Granulex™ Hammer Mill.

DFZP

2 BÜHLER GRANULEX™ HAMMER MILL

Application

The Granulex™ hammer mill has been designed for high

capacity grinding in various industries. Primarily applied in

the feed manufacturing industries for pre- and post-grinding

operations, it is also utilized for size reduction applications

in the biomass, oil milling and other food processing indus-

tries. The hammer mill masters to process a wide range of

raw materials, both in coarse and fine grinding applications.

Powerful grinding up to 75 t/h

Granulex™ was created with one thought in mind: to bring

maximum efficiency to high capacity grinding. The power-

ful 400-kW motor makes light work of process ing capaci-

ties of up to 75 t/h.*

Thanks to the machine’s large rotor diameter of 1500 mm,

the hammer tip-speed of 118 m/s is the highest of any

50-Hz hammer mill, resulting in superior particle granula-

tion in fine grind ing applications.

Industry Typical raw materials Required granulation Grinding capacity*

Animal feedCereals, oilseed extraction meals and other by-products

90 % < 2 mm up to 75 t / h

Aqua feedCereals, oilseed extraction meals and other by-products

90 % < 0.4 mm up to 25 t / h

Pet foodCereals, oilseed extraction meals and other by-products

90 % < 1 mm up to 40 t / h

Co-firing Industrial pellets 100 % < 2 mm up to 30 t / h

Pellet production Wood chips & sawdust < 9.5 mm 100 % < 4 mm up to 15 t / h

Oilseeds preparationOilseed extraction meals, e.g. soybean, rapeseed, sunflower

90 % < 2 mm up to 75 t / h

Fields of application

* Depending on raw material composition and required granulation.

Granulex™.The high capacity grinding solution.

Driving up availability.Hammering down costs.

Minimum downtime thanks to fast and easy

maintenance

Granulex™ has been designed for maximum availability,

and to require a minimum number of operators. Whether

changing applications or servicing the machine, speed

and simplicity are the order of the day.

Sliding doors on both sides of the hammer mill allow for fast

and easy access to the grinding chamber. The double guided

sliding doors are smooth-running, and safety switches provide

maximum operator safety while the machine is in operation.

Subdivided into four parts, the screens can be easily

handled and replaced by one person only. The user-

friendly screen clamping mechanism allows for fast and

proper fastening of the screens.

The hammers are designed for replacement by a single

person in less than 30 minutes. This is made possible by

the intuitive ergonomic design and the following features:

– Short hammer bars which can be easily handled

by one person

– Rotor braking device arresting the rotor during

the hammer change

– Special change-over tool for the hammers, preventing

them from dropping into the grinding chamber

Large screen area for improved product discharge

The large screen area of 4 square meters improves the

product discharge out of the grinding chamber, reducing

the load of the hammer mill. This results in less wear of

the screens and hammers.

3

Technical data

Throughput (max. t/h) up to 75 t/h, depending on raw material composition and required granulation

Motor

– motor power

– frequency

– rotation speed

250 / 315 / 355 / 400 kW

50 Hz

1500 rpm

Aspiration

– air volume

– pressure drop

160 / 220 m3 / min (coarse grinding / fine grinding)

30 mbar

Screen area 4 m2

Screen hole size (mm)

– coarse grinding

– fine grinding

1.25 1.5 2.0 2.5 3.0 3.5 4.0 5.0 6.0 7.0 8.0

0.4 0.5 0.6 0.8 1.0 1.25 1.5

Number of hammers 144 / 276 (coarse grinding / fine grinding)

Hammer tip-speed up to 118 m/s

2341000

1090

3550

1934

945

1980

1180

2695

550

More milling, less cleaning.A superior standard of hygiene.

BÜHLER GRANULEX™ HAMMER MILL 4

Dimensions and weights

Technical data of feeder

Hygienic design preventing dust settlements

The mill’s sturdy and rugged build is complemented by a

design of smooth, plain surfaces without rough edges. As

a consequence there are fewer places for dust to settle

and cleaning time is kept to a bare minimum. The closed

machine housing efficiently prevents dust settlements in

the motor chamber.

Hammer mill feeder

The hammer mill feeder supplies the product to the

grinding chamber at a continuous rate. The product is

uniformly distributed across the entire grinding chamber.

In combination with the automatic DFCQ throughput

controller (optional), the material may also be fed to the

mill as a function of the mill’s motor load. In this case,

the feed rate is adjusted by the electronically controlled

slide gate and the frequency-converter-controlled feeder

roll. The integrated gravity separator for eliminating

high-density particles and a permanent magnet remove

impuri ties such as stones or tramp iron. However, a

precleaning stage is required.

Throughput up to 160 m³/h

Particle sizes

– fine grinding

– coarse grinding

max. length 10 mm

max. length 60 mm

Bulk density 0.2 to 0.8 kg/dm3

Moisture

– fine grinding

– coarse grinding

up to 12 %

up to 16 %

Compressed air supply 6 to 8 bar

Model Net weight

incl. feeder [kg]

DFZP,

without motor

3860

DFZP,

250-kW motor

5470

DFZP,

315-kW motor

5640

DFZP,

355-kW motor

5680

DFZP,

400-kW motor

6000

Global customer service

Reliable and high-quality spare and wear parts are key

for operating the machine at its maximum performance.

Only genuine Bühler hammers and screens meet the

highest standards of quality and precision. Thanks to

the global setup and network of service experts, prompt

delivery is guaranteed – anywhere in the world.

BÜHLER GRANULEX™ HAMMER MILL 5

The Granulex™ hammer mill is the new high-end

grinding machine from Bühler, bringing Swiss quality

and reliability into high-throughput milling for the

first time.

Whether utilized for coarse or fine grinding, in pre- or

post-grinding applications, this powerful and extremely

versatile machine is the perfect one-stop grinding solu-

tion for pro cessing various raw materials.

Granulex™ comes with many design innovations that

all have one common goal: maximum efficiency in every

aspect.

Efficiency by design.The one-stop grinding solution.

– Powerful grinding up to 75 t/h

– Minimum downtime thanks to fast and easy

maintenance

– Large screen area for improved product

discharge

– Hygienic design preventing dust settlements

Bühler AG

CH-9240 Uzwil, Switzerland

T +41 71 955 11 11

F +41 71 955 28 96

www.buhlergroup.com

FB 1

9230

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