The innovative solution for primary crushing

Eccentricroll crushersERC®

Mining Technologies

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Crushing hard rock in mines and quarries, no matter if in opencast or underground applications, is a challenge where both jaw crushers and gyratory crushers have proven themselves for decades. But the downside is that their large installation height means they require extensive and costly structures and caverns.

With its new eccentric roll crusher (ERC®) thyssenkrupp Industrial Solutions has developed a groundbreaking solution for the primary crushing of hard rock and ore. The ERC® is particularly compact and robust, ideally suited for underground and surface operations. Its innovative design with an integrated screen offers significantly higher efficiency and capacities than conventional primary crushers.

ERC® – The smartest tool for crushing hard rock

Design and operating principle

Up to 50 % less installation height!

Jaw gyratory crusher | Jaw crusher | ERC® eccentric roll crusher Discrete Element Method (DEM) Simulation

Housing

Integrated static grizzly

Roll with eccentric shaft

Hood

Jaw

Hydraulic gap setting system

V-belt drive

Hydraulic power unit

Base frame

Flywheel with movable safety cover

Fines are screened out by means of an integrated grizzly and bypassed through the crusher housing.

The coarse particles are transferred into the crushing chamber.

The rotation of the drive motor is transmitted via V-belt drive to the eccentric shaft of the roll. This is generating the oscillating motion of the freely rotatable roll with constant large stroke in the entire crushing cavity.

Consequently, the crushing gap between the roll and the jaw in the crusher housing changes constantly and the feed material which has not been screened out is continuously crushed between the roll and the jaw as it falls by gravitation until the product exits the crushing chamber at the bottom.

A patented fully hydraulic gap setting/retraction system allows for automatic adjustment of the gap, compen- sation of liner wear and release of tramp metal or other-wise uncrushable material content.

More compact

More energy efficient

More powerful

The smartest tool for crushing

hard rock

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Advantages – How you benefit

The particular compact design and less number of components simplifies transportation, installation and maintenance.

The integrated grizzly with efficient bypassing of fines boosts crusher capacity, reduces energy consumption and increases liner lifetime.

A particularly effective kinematic of the oscillating roll with constant stroke in the entire crusher cavity allows for higher reduction ratio and more effective use of crushing energy.

Under load, the freely rotatable roll slowly turns backwards which distributes the loads over the entire roll circumference and ensures uniform wear and maximized lifetime of the roll liners.

The high moments of inertia of the roll and flywheels contribute to accumulated crushing energy and effectively compensate for the load peaks that occur during comminution.

The symmetrical arrangement of the roll allows the crusher to be balanced with great precision, which significantly reduces machine vibrations and loads on surrounding structures and makes the crusher also ideal for use in mobile and semi-mobile crushing systems.

A patented fully hydraulic gap setting/ retraction system for the jaw offers a wide range of gap setting for safe and simple adjustment of product size, compensation of liner wear and release of tramp metal or otherwise uncrushable material content.

Revolutionary machine concept – compact, simple and robust

Two machines in one – unique integrated pre-screening boost capacity

The ERC® crushing principle – highly energy efficient and powerful

Ideal suited for every application –efficient balancing pays off

The ERC® hydro-setting – the smart way of equipment protection and flexible machine setting

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ERC® 18-14, primary crushing plant for gabbro.

4 Eccentric roll crushers ERC® 5

All data should be used as a guide only and are not guaranteed. They depend on the feed material characteristics and the actual crusher configuration.

Technical data Performance data

1) Weights indicated do not include base frame, drive motor and tools. Weights may vary depending on actual machine configuration.2) Motor rating range applicable for < 1,000 m altitude. Actual motor rating depending on the feed material characteristics, desired product size,

actual machine configuration and real elevation.3) Maximum vertical dimension between jaw liners and roll liners. The maximum feed particle size in 2 dimensions shall be at least 20 % smaller.4) Standard grizzly length. Actual length may vary depending on specific machine configuration.5) Range of gap adjustment CSS. CSS = Close Side Setting means the narrowest dimension measured between the tooth base of the roll liner and the jaw liner

at the bottom of the crushing chamber.

Model

ERC® 18-14

ERC® 22-20

ERC® 25-25

ERC® 25-30

ERC® 25-34

Crusher product size distribution depending on gap setting

Pass

ing

[%]

Screen opening [mm]

Model

ERC® 18-14

ERC® 22-20

ERC® 25-25

ERC® 25-30

ERC® 25-34

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[mm]

3,200

3,800

4,300

4,300

4,300

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[mm]

3,000

3,600

4,000

4,300

4,450

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[mm]

5,100

5,900

6,700

7,400

7,700

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[mm]

2,080

2,800

3,300

3,900

4,300

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[mm]

3,200

3,950

4,500

5,000

5,400

Power 2)

[kW]

160 - 300

300 - 450

450 - 600

500 - 700

600 - 800

Roll diameter

[mm]

1,800

2,200

2,500

2,500

2,500

Grizzly length 4)

[mm]

1,100

1,250

1,400

1,800

2,100

GapCSS 5)

[mm]

100 - 220

120 - 260

120 - 260

140 - 300

140 - 300

Feed opening 3)

[mm]

1,000

1,200

1,280

1,280

1,280

Roll width

[mm]

1,400

2,000

2,500

3,000

3,400

Weight 1)

[t]

83

138

185

215

240

Detailed arrangement drawing with dimensions, foundation loads and clearance requirements for maintenance are available on request.All data should be used as a guide only and are not guaranteed. They depend on the feed material characteristics and the actual crusher configuration.

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1) Crusher capacity calculated based on a typical run-of-mine feed material with an average raw density 2.8 t/m³ and max. feed size ≤ 80 % ofcrusher feed opening. Actual values are depending on feed material characteristics (e.g. hardness UCS, feed particle size distribution, moisture content), the desired product size and the actual machine configuration (e.g. gap setting CSS). Range represents the variation for typical feed materials.

Model

ERC® 18-14

ERC® 22-20

ERC® 25-25

ERC® 25-30

ERC® 25-34

Crusher capacity 1) in metric tph depending on gap setting

Gap setting CSS in mm

100

550 – 1,100

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120

650 –1,250

1,050 –2,100

1,450 – 2,950

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140

700 – 1,300

1,150 – 2,300

1,600 – 3,250

2,150 – 4,300

2,600 – 5,200

160

750 – 1,500

1,250 – 2,500

1,750 – 3,500

2,350 – 4,650

2,850 – 5,650

180

800 – 1,600

1,350 – 2,700

1,900 – 3,800

2,500 – 5,050

3,050 – 6,100

200

850 – 1,700

1,450 – 2,900

1,050 – 4,100

2,700 – 5,400

3,300 – 6,550

220

900 – 1,850

1,550 – 3,050

2,200 – 4,350

2,900 – 5,800

3,500 – 7,000

240

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1,650 – 3,250

2,300 - 4,650

3,100 – 6,150

3,750 – 7,450

260

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1,750 – 3,450

2,450 – 4,900

3,250 – 6,550

3,950 – 7,900

280

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3,450 – 6,900

4,200 – 8,350

300

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3,650 – 7,300

4,400 – 8,800

6 Eccentric roll crushers ERC® 7

Mining Technologies

thyssenkrupp Industrial Solutions AG Graf-Galen-Straße 17 59269 Beckum, Germany T: +49 2525 99 0 www.erc-crusher.comwww.thyssenkrupp-industrial-solutions.com

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