### Understanding Motor and Gearbox Design 10 Steps (with

The drawing above shows a picture of a two stage elevator an element of a manipulator commonly found in FRC. The challenge is to design a gearbox that is capable of driving the 3 inch diameter winch and lifting the elevator to its maximum height of 84 inches high in a time of 1.5 seconds.

Chat Online### Application of Operating Work Indices in Autogenous

SAG and the ball mill circuits (JKMRC 1996). The phantom cyclone is used to classify the AG/SAG mill product into two products the phantom cyclone overflow that is similar to the final ball mill product and the phantom cyclone underflow is then used as an adjusted ball mill feed for the ball mill power calculation.

Chat Online### Calculation of Gear Dimensions KHK Gears

· Calculation of Gear Dimensions. Gear dimensions are determined in accordance with their specifications such as Module (m) Number of teeth (z) Pressureangle (α) and Profile shift coefficient (x). This section introduces the dimension calculations for spur gears helical gears gear rack bevel gears screw gears and worm gear pairs.

Chat Online### A discussion on the measurement of grinding media wear

· A material s susceptibility to wear depends on its physical and mechanical properties as well as on environmental factors i.e. the conditions to which the material is exposed .In other words the wear is a function of the tribosystem () which is made up of four elements body counterbody interfacial element and environment.The action of each one of these elements can vary as well as the

Chat Online### SAG Mill Power ModelGrinding Classification Circuits

· Generally it happens when you have coarse and/or hard ore going to the SAG mill its center of mass shifts to a new position and mill drive consume more power because of the extra torque generated. It can also result in to the overloading of SAG mill (also depends on other process variables).

Chat Online### Comparing strategies for grinding itabirite iron ores in

· Two-stage circuits presented consistently higher throughput than single-stage which is not a surprise given the higher installed power. Indeed SAB mill circuit throughput was 78 greater than the figure observed for single-stage SAG milling. Besides the throughput increase SSE and fSAG demonstrate the lower energy efficiency of the two

Chat Online### DEM modeling of ball mills with experimental validation

· Discrete element method simulations of a 1 5-scale laboratory ball mill are presented in this paper to study the influence of the contact parameters on the charge motion and the power draw. The position density limit is introduced as an efficient mathematical tool to describe and to compare the macroscopic charge motion in different scenarios i.a. with different values of the contact parameters.

Chat Online### Comparing strategies for grinding itabirite iron ores in

· Two-stage circuits presented consistently higher throughput than single-stage which is not a surprise given the higher installed power. Indeed SAB mill circuit throughput was 78 greater than the figure observed for single-stage SAG milling. Besides the throughput increase SSE and fSAG demonstrate the lower energy efficiency of the two

Chat Online### DEM modeling of ball mills with experimental validation

· Discrete element method simulations of a 1 5-scale laboratory ball mill are presented in this paper to study the influence of the contact parameters on the charge motion and the power draw. The position density limit is introduced as an efficient mathematical tool to describe and to compare the macroscopic charge motion in different scenarios i.a. with different values of the contact parameters.

Chat Online### Orway Mineral Consultants Canada Ltd. Mississauga ON

· The Bond equation is used to calculate ball mill specific energy from T 80 to the final product P 80 size. The total circuit specific energy is the sum of the SAG mill and ball mill specific energies. W SAG = R.(Ms 16000)/(Ms.447.3) (4) W T = K a.K b.W SAG. 10.BWi.(T 80-0..5).EF5 W BM.K BM (5) Where W SAG = SAG mill specific energy from F

Chat Online### USING THE SMC TEST® TO PREDICT COMMINUTION

· However in this situation the ball mill has to supply this energy and it has a different (higher) work index than the crusher (ie the ball mill is less energy efficient than a crusher and has to input more energy to do the same amount of size reduction). Hence from equation 7 to crush to the ball mill

Chat Online### Estimating Gear Fatigue Life Gear Solutions Magazine

· In this presentation the procedure and formulas to estimate a value of gear life expectancy for a high number of cycles is given. The procedure takes into account the pitting resistance (surface fatigue failure) and bending strength capacity (volumetric fatigue failure) of spur and helical gears. Formulas are based on the AGMA Standard 2105

Chat Online### Investigation on measuring the fill level of an industrial

· When the ball reaches the detachment point G as shown in Fig. 2 this ball will begin a parabolic movement.The intersection point (collision point) between this parabolic trajectory and the accumulation surface is point D (0 a b).The distance between the maximum vibration point on the mill shell and point D is the shortest among the distances between the mill shell and point D. Point B (0

Chat Online### Estimating Gear Fatigue Life Gear Solutions Magazine

· In this presentation the procedure and formulas to estimate a value of gear life expectancy for a high number of cycles is given. The procedure takes into account the pitting resistance (surface fatigue failure) and bending strength capacity (volumetric fatigue failure) of spur and helical gears. Formulas are based on the AGMA Standard 2105

Chat Online### Using modelling and simulation for the design of full

· TABLE 1 Summary of the mill survey conditions and Bond test results Diameter (m) Length (m) Fract. cr. speed Load fraction Ball size (ram) Feedrate (t/hr) Solids s.g. Mill Power (kW) Bond Wl (kWtYtonne) Scuddles 3.81 6.70 0.78 0.37 80/50 120 4.0 1240 11.7 MIM Cu- Concentrator 5.03 6.10 0.70 0.41 55 526 2.9 2540 17.6 OK Tedi Mill 1A Mill 1B Mill

Chat Online### Bond Work Index (Energy equation)Grinding

· To find the power at the mill pinion multiply an E value by the circuit solids feed rate (feed rate of dry solids to primary mill or the dry solids flow rate of product in the cyclone overflow). Power as kW = E (t/h dry solids) A ball mill can safely operate at 90 of

Chat Online### Two Stage Ball Mill Power Consumpation Calculation

Two Stage Grinding Of Cement In Ball Mill Praxis . Two stage ball mill power consumpation lasting can be described as the first stage of comminution carried out in the mine site in balls ball mills certain time and the power consumption alculate specific power consumption of a alculate specific power consumption of a ball millower consumption calculation for closed circuit ball.

Chat Online### Bond Efficiency-GMG-ICE-v1-r04 Determining

· use a rod mill F80 of 16 000 µm and a rod mill P80 of 1 000 µm. Note that—in order for no correction factor for ball mill product fineness to apply—the ball mill circuit P80 should be no less than approximately 70 µm (Bond 1962). This Bond Efficiency determination should not be applied to cir-

Chat Online### Using modelling and simulation for the design of full

· TABLE 1 Summary of the mill survey conditions and Bond test results Diameter (m) Length (m) Fract. cr. speed Load fraction Ball size (ram) Feedrate (t/hr) Solids s.g. Mill Power (kW) Bond Wl (kWtYtonne) Scuddles 3.81 6.70 0.78 0.37 80/50 120 4.0 1240 11.7 MIM Cu- Concentrator 5.03 6.10 0.70 0.41 55 526 2.9 2540 17.6 OK Tedi Mill 1A Mill 1B Mill

Chat Online### USING THE SMC TEST® TO PREDICT COMMINUTION

· However in this situation the ball mill has to supply this energy and it has a different (higher) work index than the crusher (ie the ball mill is less energy efficient than a crusher and has to input more energy to do the same amount of size reduction). Hence from equation 7 to crush to the ball mill

Chat Online### SMART MIRACLE MITSUBISHI MATERIALS CORPORATION

Smart Miracle end mills have been treated with a newly developed (Al Cr)N group coating which delivers substantially better wear resistance. The surface of the coating has been given a smoothening treatment resulting in better machined surfaces reduced cutting resistance and improved chip discharge. This is the next generation of coated end

Chat Online### A Method of C alculating Autogenous/ Semi-Autogenous

· mills with the rod mill and ball mill laboratory work indices. Note in Figure. 1 that the rod mill product slope is less than 0.5 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 ciency. Also the plotted rod mill P80 value as shown in Figure 1 is 2900

Chat Online### Tube MillsKHD International

· The mill with the compact drive version features an INTEGRAL DRIVE whose planetary gear is mounted to the mill flange. KHD Humboldt Wedag mills are the result of the most advanced calculation and simulation methods backed by years of experience. Worldwide we have designed and built more than 1 000 tube mills.

Chat Online### Investigation on measuring the fill level of an industrial

· When the ball reaches the detachment point G as shown in Fig. 2 this ball will begin a parabolic movement.The intersection point (collision point) between this parabolic trajectory and the accumulation surface is point D (0 a b).The distance between the maximum vibration point on the mill shell and point D is the shortest among the distances between the mill shell and point D. Point B (0

Chat Online### Motion Analysis in Tumbling Mills by the Discrete

motion of the charge inside a ball mill approxi mately. Once the charge motion was established re searchers took different approaches to predict the power draft of the mill. In one such ap proach certain assumptions were made with re gard to the dynamic charge the entire mill charge composed of a single mass whose profile

Chat Online### A discussion on the measurement of grinding media wear

· A material s susceptibility to wear depends on its physical and mechanical properties as well as on environmental factors i.e. the conditions to which the material is exposed .In other words the wear is a function of the tribosystem () which is made up of four elements body counterbody interfacial element and environment.The action of each one of these elements can vary as well as the

Chat Online### DEM modeling of ball mills with experimental validation

· Discrete element method simulations of a 1 5-scale laboratory ball mill are presented in this paper to study the influence of the contact parameters on the charge motion and the power draw. The position density limit is introduced as an efficient mathematical tool to describe and to compare the macroscopic charge motion in different scenarios i.a. with different values of the contact parameters.

Chat Online### Epicyclic Gearing A Handbook Gear Solutions Magazine

· Epicyclic gears consist of several components sun carrier planets and rings. The sun is the center gear meshing with the planets while the carrier houses the planet gear shaft. As the carrier rotates planets rotate on planet gear shafts while orbiting the sun. Finally the ring is the internal gear that meshes with the planets.

Chat Online### 4 Ways to Calculate Kilowatt HourswikiHow

· 3. Divide the result by 1 000. A kilowatt is equivalent to 1 000 watts so this step converts your answer from watt hours into kilowatt hours. Example You ve calculated that your fan uses 1250 watt hours of energy per day. (1250 watt hours / day) ÷ (1000 watts / 1 kilowatt) = 1.25 kilowatt hours per day.

Chat Online### Application of Operating Work Indices in Autogenous

SAG and the ball mill circuits (JKMRC 1996). The phantom cyclone is used to classify the AG/SAG mill product into two products the phantom cyclone overflow that is similar to the final ball mill product and the phantom cyclone underflow is then used as an adjusted ball mill feed for the ball mill power calculation.

Chat Online