When the mill is rotated without feed or with very fine feed, the rods are in parallel alignment and in contact with one another for their full length New feed entering at one end of the mill causes the rod charge to spread at that end This produces a series of

· Rod mill and ball mill are used to grind materials Both of them are widely used in cement manufacturing process and mineral grinding Rod mill Ball mill machine Ball mill machine has always been the main grinding equipment in wet cement production In the early years, the rod mill was first used in cement raw meal grinding, which increased the output of the grinding section by 31%, saved

The rod mill usually uses 50100mm diameter steel rod as grinding medium, while the ball mill uses steel ball as grinding medium The length of steel rod is 2550mm shorter than the cylinder, and it is usually made of high carbon steel with carbon content of 08% – 1%; the loading capacity of rod is about 35% – 45% of the effective volume of rod mill

Recommendation of ball mill and rod mill Ball mill and rod mill are suitable for different materials 1 Selection by material's hardness Ball mill has a strong adaptation of material, and it is suitable for grinding hard materials, such as slag, iron ore, copper ore, etc Rod mill is suitable for grinding brittle material, such as rare metals

As such, when the product is sticky, rod mills are preferred over ball mills Rod mills have an industrial yield that is less than that of a ball mill, which explains the fact that balls have a much larger grinding surface than rods The power needed to operate a rod mill could exceed 30% of the power used in a ball mill When they are worn, rods must not stretch but break in rather small

different grinding media of ball mills, rod mills and SAG mills Crushing ratio Comparison The biggest feature of SAG mills is the large crushing ratio, which can crush and grind the materials to 0074mm at one time, accounting for more than 20% to 40% of the total product The crushing ratio can reach 4000 ~ 5000, which is more than ten times higher than that of the ball mill machine and rod

A rod mill uses steel rods as the grinding media in tumbling mills is an efficient means to feed ball mills a product finer than could be made in a crusher but coarser than could be made in a ball mill The principal use for rod mills, which were invented to make ball mill feed in a wetgrinding rod millball mill circuit Rod mills came into use in the United States beginning in 1900s and

· Rod mill and ball mill are used to grind materials Both of them are widely used in cement manufacturing process and mineral grinding Rod mill Ball mill machine Ball mill machine has always been the main grinding equipment in wet cement production In the early years, the rod mill was first used in cement raw meal grinding, which increased the output of the grinding section by 31%, saved

· The rod mill adopts overflow type and open type discharge, does not use grate type discharge The diameter of the rod mill discharge end is larger than that of the same size ball mill When the rod mill speed is lower than the working speed of the same size ball mill, the medium in the rod mill is in a sloping working state

different grinding media of ball mills, rod mills and SAG mills Crushing ratio Comparison The biggest feature of SAG mills is the large crushing ratio, which can crush and grind the materials to 0074mm at one time, accounting for more than 20% to 40% of the total product The crushing ratio can reach 4000 ~ 5000, which is more than ten times higher than that of the ball mill machine and rod

· As mentioned above, the difference in the material flow behavior between the ball mill and the rod mill partially explains the well known difference in the product particle size distribution of ball mills and rod mills In the case of ball mills, the axial dispersion is higher and the mean residence time is shorter than those in rod mills In rod mills, the axial dispersion is lower—close to

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 conditions leading to rod charge tangling, the length to diameter ratio is maintained at 14 to 16 Rod mills accept feed up to about 50 mm (2 in) and produce a product in the size range of

Ball mill A typical type of fine grinder is the ball mill A 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 However, the smaller the rods, the larger is the total surface area and hence, the greater the grinding efficiency Autogenous mill Autogenous or autogenic mills

Ball Mill Rod Mill; Rod Mill Application: Cement Plant: Capacity: 24250 t/h: Motor Power: 751400 kW: Fineness: 01470833 mm : Download Product Brochure We will send the detail data to your ! Demands * Name; Telephone * Email; Country; Company * Message Live Chat Inquiry Overview; Features; Specifications; Order Online; Overview The rod mill is loaded with the grinding media of

No 1 rod mill/ball mill circuit was operating very efﬁ ciently when comparing the combined operating work indices for both mills with the rod mill and ball mill laboratory work indices Note, in Figure 1, that the rod mill product slope is less than 05 due to an extra amount of nes present being ﬁ ﬁ ner than 650 μm These ﬁ nes proceed to the ball mill improving the ball mill efﬁ

The mill product can either be finished size ready for processing, or an intermediate size ready for final grinding in a rod mill, ball mill or pebble mill AG/SAG mills can accomplish the same size reduction work as two or three stages of crushing and screening, a rod mill, and some or all of the work of a ball mill

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 rod mill adopts overflow type and open type discharge, does not use grate type discharge The diameter of the rod mill discharge end is larger than that of the same size ball mill When the rod mill speed is lower than the working speed of the same size ball mill, the medium in the rod mill

· The milling equipment which are widely used in the mineral processing plant are the ball mills and the rod mills The two have similarities in shape and grinding principle, but there are also differences in structure, performance, use and so on First, when the barrel rotating, the grinding medium (ball or rod) installed in the barrel body would be left to the certain height under the action

· As mentioned above, the difference in the material flow behavior between the ball mill and the rod mill partially explains the well known difference in the product particle size distribution of ball mills and rod mills In the case of ball mills, the axial dispersion is higher and the mean residence time is shorter than those in rod mills In rod mills, the axial dispersion is lower—close to

Recommendation of ball mill and rod mill Ball mill and rod mill are suitable for different materials 1 The daily maintenance requires constant addition of a certain amount of steel balls, while the rod mill only needs to be inspected and replaced in a period of timeThe product of the rod mill is rough, but the particle size is uniform, coarse particles and slime are less, the over

· generally larger than that of a ball mill of the same specification 3 Analysis of grinding media Rod mills commonly use steel rods with a diameter of 50100mm as the grinding medium, while ball

Ball mill and rod mill solutions are available here at APT, providing an effective means for grinding and blending materials in preparation for mineral liberation, from rock to dust APT specifies and designs the entire circuit around the mill, to ensure that the target product size is achieved Available ranging in size catering for throughputs of less than 1tph to well over 100tph Home

Overflow rod mill structure is similar to the overflow ball mill The difference is that the cone end cover of the rod mill has a small curvature The inside is the smooth liner plate If the liner plate is rough, it will not be used in the barrel The hollow shaft diameter for the ore discharge is large and make the steel bar avoid escaping and getting bent for hitting each other in the

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

· Fig 1 Cross sections of a rod mill and a bar mill Ball mills Ball mill (Fig 1) is same kind of mill as rod mill, except that it is filled with balls instead of rods Because of balls have greater ratio of surface area than rods they are more suitable for fine grinding Balls are also lighter, so the kinetic energy of a single dropping ball is smaller than a rod The lining material is of

Ball Mill Rod Mill; Rod Mill Application: Cement Plant: Capacity: 24250 t/h: Motor Power: 751400 kW: Fineness: 01470833 mm : Download Product Brochure We will send the detail data to your ! Demands * Name; Telephone * Email; Country; Company * Message Live Chat Inquiry Overview; Features; Specifications; Order Online; Overview The rod mill is loaded with the grinding media of

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