As for as ball to powder ratio is concerned, if the purpose is mixing you should go for 5-10 ration of ball with powder. In case if you want to reduce the size or ally the powder then select high ...

Get Pricecalculate the reduction ratio of ball mill; Optimum choice of the make-up ball sizes for maximum. Fig. 8 shows the optimum composition of the make-up ball sizes for various feed sizes as a function of the size reduction ratio, R. Because mixtures of two balls (50.8 mm and 25.4 mm ball) are always found to be optimum, the results are plotted with the ordinate being the fraction of 50.8 mm balls ...

Get Price01.09.2013 · An equation is proposed for calculating the optimum composition of the make-up balls. Abstract. A grinding circuit simulation combined with ball weal law was used to determine the optimum composition of the make-up ball sizes in tumbling ball mills. It was found that the optimum composition depends on various factors, including the feed size, the product size, the mill diameter and the ...

Get Priceapproach acknowledges grinding efficiency as the ratio of operating work index to that for a single-stage ball mill. The Barratt approach is the basis of the Millpower 2000 computer-based program (Matthews and Barratt, 1991). E SAG = 1.25.[(10.W iC.S C)+(10.W iR.S R.K r)+(10.W iB.S B.K b]-(10.W iB.S SB.K b) (2) Where: E SAG = SAG mill specific energy (kWh/t) W iC,R,B = Crushing, Rod and Ball ...

Get PriceAnnex 16. Mill calculation Plant : Mill : D L P l L1 L2. Date : Visa : 5.00 16.00 5,700 3.2 36 64 [m] [m] [kW] [-] [%] [%] Mill Dimensions Diameter Length Motor power (inst.) L/D - Ratio Compartment lengths. Data Internal diameter Internal length Filling degree Spec. media weight Mill speed Drive efficiency mech. Drive efficiency electr. Mill throughput Fineness product Relative mill speed ...

Get Price10.03.2011 · Re: How Can I calculate new ball size and weight desing for ball mill. Hi, We have a similar mill. Pregrinding with hammer crusher and mono-chamber mill. Thisis what a proposed based on literture review i did and others agree its more and less correct. But remember it all depends on your mill feed size after pregrinding.

Get PriceThe degree of filling the mill with balls also influences productivity of the mill and milling efficiency. With excessive filling, the rising balls collide with falling ones. Generally, filling the mill by balls must not exceed 30–35% of its volume. Productivity of ball mills depends on drum diameter and the relation of drum diameter and length. Optimum ratio between length L and diameter D ...

Get PriceFigure 8.5 Effect of mill filling on power draft for ball mills. The data is taken from Rexnord Process Machinery Reference Manual, Rexnord Process Machinery Division, Milwaukee, 1976 The effect of varying mill speed on the power drawn by the mill is shown graphically in Figure 8.4 The speed of rotation of the mill influences the power draft through two effects: the value of N and the shift in ...

Get PriceBall mill- what is the % of filling by balls and % of filling by materials ? ball mill size dia=2 meter, length 8 m, inner dia= 1.888 m, material to be grinded= illuminate, ball size= 20,30,40 mm ...

Get PriceCALCULATION OF THE FILLING DEGREE THE BALL MILL WITH GRINDING MEDIA: THE RESULTS AND FEEDBACK. April 28, 2020 · fresh · 0 . In January this year, we launched a new service on our website. Therefore, for those of you who don't know it yet, we recall that this service is intended for calculation of the filling degree the ball mill with grinding media. You will receive accurate calculation .

Get PriceBy calculating the ratio ... mill absorbed power and ball filling degree. As indicated on the graph, a small variation in power could be the result of a significant variation of balls filling degree. As the ball wear rate depends directly on the surface of the media charge, a small variation in power will lead to an important increase of wear rate. The risk of underloading or overloading the ...

Get PriceBest way to determine the ball-to-powder ratio in ball. The maximum power draw in ball mill is when ball bed is 35-40 % by volume in whole empty mill volume. Considering that ball bed has a porosity of 40 %, the actual ball volume is considered to be . get price. calculation of filling volume in ball mill. Calculate Ball Mill Grinding Capacity 911 Metallurgist. Mar 17, 2017 The sizing of ball ...

Get PriceCALCULATION OF THE FILLING DEGREE THE BALL MILL WITH GRINDING MEDIA: THE RESULTS AND FEEDBACK. April 28, 2020 · fresh · 0 . In January this year, we launched a new service on our website. Therefore, for those of you who don't know it yet, we recall that this service is intended for calculation of the filling degree the ball mill with grinding media. You will receive accurate calculation .

Get PriceThe results showed that at a constant mill filling, the power draw was changed with changing the ball size distribution and for all mill fillings the maximum power draw occurred when the fraction ...

Get PriceReport on Ball mill. ... all cases, some manufacturers for the ball mill, and estimation of the cost the ball mill. ... ^2 The bulk volume of balls charge ratio to the volume of mill is known as {Filling ratio} and its range is {30-45%} ^2...

Get PriceCALCULATION OF THE FILLING DEGREE THE BALL MILL WITH GRINDING MEDIA: THE RESULTS AND FEEDBACK. April 28, 2020 · fresh · 0 . In January this year, we launched a new service on our website. Therefore, for those of you who don't know it yet, we recall that this service is intended for calculation of the filling degree the ball mill with grinding media. You will receive accurate calculation .

Get Priceball milling Ar c Franziska Schneider, Org. Proc. Res. & Develop., 2009, 13,44 Up to 96% yield Entry Rpm T (min) Yield% 1 400 10 92 2 800 5 94 . Aldol Condensation 17 B. Rodr´ıguez, Angew. Chem., Int. Ed., 2006, 45, 6924 O + H O R (S)-proline 10 mol% Ball milling (A) or stirring (B) H R Entry R= Method t/h Yield% anti/syn ee% 1 4-NO 2 A 5.5 99 89:11 94 2 4-NO 2 B 24 95 89:11 94 3 3-NO 2 A 7 ...

Get PriceThere should be atleast 25% empty place in the milling jar after feeding balls and the material while high energy impact. There is no such thumb rule for powder to ball ratio.

Get PriceThe design of a ball mill can vary significantly depending on the size, the equipment used to load the starting material (feeders), and the system for discharging the output product. The size of a mill is usually characterized by the ratio "length to diameter" and this ratio most frequently varies from 0.5 to 3.5.

Get Priceor investigation on the ball filling ratio under batch wet conditions, due to load density alters [2, 3]. In addition it is to be noted that too large or too small mills load filling could conduct to unproductive operating conditions, or to an aggressive operation for the liners, respectively. The operating principle is based on the processing of electrical variables of the motor vector ...

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