The challenge of technical quality prediction

Figure 1b. Interior of extruded fish feed pellet

Interior of extruded fish feed pellet.

It is important to produce extruded fish feed at a consistent, high technical quality level. But sometimes it does happen that the technical quality become poor, and it is a difficult task to identify why and, more importantly, how one might avoid this in future productions.

 In the next issue of Journal of Food Process Engineering Graintec will publish their latest findings on the identification of structural properties of extruded fish feed and their influence on technical product quality. Only with knowledge of the most favorable structural behavior of the product one will be able to optimize and consistently predict the technical quality, e.g. under influence by the chosen parameters in the drying process.

Follow the news at for notification on publication, which is expected to be sometime soon.


At the entry of 2015 we have established our ability to operate global on group level. Presently we are executing design and/or supply projects to Norway, Scotland, Spain, The Netherlands, Jordan, Chile, USA, China, Peru and Australia.

The close cooperation between Graintec A/S and the subsidiaries in USA, Chile and China and the local presence ensure close dialog with customers and suppliers in the different regions of the world.

Our scope of supply includes design and supply projects as well as spare and wear parts for extruded pet food and fish feed production.


We look forward to new and challenging projects in 2015.

Happy New Year, feliz Año Nuevo, 新年快乐

Sea lice are a challenge to farmed and wild fish

Challenges comes in different sizes and shapes. One the small-sized challenges in the sea is the common sea louse, known as the Salmon louse. It is small marine parasites that occur naturally on wild fish. It is planktonic and transported on the tide, attaching itself on the skin of the fish.

To face the challenge

A non-medicinal possibility are a high standard on clean net and cages with fine mask nettings among others.

Another possibility is pharmaceutical products. GRAINTEC have designed and built several production plants for the production of medicated or functional feeds used to reduce the problem from sea lice in salmon.

To design and execute projects for functional and medicated feeds requires high expertise and knowhow in hygiene feed/food plant design, and the process technology used should be very accurate and safe in terms of additions of various ingredients together will full traceability. The process line should have wash-down capability from the point where medicine is added.


Successful international seminar in Chile

After a week of intense training, a group of around 35 operators, maintainers, supervisors and managers could with satisfaction look back at a successful seminar.

We arranged a seminar taking place at EWOSseminar-chile-1030x772 facilities in Coronel in Chile in the beginning of November. GRAINTEC’s Manager for Technology and Business Development, Benny Simonsen, presented the theory behind extruded fish feed production. Moreover, the program included on-site consultancy and presentations by GRAINTEC, Extru-tech, Tietjen and Geelen.

The participants also had the opportunity to get together to discuss new technology development, improvement suggestions and recommendations.

All in all a success to be repeated.


Bulk Boat is named on Saturday

On Saturday November 15, 2014 the “With Marine”, the second of the two new high technology bulk boats equipped with a cargo handling system by GRAINTEC, is going to be named.with-harvest1

The two vessels “With Harvest” and “With Marine” are both built for transporting fish feed from factory to fish farm.

The vessels run on a LNG-gas-electric propulsion system, which makes them very environment-friendly, leaving least possible environmental footprint to seaand air. The fully automatic closed loop loading and offloading systems by GRAINTEC have a loading capacity of 3,000 tons and can be loaded quickly within 10-12 hours. The closed loop system makes it possible to have a much cleaner and hygienic loading and offloading. The onboard crane has a reach of 27 meters.

GRAINTEC looks forward to attend the naming of the “With Marine” in Trondheim on Saturday.


Picture source:



Progress in the ongoing innovation projects at Graintec

Ongoing innovation project at Graintec: improving pellet quality and energy efficiency in Salmon/Trout feed drying installations

Energy-recovery-light-flow2We currently have two major projects located in our Business and Technology Development department. One of these is an Industrial PhD Project, which is run by Anders Haubjerg. The project is conducted in collaboration with the University of Southern Denmark.

The project aims to improve energy efficiency in dryers and shall help GRAINTEC to optimize the design of especially salmon/trout feed drying installations with regard to energy efficiency and product quality. The improved design will be available for GRAINTEC’s customers to predict specific energy consumption and final technical quality of produced fish feed pellets, as a response to the conditions used in the drying process. Thus, the key objective in the project is to relate specific energy consumption and expected technical quality to drying parameters; air temperature, retention time, bed depth, moisture content of product, air humidity and zone-wise variations of the aforementioned.

A large part of the project will rely on mathematical models of the drying process to predict the energy consumption. However, models are only as good as their actual ability to predict reality. Therefore we have established collaboration with Wenger in the demonstration of the model behavior on a new Laboratory Scale dryer. The dryer has been custom built by Wenger to suit the demands for validating the new drying model.Fishfeed

The potential of obtaining a multi physical description of parameters in the drying process which give rise to the formation of structural properties in low starch-based, porous pellets constitutes the research value in this project. In the project we have so far established knowledge of the structural mechanics in fish feed pellets, which promote mechanical durability. It was found that particular viscoelastic properties of a pellet give good mechanical durability, when measured in the DORIS tester.



From the project we hope to obtain better knowledge on how to obtain a reproducible, high pellet quality without compromising energy-efficiency. The last few weeks, Anders has been focusing on optimizing the performance and operation of the Lab Dryer:


“I have connected power and steam and installed a fan in the power cabinet, various safeguards anti-vibration utility, and isolation around ductwork. I am now working on calibration and validation of sensor readings for air humidity and we also need to rewrite some signals in the software.”

The project, which was initiated in September 2012 is scheduled to be finalized in April 2016.




Pictures: Graintec / Aktuel Naturvidenskab


A new giant is ready to produce at Fosen in Norway!


Marine Harvest’s first fish feed factory is about to open. The project is finalized, the factory will open officially at noon on the 15th of October 2014 at Valsneset in Bjugn/ Norway.

We at GRAINTEC are proud to have been partners to Marine Harvest in this turnkey project of delivering a new state of the art fish feed factory for Marine Harvest Fish Feed AS in Norway.

The new Marine Harvest factory is supplied with technology designed by GRAINTEC, who has also been responsible for supplying the majority of the process, factory automation and electrical works as well as auxiliary and service installations. GRAINTEC’s knowhow and project execution skills have been the key factors for a successful project – on time – on budget.

The factory is capable to deliver 220,000 metric tons a year of high quality feed to the salmon farms of Marine Harvest. For the first quarter of operation, the plant has been able to produce about 56,000 metric tons of feed making an EBIT of EUR 2.5m.

in-briefThe project is unique in its approach to carbon footprint and other environmental impacts as it has been designed to fulfill the sustainability mission of Marine Harvest as well as local laws and regulations.

The new factory at Valsneset is part of the trusted value chain that is core to the production principles applied for all production of high quality salmon at Marine Harvest. The process includes all steps from producing fish feed to delivering premium portioned fish filets. Marine Harvest operates the entire value chain of all its products – ensuring every stage of farming and production adheres to their strict best practice and category-leading guidelines. These controls guarantee supreme quality and consistent products which customers around the globe value and trust.



About Marine Harvest ASA:

Marine Harvest ASA is one of the largest seafood companies in the world, and the world’s largest producer of Atlantic salmon. The company employs 10 200 people, and is represented in 22 countries. In 2013 the company had a turnover of NOK 19 billion. Marine Harvest is listed on the Oslo Stock Exchange (OSE) and the New York Stock Exchange (NYSE).

Marine Harvest supplies healthy, delicious and sustainably farmed salmon and processed seafood to more than 50 markets worldwide. The company is present and trusted in all major salmon farming regions in the world. Estimated salmon production for 2014 is 405 000 tonnes.






Contract with Norwegian Marine Harvest ASA


Graintec A/S has entered into a contract with Norwegian Marine Harvest ASA on production systems and environment plant for a new fish feed factory. Marine Harvest ASA is the world’s largest salmon farmer. The value of the order is 36 mio. EURO, the largest order in Graintec’s 27-year history.

 The contract reveals that in spite of the company’s size, Danish Graintec may be considered as one of the world’s leading manufacturers in the field. CEO Niels Pedersen says that “From the beginning Graintec has been in front on the development of high technology solutions for the production of quality feed for farmed salmon. I look forward to our cooperation and am proud that Marine Harvest ASA has entrusted this order to us. This is great acknowledgement of Graintec’s work and a proof of our ability to meet our customers’ demands and expectations and supply world class solutions.”

New representation in Shanghai, China

Graintec A/S is delighted to announce the opening of our new representation in Shanghai, China 

The new office will focus on supporting our international customers locally and will also develop new relations to the major domestic fish feed producers with particular focus on the activity in Vietnam and the surrounding countries. The office shall also act as hub for sourcing of Chinese process equipment into Europe and the rest of the world. 

The services offered in the beginning are our well known engineering skills for upgrading capacities, improving production efficiency, reduction of energy or odour etc. On the long term we will also be able to offer turn-key contracting.

Mr. Wang Yuan has been appointed General Manager Asia and is based in our office in Shanghai. Mr. Wang has been working 10 years at the Royal Danish Embassy in Beijing as Trade Council Senior Advisor for Agriculture. Before that he worked 4 years for van Aarsen and 10 years in the Chinese Ministry of Agriculture.

The Chinese office will be backed up from Denmark by Steen Petersen, Regional Director Asia, and Benny Simonsen, Manager Technology and Business Development.

Locally it will be Mr. Wang Zhao-jun. M.Sc Manufacturing Technology and Equipment for Feed.

Mr. Wang Yuan adds: “I’m looking forward to the task giving to me building up our Asian organization. We will do our utmost to deliver the high quality of engineering services that has been the brand for Graintec over the last 25 years”

Steen Petersen continues: “We also see this as a great opportunity for a broader global approach to search assignments. I’m confident that by getting access to a market of price competitive equipment, we will also be able to further extend our ability to deliver projects in the rest of the world”.