Unique
Technology

With the HD pellet technology, wood pellets are carefully cut to a defined length. The average length, length peak and maximum length can be set with millimetre precision. As a result, over-lengths are entirely avoided and there are significantly lower screening losses in the production process. This becomes more efficient, and consistently high pellet quality is guaranteed.

Superior
Pellet quality

Significantly lower screening losses occur not just in the production, but also in the storage and handling of HD pellets. Because one tonne of HD pellets, owing to the higher average length, consists of significantly fewer individual pellets. They therefore flow steadily and with low friction and can be blown in with low losses. The unique HD quality is retained right into the customer’s pellet store.

 

Strong partner
network

Ever more exclusive producers, logistics centres and retailers are joining forces in our HD partner network. Together, we pool our knowledge and skills for the highest quality, maximum efficiency, short delivery distances and year-round reliability of supply. Professionalism in the handling of wood pellets and outstanding customer service are always the top priority for all of our certified HD partners.

HD Pelletstechnology:
The new benchmark in pellet production

Conventional technology

The technology for the pelletisation of wood comes from the animal feed industry. Particularly the cutting technology...

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Conventional Technology

The technology for the pelletisation of wood comes from the animal feed industry. Particularly the cutting technology ... in the presses was carried over with very few changes, even though the qualities of wood as a raw material are completely different. Because pellets made from wood are naturally significantly more brittle and dusty.

In addition, the wood pellets should not under any circumstances be too long. In order to avoid pellets which are too long, the freshly pressed pellets are very roughly chipped on the “crusher bars”. Thus, there has only been trimming technology with limited suitability in use, which results in an unnecessarily high number of short and cracked pellets, as well as fragments and dust, in production.

The innovative HD technology

The HD pellet technology is based on an entirely new principle. The pellets rotating on the round die ...

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The innovative HD technology

The HD pellet technology is based on an entirely new principle. The pellets rotating on the round die... are carefully cut to a defined length with a rotating movement. This is why HD pellets are not only more uniform and longer, but also more solid.

HD® makes it technically possible to produce pellets of a defined length for the first time: The average length, length peak and maximum length can be set with millimetre precision – the system guarantees there are no overlength pellets. Only by using the HD pellet technology can pellets with a length distribution which is ideal for pellet burning system be specifically produced.

Less friction, lower losses

Practical experience shows that the measurement values for friction in pellet factories...

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Less friction and lower screening losses

Practical experience shows that the measurement values for friction in pellet factories... are halved on average through conversion to the HD technology, and thus a significantly lower screening proportion must be fed through the production process for a second time. With values of between 0.3% and 0.8%, HD pellets are in a class of their own.

And there are significantly lower screening losses in the storage and handling of HD pellets, too. The measurable and visible HD quality is retained right into the customer’s storage facilities. HD pellets also have a significantly better length distribution after blowing in. The amount of fine particles in the customer’s storage facilities (<3.15 mm) is regularly less than 1%.

Installation and operation

The HD technology can be used in all standard round die presses...

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Installation and operation

Ihe HD technology can be used in all standard round die presses... We undertake the individual technical conversion and installation of the HD technology. Daily oversight and adjustment is simple and is carried out by trained production staff.

The HD quality system is integrated into the production process and builds on the existing certification programmes. Every HD pellet manufacturer must always be certified in accordance with the requirements of DINplus or ENplus-A1. In addition, stricter requirements for the mechanical resistance are defined in the HD quality system and there are particular HD-specific parameters for the length distribution.

 

HD Tech­no­lo­gy
in use

In the video, you can see the production of HD pellets using a CPM 7930-4 type pellet press, equipped with HD pellet technology: 24 mm length peak, 30 mm maximum length set. No single pellet is longer – guaranteed.

Diese Pelletspressen wurden bereits mit HD-Pelletstechnologie ausgestattet
(Stand 05/2016):

  • CPM 7930-4
  • CPM 7932-5
  • Salmatec Maxima 700,
  • Salmatec Maxima 840
  • Bühler RWPR 900
  • Andritz PM 30
  • Andritz Biomax
  • Münch 520-80

You can recognise pellet presses with HD technology by this badge

 

European, American and Canadian patents, as well as a German registered design, are pending for the HD Pelletstechnology.

HD® is a European Community Trademark.

 

The HD technology
Partner network

The innovative HD technology improves the pellet quality, strengthens our partners’ market positions and promotes positive development of the entire market.

The combination of superior product quality and a professional, national marketing concept forms the foundation for a comprehensive, synergistic HD partner network. In this community, exclusive HD manufacturers and retail partners can benefit from a unique quality advantage for themselves and their customers through innovation and know-how transfers.

Benefits of HD quality in handling


 

Better pellets are
more beautiful pellets at the same time

The human brain is constantly looking for patterns. With HD quality pellets, in contrast to conventional pellets, the eye detects a system and order. We automatically sense that it is higher quality. But it is the facts that really count:

Optimised logistics

Optimised logistics

HD-Pellets flow steadily and with low friction. Even for delivery with a silo truck, benefits appear. Because HD-Pellets are on average simply longer – and "flow" better in the air stream in the blowline. They can be blown in with lower losses.

Optimised handling

Optimised handling

There are significantly lower screening losses in the storage and handling of HD Pellets. The reason: 1 ton of HD Pellets, owing to the higher average length, consists of significantly fewer individual pellets. And the end surfaces, owing to their brittle and porous form, are the main culprits for producing fragments, abrasion and dust.

Optimised quality

Optimised quality

In addition to the particular benefits of HD quality, the HD Pellets are also generally in better conditions since the mechanical strain during the process of trimming the still hot pellets in the press runs significantly more gently. Complaints resulting from pellets which are too long are a thing of the past, because the maximum length of the pellets can be reliably set.

 

You get more from your heating with HD quality pellets!

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HD-Pellets studies and test results

 

HD pellets in an optimal mix of lengths
Quality you can see!

HD Pellets after press and cooler on the screen

HD Pellets on the belt conveyer to the storage

HD Pellets when loading into the truck