Rod mills, how they function. Rod mills are very similar to ball mills, except they use long rods for grinding media. The rods grind the ore by tumbling within the the mill, similar to the grinding balls in a ball mill. To prevent the ... Wet grinding rod mills are normally used in the mineral processing industry. Dry grinding is ...
Dec 30, 2012· Mill (grinding) – Wikipedia, the free encyclopedia. Rod mills are less common than ball mills for grinding minerals. The rods used in the mill, usually a highcarbon steel, can vary in both the length and the diameter. »More detailed
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Ball mills Ball mills are typically used for secondary and/or tertiary grinding to prepare the material for downstream concentration processes. Rod mills Rod mills are mainly used for primary grinding of crushed ore with a particle size range up to 50 mm for soft .
Rod mills operate at lower speed than ball mills since the rods are rolled and not cascaded. For an equivalent grind, a rod mill uses less steel than a ball mill because of the lower speed and better contact between the media and ore. The rod charge must be maintained in good working condition, and broken and worn rods must be removed.
The design characteristics of industrial rod mills are similar to ball mills. Most rod mills used in mineral processing are of the overflow discharge type as illustrated in Figure Centre peripheral (Figure ) and end peripheral discharge mills (Figure ) are also in feed end is generally fitted with spout feeders, scoop feeders, double scoop feeders or drum feeders.
Grinding Mills. Westpro's heavy duty grinding mills are designed for durability and excellent grinding performance in mining applications. 6ft Diameter x10ft Ball and Rod Mills at the Westpro Shop. Advantages. Sizes up to (16ft) diameter and 4500HP (3356KW)
Jun 11, 2019· The ball and rod mills are similar in appearence, as a large rotating lined cylindrical tube filled with either metal balls or long rods used as the grinding medium. In some cases, they can be used interchangable, but not with a mix of balls and rods. Both ball and rod mills can be operated either wet or dry, and in a batch or a continuiously mode.
The mills are Allis Chalmer type, steel heads and usually supplied with white metal bearings, however roller bearings are available on request. Larger mills can be supplied with gear boxes, or direct synchronous motor drive, and variable speed can be an option. Ball Mill or Rod Mill Spares
The LAARMANN Ball / Rod Mill is designed to meet the industrial requirements to grind coal, cement and a wide variety of ores related to the Bond Ball Mill and Bond Rod Mill WORK INDEX. This index is used to calculate the power draw requirements of a rod mill. Read more. ball mill, cement mill, sand maker, beneficiation equipmentZoneding ...
slide 2: SHUOSEN Difference Rod mill Ball mill Different grinding media The grinding media of rod mill is steel bar The grinding media of a ball mill is a steel ball Grinding media work in different ways The contact between the steel rod and the material is the line contact The contact between the steel ball and the material is the point contact Different applicable materials rod mill is ...
Please find below two calculators for sizing mills using the Bond and Rowland methods: Ball mill sizing: Calculator for ball mill(s) in a single stage circuit. Rod ball mill sizing: Calculator for rod mill(s) as first stage of the circuit and ball mill(s) as second stage of the circuit.
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Because of this, rod mills are normally operated with a 32 to 40 percent charge by volume. In operation, this becomes a 40 to 50 percent charge, with a bulk density considerably lower than that of stacked rods. Ball mill charge becomes measurably swollen only when there is a buildup of large unground material in the ball mill or when the ...
We have a wide range of inhouse built and imported ball mills. Both batch and continuous feed mills are available with steel or rubber replaceable lining. Custom builds .