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Ball mills grind material by impact and attrition. The degree of milling in a ball mill is influenced by; Residence time of the material in the mill chamber. The size, density and number of the balls. The nature of the balls (hardness of the grinding material) Feed rate and feed level in the vessel. Rotation speed of the cylinder.

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The residence time distribution function describes the flow through the mill while grinding equations describe the breakage behavior as a function of time. In this study, salt tracer tests have been performed on an industrial secondary ball mill at different operating conditions.

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The percentage through the smallest mesh can also be used to determine Rcl, as follows: The same as circulating load using pulp densities where the screen analyses of the three samples are as follows. ... are screened and the cumulative weight percentage retained is calculated for several mesh sizes to obtain the Ball Mill Circulating Load ...

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Aug 11, 2010· Re: MATERIAL RETENTION TIME IN A BALL MILL & VRM. You could do that by measuring the material flowrate Q[tons/h] through the mill as well as the quantity M[tons] of material that accumulates within the mill. The retention time, also called residence time, is the ratio (M/Q) [h] .

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Residence time distributions normalized by mean residence time as a function of mill revolution speed for centrifugal mill operated at G/D = 0.4, 60% ball filling, and feed rate of 150 g/min. It is convenient to represent the RTD in a functional form.

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Calculation Of Ball Mill Residence Time. Calculation Of Ball Mill Residence Time calculate ball mill retention time - Grinding Mill,Types . MATERIAL RETENTION TIME IN A BALL MILL & VRM - . residence time to be used to calculate i, i, and Œij in equation (8.66) is τ1 M. Free Chat To Get More . …

How To Calculate Residence Time In A Ball Mill

Material retention time in a ball MILL & VRM. Dear all can anybody suggest me how to calculate the material retention time in a closed circuit ball MILL in each compartment?The retention time, also called residence time, is the ratio (M/Q) [h] .

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