Shelling

THE AIM OF THIS PROCESS IS TO OBTAIN THE PEANUT SEED BY SEPARATING IT FROM THE SHELL THAT CONTAINS IT, FOR SUBSEQUENT SELECTION AND CLASSIFICATION. THE PRODUCTION CAPACITY OF THIS PROCESS IS 480 TONS/DAY.

1 · RAW MATERIAL STORED IN HOPPERS

The raw material comes from the storage sector, where inshell peanuts are segregated by variety and quality. With a previous step applied in which a rotary magnet and vacuuming is used to eliminate metallic impurities and large pieces.

2 · PRE-CLEANING PROCESS

The product is moved through vibration, passing under aspirations and on sieve powder (cleaning dust and loose husk), then by an abrasive belt or destemmer that removes the sticks and, finally, by a sieve where it separates:

• Loose peanut grains inside the shell, loose grain or by-product by the shelling line.

• Peanuts pods that are still on the process line.

Note: the sticks and dust removed in this stage of the process are destined for the field as filler material and the husk is to be used for as biomass for energy production.

3 · DE-STONING PROCESS

The objective of this process is to separate impurities of different specific weights from the product (hull, stones, bone, etc.). The de-stoning machine consists of a microperforated sieve that operates through ventilation, aspiration and vibration.

4 · SHELLING PROCESS

This stage consists of separating the Shell from the grain by friction inside the cylinders. The cylinders are formed by a plank and a mesh with different measurements, depending on the size of the peanut to be shelled.

5 · GRAVIMETRIC ANALYSIS PROCESS

This machine works with a system of ventilation, aspiration and vibration, and it separates all the damaged grains or light foreign matter like moldy, burned, or chopped grains, sticks, etc. from the suitable product.

6 · ELECTRONIC SELECTION

This equipment works by means of selection by color and shape; the latter is done via a high-resolution infrared cameras with Ingaas sensors for better detection of foreign matter or defects.

7 · CONVEYOR BELT (VISUAL INSPECTION)

In this stage, trained personnel detects foreign matter that may have circumvented the electronic selection process.

8 · SIZING PROCESS

The sizing machines are designed to sort/separate grains with several planes, each of them with sifters of different diameters and shapes (slanted-round) with which the different grain sizes/calibers are obtained.

9 · BAGGING AND LOT IDENTIFICATION

Final stage in which the finished product is bagged and identified with a lot, date, crop and operator number to ensure the lot's traceability. All our finished products are held in storehouses with controlled temperature and humidity.

10 · ASPIRATION SYSTEM

The complete plant process requires a vacuum system in different equipment, depending on the function and stage of the process. The main equipment, gyratory sleeve filter, has an average capacity of 2,000 m3/min and a power of 220 HP, and it's composed of a chamber containing baskets and sleeves, which carries out the dust filtering.