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the mill power and the efﬁciency of the mill operation (Van Nierop and Moys, 2001). If a SAG mill has been designed with a conventional power or speciﬁc energy model which do not con-sider the projected feed size distribution it is likely that this mill will reach the expected power
Get PriceWAG/SAG, WBM are the respective power draw of AG/SAG and ball mills. Note that the ball mill operating work index is applied only on the portion that needs the additional grinding (Q2), which renders to the AG/SAG mill the credit for the fraction of the material that had been already ground to final product (Q1).
Get PriceJun 19, 2015· The ball mill motor power requirement calculated above as 1400 HP is the power that must be applied at the mill drive in order to grind the tonnage of feed from one size distribution. The following shows how the size or select the matching mill required to draw this power is calculated from known tables 'the old fashion way'.
Get Pricethe mill power and the efﬁciency of the mill operation (Van Nierop and Moys, 2001). If a SAG mill has been designed with a conventional power or speciﬁc energy model which do not con-sider the projected feed size distribution it is likely that this mill will reach the expected power
Get Priceof the energy required by a SAG mill. Put another way, the SAG mill energy required according to this statement, is 2.5 times more than the Ab value to produce the same degree of particle breakage. There is a speci ﬁ c gravity factor that affects AG/SAG power draw. The lighter material, in
Get Pricewhere two SAG mill power models are developed. The first model calculates the mill power draw by combining several individual data-driven algorithms. The second model uses historical data to forecast the mill power draw in advance. These data-driven methods can make high
Get PriceJun 06, 2016· SAG mills have a higher installed power density for a given plant footprint relative to AC mills. With the combination of finer grind and a lower installed power density (based on the lower density of the mill charge), a typical AG mill has a lower throughput, a lower power draw
Get PriceSAG Power Draw, kW Date SAG Power Draw - kW (Daily) Installed Power = 12,690 kW (17,000 hp) Figure 10 - Ball Mill power draw . Plant throughput rates were not much improved into 2012, so it was decided to collect a larger number of
Get PriceJan 01, 2016· AG/SAG Mill Power. In designing crushing–grinding flow sheets, correct estimations of mill power draw are important as it serves as one of the deciding factors for selecting an option between AG/SAG mills. In most cases, the circuit with the least or optimal power consumption is
Get PricePrediction of correct sag mill power consumption with a change in ore hardness, solid percent (density) to the sag feed, rpm of sag and PSD has always been very tricky. So far, I have used Austin-Morrell model and Hogg- Fuerstenau power model, but these models seem to
Get PriceUnderground mines are an example: the hoisting capacity of the mine shaft is the rate-limiting step in the process, and the SAG mill must adapt to what the shaft can supply. So yes, there are situations where constant tonnage is appropriate; but most SAG mill operators should target constant power draw.
Get PriceSAG mill power draw: 19875 kW. Ball mill power draw: 17980 kW. Pebble crusher power draw: 650 kW. Pebble crusher no-load power: 120 kW. Checks were made to ensure that the throughput data were in terms of dry tonnes/hr. Dry tonne/hr are obtained from raw weightometer readings less a moisture content allowance. Power draw data were also checked
Get PricePower draw of wet tumbling mills and its realtionship to charge dynamics Part 2 an empirical approach to modelling of mill power draw. Tran Inst. Min. Met Vol 105: C54-62. 20. MORRELL, S. (1996). Power draw of wet tumbling mills and its relationship to charge dynamics. Part 1 a continuum approach to mathematical modelling of mill power draw.
Get PricePower draw of wet tumbling mills and its realtionship to charge dynamics Part 2 an empirical approach to modelling of mill power draw. Tran Inst. Min. Met Vol 105: C54-62. 20. MORRELL, S. (1996). Power draw of wet tumbling mills and its relationship to charge dynamics. Part 1 a continuum approach to mathematical modelling of mill power draw.
Get PriceAG/SAG/Ball Mill Sizing. Gross Power Draw and Specific Energy Calculator for Autogenous Grinding (AG), Semi-Autogenous Grinding (SAG) and Ball Mills. Exit Mill Calculator.
Get Pricebetween the AG/SAG mill and the ball/rod mill, power draw of the latter being relatively stable. In response to the variation in feed size and hardness, the mill feed rate has to be changed significantly [7]. The comminution processes such as crushing, grinding, screening and classification are commonly
Get PriceBenchmarking: Ball Mill Power Draw - Fimiston. Nelson, M; Valery, W; Morrell, S, Performance Characteristics and Optimisation of the Fimiston (KCGM) SAG Mill Circuit, Page 233 - 248, SAG 1996 Conference, Vancouver, Canada. model predicts 7% low with no density correction and 0.8% high with density correction.
Get PricePower Draw Of Wet Tumbling Mills And Its Relationship To Charge Dynamics - Part 1 A Continuum Approach To Mathematical Modelling Of Mill Power Draw Power Modelling Of Stirred Mills Predicting The Overall Specifcie Energy Requirements Of AG SAG Ball Mill And HPGR Circuits On The Basis Of Small Scale Laboratory Ore Characterisation Tests
Get PriceThe survey data collection included the power draw of the single-stage SAG mill, the fresh feed rate, particle size distributions for circuit feed and product, and the pebble rejection rate (pebbles are discarded from the SAG circuit and treated elsewhere). Grindability testing for SGI and/or a
Get PricePower-based Comminution Calculations Using Ausgrind. the sag and ball mills power draw is calculated using semi-empirical equations, as a function of mill geometry, speed and load. • the sag power index (spi) test was developed by starkey and,power-based modelling of single-stage ag and sag mill circuits,the sgi equation uses a transfer size between a sag and ball mill; it is proposed that a
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