The relative capacity of a closed ball mill circuit as function of circulating load was calculated for three different classification arrangements: 1. cyclones with 38% of fine material reporting (bypass) to coarse product (cyclone underflow), 2. screens with 20% of fine material reporting to coarse product (screen oversize), 3.
Product Size: All passing 6 mesh with 80% passing 20 mesh. Net power from pilot plant: KWH/ST. Mill, gear and pinion friction multiplier: Mill Power required at pinionshaft = (240 x x ) ÷ = 5440 Hp. Speed reducer efficiency: 98%. 5440 Hp ÷ = 5550 HP (required minimum motor output power).
Mill size x (′ x 20′ with a ID of 16′). ... This shows the difference in power per ton of mill circuit feed consumed without taking into account the variations in mill circuit feed, mill circuit product and grindabilities as shown in data tabulated in Table III. ... Ball mill size x (″ x 16′ diameter ...
You need a twostage solution, first stage opencircuit mill and then second stage closedcircuit mill. First stage, will be broken into two parts as well, you use a Bond rod mill work index for the coarse component of the ore (+ mm) and the Bond ball mill work index for the fine component ( mm).
• The ball mill may be used with an inert atmosphere and therefore can be used for the grinding of explosive materials. ... diameter of in and discharge a product of diameter in. the power required to crush 12 tons per hr is hp. What should be the power required if the capacity is reduced to 10 ton per hr and as a consequence of ...
The mill used for this comparison is a diameter by meter long ball mill with a 5000 HP drive motor. It is designed for approximately 90 per hour. This type twocompartment mill is a state oftheart shell supported cement finish mill. The torque and time requirements of the mill with the ball
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A ball mill of m diameter is being run at N = 50 rpm. ... The work index for limestone is kWhr /ton. (Answer: HP) Answer : HP ) 19. ... 20. What should be the diameter of the set of rolls to take the feed size of 4 cm and crushed into mm, ...
Type of other Mill (Tube Mills) BALL TUBE MILL The Ball Tube Mill is basically horizontal cylindrical tube rotating at low speed on its axis, whose length is slightly more to its diameter. The inside of the Cylinder shell is fitted with heavy cast liners and is filled with cast or forged balls for grinding, to approximately 1/3 of the diameter.
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C E Bowl Mills Coal Troubleshooting raymond bowl mill classifier 1003 16, mill : mill hp 1103 of alstom grinding mill coal mill pulverizer in thermal power plants Author Stream 9 Nov 2012 CE. coal ball mill maintenance coal ball mill maintenance coal ball mill Of ...
The following four gridtype ball mill models are recommended to meet the daily production demand of 1500 tons: MQGg2740: Diameter: Length: 4m. Motor Power: 380kW. Processing Capacity: ...
Production Capacity: 10 Ton. Capacity: 10 ton/day. Automation Grade: Automatic. Kraft paper mill machines include the kraft fibre line system to manufacture pulp from wood fibres or
20. Ei the work index ... is defined as the gross energy required in KWH per ton of feed to reduce a very large feed to such a size that 80% of the product passes a 100 µm screen C = 5Ei qL EE i 1 1 100 2 In all these equations the particle sizes are defined as ... SOLUTION The critical speed of the ball mill is: The actual speed of the ball ...
From the ball mill discharge size distribution calculate the %+75 μ as: 100 % = % +75 μ. 3. Calculate the CSE as the average: ( + ) ÷ 2 = % + 75 μ. In this example the ball mill circuit classification system efficiency is per cent at 75 μs. This means that
21 CONCLUSIONS Continued In the present work, equations were also derived, giving: zthe ballmill power drawP as a function of its dimensions: internal mill diameter D and length L, zthe ballmill power drawP as a function of the feed D f (mm) and the product size d (mm), the Bond work index w i (kWh/short ton) and the mill throughput T (short ton/h), zthe ballmill dimensions (D and L), when ...
DOVE small Ball Mills designed for laboratories ball milling process are supplied in 4 models, capacity range of (200g/h1000 g/h). For small to large scale operations, DOVE Ball Mills are supplied in 17 models, capacity range of ( TPH 80 TPH). With over 50 years experience in Grinding Mill Machine fabrication, DOVE Ball Mills as ...
The regrinding mills in this 500ton test plant consisted of 10ft. by 28in., 8ft. by 36in., 8ft. by 44in., 8ft. by 72in. Hardinge mills and a 6 by 20ft. Chalmers Williams tubemill. These mills were equipped with pebbles as a grinding medium. ... The ballmill floor in this plant is equipped with a traveling crane capable of picking ...
The approximate horsepower HP of a mill can be calculated from the following equation: HP = (W) (C) (Sin a) (2π) (N)/ 33000. where: W = weight of charge. C = distance of centre of gravity or ...
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