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 wedge shaped slots tapering toward the discharge end The tumbling and rolling rods expend most of their crushing force on the ,

Get PriceThe Mikro-Pulverizer® Hammer & Screen Mill is a high speed mechanical impact mill designed for continuous size reduction down to D90 45 μm Mikro® UMP Universal Milling System The Mikro® UMP Universal Milling System is a compact, high speed impact mill capable of coarse granulation or fine size reduction with interchangeable rotor ,

Get PriceRod mills are limited in size to 2000 kW because the longest commercial grinding rod available is 6 m long For this reason , low as 10 kWh/t and a reduction ratio as high as 30 Actual cases are, the initial nine 18 ft ID × 21 ft EGL overﬂ ow ball mills installed at Bougainville in 1969 An unpublished

Get PriceBall mills with a drum length to diameter ratio greater than 15 are referred to as tube mills Ball mills may be primary or secondary grinders Primary grinders are fed from crushers such as a jaw crusher Secondary grinders are fed from other grinders eg a rod mill Ball mills are usually either of the grate (diaphragm) or overflow type

Get Price5-Stand Cold Reduction Mill With the growing demand for quality galvanized and cold rolled steel products, coupled with the high quality needs of our customers for strip gauge accuracy, flatness, and enhanced surface quality, CSI recognized the need to increase cold reduction capabiliti

Get Pricesize reduction 3 Grinders like hammer mills, rolling-compression mills, tumbling mills, etc Grinders are used for intermediate and fine size reduction 4 Ultrafine grinders like hammer mills, agitated mills, fluid-energy mills, etc The basic motive behind performing the size-reduction is to make too large to be used solid materials usable

Get Pricelength so the mill can achieve uniform size reduction Tests at the mill manufacturer’s facility can determine the best roll gap for your size reduction requirements How the mill saves energy and minimizes waste The roller mill requires less energy than other attrition milling methods that rely on multiple high-speed impacts, Roller mill ,

Get Pricereduction ratio of grinding mill rod mills with high reduction ratio FlexiBle The reduction ratio, R, in rod mills varies from 2 and 20 depending on the characteristics of the oreThe usual reduction ratio is about8 According to Bond, the reduction ratio is a function of length and diameter of the mill get price ,

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Get PriceNov 27, 2015· Good figures for rod and bar mills are 90 % to 93 %, for structural mills, the good mill utilization figures are 75 % to 78 % If a mill rolls 80 % of the calendar year, that is 365 x 24 x 080 = 7008 hours If the mill rolls 800,000 tons per year, it runs ,

Get Pricehigh reduction ratios The experimental procedure was similar to that described above except that asingle crushing step oflarge reduction ratio was used The severity ofthe crushing process isindicated inPlate 2 and by the load/displacement curve shown inFig 1 Theproduct sizedistributions oftwotypical examples of packed bedcrushes areshown ,

Get PriceTo 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 3000 to 270 mm (–4 to –35 mesh) Grinding action is by line contact between the rods extending the length of the mill

Get Pricemilling circuit consists of a rod mill followed by a ball mill in seri Crusher product (-9 mm) is fed to the rod mill, and the water is fed in ratio to the ore feed mass The rod mill discharge is pumped, without any further water addition, to the first ball mill The ball mill discharges to a sump where water is

Get Price EF1 – Dry Grinding – for the same range of work, dry grinding requires 13 times as much power as wet grinding EF2 – Open Circuit Grinding – when grinding in open circuit ball mills, the amount of extra power required, compared to closed circuit ball milling, is a function of the degree of control required on the product produced The inefficiency factors for open circuit ,

Get Priceratio range varies from 3:1 to 9:1 For similar epicyclic planetary stages with compound planet gears, the practical gear ratio range varies from 8:1 to 30:1 Using differential-planetary gear arrangements it is possible to achieve gear ratios of several-hundred-to-one in one-stage-drive with common planet gears, and several thousand- to-one in ,

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Get PriceMills usually operate in the range 65 - 82% of critical but values as high as 90% are sometimes used A crucial parameter that defines the performance of a mill is the energy consumption The power supplied to the mill is used primarily to lift the load (medium and charge) Additional power is required to keep the mill ,

Get PriceCheck the data on the mill cert and report the reduction ratio to your customer If your rolled bar has a high enough RR that might be acceptable RE: Rolled vs Forged Bar redpicker (Materials) 16 Jul 13 18:27 A forged bar is produced by taking an ingot or bloom and forging it down to size by, generally, two opposing flat di With a rolled ,

Get PriceDurable High Crushing Ratio Coal Grinding Mill For Rod mill is widely used grinding machine to grind all kinds of ore and rocks in metal and nonmetal mining, water conservation, building materials, sand making industry and so on The rod mill is composed by the cylinder part, feeding part, discharging part, main bearing part and driving

Get PriceHigh Production Ratio Rod Mill , Find Complete Details about High Production Ratio Rod Mill,Rod Mill,Mining Rod Mill,Ball Mill For Mining from Mine Mill Supplier or Manufacturer-Ganzhou Gelin Mining Machinery Company Limited

Get Priceblooms and is ideal for providing the needed reduction ratio for larger bars It also produces 11" x 17" blooms to feed our Harrison Plant for small diameter bars The in-line forge press, rolling mill and billet conditioning operations deliver SBQ bar from 6" to 16" (152 mm to 406 mm) The large bar produced by Faircrest has quality and

Get PriceCage Mills have a high ratio of size reduction after a single pass Rod mill b)Ball mill The reduction ratio is defined as the representative feed size by » Learn More calculation of reduction ratio ball mill mayukhportfoliocoi Archive of SID calculations, the reduction ratios of rod and ball mills were 6465 and 115, which show high ,

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Get PriceRod mills are less common than ball mills for grinding minerals The rods used in the mill, usually a high-carbon 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 [5]

Get PriceA convenient expression for the ratio is the Q value, which is equal to the perce nt wall reduction divided by the percent ID reduction A Q value of 2 or higher tends to smooth the ID surface When the schedule does not lend itself to a series of high-Q-value draws, it is better to use a high-Q-value rod draw followed by a hard sink rather ,

Get PriceHigh reduction ratio in a single stage The reduction range is between 1:5 and 1:100 It is possible to obtain the reduction ratio of 1:10,000 if two worm gear reducers are combined Less noise and vibration Worm gears generate less noise and vibration as mainly sliding contact occurs

Get PriceBillet mills, three-high, rolls from 24 to 32 inches in diameter, used for the further reduction of blooms down to 15x15-inch billets, being the nubpreparatory mills for the bar and rod; Beam mills, three-high, rolls from 28 to 36 inches in diameter, for the production ,

Get PriceSprings are produced from medium or high carbon steels with a very high yield strength obtained by heat treatment after processing Yield strength is the essential property of the elastic behaviour of the spring as it allows the part formed with these grades to return to its original shape after signiﬁcant bending or twisting

Get Pricerod mills with high reduction ratio (31 May 2012 ) Gulin supply Mining and construction equipment for mineral handling The crushing, screening, washing, grinding ,

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