### Characteristics of Mae Moh lignite Hardgrove grindability

2015 2 6 For the simplified Bond method an approximate work index may be determined by running a batch dry grinding test. The test was performed using a 25 cm diameter tumbling ball mill with material hold up of about 10 media loading of about 25 and a unit interstitial filling. Two kilograms of the 5 mm lignite samples were ball milled for 10

Chat Online### Characteristics of Mae Moh lignite Hardgrove grindability

2015 2 6 For the simplified Bond method an approximate work index may be determined by running a batch dry grinding test. The test was performed using a 25 cm diameter tumbling ball mill with material hold up of about 10 media loading of about 25 and a unit interstitial filling. Two kilograms of the 5 mm lignite samples were ball milled for 10

Chat Online### Simon Noon HIGHLIGHTSASX

2020 4 29 Drop Weight index kWh/m3 5.3 A x b 51.6 Rod mill work index kWh/t 15.5 Ball mill work index kWh/t 10.2 Abrasion index 0.025 Heavy Liquid Separation HLS beneficiation testwork was carried out on six fresh primary ore composites with head grades ranging from 1.0 to 5.4 Pb to confirm amenability to beneficiation.

Chat Online### Characteristics of Mae Moh lignite Hardgrove grindability

2015 2 6 For the simplified Bond method an approximate work index may be determined by running a batch dry grinding test. The test was performed using a 25 cm diameter tumbling ball mill with material hold up of about 10 media loading of about 25 and a unit interstitial filling. Two kilograms of the 5 mm lignite samples were ball milled for 10

Chat Online### HARDNESS MODEL AND RECONCILIATION OF

work index and the SAG power index. These parameters and plant operational specifications have been used as input information to forecast the expected throughput and ball mill product size P80 for each block of ore. Two forecasting techniques have been used an in house model strongly dependant of bond work index

Chat Online### Modelling the Specific Grinding Energy and Ball Mill

2004 9 1 INTRODUCTION For the ball mill scale up the Bond work index Wj together with the feed and product size 80 cumulative passing were used for the estimation from Bond s law of the specific grinding energy w. From the specific grinding energy W kWh/short ton and the design tonnage rate capacity T short tonlh the total mill power draw

Chat Online### High pressure grinding rolls HPGR applications in the

2006 2 1 The Bond work index of the HPGR discharge was determined as 9.88 kWh/ton whereas for the ball mill total fresh feed was found to be 16.34 kWh/ton with the added trass. Download Download full size image Fig. 2. The measured and calculated size distributions around the circuit in Case Study 1.

Chat Online### Characteristics of Mae Moh lignite Hardgrove grindability

### Major Mines Projects Kemess East Project

The cyclone underflow is directed to a ball mill 22 ft diameter by 36 ft 6 inches long 12 000 hp for grinding operating in closed circuit with the cyclones. The ball mill work index for the KE deposit is similar to that used for the design of KUG. The cyclone overflow represents the final product size at 150 microns K80 to rougher flotation.

Chat Online### WORLD STEEL IN FIGURES 2019

2019 6 6 Notes on company ownership and tonnage calculations For worldsteel members the data was sourced from their official tonnage declarations. For Chinese companies the official CISA tonnage publication was used unless otherwise noted. In case of more than 50 ownership 100 of the subsidiary s tonnage is included.

Chat Online### HARDNESS MODEL AND RECONCILIATION OF

work index and the SAG power index. These parameters and plant operational specifications have been used as input information to forecast the expected throughput and ball mill product size P80 for each block of ore. Two forecasting techniques have been used an in house model strongly dependant of bond work index

Chat Online### PDC Mass BalanceFlotation CIL Rev A 2012 June 20

2013 8 2 Mill Size Dia mm x EGL mm 7 600 x 11 960 TBC by Suppliers Drive kW 14 000 TBC by Suppliers Bond Work IndexBall Mill Design kWh/t 16.0 Testwork/Engineering Design Average Tonnage Rate Each t/h 1441 Calculations max. tonnage rate mtph 1729 CAL/ENGINEERING DESIGN Solids/Pulp Density 72 Engineering Design Feed Size F80 µm 2 000

Chat Online### WORLD STEEL IN FIGURES 2019

2019 6 6 Notes on company ownership and tonnage calculations For worldsteel members the data was sourced from their official tonnage declarations. For Chinese companies the official CISA tonnage publication was used unless otherwise noted. In case of more than 50 ownership 100 of the subsidiary s tonnage is included.

Chat Online### Major Mines Projects Kemess East Project

The cyclone underflow is directed to a ball mill 22 ft diameter by 36 ft 6 inches long 12 000 hp for grinding operating in closed circuit with the cyclones. The ball mill work index for the KE deposit is similar to that used for the design of KUG. The cyclone overflow represents the final product size at 150 microns K80 to rougher flotation.

Chat Online### Mineral ProcessingCrushingPlant design construction

2014 2 26 GRINDABILITY TESTS Bond Rod mill work Index • The rod mill work Index is also normally distributed with and average and median of 14.8kWh/t • It is common to observe difference between the ball and rod mill caused by variation in ore hardness • The test has been mainly used for the design of rod mill or primary ball mills. http

Chat Online### High pressure grinding rolls HPGR applications in the

2006 2 1 The Bond work index of the HPGR discharge was determined as 9.88 kWh/ton whereas for the ball mill total fresh feed was found to be 16.34 kWh/ton with the added trass. Download Download full size image Fig. 2. The measured and calculated size distributions around the circuit in Case Study 1.

Chat Online### Deep Drawing Force Calculator

Deep Drawing Force Calculator. Calculate the required force to deep draw a piece of sheet metal based on the drawing ratio sheet thickness and the ultimate tensile strength of the material. The drawing ratio is a measure of the severity of the drawing operation and

Chat Online### PDC Mass BalanceFlotation CIL Rev A 2012 June 20

2013 8 2 Mill Size Dia mm x EGL mm 7 600 x 11 960 TBC by Suppliers Drive kW 14 000 TBC by Suppliers Bond Work IndexBall Mill Design kWh/t 16.0 Testwork/Engineering Design Average Tonnage Rate Each t/h 1441 Calculations max. tonnage rate mtph 1729 CAL/ENGINEERING DESIGN Solids/Pulp Density 72 Engineering Design Feed Size F80 µm 2 000

Chat Online### Mineral ProcessingCrushingPlant design construction

2014 2 26 GRINDABILITY TESTS Bond Rod mill work Index • The rod mill work Index is also normally distributed with and average and median of 14.8kWh/t • It is common to observe difference between the ball and rod mill caused by variation in ore hardness • The test has been mainly used for the design of rod mill or primary ball mills. http

Chat Online### AbstractUSGS

In instances where this is not feasible the following rough guidelines may be followed for a 5 yr mine life17 acres per 1 000 st/d mill capacity for a 10 yr mine life32 acres per 1 000 st/d mill capacity and for a 20 yr mine life 62 acres per 1 000 st/d capacity adapted from 32 .

Chat Online### how can i calculate capacity of a wet ball mill

how can i calculate capacity of a wet ball mill. In grinding selecting calculate the correct or optimum ball size that allows for the best and optimumideal or target grind size to be achieved by your ball mill is an important thing for a mineral processing engineer aka metallurgist to do often the ball used in ball mills is oversize just in case well this safety factor can cost you much in

Chat Online### Orway Mineral Consultants Canada Ltd. Mississauga ON

2014 10 1 The Bond equation is used to calculate ball mill specific energy from T 80 to the final product P 80 size. The total circuit specific energy is the sum of the SAG mill and ball mill specific energies. W SAG = R. Ms 16000 / Ms.447.3 4 W T = K a.K b.W SAG. 10.BWi. T 80 0.5 1700 0.5 .EF5 W BM.K BM 5 Where W SAG = SAG mill specific energy from F

Chat Online### Simon Noon HIGHLIGHTSASX

2020 4 29 Drop Weight index kWh/m3 5.3 A x b 51.6 Rod mill work index kWh/t 15.5 Ball mill work index kWh/t 10.2 Abrasion index 0.025 Heavy Liquid Separation HLS beneficiation testwork was carried out on six fresh primary ore composites with head grades ranging from 1.0 to 5.4 Pb to confirm amenability to beneficiation.

Chat Online### How to Calculate Vessel Capacitybulk online

2014 2 10 hmmm so it means say the stowage factor is 0.40 cubic mtr per tonne stow factor being the volume of space per ton and the Net tonnage is 48 018. hence dividing the net tonnage by 0.40 we get 120045 tons which is the cargo carrying capacity of this capesize bulk carrier jee tht was easy thnks.

Chat Online### Bowdens Silver ProjectSilver Mines Ltd

2021 3 31 Crusher work index was in a fairly tight range from approximately 8 kWh/t to around 12 kWh/t whilst Bond Ball Mill Work index varied from a low of 10.6 kWh/t to a high of 24.1 kWh/t. SMC testwork used to determine the suitability of a SAG Mill resulted in A x b values ranging from 32 to 96.9 which indicate the material is suitable for use

Chat Online### CREATIVE AND SIMPLER HPGR CIRCUITS MAY INCREASE

2018 2 20 Boddington has a design capacity of 35Mtpa approximately 96 000 t/d and processes two very hard gold ores with average Bond ball mill work indices BWi of 15.1 and 16.6 kWh/t Bond rod mill work indices RWi of 22.8 and 24.2 kWh/t and JK Axb values of 27.9 and 25.5.

Chat Online### Magnetic Separation Techniques to Improve Grinding

2017 11 21 However the total mill power consumption dropped 8 from an average of 7600 kW to 7000 kW. The mill work index dropped 10 percent from an average of 5.5 kW hr/T to 5.0 kW hr/T. Conclusions This represents a current view of the effects of grinding ball fragments in the milling circuit and the impact on the crushing and grinding circuit.

Chat Online### Major Mines Projects Kemess East Project

The cyclone underflow is directed to a ball mill 22 ft diameter by 36 ft 6 inches long 12 000 hp for grinding operating in closed circuit with the cyclones. The ball mill work index for the KE deposit is similar to that used for the design of KUG. The cyclone overflow represents the final product size at 150 microns K80 to rougher flotation.

Chat Online### SHEDDING LIGHT ON SECONDARY CRUSHING B. Putland

2014 10 1 initial circuit design. The Bond Crusher Work Index CWI and the Bond Ball Mill Work Index BWI weredetermined to be 19.5 kWh/t and 16.8 kWh/t respectively. The objective of the study was to increase grinding circuit tonnage and maintain the final product target at 80 passing 106 µm.

Chat Online### Magnetic Separation Techniques to Improve Grinding

2017 11 21 However the total mill power consumption dropped 8 from an average of 7600 kW to 7000 kW. The mill work index dropped 10 percent from an average of 5.5 kW hr/T to 5.0 kW hr/T. Conclusions This represents a current view of the effects of grinding ball fragments in the milling circuit and the impact on the crushing and grinding circuit.

Chat Online### Metallurgical Test Work Undertaken at B2Gold s Mines

2019 4 1 La India Vein Set ores were noted as harder than usual with the Bond Ball mill work index determinations ranging from 17.5 to 21.9kWh/t. Grind recovery test work indicated that a grind of 80 passing P80 75 microns will be required.

Chat Online### SHEDDING LIGHT ON SECONDARY CRUSHING B. Putland

2014 10 1 initial circuit design. The Bond Crusher Work Index CWI and the Bond Ball Mill Work Index BWI weredetermined to be 19.5 kWh/t and 16.8 kWh/t respectively. The objective of the study was to increase grinding circuit tonnage and maintain the final product target at 80 passing 106 µm.

Chat Online### Magnetic Separation Techniques to Improve Grinding

2017 11 21 However the total mill power consumption dropped 8 from an average of 7600 kW to 7000 kW. The mill work index dropped 10 percent from an average of 5.5 kW hr/T to 5.0 kW hr/T. Conclusions This represents a current view of the effects of grinding ball fragments in the milling circuit and the impact on the crushing and grinding circuit.

Chat Online### Bowdens Silver ProjectSilver Mines Ltd

2021 3 31 Crusher work index was in a fairly tight range from approximately 8 kWh/t to around 12 kWh/t whilst Bond Ball Mill Work index varied from a low of 10.6 kWh/t to a high of 24.1 kWh/t. SMC testwork used to determine the suitability of a SAG Mill resulted in A x b values ranging from 32 to 96.9 which indicate the material is suitable for use

Chat Online### PDC Mass BalanceFlotation CIL Rev A 2012 June 20

2013 8 2 Mill Size Dia mm x EGL mm 7 600 x 11 960 TBC by Suppliers Drive kW 14 000 TBC by Suppliers Bond Work IndexBall Mill Design kWh/t 16.0 Testwork/Engineering Design Average Tonnage Rate Each t/h 1441 Calculations max. tonnage rate mtph 1729 CAL/ENGINEERING DESIGN Solids/Pulp Density 72 Engineering Design Feed Size F80 µm 2 000

Chat Online### HARDNESS MODEL AND RECONCILIATION OF

work index and the SAG power index. These parameters and plant operational specifications have been used as input information to forecast the expected throughput and ball mill product size P80 for each block of ore. Two forecasting techniques have been used an in house model strongly dependant of bond work index

Chat Online### The Basics of Thread RollingPMPA

2016 4 14 The Formability Index • The softer the material the easier it is to roll threads o Roll work face needs to be calculated for each part to make sure proper clearances are used. Capacity o Ability to shave large range for a given machine o Optional bracket

Chat Online### CREATIVE AND SIMPLER HPGR CIRCUITS MAY INCREASE

2018 2 20 Boddington has a design capacity of 35Mtpa approximately 96 000 t/d and processes two very hard gold ores with average Bond ball mill work indices BWi of 15.1 and 16.6 kWh/t Bond rod mill work indices RWi of 22.8 and 24.2 kWh/t and JK Axb values of 27.9 and 25.5. The circuit is comprised

Chat Online### Bowdens Silver ProjectSilver Mines Ltd

2021 3 31 Crusher work index was in a fairly tight range from approximately 8 kWh/t to around 12 kWh/t whilst Bond Ball Mill Work index varied from a low of 10.6 kWh/t to a high of 24.1 kWh/t. SMC testwork used to determine the suitability of a SAG Mill resulted in A x b values ranging from 32 to 96.9 which indicate the material is suitable for use

Chat Online### CORE

Knowing the Hardgrove indices the Bond work indices of some samples wereestimated using the Aplan s formula. The approximate work indices were determined by running a batch dry grinding testusing a laboratory ball mill. Finally the work indices obtained from both methods were compared.

Chat Online### How to Calculate Vessel Capacitybulk online

2014 2 10 hmmm so it means say the stowage factor is 0.40 cubic mtr per tonne stow factor being the volume of space per ton and the Net tonnage is 48 018. hence dividing the net tonnage by 0.40 we get 120045 tons which is the cargo carrying capacity of this capesize bulk carrier jee tht was easy thnks.

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