NORDBERG LT1213
application guide lines
LT1213 CAN BE USED FOR CRUSHING
NATURAL ROCK OR RECYCLING MATERIAL
IMPACTOR ADVANTAGES
•HIGH REDUCTION RATIO
•EXCELLENT END PRODUCT SHAPE
•HIGH CAPACITY
•SAME UNIT CAN BE USED
AS A PRIMARY AND AS
A SECONDARY CRUSHER
•VARIOUS END PRODUCTS CAN
BE CRUSHED WITH ONE CRUSHING
STAGE
•RECYCLING (SEPARATE THE STEEL
FROM THE END PRODUCT)
•FINE PRODUCT
IMPACTOR DISADVANTAGES
•NOT ECONOMICAL TO CRUSH
ABRASIVE MATERIALS
•CAN’T BE USED FOR CRUSHING
VERY HARD MATERIALS
LT1213 - CRUSHING NATURAL ROCK
FEED MATERIAL LIMITATIONS
• AVERAGE BOND WORK INDEX
LESS THAN 16
•MAXIMUM IMPACT WORK INDEX
LESS THAN 23
•INDICATIVE ABRASSION INDEX
LIMITS FOR ECONOMICAL OPERATION
180 g/t, MANGANESE STEEL HAMMERS
230 g/t, MARTENSITIC STEEL HAMMERS
550 g/t, CHROMIUM CAST IRON HAMMERS
•TYPICAL ROCKS
-LIMESTONES, DOLOMITIC LIMESTONE,
GYPSUM,TALC,CHALK,MARBLES,MARL,
SCHISTS,SLATES
•THREE SPEED RANGE 450, 520, 600
TOP FEED SIZE
mm
420x700x1120
360x600x960
180x300x480
120x200x320
60x100x160
MAX. SETTING
MINIMUM SETTING
mm
80
60
50
40
30
100
LT1213 - CRUSHING RECYCLING MATERIALS
TYPICAL RECYCLING MATERIALS
•CONCRETE WITH AND WITHOUT REBARS
•MIXED DEMOLITION MATERIAL-CONCRETE,
BRICKS,WOOD,STEEL…
•ASPHALT
TOP FEED SIZE
mm
420x700x1120
360x600x960
180x300x480
120x200x320
60x100x160
Max setting
MINIMUM SETTING
mm
80
60
50
40
30
100
PRE-SORTING OF THE FEED MATERIAL
SORTING OF THE FEED MATERIAL
•CRITICAL FOR SUCCESSFUL RECYCLING OPERATION
•BREAKING DOWN THE OVER SIZE OF THE FEED MATERIAL WILL INCREASE THE CAPACITY
•UNCRUSHABLE MATERIALS MUST BE PULLED OUT FROM FEED MATERIAL
•MAX. RE-BAR DIAMETER 19 mm AND LENGTH 1000 mm
LT1213 - PROCESS PARAMETRES
FEED CAPACITY
SETTING
HAMMER CONFIGURATION
•FOUR HAMMERS
•SLOTTED HAMMERS
ROTOR SPEED
POWER CONTROL
HAMMER MATERIAL
SETTING - EFFECT TO PRODUCT CURVE
•ATTACHED PICTURE SHOWS THE EFFECT TO PRODUCT
CURVE WHEN SETTING IS CHANGED FROM 100 mm TO 30 mm
•REDUCTION RADIO INCREASE
•POWER DRAW INCREASES FROM 149 kW TO 212 kW
•THE 90% POINT MOVES FROM 120 mm TO 65 mm
90
Feed curve
ROTOR SPEED - EFFECT TO PRODUCT CURVE
•ATTACHED PICTURE SHOWS THE EFFECT TO PRODUCT CURVE WHEN ROTOR SPEED IS CHANGED FROM
450 RPM TO 750 RPM
•POWER DRAW INCREASES FROM 84 kW TO 217 kW
•THE 90% POINT MOVES FROM 100 mm TO 50 mm
•AMOUNT OF -10 mm INCREASES FROM 30% TO 45%
•EFFECT OF ROTOR SPEED TO HAMMER LIFE
EXAMPLE FROM FRENCH QUARRY
-ABRASSIVITY INDEX 1300 g/t
-SPEED DROPPED FROM 650 RPM TO 400 RPM
-HAMMER LIFE INCREASED FROM 50 HOURS TO 250 HOURS
90
Feed curve
HAMMER CONFIGURATION
HEIGHT LIMIT FOR
CHANGING HAMMERS
60 mm
4 HAMMERS
SLOTTED HAMMERS
NUMBER OF HAMMERS EFFECTING ON PRODUCT CURVE
•90% POINT IS 80 mm WITH FOUR OR TWO HAMMERS
•AMOUNT OF -50 mm DECREASES FROM 64% to 61%
100
Hard rock
90
90
80
Cumulative Passing [%]
70
Speed 450 rpm
4 hammers-338mtph
Setting 90 mm
Slotted hammers-393mtph
High capacity
60
Feed
50
40
30
20
10
0
0.01
0.1
1
10
Square Scrren Opening [mm]
100
1000
QUALITIES OF HAMMERS
•MANGANESE STEEL
The only quality enabling to crush without breakage
Concrete
50 to 100 hours
Demolition
40 to 200 hours
Asphalt
40 to 150 hours
•MARTENSITIC STEEL
With same risks of breakage according to the materials processed and reduction requested.
Resists better to the wear than manganese
Concrete
60 to 150 hours
Demolition
48 to 300 hours
Asphalt
48 to 225 hours
•CHROMIUM CAST IRON
Good for the asphalt processing if there is not tramp iron.
High risks of breakage in concrete and demolition but the financial balance can be
positive if the customer is aware of such risks and accepts them.
Concrete
150 to 400 hours
Demolition
120 to 800 hours
Asphalt
120 to 600 hours
FEED CAPACITY - EFFECT TO PRODUCT CURVE
•WHEN FEED CAPACITY IS INCREASED END PRODUCT CURVE
WILL BE SLIGHLY COARSER
•WHEN FEED CAPACITY IS INCREASED FROM 50 TPH TO 250 TPH
POWER DRAW IS INCREASED FROM 61 kW TO 214 kW
AUTOMATIC FEEDER CONTROL
•ADJUSTABLE FEED CONTROL
•ADJUSTABLE POWER LIMITS
•ENABLE TO STABILIZE THE MATERIAL FLOW TO FOLLOWING PROCESS
Feed Speed %
Example 2
70%
Feed max
area
Example 3
50%
Feed min
area
35%
Example 1
CLOK area
100 bar
CLLD area
200 bar
350 bar
Crusher Pressure bar
SUMMARY
Slotted
NORDBERG LT1213 APPLICATIONS
Customer:
Customer segment:
Country:
Typical feeds:
Typical products:
Gebr. Hanssen BV
recycling contractor
Netherlands
concrete,asphalt,mixed demolition debris
concrete -40 mm (nominal capacity 180 t/h)
asphalt -20 mm (nominal capacity 100 t/h)
Customer:
Customer segment:
Country:
Typical feeds:
Typical products:
Brabant BreCom bv
recycling contractor
Netherlands
concrete,asphalt,mixed demolition debris
concrete -40 mm (nominal capacity 180 t/h)
asphalt -20 mm (nominal capacity 100 t/h)
Customer:
Customer segment:
Country:
Typical feeds:
Typical products:
Wimmer&Wecks
quarry and contracting
Germany
hard stone, recycling
in customers quarry -50 mm, average capacity
280 t/h, bond index 22,4 kW/t, shatter
index 41, dolomite, feed size -500 mm
Customer:
Customer segment:
Country:
Typical feeds:
Typical products:
Kurt Eberle ag
recycling contracting
Switzerland
asphalt, concrete
asphalt -20mm, capacity 100 t/h + 5-10%
oversize
Customer:
Customer segment:
Country:
Typical feeds:
Typical products:
Hagedorn Recycling GmbH
recycling contractor
Germany
Mixed recycling material reinforced concrete, asphalt, bricks,
top soil, rock 0-600 mm
size 0-8 mm 8-45mm 45-mm / 150 mtph
Customer:
Customer segment:
Country:
Typical feeds:
Typical products:
Simmerather Recycling GmbH, Stephan Brown
recycling contractor
Germany
Mixed recycling material concrete, asphalt, rock, bricks, top soil
0-700 mm
size 0-4 mm 4-45mm 45-100mm / 25 mtph
Customer:
Customer segment:
Country:
Eckl
Aggregates Contractor
Germany
Typical feeds:
Typical products:
Limestone 0-400 mm
size 0-120 mm / 183 mtph
Customer:
Customer segment:
Country:
Baumaschinen Alfred Plötz
Aggregates Contractor
Germany
Typical feeds:
Typical products:
Granite 0-150 mm
size 0-32 mm / 130 mtph
Customer:
Customer segment:
Country:
Wimmer&Wechs
Aggregates Contractor
Germany
Typical feeds:
Typical products:
Gravel 0-200 mm
size 0-32 mm / 260 mtph