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[email protected]Oct 20, 2015 A linkedin.com group was recently discussing this by asking: I’ve tried to estimate AG/SAG Mill power requirements using several different methods: (1) Using the results of SMC data. (2) Using SAG Power Index (SPI) data. (3) Using the 1989 Barratt method updated on Alex Doll’s Web site (February 16, 2015)
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 work well only under certain boundary conditions
Get PriceApr 17, 2018 Power drawn at the pinion is 448 kW, 13.617 kWh/tonne (SAG mill) and 570 kW, 17.325 kWh/tonne (ball mill) when processing 32.9 mtph, for a total of 30.942 kWh/tonne or 14.6% above the conventional estimate
Get PriceJun 06, 2016 Traditionally, many engineers approached SAG circuit design as a division of the total power between the SAG circuit and ball-mill circuit, often at an arbitrary power split. If done without due consideration to ore characteristics, benchmarks against comparable operating circuits, and other aspects of detailed design (including steady-state
Get Pricepredicted. Slurry pooling causes the power draw in AG and SAG mills to be lower than a mill without a slurry pool. This phenomenon results in overflow mills usually drawing less power than grate discharge mills that are operating without a slurry pool. This is because by definition overflow mills operate all of the time with a slurry pool
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 PriceMar 09, 2018 In terms of monitoring power, one has to ensure that true SAG mill power is being recorded. For example with a variable speed DC drive, the AC power measured on the primary side of the rectifier transformer is the total power consumed by the silpac unit and DC drive as well as the power factor correction capacitors and reactors
Get PriceAn updated data set for sag mill power model calibration This paper expands the SAG mill survey database published by the Author at Procemin 2013. The new database includes 49 published SAG/AG mill surveys and includes mills from all over the world
Get PriceNov 26, 2019 The biggest characteristic of the sag mill is that the crushing ratio is large. The particle size of the materials to be ground is 300 ~ 400mm, sometimes even larger, and the minimum particle size of the materials to be discharged can reach 0.1 mm. The calculation shows that the crushing ratio can reach 3000 ~ 4000, while the ball mill’s
Get PriceSAG Mill Power. SAG milling can be optimised to achieve maximum breakage and throughput (or any other number of objectives). The relationships between the key variables are highly non-linear and shift as the ore hardness, steel load and liner conditions change
Get PriceDec 12, 2016 If P is less than 80% passing 70 microns, power consumption will be. Ball Mill Power Calculation Example. A wet grinding ball mill in closed circuit is to
Get PriceMar 10, 2017 I suppose its best to start at the beginning and talk about the basics of controlling a SAG mill. We have all become accustomed to using bearing pressure and power to control a SAG mill
Get PriceMMS Espanol. Enviado por. chinorou. Ecuaciones MillPower SAG Mills - SAG Mill Power Estimation - Hogg & Fuerstenau Model. Enviado por. Patricio Ricardo Castillo Apala. Proyecto Planta Concentradora Parte 5. Enviado por. d borah_rosales. Mais de XOCHILT PULIDO y ARABIA ZECUA
Get PriceThe optimizing level maximizes Power Draw using an online gradient estimation of the non-lineal function between Power Draw and mill Hold Up. The results show that is possible to operate the SAG Mill in the optimal zone, compensate unmeasurable disturbances and maximize throughput without violating operational constraints
Get PriceGeometallurgy relates to the practice of combining geology or geostatistics with metallurgy, or, more specifically, extractive metallurgy, to create a spatially or geologically based predictive model for mineral processing plants. It is used in the hard rock mining industry for risk management and mitigation during mineral processing plant design. It is also used, to a lesser extent, for
Get PriceDec 09, 2020 SAG Mill power draw models are used in mill design and grinding circuit modelling to predict how much power will be consumed by a particular mill geometry and operating configuration. This paper will compare SAG mill models by Morrell, Loveday (using Power Numbers published by Barratt) and Austin against several published mill surveys
Get PriceDevelopment of a Dynamic Jb / Jc Estimation Model in a Single Stage SAG Mill IMPC 2014 30 de octubre de 2014 This article presents the development of a dynamic tool for the estimation of Jb/Jc rate (ball filling level / total load filling level) of a SAG mil operating
Get PriceMay 15, 2014 SAG mills are primarily used at gold, copper and platinum mines with applications also in the lead, zinc, silver, alumina and nickel industries. The largest SAG mill is 42' in diameter, powered by a 28 MW (38,000 HP) motor AUTOGENOUS GRINDING MILL SAG . They are so-called due to the self-grinding of the ore
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Get PriceLifting and installing of the NEW SAG mill with the 180 toner and other works on the Mill examining object to be moved, estimate their size shape and weight and decide on the equipment necessary to moved them communication by way of signal and verbal direction to ensure safety of workers and material… Determine Load specifications
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