The Bond method for ball mil designing has been used for 60 years. Based on the Work Index test, such method is applied mostly in traditional circuit configuration, which includes multi-staged crushing, followed by rod and ball milling. On the other hand, simu - lation is a widespread and used technique for comminution, classification modeling, and
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Get PriceBall Mill Wio, BWio 8.6 Circuit Wio, OWio 14.6 Bond Ball Mill Work Index, BWi, kWh/t 13.4 Bond Rod Mill Work Index, RWi, kWh/t 18.1 Table 1. Example of AG/SAG Ball Mill Circuit Wio Calculations [1] [2] ABstrAct Optimum use of power in grinding, both in terms of grinding efficiency and use of installed capital, can have a large effect on
Get PriceWm = Wi ( P80 10 - F80 10) (1) where: Wm - is mill specific motor output power (kWh/t), Wi - is the Bond ball mill work index (kWh/t), P80 - is sieve size passing 80% of the mill product (µm), F80 - is sieve size passing 80% of the mill feed (µm), The "efficiency factors" (Rowland, 1975) modify equation 1
Get PriceBond ball mill work index for the ore samples collected from surveys 3 and 4 was 17.2 and 18.7 kWh/t, respectively. Table 6 shows that the overall circuit operation index was close to work
Get PriceLAB/PILOT PLANT EQUIPMENT. Bond Ball Mill. This 12" x 12" ball mill is universally used for grindability testing and determination of the Bond Work Index.
Get Price7. Plot the size distributions in the plant feed, the ball mill feed and the cyclone overflow. View the size distribution graphs for the plant feed, the ball mill feed, the ball mill product and the cyclone overflow make a pattern that gives an immediate diagnosis of the health of the milling circuit. The graphs for this case are shown below.
Get PriceJun 11, 2020· 1 Introduction A Bond Ball Mill Work Index test is a standard test for determining the ball mill work index of a sample of ore. It was developed by Fred Bond in 1952 and modified in 1961 ( JKMRC CO., 2006 ).
Get PriceOn top of this, many companies treat different parts of their mining operations as independent units. It's not uncommon for a large mine to have independent planners looking after blasting, primary crusher throughput, secondary and ball mill grinding as well as the concentration plant.
Get PriceTable 1: Millpebs performance results in industrial fine grinding mills Case No Ore Type Technology Application Bond Ball Size Power Savings Increase TPH Finer Grind 2002 Fe Ball Mill Regrind 26 mm Same Same Yes 2004 Cu-Pb Ball Mill Regrind 5 mm -10% Same +56% -33% Same Yes 1 Cu-Pb-Zn Ball Mill Secondary 8 mm -44% Same Same
Get PriceOleg D. Neikov, in Handbook of Non-Ferrous Metal Powders, 2009. Tumbling Ball Mills. Tumbling ball mills or ball mills are most widely used in both wet and dry systems, in batch and continuous operations, and on a small and large scale.. Grinding elements in ball mills travel at different velocities. Therefore, collision force, direction and kinetic energy between two or more elements vary
Get Priceball mills in producing the final product (particles finer than 74 µm) was 55.38% and 44.62% respectively. That is, the SAG mill produces about 10.76% more than the ball mill in the final product. The average consumed energy at SAG and ball mills to produce one ton of final product was 23.16 kWh/t and 36.05 kWh/t respectively.
Get PriceOct 18, 2018· About Us About Celtest Testimonials News Services Laboratory Testing Site Testing Anchor Installation Drilling & Sawing Case Studies Contact. Alex Moore 18 October 2018 Aggregate Testing, Ball Mill Grinding, BBMWI, Bond Ball Mill Index, Bond Ball Mill Work Index (BBMWI), Bond Work Index, Crushing, Grinding Conditions, Laboratory, Mining
Get PriceThe optimum number of grinding balls is 285. However, the ball diameters vary due to wear. Therefore, the total ball number should be adjusted from time to time to ensure a total mass of 20.125 grams. The grinding jar of the Bond Index Ball Mill measures 12″ x 12″ and has well-rounded corners. Module Rod Mill
Get PriceA series of Bond ball mill work index tests run at different closing mesh sizes can be fitted in almost the same way. Work out the specific energy from the test feed size to each test's product size (solve Presented at the annual meeting of the Canadian Mineral Processors, Jan 2017, Ottawa, Canada.
Get PriceWm = Wi ( P80 10 - F80 10) (1) where: Wm - is mill specific motor output power (kWh/t), Wi - is the Bond ball mill work index (kWh/t), P80 - is sieve size passing 80% of the mill product (µm), F80 - is sieve size passing 80% of the mill feed (µm), The "efficiency factors" (Rowland, 1975) modify equation 1
Get PriceOct 24, 2018· The work index can either be measured in the laboratory (the Bond ball mill work index determination is a common example) This will usually be feed belt sample in the case of a SAG mill
Get PriceRittinger's, Kick's and Bond's laws express work input as work index (W i) times a particle size function. It is proposed that these laws are only particular cases of more general expressions having the particle size function raised to an exponent, i.e., the work exponent ( W e ).
Get PriceThis Grindability Test or Bond Ball Mill Work Index Procedure is used to determine the Bond Work Index of minus six mesh or finer feed ore samples. These equation application methods are used to process <1/2″ ore samples in a Ball Mill using a standard ball charge. Below describes in general terms the Bond Work Index Procedure used by a Professional Metallurgical Testing Laboratory. If you
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