3. Analysis of grinding media. Rod mills commonly use steel rods with a diameter of 50100mm as the grinding medium, while ball mills use steel balls as the grinding medium. The difference in the ...
WhatsApp: +86 18203695377Rod Mills. Rod mills (see Fig. 17) follow the general dimensions of tube mills with diameters from 3 to 6 ft. and lengths from two to three times their diameter. They differ from ball mills in that steel rods 3 or 4 in. shorter than the mill length inside the liners are used as grinding media.
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WhatsApp: +86 18203695377Ball milling loaded with steel balls, it has a high grinding force and stable speed. Rod mills usually equipped with steel rod which diameter mostly between 50100mm, need a longer grinding time. The number of bins in a rod mill is generally two to four, and there are some differences in the grinding media loaded in each bin
WhatsApp: +86 1820369537716,000µ for the rod mill and 4,000µ for the ball ... 25 manufacturers' mill size and power relationships For SAG mills the equation becomes Power=(+%balls*)*D24. 6* L Mill Critical speed Crit Crit D = n revs per min nC= s*Crit Cs is the fraction of the critical speed
WhatsApp: +86 18203695377Rods in place weigh approximately 400 pounds per cu. ft. and balls in place approximately 300 pounds per cu. ft.. Thus, quantitatively, less material can progress through the voids in the rod mill grinding media than in the ball mill, and the path of the material is more confined. This grinding action restricts the volume of feed which passes ...
WhatsApp: +86 18203695377Rod mill features. 1 The rod mill usually uses a steel rod with a diameter of 50100 mm as a grinding medium. The length of the steel rod is 2550 mm shorter than that of the cylinder, and is ...
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WhatsApp: +86 18203695377Ball mill and rod mill Differences between ball mill and rod mill 1. Different capacity and granularity Ball mill. The capacity of ball mills is ~ 615t/h, and the discharge particle size of the ground material is ~ Rod mill. The capacity of rod mills is ~ 180t/h, and the discharge particle size is ~ 2.
WhatsApp: +86 18203695377The product from the rod mill is either fed directly to a ball mill or to a classifier. The coarser fraction is then fed to the ball mill. The rod mills are normally operated in open circuit and ball mills normally are operated in closed circuit. Some common circuits are illustrated in Figure, Figure, Figure Download : Download ...
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WhatsApp: +86 18203695377The barrel shape of the rod mill and the ball mill is different: the barrel of the rod mill is a long cylinder type, and the ratio of the length to the diameter is generally ; the barrel of ...
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WhatsApp: +86 18203695377If N is taken to be the gross mill power, values of the factor c in wet grinding mills will be. rod mills 1/1800 ball mills, grate discharge 1/1200 ball mills, overflow type 1/1470 pebble mills 1/1200. W for rod and ball mills shall be taken as the weight of the rod or ball charge, the weight of the pulp is to be ignored.
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WhatsApp: +86 18203695377The practice of charging a predetermined ratio of two or more ball sizes to a mill is called rationed ball charging. Maximum ball size is determined by several factors, including composite feed size, Bond Work Index, mill speed, mill diameter, and circulating load. An empirical equation was published by Azzaroni in 1981 to describe the ...
WhatsApp: +86 18203695377Rod mill is very similar to ball mill except for the use of steel rods as grinding media. Steel rods grind the ore by rolling and rotating in the rod mill. The feeding of rod mill is about 50 mm and the output particle size is between 4 and 35 mesh. Inquiry competitive rod mill price directly from rod mill manufacturers.
WhatsApp: +86 18203695377These two types of mills are filled with varying compositions of grinding media. SAG mills contain balls of up to 150mm in diameter that occupy 5%18% of mill chamber volume. Ball mills, conversely, contain grinding media up to 50mm in diameter, occupying between 25% 40% of mill chamber volume.
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WhatsApp: +86 18203695377Although they have the similar working principle, there are many differences between ball mill and rod mill on details. 1. Configuration of ball mill and rod mill. The proportion of cylinder shape is different. The cylinder lengthdiameter ratio of rod mill is generally, while the cylinder lengthdiameter ratio of ball mill is smaller ...
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