Fish Residual Raw Material Processing

Fish meal processing has traditionally consisted of the main steps:

  • coagulation,
  • separation,
  • and evaporation/drying

The dominating process for half a century has been the Stord Fish Meal Process with the main steps:

  • cooking in steam heated screw cooker,
  • pressing in twin screw press and oil separation in centrifuges,
  • evaporation of stick water in waste heat evaporator,
  • drying of press cake and concentrate in disc drier,
  • and milling and cooling of meal

The process requirements depend on the freshness of the catch, type of fish, requirements for meal and oil quality, cooling water quality, ambient temperatures and environmental issues, and can vary substantially from one plant to another. Today another important step can be added to the list above, namely hydrolysis. When applying hydrolysis on high quality residual raw material special high grade protein concentrates can be produced together with high grade oil and meal. Separation technology has also developed, and today three-phase decanter centrifuges can be a very good one-step option to separation in twin screw press followed by oil/stick water separation in centrifuges.

Flowheet Fjell Fish Meal Process

What we do

Fjell Technology Group designs, manufactures and commissions equipment, machinery and processing lines for all type of fish and residual raw material processing. We can offer:

  • Conceptual studies and process simulations with detailed mass and energy balance
  • Process design complete fish meal plants
  • Pilot testing
  • Plant layout in detailed 3-D
  • Design and manufacture of own process equipment.
  • Specification and procurement of other process equipment
  • Construction Management
  • Fabrication
  • Procurement
  • Installation
  • Commissioning