magnus evertsson sandvik rock processing

Quarry Academy 2005

Automation and Feeding

Magnus EvertssonSandvik Rock Processing

2

Quarry Academy 2005

Crusher Control Strategy

New control algoritm

Optimizes crusher performanceProtects the crusher and enhances fatigue lifeControls maximum stresses

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Quarry Academy 2005

New control algorithm

Instantaneouspressure

Average pressure

Average peak pressure

Instantaneouspressure

Instantaneouspressure

Average pressureAverage pressure

Average peak pressure

Average peak pressure

Control average of peak pressure!

4

Quarry Academy 2005

New control algorithm

Max Max

A B

Max Max

A B

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Quarry Academy 2005

New control algorithm

Feed +16-22mm, CSS=6.7mm

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

0 100 200 300 400 500 600 700 800 900 1000

Time x100 [s]

Pres

sure

[MPa

]Unstable crushing conditions

- High amplitude, low average pressure

CSS=6.7mm

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Quarry Academy 2005

New control algorithm

Feed +16-22mm, CSS=4.3mm

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

0 100 200 300 400 500 600 700 800 900 1000

Time x100 [s]

Pres

sure

[MPa

]

Good crushing conditions- Low amplitude, high average pressure

CSS=4.3mm

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Quarry Academy 2005

Feeding conditions

Stable feeding conditions is the basis for high crusher

performance

8

Quarry Academy 2005

Non-Choked Feed

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Quarry Academy 2005

Feeding conditions

Non-choke Feed

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

0 1000 2000 3000 4000 5000 6000

Time x100 [s]

Pres

sure

[MPa

]

Non-choked feed- High pressure amplitudes

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Quarry Academy 2005

Feeding conditions

Choke Feed

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

0 1000 2000 3000 4000 5000 6000

Time x100 [s]

Pres

sure

[MPa

]

Choked feed- Low pressure amplitudes

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Quarry Academy 2005

Segregated feed

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Quarry Academy 2005

Feeding conditions

Misaligned Feed

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000

Time x100 [s]

Pres

sure

[MPa

]

Misaligned/segregated feed- High pressure amplitudes

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Quarry Academy 2005

Feeding conditions

Aligned feed

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000

Time x100 [s]

Pres

sure

[MPa

]

Aligned feed- Low pressure amplitudes

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Quarry Academy 2005

Splitter

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Quarry Academy 2005

Rotary Distributor for Crusher