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In-house manufacturing

The Shredder

For slaughterhouse waste and wood material. Load it, close the lid and start – then it shreds automatically.

See the two widths
The Shredder: the hopper at the top, the shredder-shaft housing with the blue gear motors and the stand with the 3 m³ bin below

1,200 mmInlet, the Shredder

2,400 mmInlet, the Shredder Wide

Shredder motors
2 × 7.5 kW
Shredding time
0–20 min, adjustable
Discharge
3 m³ bin or conveyor

01Why the Shredder

The wastebecomes heat.

What otherwise costs money to get rid of becomes fuel. The Shredder makes residues burnable – and the boiler turns them into heat you don't have to buy.

The Shredder next to a covered wood chip store, a pile of chips in the store and forest behind it, one evening
  1. 01

    Residues

    Pallets, scrap wood and offcuts – what otherwise costs money to get rid of – become fuel for your own boiler.

    Pallets · scrap wood · offcuts
  2. 02

    Your own forest

    If you have your own forest, you shred wood that is not good enough for timber or pulp into your own wood chips – and burn them yourselves.

    Wood · planks · branches
  3. 03

    Slaughterhouse waste

    The Shredder shreds slaughterhouse waste so it can be burned on site and become heat for the plant.

    Biotherm burner for slaughterhouse waste

Heat from your own forest

0.15–0.20SEK/kWh

Bought-in wood chips cost somewhat more. Figure from 2023.

The waste
A cost to get rid of
Fuel
Wood chips
Bought in
From your own forest
The heat
Bought in
From your own material

In the long run the waste becomes an asset. We calculate the payback time for your particular plant.

02How it runs

Load.Close.Start.

Shredding runs on a timer – while you get on with other things. The lid is opened and closed by an electric actuator, and the shredder shafts only run when it is closed.

Inlet
1,200 × 800 mm
Shredder motors
2 × 7.5 kW
Shredding time
0–20 min
Bin
3 m³or conveyor belt

Open the lid and load the hopper – pallets and recycled wood.

Runs only with the lid closed.

If the lid is opened during shredding, the shredder shafts stop and the process must be restarted.

Safety switch
Confirms the lid is closed before operation.
Limit switch
Stops the actuator when the lid is fully open.
Remote control
Wireless, for the lid. Available as an accessory.
KA1 control
Kross Automatik, with automatic and manual operating modes.
Start code
Before every shredding cycle. Status indication, A and B alarms.
Protection
Motor protection and emergency stop.

03Two widths

Standardor Wide.

The Shredder comes in two widths – with a shaft width of 1,200 or 2,400 mm. The wide version takes longer planks and longer material that could otherwise get stuck in the hopper.

The Shredder: the shredder-shaft housing with the hopper and lid on the stand, the bin below

The Shredder

1,200×800mm

Inlet

Two shredder shafts for slaughterhouse waste and wood material.

The Shredder Wide: shredder shafts and housing twice as long, a hopper with vertical short sides, a longer lid and stand, and the same bin

The Shredder Wide

2,400×800mm

Inlet

Double the shaft width – for longer planks and longer material. The hopper has vertical short sides.

1,200 mm 2,400 mm 800
The inlets from above, to scaleThe Shredder, 1,200 × 800 mm, inside the Shredder Wide, 2,400 × 800 mm. Same depth, double the width.
Specification The Shredder The Shredder Wide
Inlet1,200 × 800 mm2,400 × 800 mm
Shaft width1,200 mm2,400 mm
LoadingHopper with closable lidHopper with vertical short sides and closable lid
MaterialSlaughterhouse waste and wood materialLonger planks and longer material
Same for both
Shredder motors2 × 7.5 kW, 15 kW in total
Shredding time0–20 min, factory-set to 5 min
Lid openingElectric actuator, 0.55 kW*
Control systemKA1 – Kross Automatik, automatic and manual
ProtectionMotor protection and emergency stop
Discharge3 m³ tractor bucket or conveyor
AccessoriesWireless remote control for the lid

* Actuator motor output according to the KA1 User Manual, version 1.0. 15 kW refers to the shredder motors and 3 m³ to the volume of the collection bin – the same for both shredders. Data according to Biotherm Heat AB, subject to change.

04Construction

Part by part.

The lid, the hopper, the shafts, the motors and the bin, one by one. The Shredder is manufactured in-house.

Exploded view of the Shredder: the open lid, the hopper, the shredder shafts with the shredder motors, the stand with the control cabinet, and the 3 m³ bin in front
  1. 1

    Electric lid

    0.55 kW actuator and limit switch.

  2. 2

    Hopper

    Inlet 1,200 × 800 mm.

  3. 3

    Two shredder shafts

    Shred slaughterhouse waste and wood material.

  4. 4

    Shredder motors

    2 × 7.5 kW, 15 kW in total.

  5. 5

    KA1 control

    Shredding time 0–20 minutes.

  6. 6

    Bin, 3 m³

    Or a conveyor belt.

05The cycle

From residueto heat.

What would otherwise cost money to get rid of becomes fuel. The Shredder makes the residues burnable – and the boiler turns them into heat you no longer need to buy.

  1. 1

    Residues

    Wood offcuts, pallets and scrap. The Shredder also handles slaughterhouse waste.

  2. 2

    The Shredder

    Shreds the material automatically, for a set time.

  3. 3

    Fuel

    The boiler burns the shredded material.

  4. 4

    Heat

    For the farm or the property.

  5. Money saved

    Scrap becomes fuel instead of a cost – and you no longer have to buy the heat.

A farm in snow, seen from above at dusk: a pile of wood offcuts, the Shredder, a pile of wood chips by a conveyor belt, the boiler house with its chimney and the pipes to a lit workshop
The Shredder installed under a roof in front of a red wall; the 3 m³ bin stands beneath it

06Discharge

Choose where thematerial goes next.

01

Tractor bucket, 3 m³

The bin stands beneath the Shredder and collects the material for further handling.

02

Conveyor belt

A belt beneath the Shredder carries the material on automatically – for example to a wood chip store when shredding wood.

Free heat-load calculation

Let's calculate your heating.

Tell us what you want to shred and where the material needs to go. We take responsibility for the whole solution – from the Shredder and the fuel store to delivered heat.

Call +46 (0)921-578 00

info@biothermheat.comVästerås · Luleå

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