Biomass Processing Technology - Coating

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  1. Danish Technological Institute
  2. Biobased Business
  3. Biomass
  4. Biomass Processing Technology
Anne Christine Steenkjær Hastrup

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Coating det biobaserede samfund

Biomass Processing Technology - Coating

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01. Frontpage02. Bioconversion with insects03. Pilot plan for biorefining 04. Extrusion05. Enzymatic hydrolysis and fermentation06. Filtration, extraction and separation technologies07. Milling and micronization08. Coating09. Dry Fractioning10. Pelletizing

Coating adds oil or oil added to additives e.g. taste, colour or enzymes to a porous pellet. As a rule, the coating process takes a starting point in an extruded pellet, e.g., fish feed, crisps or breakfast cereals. During the process a vacuum is created, air is exhausted and oil is added. The oil is mixed with the material and then a valve is opened so the air flows in and creates atmospheric pressure in the coater. In that way, oil is distributed into the pores.

The advantage of coating is that the customer gets a product that can contain more oil than usual; and it is a product where the oil is more homogeneously distributed in the pellet and not only on the surface.


We offer:

  • Tests with different types of oil, e.g., fish oil and vegetable oil
  • Coating as part of feeding tests
  • Tests with different flavours for crisps or breakfast cereals


Equipment for coating:

  • DTI coater for 15 kg per batch


Process:

Pulverization and mixing – Conditioning – Extrusion – Drying – Coating

It is possible to adjust: pressure, vacuum and amount of oil.