Home›Hazelnuts
Hazelnut Processing
Nuts

Hazelnut Processing

A hazelnut processing line should be planned around the incoming sample and the final product specification. Key considerations include removing leaves and shell fragments, separating empty or damaged nuts, and planning size grades, storage and any downstream cracking or roasting. These findings help determine whether pre-cleaning, aspiration, screening, density separation or optical sorting is appropriate. The final sequence and throughput should be confirmed using a representative sample and a written supplier offer.

Open catalogue

Typical stages in hazelnut processing

Planning information only: capacity and configuration vary depending on the product and foreign-material profile.

01Receiving
02Pre-cleaning
03Separation
04Grading
05Sorting
06Storage
07Packaging

Equipment to consider for hazelnut processing

Equipment for cleaning, grading, separation, optical sorting and handling.

SEED PROCESSING GUIDE

Hazelnut Processing: cleaning, separation and grading

A hazelnut processing line should be planned around incoming material condition and the final product specification. Key considerations include removing leaves and shell fragments, separating empty or damaged nuts, and planning size grades, storage and any downstream cracking or roasting. The objective is to remove unwanted material without unnecessary loss of saleable product.

01 / PROCESS

Typical stages in a hazelnut processing line

Planning starts with receiving, sampling and defining acceptance criteria. Depending on the sample, the line may use pre-cleaning, aspiration, screen grading, destoning or density separation, and optional optical sorting. Not every crop requires every stage; the sequence should be verified against the sample and final specification.

02 / EQUIPMENT

How to choose equipment for hazelnut processing

A hazelnut cleaning machine or other hazelnut processing equipment should not be selected on capacity alone. Screen openings, airflow, feeding method, product-contact materials, access for cleaning and downstream connections all matter. Start by reviewing Pre-Cleaner, Optical Color Sorter, Destoner, Nut Blancher, then confirm the final configuration with the supplier using a representative sample and target grade.

03 / QUALITY

Quality factors in a hazelnut processing plant

Incoming moisture, impurity profile, variation in seed or kernel size, and the intended food, feed, oil, spice or seed-market destination all affect equipment selection. Aggressive handling can increase breakage or losses, while insufficient separation may miss the target purity. Cleaning efficiency and saleable-product recovery should therefore be assessed together.

Technical checklist for hazelnut processing

  • Incoming crop, moisture condition and impurity profile
  • Target grade, size range and acceptable level of broken or defective material
  • Required throughput, operating hours, packing needs and downstream interfaces

Separating in-shell hazelnut handling from kernel processing makes equipment sequencing and quality checks clearer.

When planning a hazelnut processing plant or complete seed processing line, define capacity, product quality and acceptance criteria clearly to support an accurate project quotation. Confirm throughput, dimensions, utilities, accessories, installation, commissioning and warranty conditions in writing.

Key planning points for a reliable hazelnut processing line

For hazelnut processing, define the incoming product form, moisture condition where relevant, impurity profile, target purity and acceptable level of broken or defective material before selecting equipment. These details help determine not only the right machine, but also the sequence of equipment and inspection points across the line.

Separating in-shell hazelnut handling from kernel processing makes equipment sequencing and quality checks clearer. For nuts, whether the product arrives in-shell or as kernels changes separation, conveying and downstream equipment needs. Cleaning efficiency should be reviewed alongside saleable-product recovery. Testing the same representative sample helps establish realistic expectations for target purity, product losses and the adjustment range required.

When comparing quotations, document throughput assumptions, product-contact materials, dust extraction, access for maintenance and cleaning, conveying interfaces and the next packaging or processing step. Ask the supplier to confirm operating conditions and capacity using a representative sample.

Related equipment

Pre-Cleaner · Optical Color Sorter · Destoner · Nut Blancher

Frequently Asked Questions

Which impurities should be removed first when processing hazelnut?

Inspect an incoming sample for stones, dust, husks, stems and other foreign material. The impurity profile can vary with harvesting and storage conditions.

How should pre-cleaning and fine cleaning be planned for hazelnut?

Pre-cleaning removes coarse and light material, while fine cleaning targets smaller particles. Screen and airflow settings should be selected using a representative sample.

Does hazelnut processing require grading or density separation?

That depends on kernel size, shape, density differences and the target quality. Sample testing helps identify useful separation stages and estimate product loss.

How is hourly throughput determined for hazelnut?

Throughput planning considers moisture, impurity level, kernel characteristics, target purity and operating hours.

What should be checked before storing processed hazelnut?

Check moisture, residual impurities, product integrity and the required quality. Storage conditions should suit the crop and its intended use.