The Livestock Centre, Tasley,
Bridgnorth, Shropshire,
WV16 4QR, UK.
Tel: 01746 762777
Fax: 01746 764777
E-mail:
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STRAW PROCESSING INTRODUCTION PAGE
Danagri-3S Ltd have been involved with the development, engineering and selling of Cormall straw processing systems since the early 1970's. Back then, most machines were made for conventional sized bales until our renowned RBS260 round bale machine was introduced in 1978. One of the major benefits of the Cormall system is the hammer mill, which both chops and lacerates the straw to open up the absorbent centre.
The traditional image of straw being brought off the field
Over the years we have sold straw plants for:-
  • Bedding - for all animals - dust extracted or natural - all lengths
  • Bedding - mixing straw and woodflakes together
  • Feed - straw based diets for horses and cattle, especially mixing molasses
  • Manufacture of straw board and insulating products
  • Burning - automatic feed of straw to boilers and furnaces
  • Briquetting - for many uses - feed, fuel, waste
  • Pelleting - again for many reasons - feed, fuel, logistics etc
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Most plants in the UK have been sold to chop Wheat, Oat, Barley, Oil Seed Rape & Miscanthus straw or Hay, but Cormall have had experience of chopping many other crops such as Rice straw, Alfa-Alfa, cotton stalks etc. and we have plants producing over 25 tonne per hour of chopped straw!

Whereas most of these plants started as agricultural sidelines, both they and the machines have now developed into semi-industrial and full commercial plant options with a full range of accessories such as bale conveyor tables, hammer mills, cyclones, mixers, buffer silos, discharge hoppers, filters, rotary valves, dust extraction units, augers etc and we have contacts with specialist companies for baling, pelletising, briquetting, palletising, reverse jet filters, spark detection, ducting etc.

Each plant we sell is built to individual customer requirements, whether it be 1 tonne per hour or 25 tonne per hour, sized down to 100mm or 4mm, dust extracted or natural, mixed or un-mixed, hay or straw, round bale or square, there are many options but we offer the help and advice built up over many years experience dealing with these issues.
Straw has many more uses than just for agricultural use, as bedding and as part of a diet. In fact, straw has unlimited application possibilities:
  • Building materials: Straw Chipboard and Insulation Panels.
  • Fuel: Pelleting, Briquettes or Loose straw.
  • Biological processes: Mushroom production, Biogas, Composting etc.
  • Bedding Material: Dust-free straw bales for poultry, pet shops etc.
  • Packing Material: straw-based packing materials.
  • Animal Feed: Diet feed mixtures and molassed feed production.
The equipment can also be used for:
  • Waste: Cutting/chopping paper, packing waste etc.
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Pile of straw bales in the field
This
could be turned into this:
Straw Pellets
Straw Pellets - for feed or fuel.
Straw Briquettes
Straw Briquettes - for fuel or to transport efficiently.
Straw for building uses
Straw for building uses - chipboard, panels etc.
Straw - for feed, bedding, diets, composting, mushroom production, fuel
Or simply straw - for feed, bedding, diets, composting, mushroom production, fuel etc.

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The Process

Loose straw can be processed according to its requirements. This could simply be for loose bedding or cut for specific livestock needs in poultry or pigs; as a diet mix which could require shredding, milling or pelleting; or for industrial uses.

Full length straw
Full length loose straw, a raw material, before going through any processing.
Straw after shredding
Straw after shredding - 80% of the material is below 60 mm and 99 % is below 100 mm.
Straw after going through the hammermill
Straw after going through the hammermill. The screen size is between 2-100 mm.
The effect of the hammermill on the straw
The hammermill crushes the nodes and opens the straw tube: more absorbent and access to the minerals inside the straw.

Removing Stones and Foreign Bodies

Baled straw that has been carted off the field contains a wide variety of foreign bodies which could cause damage to the equipment. Apart from the strings used in the baling, stones, wire and other metal objects can get picked up in the bales, as well as some of the grain. These have to be removed and there are two traps which catch them.

Baler twine can be automatically cut and removed
Baler twine can be automatically cut and removed.
Large steel parts and pieces of wood removed in the primary trap
Large steel parts and pieces of wood removed in the primary trap.
Bigger stones are separated at the primary trap and transported by auger to the secondary trap
Bigger stones are separated at the primary trap and transported by auger to the secondary trap.
At the secondary trap, all material with higher density than straw will be separated off
At the secondary trap, all material with higher density than straw will be separated off.

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Where the equipment is used

Straw Bedding Production - UK
Bedding material - 4.5 tph with 40 mm screen - UK.
Straw Pellet Production - Denmark
Pellet production - 7 tph with 6 mm screen - Denmark.
Straw Panel Production - Canada
Panel board production - 21 tph with 40 mm screen - Canada.
Fuel Production - Asia
Fuel production - Filter with Dust outlet below 5 mg/Nm3 - Asia.

Straw Processing Technologies

  • Bales: Round, square, conventional or loose straw
  • Preparing: Automatic line feeding, cutting and removal of strings
  • Capacities: Working from 250 kg up to 30.000 kg/hour and more
  • Straw Moisture: Moist percentage below 15% going up to 20% maximum
  • Processes Range: Full length, cut down to specific size or into powder
  • Straw Quality: With full dust extraction, just major extraction or none
  • Environment: Filters with dust emissions below 5 mg/Nm3
For further details about how to tailor straw processing equipment into your own system, check out the rest of the Straw pages on this site or telephone Danagri-3S on 01746 762777 or send us an email.

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Copyright © Danagri-3S Ltd
The Livestock Centre, Tasley, Bridgnorth, Shropshire, WV16 4QR, UK.
Tel: 01746 762777. Fax: 01746 764777.
E-mail: