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CALCULATION OF BALL MILL GRINDING EFFICIENCY Page 1 of 1 calculation of ball mill grinding efficiency dear experts please tell me how to calculate the grinding efficiency of a closed ckt & open ckt ball mill in literatures it is written that the grinding efficiency of ball mill is very less [less than 10%] please expalin in a n excel

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At present, the wet milling processing is a usual method in the Jun 20, 2012 Ball mill rotates at a constant speed, causing the mutual impact and friction speed of the ball mill becomes the very critical factor to the efficiency of the vector controlling calculation; the force of the ball mill is separated to

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Jun 15, 2018 · Water Injection in Ball mill (for cement grinding): Ball mill generally produces a lot of heat, as the material advances in the mill, the temperature increases If the temperature increases beyond 110 degree different problems are encountered, they are, Fall of fluidity of the material Production of superfine particles Coating of the balls and linings

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Sep 18, 2018 · CALCULATION OF BALL MILL GRINDING EFFICIENCY Page 1 Mar 08, 2013· calculation of ball mill grinding efficiency dear experts please tell me how to calculate the grinding efficiency of a closed ckt & open ckt ball mill in literatures it is written that the grinding efficiency of ball mill is very less [less than 10%] please expalin in a n

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µm Note thatin order for no correction factor for ball mill product fineness to applythe ball mill circuit P80 should be no less than approximately 70 µm (Bond, 1962) This Bond Efficiency determination should not be applied to circuits with a P80 finer than approximately 70 µm without making qualifications 3 Calculate the circuit

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Keywords: Ball mills, grinding circuit, process control I Introduction Grinding in ball mills is an important technological process applied to reduce the size of particles which may have different nature and a wide diversity of physical, mechanical and chemical characteristics Typical examples are the various ores, minerals, limestone, etc

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Sep 11, 2014 · At what speed will the mill have to be run if the 100 mm balls are replaced by 50 mm balls, all the other conditions remaining the same? Calculations: The critical speed of ball mill is given by, where R = radius of ball mill; r = radius of ball For R = 1000 mm and r = 50 mm, n c = 307 rpm But the mill is operated at a speed of 15 rpm

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Jan 07, 2015 · ~ Nael Shabana 20104~ 10 Definition of Ball/ Tube Mill: Ball or tube mills are rotating steel cylinders where size reduction of the mill feed is performed by motion of the grinding media Rotation of the mill cylinder raises the pile of mill feed and grinding media to an optimum high, necessary for grinding operation

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A direct measurement of the ball level in the mill, more accurate than power readings, as well as a control of it, is therefore highly important Load angle as an indicator of milling efficiency? Toe and shoulder angles of the charge are always used for liner design …

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Ball Mills are generally used to grind material 1/4 inch and finer, down to the particle size of 20 to 75 microns To achieve a reasonable efficiency with ball mills, they must be operated in a closed system, with oversize material continuously being recirculated back into the mill to be reduced

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Dec 12, 2016 · Ball Mill Power Calculation Example A wet grinding ball mill in closed circuit is to be fed 100 TPH of a material with a work index of 15 and a size …