WEBApr 17, 2018 · Product Size: All passing 6 mesh with 80% passing 20 mesh. Net power from pilot plant: KWH/ST. Mill, gear and pinion friction multiplier: Mill Power required at pinionshaft = (240 x x ) ÷ = 5440 Hp. Speed reducer efficiency: 98%. 5440 Hp ÷ = 5550 HP (required minimum motor output power).
WhatsApp: +86 18838072829WEBJun 19, 2015 · Ball Mill Power Calculation Example #1. A wet grinder ball mill in completed circuit are to be fed 100 TPH of a material with a works index of 15 and a size distribution of 80% passing ¼ per (6350 microns). Of required product body distribution remains to be 80% passing 100 mesh (149 microns). In sort to determine the power requirement, an ...
WhatsApp: +86 18838072829WEBDec 1, 2009 · The specific energy consumptions for the HPGR and ball mill were determined based on the mill throughput rate and circuit capacity as kWh/ton and 23 kWh/ton respectively during production, and of the Horomill to be kWh/ton. Download : Download fullsize image; Fig. 6. Final product size distribution comparison.
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WhatsApp: +86 18838072829WEBThe answer is hp. Please show solution on how it arrived to that answer. Calculate the power needed to reduce 100 ton/hr of quartz (work index = kWhr/ton) in a grinding ball mill from an 80% passing size of 2 inches to an 80% passing size of 1/8 inch. The answer is hp.
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WhatsApp: +86 18838072829WEBJul 26, 2017 · As a result, the mill output will increase with this reduced size to approximately 77,000 tons per day. The gain in production compared to the 13,000 micrometer feed will be: (78,000 – 65,000)/65,000 x 100 = 20%. The theoretical gain will actually be greater because the graph in Fig. (21) is constructed according to the Gates .
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WhatsApp: +86 18838072829WEBChemical Engineering questions and answers. One ton per hour of dolomite is produced by a ball mill operating in a closed circuit grinding with a 100 mesh screen. The screen analysis (weight %) is shown in the below table. Calculate the mass ratios of the overflow and underflow to feed and the overall effectiveness of the screen.
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WhatsApp: +86 18838072829WEBNov 23, 2015 · The three tests are: The Bond ball mill work index (Wi BM, or BWi) conducted from a feed size of approximately 2 mm to a product size on the order of 100 µm. The Bond rod mill work index (Wi RM, or RWi) conducted from a feed size of approximately 10 mm to a product size on the order of 1 mm. The Bond crushing (impact) work index .
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WhatsApp: +86 18838072829WEBApr 1, 2013 · The relative capacity of a closed ball mill circuit as function of circulating load was calculated for three different classifiion arrangements: 1. cyclones with 38% of fine material reporting (bypass) to coarse product (cyclone underflow), 2. screens with 20% of fine material reporting to coarse product (screen oversize), 3.
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WhatsApp: +86 18838072829WEBBallmills are used widely for secondary grinding. Loveday (2010) reported on laboratory tests in which small pebbles (725 mm) were used in various proportions with balls. ... Proportion of pebbles in the charge (vol.%) 0 10 20 25 30 Mill power draw (kW) Productivity (kg new 75 lm/h) Energy utilization (kW h/ton new 75 lm) Productivity ...
WhatsApp: +86 18838072829WEBF80 is the feed size to the primary BM; T80 is the transfer size (prim mill product size), P80 is the final product (cyclone overflow) The F80 is the feed to the primary ball mill. The T80 (is the P80 of the primary ball mill and the F80 to the secondary ball mill circuit) is measured at the pipe departing the primary ball mill.
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