how to calculate mills and crushers power requirement from canada

ball mill motor power draw sizing and design formula

Oct 19, 2015 · Ball Mill Motor Power Draw Sizing and Design Formula. The following equation is used to determine the power that wet grinding overflow ball mills should draw. For mills larger than 3.3 meters (10 feet) diameter inside liners, the top size of the balls used affects the power drawn by the mill. This is called the ball size factor S

estimation of motor power output for crushing by screen

Jan 01, 1993 · When the motor output (kW) of a mill is large compared with the maximum crushing capacity of a mill, the maximum crushing capacity will be decided by two factors. The first factor is the maximum hold-up H". max in the mill. The second factor is the mean residence time t through the mill. Maximum crushing capacity of a mill 72 Figure 1

crushing in mineral processing

Dec 26, 2015 · Since there are not that many small SAG mill operations of under 2000 TPD, and most sub-2000 TPD mills are built with rod mills and/or ball mills only; the upstream crusher plant needs to have sufficient crushing power to provide a P80 to grinding of typically <1.5″ (40 mm) and often as finely crushed as <3/8″ (9 mm)

bond work index formula-equation

Jul 15, 2013 · What is the Bond Work Index Formula-Equation? In case you had forgotten, here is a classic: You can read all the details of this now “Biblical” grinding power requirement calculation formula in Fred Bond’s original paper.. You can also review the step-by-step Bond Work Index Test Procedure I posted here.. See this useful summary Table of Bond Work Index by Minerals

size reduction (giki) - slideshare

Oct 10, 2014 · The same machine is used to crush dolomite at the same rate from 6mm diameter of average size to the product which consist of 20% with an average diameter of 0.25 mm, 60% with an average diameter of 0.125 mm and the balance with an average diameter of 0.085 mm. Estimate the power required to drive a crusher

electrical wire & cable size calculator (copper & aluminum)

Calculating Wire/Cable Size formula for Three Phase Circuits. Wire Circular mils = √3 x 2 x ρ x I x L / (% Allowable Voltage drop of source voltage ) Note: the Value of ρ = Specific resistance or resistivity of Conductor is used here for copper and aluminum is 11.2 and 17.4 respectively at 53° C (127° F) Also check the “Good to know

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amit 135: lesson 6 grinding circuit – mining mill operator

The mill product can either be finished size ready for processing, or an intermediate size ready for final grinding in a rod mill, ball mill or pebble mill. AG/SAG mills can accomplish the same size reduction work as two or three stages of crushing and screening, a rod mill, and some or all of the work of a ball mill

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autogenous and semi-autogenous mills - sciencedirect

Jan 01, 2016 · Mill Power, Load and Mill Operation. The operation of AG and SAG mills may be guided by the relation between maximum mill load and mill power as given in Equation and modified later by Morrell (Equation ). The following general remarks are of interest: 1. While starting a mill, a low power draw suggests the feed rate has to be increased. 2

size reduction & milling - hosokawa micron powder systems

From lab/pilot to production requirements, Hosokawa Micron Powder Systems offers a complete line of size reduction technologies. Whether you call it size reduction, micronization, milling, pulverizing, jet milling, air milling, or simply grinding, we can help. Our broad application expertise allows us to help you select the technology that works best for your application. We

2. energy consumption

steam and power balances; - extent of energy conservation measures adopted; - standard of housekeeping and maintenance. 2.4.2 Specific energy requirements. Obviously such dissimilarities between mills lead to an equally diverse range in the amount of energy required to produce each particular product

how to calculate load torque & motor power

Mar 04, 2006 · 4) The conveyor design one has to first decide the tractive pull or sum of all resistances. The sum of resistances = tractive pull. The tractive pull multiplied by the drive pulley radius will give you the load torque. There is no short cut for deciding the load

the feed is introduced into the inner cage o centrifugal

Cone Crushers o Consists of a conical crushing head similar to that of the gyratory crusher. The operation between the gyratory and cone crusher is that the outer stationary crushing plate flares outward to provide increasing area of discharge so that the machine can quickly clear itself of the reduced product. 3

conduit fill calculator | southwire

Calculate Your Conduit Fill Percentage. A great tool to help electricians, engineers and contractors answer the question, "What size conduit do I use per the NEC®?" The app will calculate the conduit fill percentages and jam probability for multiple conductors per NEC® Guidelines. Simply enter the conduit type and size, then specify your

bond work index - an overview | sciencedirect topics

The Bond work index is not solely a material constant but is influenced by the grinding conditions. For example, the finer the grind size desired, the higher is the kWh/t required to grind to that size. Magdalinovic [38] measured the Bond work index of three ore types using different test screen sizes. He produced a correlation between the mass of test screen undersize per revolution, G, and

medium voltage drives | sinamics electric drives - simply

Mainly used in large high-power and high-speed applications such as pumps, fans, compressors, main marine drives, extruders and rolling mills, shaft generators, boiler feed pumps, wire rod mills, starting generators, pump storage and starting applications (e.g., blast furnaces)