rod mills over ball mills

Grinding medium of rod mill. The rod of diameter from 50 to 100 mm is often used as the grinding medium, and the filling rate of rod mill is 35% to 45%, while filling rate of ball mill is 40% to 50%. Rod is mainly made of several materials: A High carbon steel.

The ball mill is commonly divided into grid type ball mill and overflow type ball mill (named by the different discharging structure). The rod mill is divided into overflow type and open type rod mill, whose diameter of hollow shaft is generally larger than that of ball mill with the same specifications. 3.

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The product size distribution is narrower than aball millbut significantly coarser. Most are overflow discharge type. Length-to-diameter= 1.4 to 2.3.Milllength = 7 meters.Rod Mill-Ball MillCircuits Diagrams ofmillcircuits [image: (135-8-2)]

Rod millsare used in an open circuit between crushing and theball mill. They often operate in wet and where the pulp contains up to 50% solid by mass. This machine is equally very applicable to dry where it could take a feed that has achieved 6% moisture. As such, when the product is sticky,rod millsare preferredover ball mills.

We supplyover2000 tonnes of variousmillliners into the market. Materials as specified above can be used inBall,Rod, Sag and FAGmills. Themillsare Allis Chalmer type, steel heads and usually supplied with white metal bearings, however roller bearings are available on request.

Ball Mills, PebbleMills, Material ProcessingMills: For more than a century, Patterson has been the industry leading manufacturer of wet and dry grindingmillsfor size reduction or dispersal. Patterson’sball, pebble androd millsare built to last. We are still filling parts requests formillssoldover60 years ago. Pattersonmillsare available in a wide variety of standard sizes and ...

Rod millsoperate at lower speed thanball millssince therodsare rolled and not cascaded. For an equivalent grind, arod milluses less steel than aball millbecause of the lower speed and better contact between the media and ore. Therodcharge must be maintained in good working condition, and broken and wornrodsmust be removed.Rod millsusually require greater operator attention. It is important …

9ft x 14ftBall Mill, 500hp motor,Rod Mill: 5:Ball Mill: GM060: 9ft x 35ft Allis ChalmersBall Millwith 1250hp Synchronous Motor, 240rpm, 4160v, shell can be resize to any size. SOLD : 1:Ball Mill: GM015: 10.5 Ft x 12 Ft Allis ChalmersBall Mill, No Liners, 800hp Motor, gears in excellent condition. SOLD : 1:Ball Mill…

Oleg D. Neikov, in Handbook of Non-Ferrous Metal Powders, 2009. TumblingBall Mills. Tumblingball millsorball millsare most widely used in both wet and dry systems, in batch and continuous operations, and on a small and large scale.. Grinding elements inball millstravel at different velocities. Therefore, collision force, direction and kinetic energy between two or more elements vary ...

Rod mills,ball mills, autogenousmills, and semi-autogenousmills(SAGMills) all have a number of lubricating and hydraulic systems, and they must work to keep mineral output high. Themillsystems oil is subject to extreme levels of very fine particles, and many operators believe the plant should be shut down periodically to change the oil.

The daily maintenance requires constant addition of a certain amount ofsteel balls, while therod millonly needs to be inspected and replaced in a period of time.The product of therod millis rough, but the particle size is uniform, coarse particles and slime are less, the over-pulverization is lighter.Theball millhas high production capacity, strong adaptability, fine discharge particle size, easy for fine grinding, …

Ball MillsorRod Mills. Kenmore Equipment can supply new or second handBall MillsorRod Millsto specific request. From 4’ (1 metre) diameter to 18’ (5.5 metre) diameter. These can be overflow or grate discharge, supplied with the following liners:

Therod millusually uses 50-100mm diameter steelrodas grinding medium, while theball millusessteel ballas grinding medium. The length of steelrodis 25-50mm shorter than the cylinder, and it is usually made of high carbon steel with carbon content of 0.8% – 1%; the loading capacity ofrodis about 35% – 45% of the effective volume ofrod mill.

Jun 11, 2019· Theballandrod millsare 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. Bothballandrod millscan be operated either wet or dry, and in a batch or a continuiously mode.

Rod Mills Over Ball Mills.Ball millis the key equipment for grinding after the crushing process, which is widely used in the manufacture industries, such as cement, silicate, new building material, refractory material, fertilizer, ferrous metal, nonferrous metal and glass ceramics and can be used for the dry and wet grinding for all kinds of ...

rod millhigh strength - hridayafoundationorg.Over1 million products that ship and deliver fast , Similar to theball millwork index, therod millwork index is a tumbling test that includes both attrition and abrasion breakage mechanisms Unlike theball millwork index, the size of the feed to arod milltest (10 mm12 mm) is closer to the size of the ,

Rod Millan overview ScienceDirect Topics. As such, when the product is sticky,rod millsare preferredover ball mills.Rod millshave an industrial yield that is less than that of aball mill, which explains the fact that balls have a much larger grinding surface than rods.

Recommendation ofball millandrod mill Ball millandrod millare suitable for different materials 1. Selection by material's hardnessBall millhas a strong adaptation of material, and it is suitable for grinding hard materials, such as slag, iron ore, copper ore, etc.Rod millis suitable for grinding brittle material, such as rare metals.

Open CircuitRod Mill-Closed CircuitBall Mill. This configuration has proven in the past to be a most reliable system due to the fact thatrod millsare not particularly susceptible to variations in feed size. However, the necessity to procure grinding rods may limit …

Jun 11, 2019· dalmatiangirl61: In the order you have listed; aball millcan fine grind down to <400 mesh if needed, arod millwill efficiently grind to 150/200 mesh range, and aroll millcan do a +/- 100 mesh. Theballandrod millsare similar in appearence, as a large rotating lined cylindrical tube filled with either metalballsor longrodsused as the grinding medium.