mining technologies eccentric roll crushers erc - thyssenkrupp · applications, is a challenge...
TRANSCRIPT
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
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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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