#### Modelling SAG Milling Power and Specific Energy Consumption

Especiﬁc energy modelling SAG mills operation data abstract Comminution, particularly milling, is on average the largest consumer of energy in mining. Actual com-minution circuits consist in most of the cases in coarse crushing, SAG milling, pebble crushing and sec-ondary ball milling. In these circuits the SAG mill is the largest energy

#### (PDF) Predicting the specific energy required for size

The SMC and Bond ball work index experiments as well as the Morrell model indicated that the order of the specific energy consumption of comminution was “Jaw crusher + HPGR mill + ball mill

#### ball mill capacity energy consumption

2021-8-2 A feature of ball mills is their high specific energy consumption; a mill filled with balls, working idle, consumes approximately as much energy as at full-scale capacity, i.e. during grinding of material. Therefore, it is most disadvantageous to use a ball mill at less than full capacity.

#### Comparing ball and vertical mills performance: An

seen, the vertical mill consistently presented lower net specific energy consumption than the ball mills which operate on the same circuit. The averages were 11.3, 11.7 and 6.5 kWh/t respectively for ball mill 01, ball mill 02 and vertical mill. Figure 5 Net specific energy consumption of regrinding circuit.

#### COMMINUTION CIRCUITS A SUMMARY OF ENERGY

applied. The calculations, presented in Table 1, showed that the expected specific energy consumption for the circuit was 13.5 kWh/t, based on the measured ore hardness, feed size, and product size. A specific energy consumption of 14.9 kWh/t was measured for crushing and grinding equipment while accounting for drivetrain

#### Comminution processes: Basics and application to energy

1. Specific energy of mill compared to new created surface energy → not meaningful, efficiency much smaller that 1% 2. Specific energy of mill compared to minimum specific energy requirement in so-called element tests. However, here at least two possibilities exist: a. breakage energy of single particle stressing by compression / by impact

#### Modelling SAG milling power and specific energy

Jan 01, 2015 In Fig. 3, Fig. 4 the data is presented in order to show the effect of the fresh feed size, particularly the % −6″ +1″ (−152 +25 mm), on the SAG mill power consumption (Pc) in kW and on the SAG mill specific energy consumption (Ecs) in kW h/t, obtained by dividing the power consumed (kW) by the fresh feed rate (t/h).

#### Cement Sector Bureau of Energy Efficiency

4.3.4.2 Calculation for Gate to Gate Specific Energy Consumption (SEC) 6 4.4 Methodology (Summary) 7 5. Target Setting in Cement Plants 7 5.1 Grouping of Cement plants 7 5.2 Energy Consumption Range 8 5.3 Example: Normalised Baseline parameters and Target for PPC 8 5.4 Apportionment of Sub-Sector Target of Energy Saving in Cement Sector 9

#### Ball Mill Design/Power Calculation

Jun 19, 2015 The basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be ground, characteristics, Bond Work Index, bulk density, specific density, desired mill tonnage capacity DTPH, operating % solids or pulp density, feed size as F80 and maximum ‘chunk size’, product size as P80 and maximum and finally the type of circuit open/closed

### specific energy consuption for crusher and ball mill pdf

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#### APPENDIX A. USE OF THE Mia, Mib, Mih, Mic IN PREDICTING

crusher would provide this energy. However, in this situation the ball mill has to supply this energy and it has a different (higher) work index than the crusher (ie the ball mill is less energy efficient than a crusher and has to input more energy to do the same amount of size reduction). Hence from equation 7, to crush to the ball mill

#### Modelling SAG Milling Power and Specific Energy Consumption

Especiﬁc energy modelling SAG mills operation data abstract Comminution, particularly milling, is on average the largest consumer of energy in mining. Actual com-minution circuits consist in most of the cases in coarse crushing, SAG milling, pebble crushing and sec-ondary ball milling. In these circuits the SAG mill is the largest energy

#### (PDF) Predicting the specific energy required for size

The SMC and Bond ball work index experiments as well as the Morrell model indicated that the order of the specific energy consumption of comminution was “Jaw crusher + HPGR mill + ball mill

#### ball mill capacity energy consumption

2021-8-2 A feature of ball mills is their high specific energy consumption; a mill filled with balls, working idle, consumes approximately as much energy as at full-scale capacity, i.e. during grinding of material. Therefore, it is most disadvantageous to use a ball mill at less than full capacity.

#### Comparing ball and vertical mills performance: An

seen, the vertical mill consistently presented lower net specific energy consumption than the ball mills which operate on the same circuit. The averages were 11.3, 11.7 and 6.5 kWh/t respectively for ball mill 01, ball mill 02 and vertical mill. Figure 5 Net specific energy consumption of regrinding circuit.

#### COMMINUTION CIRCUITS A SUMMARY OF ENERGY

applied. The calculations, presented in Table 1, showed that the expected specific energy consumption for the circuit was 13.5 kWh/t, based on the measured ore hardness, feed size, and product size. A specific energy consumption of 14.9 kWh/t was measured for crushing and grinding equipment while accounting for drivetrain

#### Comminution processes: Basics and application to energy

1. Specific energy of mill compared to new created surface energy → not meaningful, efficiency much smaller that 1% 2. Specific energy of mill compared to minimum specific energy requirement in so-called element tests. However, here at least two possibilities exist: a. breakage energy of single particle stressing by compression / by impact

#### Modelling SAG milling power and specific energy

Jan 01, 2015 In Fig. 3, Fig. 4 the data is presented in order to show the effect of the fresh feed size, particularly the % −6″ +1″ (−152 +25 mm), on the SAG mill power consumption (Pc) in kW and on the SAG mill specific energy consumption (Ecs) in kW h/t, obtained by dividing the power consumed (kW) by the fresh feed rate (t/h).

#### Cement Sector Bureau of Energy Efficiency

4.3.4.2 Calculation for Gate to Gate Specific Energy Consumption (SEC) 6 4.4 Methodology (Summary) 7 5. Target Setting in Cement Plants 7 5.1 Grouping of Cement plants 7 5.2 Energy Consumption Range 8 5.3 Example: Normalised Baseline parameters and Target for PPC 8 5.4 Apportionment of Sub-Sector Target of Energy Saving in Cement Sector 9

#### Ball Mill Design/Power Calculation

Jun 19, 2015 The basic parameters used in ball mill design (power calculations), rod mill or any tumbling mill sizing are; material to be ground, characteristics, Bond Work Index, bulk density, specific density, desired mill tonnage capacity DTPH, operating % solids or pulp density, feed size as F80 and maximum ‘chunk size’, product size as P80 and maximum and finally the type of circuit open/closed

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APPENDIX A. USE OF THE Mia, Mib, Mih, Mic IN PREDICTING
crusher would provide this energy. However, in this situation the ball mill has