its customers, from parts supply and repairs to full line installation and operator training, all handled by the group. Ultimately, by using Seifi machines, you can increase peanut production profitability and reduce operational costs of the production line.
Most Important Challenges in Industrial Peanut Processing
Setting up a peanut processing line is highly profitable if challenges and issues are addressed. Therefore, it is better to understand the challenges of this path so you can handle them with greater awareness:

Flavor Uniformity Control

In the production of salted and flavored peanuts, uniformity of salt and seasoning is very important. In Seifi lines, the flavoring machine is designed with a 360-degree spraying system to ensure all kernels are evenly flavored.

Preventing Burning and Bitterness

Burning during the roasting stage causes the product to become bitter. Seifi roasters feature digital temperature control and uniform air circulation to prevent burning.

Reducing loss and breakage

In a peanut processing plant, kernel breakage is one of the most important factors in reducing profit. In Seifi machines, using soft rollers, automatic pressure adjustment, and a shock-free transfer path with modern conveyor belts and elevators, the breakage rate is reduced to less than 5%.

Final Word

Setting up a peanut processing production line is a profitable investment in the food industry, provided you choose high-quality equipment. Seifi Industrial Group’s machines, with proprietary technology, high efficiency, waste reduction, and sorting precision, are the best choice for factories and industrial workshops. If your goal is to produce high-quality products, reduce costs, and increase profit, choosing standard equipment is the most important step.

Frequently Asked Questions

How much is the profit from peanut production?

Depending on the product type, net profit varies. Flavored and packaged products yield higher profits.

How much does a peanut production line cost?

It depends on capacity, machine type, and automation level. An exact price can only be given after requirements are specified.

Is the salted peanut production line different from the raw production line?

Yes, for producing salted and flavored peanuts, roasting machines, flavoring units, and salt tanks are also required.

What is the best machine for reducing kernel breakage?

The peanut sheller machine with rubber rollers and controlled pressure offers the best performance.

Is it possible to upgrade the production line?

In Seifi lines, it is possible to upgrade capacity and add new machines.