General Design and Sizing of Comminution Equipment
INTERNAL
Mining mineral processing circuits and trends • Presentation Overview: -
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Common mining circuits Mill designs and their application Mining industry trends Current mining circuits Crushers in future market trends
What is next?
…….
Comminution Product role
• Crushing and grinding processes liberate valuable minerals from ores through a series of size reductions
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Grinding materials in horizontal mills with or without media dates back to the late 1800's
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Since that time, Metso has designed and manufactured more than 12,000 grinding mills
1m
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100 mm
10 mm
1 mm
100 micron
10 micron
1 micron
INTERNAL
Crushing and grinding of ore and minerals • Rock crushing and grinding is accomplished in stages: – First Stage Primary Stage of Crushing
– Second Stage Secondary Stage of Crushing / Grinding
– Third Stage Tertiary Stage of Crushing / Grinding
– Fourth Stage Grinding / Finishing Stage
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INTERNAL
Common mineral processing circuits • 2 or 3 stage crushing Rod Mill Ball Mill Flotation • 3 Stage crushing Ball Mill Flotation • Primary Gyratory Cone HPGR Ball Mill Flotation • Primary Gyratory AG Mill Ball Mill Flotation • Primary Gyratory AG Mill Pebble Mill Pebble crusher Flotation
• Primary Gyratory AG Mill Ball Mill Flotation • Primary Gyratory SAG Mill Pebble Mill Pebble crusher Flotation
• Primary Gyratory Pre- Crusher SAG Mill Ball Mill Pebble crusher Flotation
• 3 stage crushing Heap Leach 5
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Application of State of the Art Comminution Circuit Selection Non Abrasive
Abrasive
Fine
Coarse
Fine
Coarse
SS SAG SS AG 3C Ball SABC
SS SAG/C SS AG/C 3C Ball SABC 2C SS SAG Rod
SS AG AB 3C Ball SABC ABC APC
SS SAG/C SS AG/C 2C SS SAG SABC 2C SABC ABC
4 < Mtpa <8
SABC HPGR Ball 2C SABC
SABC HPGR Ball 2C SABC
SABC HPGR Ball 2C SABC ABC APC HPGR Peb
SABC HPGR Ball 2C SABC ABC APC HPGR Peb
> 8Mtpa
SABC HPGR Ball
SABC HPGR Ball 2C SABC
SABC HPGR Ball 2C SABC ABC HPGR Peb
SABC HPGR Ball 2C SABC ABC HPGR Peb
< 4Mtpa
Source: Putland, B. (2006) “Comminution Circuit Selection – Key Drivers and Circuit Limitations”, SAG 2006, Vol 2. pp 342-355
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Application of State of the Art Comminution Circuit Selection Non Abrasive
Abrasive
Fine
Coarse
Fine
Coarse
SS SAG SS AG 3C Ball SABC
SS SAG/C SS AG/C 3C Ball SABC 2C SS SAG Rod
SS AG AB 3C Ball SABC ABC APC
SS SAG/C SS AG/C 2C SS SAG SABC 2C SABC ABC
4 < Mtpa <8
SABC HPGR Ball 2C SABC
SABC HPGR Ball 2C SABC
SABC HPGR Ball 2C SABC ABC APC HPGR Peb
SABC HPGR Ball 2C SABC ABC APC HPGR Peb
> 8Mtpa
SABC HPGR Ball
SABC HPGR Ball 2C SABC
SABC HPGR Ball 2C SABC ABC HPGR Peb
SABC HPGR Ball 2C SAG + VTM ABC HPGR Peb
< 4Mtpa
Source: Putland, B. (2006) “Comminution Circuit Selection – Key Drivers and Circuit Limitations”, SAG 2006, Vol 2. pp 342-355
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BALL MILL TYPICAL FLOWSHEET
F80 10 – 13mm
Jaw or PG
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HP or MP cones depending on capacity
SAG MILL TYPICAL FLOWSHEET Pebble -90+10mm Pebble crusher HP or MP
SAG Mill 80%<13mm 80%<100 – 150mm
SAG screen
SAG Mill: with/without trommel 9
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SAG screen Typical configuration • 2 decks • 2nd deck opening 10 – 13mm
PEBBLE CRUSHER
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Collahausi – Chile Copper Ore
Barrick Veladero and Alto Chicama Heap Leaching of 2 stages (open circuit) 2x XH-2473-2 For 1100t/h each Open circuit
Recently, we sold a MF2473-2 for Veladero plant
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INTERNAL
Cerro Verde, Peru
Flowsheet - Oxides Plant, 3 stages in close circuit Allis Chalmers 6089
Nordberg BS 12’x27’DD Feed rate: 2000t/h
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Date Author Title
Nordberg BS 12’x27’DD Feed rate: 2000t/h
INTERNAL
Cerro Verde, Peru Oxides Plant – BS 12’x27’DD (Banana 1)
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Screen live weight = 26.800kg Isolation Frame weight = 13.000kg Total weight = 39.800kg © Metso
Date Author Title
Codelco Gaby, Chile Flowsheet – Copper Ore PG Metso 60110
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INTERNAL 2x Metso BS 12’x24’DD Feed rate: 2150 t/h (each) 2x MP100
4x Metso BS 12’x24’DD Feed rate: 1100 t/h (each) © Metso
Date Author Title
PROCESOS DE CONCENTRACIÓN
To be possible to the valuable minerals it is necessary that the its particles are liberated from waste particles. For this liberation process, crushing and/or grinding processes are utilized.
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INTERNAL
Overview - Crushing • Primary Mining Crushers • Secondary Mining Crushers • Tertiary Mining Crushers • Application Group Sizing Techniques
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Date Author Title
Crusher Examples per Stage PRIMARY - 1st Stage è
Jaw Crusher
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Symons Cone Crusher - Short Head
è
Gyratory Crusher
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Omnicone Cone Crusher - Short Head
è
Horizontal Shaft Impact Crusher
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HP Series Cone Crusher - Short Head
è
Twin Shaft Sizer
è
MP Series Cone Crusher - Short Head
è
GP Series Cone Crusher
è
Horizontal Shaft Impact Crusher
è
Vertical Shaft Impact Crusher
SECONDARY - 2nd Stage
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TERTIARY - 3rd Stage
è
Secondary Gyratory Crusher
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Symons Cone Crusher - Standard
è
Omnicone Cone Crusher - Standard
è
HP Series Cone Crusher – Standard
è
Gyradisc Cone Crusher
è
MP Series Cone Crusher – Standard
è
è
GP Series Secondary/Tertiary Cone Crusher
HP or MP Series Cone Crusher - Short Head
è
Vertical Shaft Impact Crusher
è
Horizontal Shaft Impact Crusher
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QUATERNARY - 4th Stage
INTERNAL
Primary Crushers
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Date Author Title
INTERNAL
Required Sizing Information • Feed Gradation - Material Top Size or F80 at a Minimum • Feeding Method - What type of Feeder if there is one • Material Information - Abrasion Index - Work Index - Moisture Index - Clay Content Percentage • Tonnage - Instantaneous vs. Average - Design vs. Nominal • Product Requirements - P80 - maximum topsize 19
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Date Author Title
INTERNAL
Primary Jaw Crusher (Feed Gradation) • If “Feed Gradation” is not known, then you will need to assume one.
• Feed “Top Size” will determine the smallest Jaw Crusher that can be used for the application.
• The gradation will be used to determine how much of the Feed will need to be crushed by Jaw Crusher and how much will be scalped before Jaw Crusher.
• Rule of Thumb:
Generally you scalp the feed to a Jaw Crusher at the Closed Side Setting (CSS).
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INTERNAL
Primary Jaw Crusher (Feed Method) • Rule of Thumb:
Feed to a Jaw Crusher is generally scalped by removing the “Fines” - Fines are generally defined as the material less than the CSS
• A vibrating Grizzly Feeder is most often used to scalp material before the Jaw. - Pan Feeders and Scalping Screens can also be used
• Rule of Thumb: -
Feed size approximately 80% of the Gape
Gape is the distance between jaw dies at the point of entrance of jaw crusher.
Gape
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Date Author Title
INTERNAL
Primary Jaw Crusher (Material Information) • Abrasion Index: -
Abrasion Index has no impact on the Jaw Crusher Selection. It is only used to determine “Liner Life”.
• Work Index: -
Work Index is used to determine the minimum CSS. If compressive strength of material is over 60,000 PSI (415 MPa) Consult Factory to determine if a jaw can be used.
• Moisture / Clay content -
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Effect of moisture is usually minimal up to 5-8%. Clay in conjunction with moisture can affect the crusher throughput
Date Author Title
INTERNAL
Primary Jaw Crusher (Tonnage) • Instantaneous Tonnage: -
Instantaneous tonnage is the theoretical maximum tonnage that the crusher can handle
• Average Tonnage: -
Average Tonnage is the tonnage that the crusher can handle over a long period of time.
• The instantaneous tonnage is always higher than the Average tonnage. - AVERAGE TONNAGE = (0.8) x Instantaneous Tonnage
• Design Tonnage = Instantaneous Tonnage • Average Tonnage = Nominal Tonnage
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INTERNAL
Primary Jaw Crusher (Product Size) • Rule of Thumb:
The “Top Size of the product from a Jaw Crusher is generally 1.6 times the CSS. - i.e. CSS of Jaw Crusher is 100mm -> TopSize of Product = approx. 160mm
• Rule of Thumb:
Depending on material a jaw will produce about 70% passing the CSS on average.
• Typically the CSS will depend on the opening of the following crusher and Reduction Ratio (RR). - Maximum RR for Jaw Crusher is 10:1
F 80 Reduction Ratio P80
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Date Author Title
Primary Jaw Crusher Sizes, Feed Openings, Capacities and Settings Crusher
Feed Opening maxstone (A x B)
Capacities
Settings
mm
mm
MTPH
mm
C80
510 x 800
410
55 - 335
40 - 175
C100
760 x 1000
610
125 - 490
70 - 200
C96
580 x 930
465
105 - 390
60 - 175
C106
700 x 1060
560
150 - 500
70 - 200
C116
800 x 1150
640
165 - 520
70 - 200
C3054
760 x 1375
608
210 - 670
70 - 200
C110
850 x 1100
680
160 - 555
70 - 200
C125
950 x 1250
760
245 - 755
100 - 250
C140
1070 x 1400
860
325 - 840
125 - 250
C145
1100 x 1400
900
335 - 950
125 - 275
C160
1200 x 1600
960
430 - 1145
150 - 300
C200
1500 x 2000
1200
630 - 1435
150 - 300
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A
B
INTERNAL
Primary Jaw Crusher Sizing Example • Information from Customer -
900 MTPH Design into Primary Station
Top Size: 700mm Medium Gradation Using Vibrating Grizzly Feeder
• Crusher’s CSS = Primary Scalper Cut Size • 440 MTPH go to crusher
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Very Abrasive Minus 240mm product Bulk Density = 1.6 mt/ m3
• WHAT SIZE JAW CRUSHER TO APPLY? • WHAT SETTING IS THE JAW SET AT? • WHAT IS THE REDUCTION RATIO?
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INTERNAL
Primary Gyratory Crusher – Required Sizing Information • Feed Gradation -
Topsize determines feed opening required Feed topsize should be maximum of approximately 80% of feed opening F80 is a feed parameter that determines the fines correction factor Percentage of material in feed less than ½ the CSS is a feed parameter that determines the “fines correction factor”
• Bulk Density - TPH throughput is directly proportional to bulk density • Work Index - Power draw directly proportional to work index and this could dictate machine selection if Work Index is high
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High Work Index materials may require special chamber design to limit power draw.
Date Author Title
SUPERIOR Product Line Current MK-II Model Sizes
• • • • • •
•
42-65 and 50-65 = 375kW 54-75 and 62-75 = 450kW 60-89 = 600kW 60-110 = 1000kW 60-110E = 1200kW Basically 4 head sizes, with SUPER SPIDER upgrades creating the other 2 increased feed opening versions. Product Naming
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1st number = feed opening in inches 2nd number = mantle diameter in inches
Primary Gyratory Crusher Application GYRATORY crusher is a “volumetric” machine
• Material flows through chamber because of effect of gravity • The geometry of the mantle and concave determine the volume of material that will flow through the chamber
• The larger the diameter of the machine (mantle diameter) the more volume of material will flow through the chamber
• Volumetric throughput is also directly proportional to operating speed (gyrations per minute)
• Volumetric throughput varies with the throw of the crusher (a larger throw allows a larger volume of material to flow through the chamber)
• Volumetric throughput varies with discharge opening (a larger OSS results in a larger volume of material flowing through the crushing chamber)
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Primary Gyratory Crusher Application Information needed to properly select a gyratory crusher for a specific application
• Feed gradation - Topsize determines size of feed opening required - Feed topsize should be maximum of approximately 80% of feed -
opening F80 is a feed parameter that determines the “fines correction factor” Percentage of material in feed less than 1/2 the CSS is a feed parameter that determines the “fines correction factor”
• Bulk Density - TPH throughput is directly proportional to bulk density
• Work Index - Power draw directly proportional to work index and this could dictate 30
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machine selection if Work Index is high High Work Index materials may require special chamber design to limit power draw
INTERNAL
Primary Gyratory Power Calculation • Standard Bond Power Calculation used for Gyratory Crusher 1 1 W 10 WI P80 F 80 Where: W = Specific Energy Consumption (kW-hr/MT) WI = Metric Bond Work Index (kW-hr/MT) P80 = Square opening through which 80% of the product will pass (microns) F80 = Square opening through which 80% of the feed will pass (microns)
Re quired kW W VC 0.75 Where: W = Specific Energy Consumption VC = Volumetric Capacity of Crushing Chamber 0.75 = Correction Factor Used for Primary Crushing 31
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Date Author Title
INTERNAL
Primary Gryatory (Volumetric Capacities) SUPERIOR MK-II PRIMARY GYRATORY CRUSHER VOLUMETRIC CAPACITIES (MTPH) OPEN SIDE SETTING (mm) MACHINE
140
150
165
175
42-65
1110
1254
1315
1467
50-65
1238
1342
1520
1568
54-75
1501
1669
62-75
1499
60-89 60-110E
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Date Author Title
190
200
215
230
1720
1786
1831
1864
1953
2136
2186
2421
2560
2807
2869
2941
3035
3157
3876
4011
4062
4300
240
255
4458
4500
INTERNAL
Primary Gyratory Power Example • PG 54-75 with a 150mm OSS • Work Index = 22.5 kW-hr/mt • F80 = 500mm = 500000 microns • P80 = 133 mm =133000 microns
1 1 W 10 WI P80 F 80
Re quired kW W VC 0.75
1 1 0 .3kW hr tonne 10 22.5 133000 500000
338kW 0.3kW hr tonne 1501MTPH 0.75
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INTERNAL
Primary Gyratory Additional Variables • Moisture / Clay content - Effect of moisture is usually minimal up to 5-8%. - Clay in conjunction with moisture can affect the crusher throughput • Desired Product Size - Determines the required operating OSS and therefore affects the size of the crusher selected.
• Desired Capacity -
In conjunction with product size will determine the crusher size and throw required
• Abrasion Index -
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Will not directly affect crusher size selection but may affect wear life of liners Will also affect the material selection of concaves. (Manganese vs. Alloy)
Date Author Title
INTERNAL
Primary Gyratory • Rule of Thumb:
Depending on the material, a gyratory will produce about 85% passing the OSS.
• Rule of Thumb:
With a project lifetime of 10+ years and an instantaneous design tonnage of greater than 1200 mtph a primary gyratory is generally more.
• Rule of Thumb:
Generally, the topsize of the product out of a Primary Gyratory is twice the OSS.
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Date Author Title
INTERNAL
Primary Gyratory Settings and Capacities Open Side Settings of Discharge Opening - Millimeters Feed Max Max kW Opening 125mm 140mm 150mm 165mm 175mm 190mm 200mm 215mm 230mm 240mm 250mm Stone mm (HP) mm (in.)
Size 42-65
1065
852
375
50-65
1270
1016
54-75
1370
62-75
2010
2335
2515
2870
375
2395
2780
2935
1096
450
2885
2985
3145
3335
3485
1575
1260
450
2890
3615
3815
4205
4330
60-89
1525
1220
600
4195
4540
5080
5295
5530
5805
60-110
1525
1220
1000
4730
5935
6270
6470
7075
7345
7595
60-110E
1525
1220
1200
5535
6945
7335
7570
8280
8595
8890
The above capacities are based on an assumed feed where 100% of the feed passes 80% of the feed opening, 80% of the feed passes 60% of the feed topsize, and 50% of the feed passes a sieve size that is 10% of the feed topsize. Capacities are for feed materials with a bulk density of 1.6 metric tons per cubic meter. All capacities are calculated at maximum throw. Material characteristics, feed size distribution, work index, percent moisture, and feed method are all factors when considering total crusher capacity. 36
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INTERNAL
Primary Gyratory Crusher Sizing Example • Information from Customer -
3680 MTPH Nominal into Primary Station
Top Size: 1150mm Fine Gradation Method of Feeding: Truck Dump Very Abrasive P100 = 360 mm 3% moisture WI: 15 kW-hr/metric tonne Bulk Density = 1.7 mt/ m3
• WHAT SIZE PG CRUSHER TO APPLY? • WHAT SETTING IS THE PG SET AT? • WHAT IS THE REDUCTION RATIO?
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INTERNAL
Secondary Mining Crusher
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Date Author Title
INTERNAL
Secondary Required Sizing Information • Feed Gradation - Material Top Size along with Feed Gradation • Material Information - Type of Material - Bulk Density or Specific Gravity - Abrasion Index - Work Index - Moisture Content Percentage - Clay Content Percentage • Tonnage - Instantaneous vs. Average - Design vs. Nominal • Product Requirements - P80 - maximum topsize 39
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INTERNAL
Feed Gradation • What is the maximum average feed size of the material that is supposed to be crushed? - c x b x a. Middle dimension is the size used to size crushers.
-
Generally if a rock is classified as a 25mm rock the dimensions are: 40mm x 25mm x 15mm
• The maximum average feed size sets limits to the cone crushers that can be used.
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INTERNAL
Material Information • What are the material characteristics, crushability, abrasiveness, density.
• Red Book correction figures needs to be used if the material characteristics differ from the material used in the calculations. - Clean, medium hard granite, bulk density 1.6 t/m^3
• Material Tests can be performed to define Work Index, Abrasion Index, Bulk Density, or crushability.
• These material characteristics set limits to the settings that can be used.
• The material characteristics, especially feed gradation, have a significant effect on capacity and product gradation
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INTERNAL
Product Requirements • What is the desired product size and capacity? • The closed side setting is determined by the product size. -
Rule of Thumb: For cones the topsize of the product is approximately twice the CSS.
• The product size percentages with a certain CSS can be estimated from your Bruno software or product gradation table
• Many times the crusher and crusher’s setting are based off the product being sent “As Feed” to the next stage of crushing or grinding.
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Secondary HPX00’s Settings
Note: The minimum setting is that at which the crusher will operate without causing ring bounce. Depending on the crusher characteristics of the rock, this can change.
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INTERNAL
INTERNAL
Secondary HPX00 Capacities
Represents capacity through crusher based on instantaneous product sample
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INTERNAL
Secondary HPX Settings and Capacities
NOTE: Closed Side Feed Opening = Maximum stone size into crusher.
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INTERNAL
GP500S
GP300S
GP200S
GP100S
Secondary GPX00S Settings and Capacities
Capacity and minimum setting figures are indicative for materials with bulk density of 1.6t/m3. Actual results will vary depending on feed grading, rock type, moisture, etc. 46
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Date Author Title
Secondary GP’s Nominal Feed Opening
Cavities: M = medium, C = Coarse, EC = Extra Course
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INTERNAL
MP’s Settings and Feed Size Restrictions
INTERNAL
Notes:
• • 48
Maximum Stone the crusher is able to accept = 80% of Maximum Feed Opening (B) MP1250 has same Settings and Feed Restrictions as the MP1000 in Standard Configuration. © Metso
Date Author Title
INTERNAL
MP Gradation and Capacity Charts
The capacity figures above apply to material with a bulk density of 1.6 mt/m3. Factors that will detract from capacity are: Sticky Material, Excessive Fines, Excessive Moisture, Feed Segregation, Improper Feed Distribution, Lack of Feed Control, Insufficient Crusher Discharge Area, Extremely High Crushing Work Index.
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INTERNAL
MP1250 Gradation and Capacities Charts
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INTERNAL
Secondary Cone Crushers - MP / HP • Rule of Thumb: Approximately 65% - 80% of the material coming out of an MP or HP Series Standard Cavity will be passing its CSS dimensions - Note: As long as the Cone Crusher is Choke Fed.
• Reduction Ratio:
In a secondary application or in a Standard Crusher configuration the maximum Ratio of Reduction should not exceed 6:1 to 8:1.
• Normally this Secondary Crusher produces products larger than 1” and prepared material for the next stage of crushing.
• For HP4 and HP5 there is no Standard and Shorthead Differentiation. - Closed Side Feed Opening = Maximum stone size into crusher.
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INTERNAL
Secondary Cone Crusher Sizing Example • Design Parameters -
Design Capacity: 2200 MTPH Feedsize:
• F100 = 300 mm, F80 = 185 mm
-
A Bulk Density of 1.70 t/m3 Assumed Crushing Work Index of 19.0 kW-hr/mt Moisture = 3%
Product:
• P100 = 135 mm • P80 = 75 mm
• What is the Size of the Secondary Crusher? • What is the Setting the Crusher is Operating? • What is the Reduction Ratio? • What Liner Configuration is in this Crusher? 52
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INTERNAL
Tertiary Mining Crusher
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INTERNAL
Tertiary Required Sizing Information • Feed Gradation - Material Top Size along with Feed Gradation • Material Information - Type of Material - Bulk Density or Specific Gravity - Abrasion Index - Work Index - Moisture Content Percentage - Clay Content Percentage • Tonnage - Instantaneous vs. Average - Design vs. Nominal Note: Same as Secondary • Product Requirements - P80 - maximum topsize 54
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Tertiary HPX00’s Settings
Note: The minimum setting is that at which the crusher will operate without causing ring bounce. Depending on the crusher characteristics of the rock, this can change.
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INTERNAL
INTERNAL
Tertiary HPX00 Capacities
Represents capacity through crusher based on instantaneous product sample
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INTERNAL
Tertiary HPX Settings and Capacities
NOTE: Closed Side Feed Opening = Maximum stone size into crusher.
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INTERNAL
MPX00 Settings and Feed Size Restrictions
Notes:
• •
Maximum Stone the crusher is able to accept = The Closed Feed Opening (A) MP1250 has same Settings and Feed Restrictions as the MP1000 in Shorthead Configuration.
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INTERNAL
MP Gradation and Capacity Charts
The capacity figures above apply to material with a bulk density of 1.6 mt/m3. Factors that will detract from capacity are: Sticky Material, Excessive Fines, Excessive Moisture, Feed Segregation, Improper Feed Distribution, Lack of Feed Control, Insufficient Crusher Discharge Area, Extremely High Crushing Work Index.
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INTERNAL
MP1250 Gradation and Capacities Charts
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Tertiary Cone Crushers • Rule of Thumb: Approximately 75% - 85% of the material coming out of an MP or HP Series Short Head Cavity will be passing its CSS dimensions - Note: As long as the Cone Crusher is Choke Fed.
• Reduction Ratio:
In a tertiary application or in a Shorthead Crusher configuration the maximum Ratio of Reduction should not exceed 4:1 to 6:1
• Normally this Tertiary Cone Crusher produces products smaller than 1” and generally produces the desired end product.
• For HP4 and HP5 there is no Standard and Shorthead Differentiation. - Closed Side Feed Opening = Maximum stone size into crusher.
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INTERNAL
Tertiary Cone Crusher Sizing Example • Design Parameters -
Design Capacity: 400 MTPH Feedsize: Copper Ore
• F100 = 102 mm, F80 = 39 mm
-
A Specific Gravity of 2.70 t/m3 Assumed Crushing Work Index of 14.5 kW-hr/mt Moisture = 3%
Product:
• P100 = 28 mm • P80 = 14 mm
• What is the Size of the Shorthead Crusher? • Determine the operating CSS? • What is the Reduction Ratio? • What Liner Configuration is in this Crusher? 62
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INTERNAL
Applications Group Sizing Techniques • Bruno for initial Design requirements and general outputs • Gyratory Sizing Spreadsheet • Empirical Crusher Database for Confirmation
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INTERNAL
Bruno • Crushers based off of crushing models developed. • Screen models based off of basic VSMA (Vibrating Screen Mechanism) calculations
• Flow sheet is all calculated off of mass flow balance • Standard Inputs - Feed Gradation - Material Properties • Standard Outputs - Equipment Loads - Product Gradations - Mass Flow Rates
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INTERNAL
Bruno Updates • Gyratory 110E is now in Bruno and we’re continually updating Bruno to accurately forecast its capacities and gradations
• MP1250 will be in the next update of Bruno. • We are continually updating Bruno to accurately forecast the MP product lines capacities and capabilities.
• Mining Screen calculations are currently being updated to more accurately represent VSMA calculations (MF, RF, LH)
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INTERNAL
Gyratory Sizing Spreadsheet
Consists of a number of dropdown menus and numerical inputs. Actual Inputs into Spreadsheet are: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
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Superior Crusher Type Throw Setting Material Type % Passing ½ of CSS F80 Moisture Content Bond Crushing WI Bulk Density Abrasion Index
Gyratory Spreadsheet – Customer Page
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INTERNAL
INTERNAL
Empirical Database • Looks up empirical values by applying filters to distinct sets of criteria. (Access Based Application) - Primary, Secondary, Tertiary - Crusher Type (i.e. MP, HP, Gyratory) - Crusher Size (i.e. MP800 vs. MP1000) - Settings • CSS or OSS • Throw
-
Capacities Material Characteristics
• Material Type • Moisture Content • IC Work Index • Cavity Level: (Choked, Low, Full, Medium) • Bulk Density or Specific Gravity • Feed Gradation and Product Gradation 68
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INTERNAL
Empirical Database - Cont • Every Line item has an Application Data Sheet that the Database was developed from. These sheets are linked to each Application.
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Empirical Database – Cont
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Questions? Comments? Thank You!
