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Efficient shredder process

This topic contains 7 replies, has 4 voices, and was last updated by  Mathijs Stroober 3 days ago.

3
Mathijs Stroober mathijsstroober

Efficient shredder process

08/06/2018 at 09:37

For a future project, we are looking for shredder efficiency and also for waste processing (read cleaning, shredding, sorting).
The coming weeks I will post several tests and outcomes of shredding different materials and also different waste compositions.
My research about cleaning will be updated in this topic.

For this project I used the shredder built by @peter-bas.
See pictures below

The motor is 1.5 kW and makes 1430 rotations a minute. With the gear, slowing down 20 times, results in 71.5 rotations a minute for the shredder.

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helper
08/06/2018 at 10:17
3

Material: PP
Amount: 2.7
Method: Shred
Preparation time: –
Prep amount/h: –
Shred time: 60 min
Shred processing kg/h: 2.7
Remarks: Big PP products. Broke it down into smaller pieces during shredding process. Thick walled plastic is difficult to recycle.

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helper
08/06/2018 at 10:47
2

Noice being a engineer student it is always great to have data. Especially “Work” numbers.

helper
11/06/2018 at 09:42
2

Test number 2
Material: HDPE
Amount: 0.617kg
Method: Shred-Wash
Preparation time: –
Prep amount/h: –
Shred time: 6.5min
Shred processing kg/h: 5.70
Remarks: I could not keep up with the pace of the machine while it was shredding bottle caps. I was too slow with cutting the bigger objects

 

Test number 3
Material: HDPE
Amount: 0.617kg
Method: Wash-Shred
Preparation time: 15 min
Prep amount/h: 2.47
Shred time: 4 min
Shred processing kg/h: 9.26
Remarks: This batch was first cut and washed and than shredded. Therefor, the time is shorter while I shredded the same amount of plastic

AVERAGE: 9.02 kg/h

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dedicated
14/06/2018 at 08:58
2

Carry on the great work Thijs 🙂

warrior
14/06/2018 at 09:34
1

Awesome work, thanks for taking the time to provide statistics

helper
14/06/2018 at 17:52
2

Test number 4
Material: PET
Amount: 0.508kg
Method: Wash-Shred
Preparation time: 19.66 min
Prep amount/h: 1.55
Shred time: 4 min
Shred processing kg/h: 7.62

Test number 5
Material: PET
Amount: 0.508kg
Method: Shred-Wash
Preparation time: 6.3 min
Prep amount/h: 4.84
Shred time: 3 min
Shred processing kg/h: 10.16

Test number 6

Material: PET
Amount: 1.2kg
Method: Wash-Shred
Preparation time: –
Prep amount/h:
Shred time: 15 min
Shred processing kg/h: 4.8
Remarks: done by somebody else. Bit slower than trained person

AVERAGE: 7.5 kg/h

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