The document discusses Wynveen International BV, a manufacturer of hammer mills for grinding raw materials in feed mills. Key details include: - Wynveen hammer mills come in a range of sizes from 2-60 tonnes/hour capacity and feature variable speed drives, automatic screen changing, and energy savings. - The latest GHM model has a 1200mm diameter grinding chamber, 750-1250mm length, and grinds at 1500rpm for lower noise and wear than 3000rpm mills. - Exosex SPTab is a new mating disruption product for stored product moth control that will be distributed exclusively in Spain by Comercial Química Massó.

1. Digital Re-print - March | April 2012
Grinding by a proven concept makes your choice simple
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2. FEATURE FEATURE
• Two directions of rotation possible
• Motor capacities up to 400kW
• Open rotor design
• Temperature control on main bearings
and chamber
• Feeder with magnet and stone trap
• Ergonomic design
Already, five years ago, the Wynveen
hammer mill underwent a complete makeo-
ver and there was the idea to develop a
hammer mill that will be prepared for the
future and can deal with the challenges of
the future. This means minimal energy con-
sumption and the possibility to answer to the
60 tones/hour. For the smaller capacities the the ergonomic design already available at the
3000-rpm versions are still used. hammer mills with manual screen exchange,
In the enclosed table you will find the which means a horizontal movable screen
various possibilities. By introducing frequency cassette in which 4 screens (so also four dif-
control on the motor, it became possible to ferent perforations selectable) are mounted.
grind ideal structures and particle size. In fact The big advantage versus vertical screen
you can create a new screen set-up but still exchange is the space needed.
using the same screen perforation. When Often an upper hopper is positioned
using a high speed you are able to create fine above the hammer mill, which reduces the
grinding, while with a lower speed a coarser possibilities for vertical screen exchange.
grinding is achieved. To avoid dust and waste of product during
Grinding by a proven concept Frequent
changing
makes your choice simple 1
2
Magnet
Air inlet
the
To answer
grow-
ing need for
Your partner in technology,
equipment and plants for animal-
producing a and aqua feed and petfood.
3 Stone trap
by Willem de Vaan, General Director, Wynveen International BV, The Netherlands 4 Material direction flap great number
5 Pre braking plates of recipes, the
VA C U U M C O AT E R
T
ogether with mixing and used at roller mills and crackers. ing machines and equipment for the animal 6 Temperature sensor screens need
pelleting, grinding is one Roller mills and crackers showed better feed industry, petfood industry and fish 7 Screen to be changed
of the important process- results when it comes to energy consump- industry. 8 Rotor met beaters frequently, for
es when producing animal feed. tion, but the new designed mills feature Recently the company has moved into which reason
adjustable pre-breaker plates, variable speed its new premises, which means a doubling Wynveen
Traditionally, hammer mills are used in drives and automatic screen change systems. of the office and production floor compared need of the various applications required in has designed
the feed industry for grinding raw materials, This results in an energy saving which to the old building. With this new office nowadays-feed mills. the GHM
which is mainly caused by the relatively sim- brings the hammer mill again in a favoured Wynveen International BV is prepared of Most animal feed mills are looking for a version with
ple construction and high variation in particle position, certainly when taking in considera- the future and has made the logical next step grinding concept that can produce the par- an optional
reduction compared to other techniques tion the relatively high costs for wearing parts to meet the growth targets it is aiming for. ticle size that fits with the specific required automatic
on roller mills With its new website, introduced during the coarseness of ingredients needed for the screen change
and crackers. opening of the new building, one can see in a feed to produce. system. This
Table 1: Given the fact glance what capabilities can be offered. The latest version of the Wynveen gives more
that a ham- Besides the design and delivery of hammer mills type GHM has a grinding possibilities to
Diameter Length
Type Capacity t/h* RPM. mer mill also complete turnkey feed mills, Wynveen chamber diameter of 1200mm, which gives grind on vari-
Chamber Chamber
allows grind- International BV is manufacturing the main at a speed of only 1500rpm a hammer tip ous perfora-
ing of mixed equipment like hammer mills, mixers, coater speed at the ideal level of approximately tions without
450-150 1-2 450 150 3000
products, and sifters and conveying equipment. 90m/seconds. The length of the chamber the need
650-275 2-3 650 275 3000
it becomes Wynveen International BV is manufactur- can vary from 750 to 1250mm, depending to stop the
650-375 3-5 650 275 3000
clear that ing hammer mills in a wide range. on the required capacity. The low speed motor during
650-550 7-12 650 550 3000
hammer mills The features of the of hammer mills that gives a lower noise level, less wear and production
670-750 15-20 650 750 3000 still are the can be delivered are: tear and lower bearing load compared to a and loose a
670-1150 20--30 650 1150 3000 majority. • Big diameter 1200mm - 1500rpm 3000-rpm hammer mill. lot of pro-
GHM-750 20-35 1200 750 1500 Wynveen • Diameter 650mm - 3000rpm To suit the various demands in feed mill duction time.
GHM-1000 30-50 1200 1000 1500 International • Capacities from 2t/h up to 60t/h capacities, Wynveen International BV can Wynveen has Wynveen International b.v. Tel: +31 (0)26 - 479 06 99
GHM-1250 45-60 1200 1250 1500 BV has a rich • Frequency controlled drives deliver hammer mills that can deal with dif- chosen to P.O. Box 38 Fax: +31 (0)26 - 479 06 98
tradition in • Manual or automatic screen exchange ferent capacities from two tones/hour up to make use of 6666 ZG Heteren info@wynveen.com
*= depending on raw materials The Netherlands www.wynveen.com
manufactur- • With or without adjustable breaker plates
14 | march - april 2012 Grain &feed millinG technoloGy Grain &feed millinG technoloGy march - april 2012 | 15

3. Exosex SPTab, a unique pheromone they are unable to locate females. enables the use of very low doses of Tel: 02380 603939
product for stored product A male carrying Entostat powder active ingredient and has potential Email: georgina.donovan@exosect.com
moth control, will be exclusively will form a mobile pheromone
N ews March - April 2012
distributed in Spain by Comercial dispenser, producing ‘false’
Química Massó, a market leader in pheromone trails, which attract
NEWS
speciality chemicals for a range of additional males.
Sustainably farmed non-GM crops on the agenda of new industry body
industries including agriculture and Contact between the males
pest control. ensures that the Entostat
A
Commenting from Expocida, powder and the confusion
s demand for non-GMO Foundation has recently become and preservation of the Amazon sensitive about GM in their foods.”
Michael products worldwide effect is automatically the highly and other high conservation value
Niven, Exosect’s key the new custodian of passed Richard Werran, Managing
account manager said, “We have on, this process is called Auto-
increases, a new not- successful ProTerra Certification areas (HCVAs). Director of Cert ID Europe
been working with Massóhas well Confusion™. This product helps
for-profit organisation for been Standard against which non-GM The strength of ProTerra adds, “The aim of The ProTerra
over a year and having recently processors to reduce and/or
launched in The Netherlands to soy producers and supply chain Certification helps mitigate brands’ Foundation is to support the feed
obtained the Europeanregistration eliminate insecticide sprays and
support the Spanish food and feed suppliers have been certifying exposure and liability related to and food industries in supplying
for use in post-harvest storage and consequently, reduces subsequent
industries in sourcing sustainably millions of tonnes of soy for more GMOs and the full range of social non-GM soy with improved
food production, we are absolutely down-time in production
produced, non-genetically modified than six years. and environmental issues. sustainability performance.
delighted to be launching here atin associated with fumigation andby It is anticipated that EU retailers
grains, cereals and derivatives and The program, originally created “A rigorous cer tif ication
Expocida”. soy.
particular spray regimes. already significantly and brands will use the new
Cert ID, has programme such as ProTerra which
Exosex SPTab* is a unique mating Exosex SPTab was first developed
contributed to improving the ProTerra certification Trustmark addresses every aspect of the crop’s
disruption product forstakeholders insustainability ofitthe soy supply to identify on-pack to consumers
Backed by industry the control the UK where was awarded journey, from farm to fork can
of the five key stored product the UK’s Societyanticipated that products produced without
from both Europe and South chain. It is of Food Hygiene contribute significantly to this goal.”
moths which infestFoundation Technology (SOFHT) Award for
America, The ProTerra stored placing the ProTerra certification GMOs and according to advanced As part of its educational agenda,
commodities including genetically ‘Best new product’ in 2008 and was
claims that the growth in cereals, program under the governance sustainability practices. the ProTerra Foundation is hosting
cocoa, pulses and tobacco as an Agrow Awards finalistnon-profit
modified crops is not only a risk to of an independent in 2009. a conference on April 24, 2012 at
well assafety and food security, but The product has since been rolled
food flour mills, confectionary, foundation, managed through Effect upon The Natural History Museum
herbs, spices, dried fruit and nut out throughout Europe where it
causes a devastating impact on the a broad multi-stakeholder environment shocking London. The conference will
production facilities.of farmers and isconsultation process, will amplify “The truth about farming
welfare and lives now available in UK, France, bring together participants from
Exosex SPTab isin acountries Netherlands, Germany, Italy andas genetically modified soy capable
rural communities small its application and effectiveness all stages of the soy supply chain,
tablet as Brazil and Exosect’s now Spain. The product standing as of withstanding being drenched
such consisting of Argentina, well further enhance its was also from South America, Asia and
Entostat™powder formulated launched in Japan in 2011 and is
from where millions of tonnes of an independent quality mark. in toxic pesticides and their effect Europe including retailers, food
with minute quantities ofoil are fully registered in the USA.
soymeal, soybeans and soy the ProTerra certification requires upon the environment and soil manufacturers, feed suppliers,
female sex into the EU every year. Derived from a natural ‘food grade’
imported pheromone common a strict non-GMO limit of less fertility is shocking,” says Augusto farmers and other stakeholders to
to fiveFoundation is dedicated to wax whichpercent adventitious EU Freire, Managing Director of Cert
The of the major moth pests than 0.1 is sustainably harvested explore in-depth the sustainability
of food processing; Plodia from palm trees, Entostat powder
providing the agricultural and authorised GM contamination, ID Brazil. of the soy supply chain.
interpunctella, Ephestia tools that acts as a delivery system for atesting “Understandably EU consumers
food industries with the elutella, strong traceability, PCR wide
Ephestia Kuehniella, Ephestia range of chemistry. points, as well are therefore sensitive about the
they need to achieve improved at ‘critical’ control More inforMation:
figulilella, Cadra cautella.
sustainability performance. Even through ofver y rights of impact of food production on
as protection the slight The ProTerra Foundation
The Exosex SPTab tablet works movement, it develops an
As a result, The ProTerra workers and indigenous people people and the planet, and VERY Website: www.proterrafoundation.org.
Grain &feed millinG technoloGy march - april 2012 | 31
ite
ou r we b s
Vi sit vigan.com
www.
VIGAN manufactures dry agribulk materials handling systems: Latest references
• Portable pneumatic conveyors or grain pumps (100 - 250 tph); PYEONGTAEK PORT
South Korea
• Pneumatic Continuous barge & Ship Unloaders (160 - 800 tph); 1 NIV 400 tph
• Mechanical Continuous Ship Unloaders (up to 1,500 tph); On rails with cable reels
• Mechanical loaders (up to 1,200 tph).
as well as complete storage systems in ports and the agricultural industries. LATTAKIA PORT
Syria
2 Mobile T200
From project design to complete turnkey bulk handling solutions 2 x 250 tph
and port terminals with mechanical and/or pneumatic
Grain&feed millinG technoloGy march - april 2012 | 9
reliable and cost effective equipment.
SWINOUJSCIE
Poland (BUNGE GROUP)
1 Loader 600 tph
An affiliate company of VAN DE WIELE group.
VIGAN Engineering s.a. • Rue de l’Industrie, 16 • B-1400 Nivelles (Belgium)
Phone : +32 67 89 50 41 • Fax : +32 67 89 50 60 • Web : www.vigan.com • E-mail : info@vigan.com
&
Ann A5 victam 0212.indd 1
Grain feed millinG technoloGy march - april 2012 15:37:04
21/02/12 | 7

4. FEATURE
The hammer mills of Wynveen
International BV allow a drive motor up to
400kW.
Furthermore, a so-called open rotor has been
designed with two functions. One is to create
sufficient stiffness and balance and secondly to
minimise the temperature increase while grinding.
For monitoring purposes the main bear-
ings and the chamber are fitted with tem-
perature sensors. All components can also be
delivered in an Atex execution. To make use
of all four corners of the hammers and reduce
the downtime of the machine, the direc-
tion of rotation of the hammer mill can be
changed and the rotor has double holes for
the hammer axles. To ensure a good product
entrance to the mill, a feeder is developed
which contains an integrated, (automatically
cleaned) magnet and a stone trap.
This will make sure that possible metal
parts and/or stones are prevented from end-
ing up in the feed mix. The combination of the
two makes the feeder unique.
Risk analyses
To meet the latest stringent guidelines of
CE regulations, Wynveen International BV has
conducted a risk analyses for its hammer mills.
This has been done for both non-hazard-
ous environments and ATEX environments.
To meet both as a standard, the hammer
mills are equipped with proper earthing and
sensors to detect possible increase of heat.
Where required we make use of a pressure
release membrane and/or flame arrestors.
For reducing the noise and vibration
our hammer mills are provided with shock
absorbers.
Much attention was spent to the ergonomic
aspect. By designing two big doors, the ham-
mer mills are very easy accessible for screen
and hammer exchange. Both doors easily roll
sideways via a rail and wheels and are equipped
with safety switches to make sure that no mis-
takes can be made during maintenance.
Other important points to keep in mind
when designing a grinding plant are not only
the right choice of hammer mill, but also the
correct energy efficient motor type and very
important, an adequate aspiration set-up.
Especially the last item needs special attention.
The capacity of the aspiration fan should
not only be in the right relation to the screen
area of the mill but also depends on products,
exchange of the screen, while the motor is The lower part of the hammer mill is which have to be ground. Depending on the
still running, it is important to maintain, an executed with screens; by making use of the air volume, the necessary filter surface can be
under pressure in the grinding chamber of gravity force a good discharge of product is determined.
the hammer mill. Special inflatable sealing’s possible. The idea of adjustable breaker plates In general, reverse air cleaned filters are
with labyrinth ensure a correct tightness of was to create an asymmetric form (ellipse used, which allow for an air load on the filter
the sealing in operation and stop’s the prod- instead of circle) in the grinding chamber. cloth of approximately two m3/minute of air
uct leaving the grinding chamber. Because of this the product is forced to leave per m2 of filtering area.
To minimise energy consumption adjust- their natural flow and, because of the centrifu- Finally, it is important that the filter unit
able breaker plates are introduced. gal force the product will hit the breaker plate, is not directly positioned beside the outlet
Tests have proven that hardly any grind- as a result it is bounced back and then again product stream of the hammer mill to make
ing takes place below the level of the main gets a hit of the hammer. sure that a good airflow and aspiration is
shaft. By designing two adjustable breaker So a more frequent frontal collision is safeguarded.
plates in the top of the machine, an energy achieved between hammers, breaker plates and
saving of approximately 30–35 percent com- product. By making the breaker plates adjustable More inforMation:
pared to the old designs has been achieved. we can create this ellipse in both directions. Website: www.wynveen.com
16 | march - april 2012 Grain &feed millinG technoloGy

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