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 a...
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WhatsApp: +86 18838072829The power input required to maintain this condition is theoretically: hp = (W) (C) (Sin a) (2π) (N) where W = weight of charge. C = distance of center of gravity or charge from center of mill in feet. a = dynamic angle of repose of the charge. N = mill speed in rpm. The value of the angle a varies with the type of discharge, percent of ...
WhatsApp: +86 18838072829Small Ball Mill Capacity Sizing Table. Do you need a quick estimation of a ball mill's capacity or a simple method to estimate how much can a ball mill of a given size (diameter/lenght) grind for tonnage a product P80 size? Use these 2 tables to get you close. No BWi Bond Work Index required here BUT be aware it is only a crude ...
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WhatsApp: +86 18838072829The circulating loads generated in a typical ball mill cyclone circuit contain a small fraction of bypassed fines. The concept that high circulating loads will result in overgrinding can be refuted by regarding increases in circulating load in the same vein as multistage grinding. That is, for every incremental increase in circulating load of ...
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WhatsApp: +86 1883807282934 NOVEMBER 2018 Mınıng engıneerıng Crushing and Grinding Examples (ten) of equilibrium ball charges for the torque mill (top sizes). Table 1 89 mm ( in) 64 mm ( in) 38 mm ( in) 50/50 wt% 76/25 mm 50/50 wt% 51/25 mm
WhatsApp: +86 18838072829A wet grinding ball mill in closed circuit is to be detective 100 TPH of a substance with a work index of 15 and a size distributor of 80% passing ¼ inch (6350 microns). The required product size market is to breathe 80% passing 100 mesh (149 microns). In order in define the influence requirement, the steps are as follows: Example Calculation
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WhatsApp: +86 18838072829Here is a formula that allows you to calculate the circulating load ratio around a ball mill and hydrocylone as part of a grinding circuit. For example your ball mill is in closed circuit with a set of cyclones. The grinding mill receives crushed ore feed. The pulp densities around your cyclone are sampled and known ... Read more
WhatsApp: +86 18838072829ore to ball mill feed. In recent years, the trend has been towards largersized SAG mills with diameters of m (34 ft) and above, with the largest being m (40 ft) in ... liners wear (and lifting capacity falls) even when mill speed can be increased. The major proportion of mill power is used to turn over the mill charge. It follows ...
WhatsApp: +86 18838072829n = c9np/√D, the above equation becomes P = f1 (D²)·f5 (πD c9 np/√D) = cs np As a first approximation, the capacity, T, of a mill may be considered as a function of the force acting inside the mill. Therefore T = f6 (F) = f1 (D²)·f7 (υ) tph..................... (12) Indicating again that υ = πDn, and n = c9np/√D, Eq. 13 becomes
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WhatsApp: +86 18838072829resulting in the need for additional ball mill ing capacity in order to maintain recoveries, ... Throughput (dry tonnes Test) tph 1070 1596 946 564 1760. SAG Feed F80 mm 39 70 85.
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WhatsApp: +86 18838072829The purpose of this study is to investigate and simulate the optimal operating conditions of a ball mill in a copper processing plant. ... 324 to 340 tph. The results of these studies showed that ...
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WhatsApp: +86 18838072829Power drawn at the pinion is 448 kW, kWh/tonne (SAG mill) and 570 kW, kWh/tonne (ball mill) when processing mtph, for a total of kWh/tonne or % above the conventional estimate. A ball charge volume which is lower than those tested has been selected in order to minimize wear. Obviously, the SAG mill is consuming ...
WhatsApp: +86 18838072829One of Russia's largest ball mill in size 4,6×14 m, with an power installation is 4250 kW [11] when the specific surface of the finished product in 3230 cm2pg reached capacity 126 tph. In this case the specific energy consumption was 35 kWhpt. Metal consumption in the production output amounted to tp(tph) at a specific volumetric ...
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WhatsApp: +86 18838072829When the relative capacity varies greatly, that of the ball mill calculated by the traditional model fluctuates between and, while the new model is to
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