### GROSS POWER CALCULATOR - SMC Testing

AG/SAG mills in the data base are up to 40ft in diameter and ball mills are up to 26ft in diameter. The measured gross power draws from these mills are plotted against the model predictions in Figure 1. As indicated by this data base the accuracy of the model (1 standard deviation) is 4.6%. How to Use the Model . Inputs to the model are made in three windows, viz: Mill Type – available ...

Get Price### Impact Force Calculator - calculate the impact …

Using the impact force calculator. This versatile impact force calculator is useful for estimating the impact forces involved in collisions of different kinds. For example, it can be used to calculate the impact force of a vehicle (car, truck, train), plane, football, of birds hitting a plane or wind mill, as well as for falling bodies that crash into the ground.

Get Price### Using Fuzzy Control to Optimize SAG Mill Production

If the mill weight is dropping very quickly, then the speed should be decreased so as to maintain process stability. In general, either sound or bearing pressure can be used because of the tendency for the sound to increase when the bearing pressure is decreasing. MILL DENSITY CONTROL RULES The feed water addition to Sag mills is also a

Get Price### Modelling SAG milling power and specific energy ...

Fig. 1. SABC A/B milling circuit. Scw = solid concentration by weight fraction in the SAG mill feed; Jb = balls charge (bulk fraction of the SAG mill volume); N/Nc = fraction of the SAG mill critical speed; Pc = SAG mill power consumption (kW); % 600 +100 = % of the fresh feed in the size range 152 +25 mm.

Get Price### Impact Force Calculator - calculate the impact …

Using the impact force calculator. This versatile impact force calculator is useful for estimating the impact forces involved in collisions of different kinds. For example, it can be used to calculate the impact force of a vehicle (car, truck, train), plane, football, of birds hitting a plane or wind mill, as well as for falling bodies that crash into the ground.

Get Price### Impact Force Calculator - calculate the impact …

Using the impact force calculator. This versatile impact force calculator is useful for estimating the impact forces involved in collisions of different kinds. For example, it can be used to calculate the impact force of a vehicle (car, truck, train), plane, football, of birds hitting a plane or wind mill, as well as for falling bodies that crash into the ground.

Get Price### Online calculator: Pressure for given weight and …

This online calculator computes pressure in gravity field for given weight and surface area. Results are shown in different pressure units. Results are shown in different pressure units. person_outline Timur schedule 2012-04-05 07:06:30

Get Price### Metal Weight Calculator - Round, Square, …

Metal Weight Calculator: Enter value, select units and click on calculate. Result will be displayed. Enter your values: Material: Shape: Quantity: ...

Get Price### Simple Calculations for Cable Pulling | EC&M

Sidewall bearing pressure; Now, let's see how these factors apply in a sample pulling tension calculation. Fig. 1. Diagram of proposed 15kV feeder installation. Sample power feeder installation. Suppose you're involved in a design/build project for a paper mill and your client needs a 400A, 15kV feeder to run as shown in Fig. 1 (right). The client has required all feeders on the site to be ...

Get Price### Mill (grinding) - Wikipedia

SAG is an acronym for semi-autogenous grinding. SAG mills are autogenous mills that also use grinding balls like a ball mill. A SAG mill is usually a primary or first stage grinder. SAG mills use a ball charge of 8 to 21%. The largest SAG mill is 42' (12.8m) in diameter, powered by a 28 MW (38,000 HP) motor.

Get Price### 6. Bearing Load Calculation - Welcome to NTN Bearing

Bearing Load Calculation 6.1 Loads acting on shafts To compute bearing loads, the forces which act on the shaft being supported by the bearing must be determined. These forces include the inherent dead weight of the rotating body (the weight of the shafts and components themselves), loads generated by the working forces of the machine, and loads arising from transmitted power. It is possible ...

Get Price### SHEAVE DESIGN MANUAL - NYLATECH

Reducing the weight can ease installation as well as increase the carrying capacity of a boom style crane. The minimum thickness of the web area is calculated as: W=1.2r W = Web thickness r = rope diameter The transition between the web and the rim should either be a radius or a slope to avoid sharp angles. 800.506.9566 S G r T Dg A w 30º 35º 40º 45º ¼ + 2.99r ¼ + 3.18r ...

Get Price### A Method to Determine the Ball Filling, in Miduk Copper ...

Concentrator SAG Mill Ali Kamali Moaveni1, Mohammad Noaparast2*and Bahram Rezai3 ... complementing the typical bearing pressure measurement and contributing to the process control quality. The method can of course be applied for any kind of synchronous mill motor [4]. 16 I.J.M.G.E., University of Tehran, Vol. 46, No. 1, June 2012 As a result, ball filling strongly affects on grinding rate ...

Get Price### SAG Mill Components

Once the basic operating conditions have been defined for the mill designer then, and only then, can he begin taking into account shell and head stresses and trunnion bearing sizes required to carry the load and to give the required openings for feeding and discharging the mills. Mill heads are key structural components of any grinding mill. They must carry the load of the shell assembly ...

Get Price### The Selection and Design of Mill Liners - MillTraj

Mines (WA) 36ft SAG mill the number of Outer Head Liners was reduced from 36 to 18 pieces and in doing so reduced the time to replace them by 9 hours at a cost downtime saving of about U$25,000 per hour. In this case the liners sections are 3.5 t each. For smaller mills the liners have to be handled and installed manually, so smaller blocks with removable lifter bars are generally favoured ...

Get Price### Axle load calculations - Scania Group

optimisation, which is an aid to axle weight calculations. Example of result from an axle weight calculation: Front Rear Total Chassis weight 6 445 2 585 9 030 Extra weight 0 0 0 Bodywork weight 1 146 3 404 4 550 Weight 1-4 0 0 0 Bodywork equipment 2 135 -135 2 000 Kerb weight 9 726 5 854 15 580 Load 0 3 885 11 535 15 420 Load 1–4 0 0 0

Get Price### Bearing Life Calculation - Bearing Loads & Speeds ...

Bearing Rating Life Calculation "Rating life" is the bearing life calculated for 90% reliability. This is the amount of time that a group of apparently identical bearings will complete or exceed before the formation of a fatigue spall. The basic formula for calculating bearing L 10 rating life is: where: C = Dynamic Capacity (dN or Lbs)

Get Price### SAG Mill Components

Once the basic operating conditions have been defined for the mill designer then, and only then, can he begin taking into account shell and head stresses and trunnion bearing sizes required to carry the load and to give the required openings for feeding and discharging the mills. Mill heads are key structural components of any grinding mill. They must carry the load of the shell assembly ...

Get Price### Online calculator: Pressure for given weight and …

This online calculator computes pressure in gravity field for given weight and surface area. Results are shown in different pressure units. Results are shown in different pressure units. person_outline Timur schedule 2012-04-05 07:06:30

Get Price### TECHNICAL NOTES 8 GRINDING R. P. King

LG A mill power equation for SAG mills. Minerals and Metallurgical Processing. Feb 1990 pp57-62. Gross power No load power Net power drawn by the charge (8.13) The net power is calculated from Net power KD2.5L e! c./ Watts (8.14) In equation 8.14, D is the diameter inside the mill liners and Le is the effective length of the mill including the conical ends. ! c is the specific gravity of the ...

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