Biomass pelleting

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Biomass pelleting
Installation of ANDRITZ
hammer mills 4360

ANDRITZ has the ability to manufacture and supply each

and every key processing machine in the pellet production line.
We offer single machines for production of biomass pellets, solid
biofuel, and waste pellets.
Homogenous fuel of identical standard
Environmentally friendly
CO2 neutral fuel
Several different raw materials can be
used for biomass pelleting
Sawdust
Bark
Wood chips
Straw
Raw material sources
Timber industry
Sawmills
Paper industry
Furniture industry
Building industry
Agricultural by-products

With over 350 reference plants, ANDRITZ

is a global leader in biofuel pelleting technology. ANDRITZ pellet mills produce more
than 50% of all biofuel pellets worldwide,
and ANDRITZ has held a market share of
over 50% since the pioneering of biofuel

Sawdust

pelleting in the 1980s.

If correctly managed, biomass is a sustainInstallation of ANDRITZ
Pellet mill PM30

able fuel that can deliver a significant reduction in net carbon emissions compared

Bark

to fossil fuels.
The amount of CO2-neutral fuel produced
with equipment from ANDRITZ replaces almost five million tons of oil per year.

Wood chips

Some of the advantages of pelleting

Simple handling
Reduced transport cost
Better storage capabilities

02

Straw

Grinding and pelleting

ANDRITZ makes grinding and pelleting equipment for
converting forestry and agricultural by-products into
uniform, densified fuel pellets for large-scale power and
heat generation, and for heating private homes.
Key processing machinery

Leading market share

ANDRITZ-design solutions are based on

ANDRITZ is a major player in supplying and

highly advanced key machinery for wood

supporting wood pellet producers all over

grinding and pelleting, including chippers

the world and holds a share of more than

and dryers for the processing of wet and/or

50% of the biomass fuel market as well as

green wood prior to the pelleting process.

the wood grinding market.

Pelleting

LM26

Compression by means of biomass pelleting provides a substantial density increase.

By converting wood chips into compressed
wood pellets, the density typically increases from 150 kg/m to 650 kg/cm, which
generates significant savings on transport,
storage, and handling, as well as various
other environmental advantages.
Increasing need for environmentally
friendly fuel

Grinding

Paladin

Multimill B

PM30

Hammer mill 4360

Biomax

The private market as well as the market

for large-scale power stations is growing
rapidly. This is mainly a consequence of the
Kyoto Protocol, which covers more than
160 countries, representing over 55% of
the global greenhouse gas emissions.

03

Process flow
Biomass pelleting
Pre-grinding size reduction
Raw material: Wood chips
Raw material supplied as wood chips in sizes of approx. 100+ mm requires size reduction in a chipper and a hammer mill prior to
the subsequent drying process. The Optimill hammer mill is intended for high capacity and optimum particle size distribution by
means of an energy-efficient rotor design
and replaceable wear liners in the grinding
chamber.
Drying
Raw material: Sawdust
The drum drying system dries the raw material before the fine-grinding process. To
ensure an evenly dried product, the raw
stream of hot gases and dried in a convec-

Raw material intake

- wood chips

tive process until it reaches a residual mois-

Process flow for wood chips

material is conveyed pneumatically by a

ture content of approx. 10%.

Fine-grinding

Pre-grinding

Raw material intake

- wood chips

Raw material intake

- sawdust

Dryin

Raw material
intake - sawdust

Pre-grinding

Process flow for sawdust

Process flow for wood chips

It is recommended to grind raw materials

Process flow for sawdust

in a hammer mill to achieve homogeneous

pellets. The large surface and open fibers of
ground products facilitate steam absorption in the cascade mixer. Steam and high
temperature in the cascade mixer soften
the lignin in the wood, after which pelleting can take place without the addition of

Hammer mill

Hammer mill

LM26

Paladin pellet mill

binders.
The Multimill hammer mill operates with an

energy consumed to operate the pellet mill

which has to be removed before sifting and

airflow that optimizes the grinding process

and heat the steam corresponds to 2.5-3%

storing the pellets. The pellets are cooled

and carries the wood meal on to a cyclone

of the wood energy content.

by air taken from the surrounding area, thus

or filter for separation.

Pelleting

the pellet temperature will always be 5 to

ANDRITZ offers two types of biomass pel-

10 C above room temperature. The cooler

let mills.

retention time and the wood pellet diameter

The pellet mill ensures high output and ef-

are decisive for dimensioning the cooler.

ficient control of the pellet quality. The pellet

Cooling

mill is dimensioned for large forces and pro-

A cooler is provided for wood pellets prior

Final sifting

vided with exchangeable wear parts. The

to packing and storage. The friction gener-

Finally, the pellets pass through a sifter for

efficient process control ensures high flex-

ated in the die during the pelleting process

removal of crumbs and dust, which are re-

ibility and optimum energy utilization. The

develops additional heat in the pellets,

circulated to the process.

04

Loading

ng
Drying

PM30

Loading

BioMax

Fine-grinding
Fine-grinding

Cooling

Pelleting
Pelleting

Cooling Sifting
Cooling

Final sifting

Sifting

Bagging and
truckloading
Bagging and
truckloading

Process control

Process control
ANDRITZ offers modularly designed,
computerized controls for individual key
machines, complete processing channels,
and complete plant controls.

05

Waste pelleting by ANDRITZ

Waste products can be very valuable!
A wide variety of materials that are considered to be waste can
in most cases be transformed into valuable recycled materials.
Among many production processes, pelleting can give a
significant added value to these types of product.
Why should we pelletize waste?

Waste pellets recycled into new products

In the pelleting process, loose material is

Waste pellets made of pure, surplus materi-

Pelleting

converted into compressed material. As a

als or, in other words, waste materials con-

The ANDRITZ Paladin pellet mill en-

result of the pressure and heat applied to

sisting of only one type of product, such as

sures high output and efficient control

the substances, the density of the material

celluloses, plastic mainly coming from pro-

of the pelleting process. The pellet mill

is increased by a factor of up to 10, in pel-

duction processes, can be made suitable

is dimensioned for large forces and de-

lets with diameters of 3 mm up to 30 mm.

for many types of application. Clean plas-

signed with exchangeable wear parts.

This results in great advantages in handling

tic materials are often applied in molding

The robust Paladin pellet press with

the waste, better storage, and significant

processes for new types of furniture. The

twin drive provides smooth operation

savings in transportation costs.

molding process demands stable pellets

with low vibration levels. The belt drive

at bulk densities of approx. 400 kg, which

and heavy-duty pellet chamber ensure

improves the molding process significantly.

reliable and safe production.

Waste pellets as bioenergy

Waste material mixtures containing of many
high calorific value products, such as paper/

Materials for waste pelleting

plastic and other foreign materials like silica,

Composite materials for substitute fuel

Pure materials for recycling into new

can make this product a valuable type of pel-

Paper sludge

products

let for the bioenergy industry. By using renew-

Plastics PE and PP

Plastics

able forms of energy, it is possible to reduce

Wood

Stabilizers

the dependency on fossil fuel and use pellets

Carpet waste

Compost

to fill the gap for heating and electricity.

Household waste

Sewage sludge
Chemicals
Chicken manure
Electronic waste
Industrial dust
PUR foam (e.g. refrigerator recycling)
Advantages of pelleting
Simple handling
Reduced transport cost
Better storage capabilities
Homogenous fuel of identical standard
Specified bulk material for further processing
Environmentally friendly

Paladin pellet mill 2000 BM

06

Service and support

Aftermarket
After-sales service and support
Our excellent aftermarket service and support is what sets us apart from our
competitors. Our collaboration with our customers does not end with the
sale or the machine installation. The good customer relationship is extended
through important after-sales service and support.
Our services

vice specialists is unmatched backed by

Our highly skilled and motivated employees

the full knowledge and technical support

stand ready to help you with:

that only the equipment manufacturer can

After-sales services, support, and

provide.

follow-ups
Spare and wear parts, maintenance,

Benefits

and repairs

There are several benefits to be gained

Process optimization

from continuous upgrades, optimizations,

Training of plant operators

and service work on your equipment:

Maximum production

Field services

Process knowledge and experience

We offer our customers excellent field ser-

Reliability and cost efficiency

vices, where our service technicians come

Reduced life cycle costs

to you and your plant to provide assistance.

Short and effective shutdowns

The depth and experience of our field ser-

Improved energy efficiency

07

Where to find us
Global supplier local presence
ANDRITZ is truly a global organization
but also with local presence. We are
represented all over the world. The global
market for feed technologies is served from
five main locations:
Esbjerg, Denmark
Sanshui, Guangdong Province, China
Geldrop, Netherlands
Muncy, PA, USA
Humenn, Slovakia
In addition, we operate from several strategic regional sales, engineering, and service
locations in China, Vietnam, India, Australia,
Mexico, Venezuela, Brazil, Chile, France,
the UK, and Germany and are also represented locally by agents and distributors in
many other markets.

CONTACT
AUSTRALIA
ANDRITZ Feed & Biofuel
Australia
Division of ANDRITZ Pty. Ltd.
Phone: +61 3 8795 9800
andritz-fb.au@andritz.com

GERMANY
ANDRITZ Feed & Biofuel
Germany
Division of ANDRITZ GmbH
Phone: +49 2104 9197 0
andritz-fb.de@andritz.com

USA
ANDRITZ Feed & Biofuel
USA
Division of ANDRITZ Inc.
Phone: +1 570 546 1253
andritz-fb.us@andritz.com

BRAZIL
ANDRITZ Feed & Biofuel
Brasil Ltda.
Phone: +55 51 3333 0128
andritz-fb.br@andritz.com

INDIA
ANDRITZ Feed & Biofuel India
Rep. Office of ANDRITZ
Feed & Biofuel A/S
Phone: + 91 87544 15287
andritz-fb.india@andritz.com

VENEZUELA
ANDRITZ Feed & Biofuel
Venezuela
Rep. office of ANDRITZ
Feed & Biofuel A/S
Phone: +58 241 8422515
andritz-fb.ve@andritz.com

CHINA
ANDRITZ Feed & Biofuel
China
Phone: +86 21 64670285
andritz-fb.cn@andritz.com
FRANCE
ANDRITZ Feed & Biofuel
France
Division of ANDRITZ S.A.S.
Phone: +33 24 75 06 364
andritz-fb.fr@andritz.com

MEXICO
ANDRITZ Feed & Biofuel
Mexico
Division of ANDRITZ HYDRO
S.A. de C.V.
Phone: +52 229 178 3669
andritz-fb.mx@andritz.com
NETHERLANDS
ANDRITZ Feed & Biofuel B.V.
Phone: +31 40 2627777
andritz-fb.nl@andritz.com
UK
ANDRITZ Feed & Biofuel Ltd.
Phone: +44 1482 825119
andritz-fb.uk@andritz.com

VIETNAM
ANDRITZ Feed & Biofuel
Vietnam
Rep. office of ANDRITZ
Feed & Biofuel A/S
Phone: +84 8 6253 9434
andritz-fb.vi@andritz.com

ANDRITZ Feed & Biofuel A/S

Glentevej 57
6705 Esbjerg, Denmark
Phone: +45 72 160 300
andritz-fb.dk@andritz.com
www.andritz.com/ft

All data, information, statements, photographs, and graphic illustrations in this leaflet are without any obligation and raise no liabilities to or form part of any sales contracts of
ANDRITZ AG or any affiliates for equipment and/or systems referred to herein. ANDRITZ AG 2015. All rights reserved. No part of this copyrighted work may be reproduced, modified or
distributed in any form or by any means, or stored in any database or retrieval system, without the prior written permission of ANDRITZ AG or its affiliates. Any such unauthorized use for
any purpose is a violation of the relevant copyright laws. ANDRITZ AG, Stattegger Strasse 18, 8045 Graz, Austria.
245 GB

L 0715

CHILE
ANDRITZ Feed & Biofuel
Chile Ltd.
Phone: +56 2214 5711
andritz-fb.cl@andritz.com