Hand's OnЕхampleA grinding circuit is processing 450 t/h (of dry feed)with a mill drawing 3,150 kW. The circuit feed is 80%passing 2,500 um, and the circuit product is 80%passing 212 um. Calculate(a) The work input(b) Operating work index(c) The work input required to produce 80% passing250 um.

Answered: Image /qna-images/answer/cf2c9d8d-b3b3-4605-b6b6-2502825fd4ea.jpg

Ехample A grinding circuit is processing 450 t/h (of dry feed) with a mill drawing 3,150 kW. The circuit feed is 80% passing 2,500 µm, and the circuit product is 80% passing 212 um. Calculate (a) The work input

Ехample A grinding circuit is processing 450 t/h (of dry feed) with a mill drawing 3,150 kW. The circuit feed is 80% passing 2,500 µm, and the circuit product is 80% passing 212 um. Calculate (a) The work input

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Related questions

Q: Technician is turning (lathing) a work material with shear strength of 250 MPa as shown in Fig.1.…

Q: (b) During a certain machining experiment at the UCSI workshop, it is observed that temperature at…

A: (i). In a metal cutting process, Maximum heat is carried out by chip then tool and lastly by the…

Q: Consider a grinding operation which utilises the following process parameters: wheel speed of…

A: Note: Dear Student! As per our guidelines, we are only allowed to answer a single question. Kindly…

Q: A grinding ratio of 200 implies that the A. grinding wheel wears 200 times the volume of the…

A: Grinding ratio is defined as Volume of work material removed per wheel material removed. Grinding…

Q: Explain the difference between Open Structured and Dense Structured Grinding Wheels.

A: It is required to differentiate between open structure and dense structure grinding wheel

Q: Estimate the machining time that will be required to finish a vertical flat surface of length 100 mm…

A: Given Length = 100 mm Height = 20 mm Diameter = 32 mm Milling machine length = 60 mm Velocity = 30…

Q: Explain the difference between Open Structured and Dense Structured Grinding Wheels

A: Structure of a grinding wheel can be categorized as dense and open on the basis of the grain amount…

Q: ake a list about the process of Mechanical Grinding and another of Reactive Grinding, please be…

A: Grinding is an abrasive machining method that employs the use of a grinding wheel as the cutting…

Q: For a turning operation using a ceramic cutting tool, if the speed is increased by 25%, and constant…

A: given:Initial speed=Vdepth of cut=d=2.5 mmTool life=Tfeed=fn=0.5y=0.6

Q: Why are grinding operations necessary for parts that have been machined by other processes?

A: why are grinding operation necessary for parts that have been machined by other process?

Q: The diameter of a mild steel rod is to be reduced from 70 mm to 65 mm by plain turning in a single…

Q: Explain the difference between Open Structured and Dense Structured Grinding Wheels

A: The difference between Open structured and Dense structured for grinding wheels is as follows:…

Q: Explain why and how, in milling I and J are used in circular interpolation.

A: The milling machine is divided into XYZ axes. When a circular interpolation is the axis of the arc…

Q: The following data pertain to a vertical milling operation: 200 600 (L)* 30(W) * 25 (t) Diameter of…

Q: A 78 mm thick plate is to be milled down to a thickness of 60 mm using an 80 mm face milling cutter.…

A: The processing time required is 30.61625 min.

Q: For a turning operation using a ceramic cutting tool, if the speed is increased by 50%, by what…

A: Tool life is the time duration during which a tool can perform its action without any kind of…

Q: A through hole is drilled in an aluminum alloy plate of 15 mm thickness with a drill bit of diameter…

Q: 8) In AWJM, the mixing efficiency of both water and abrasives were maximum in

A: Answer is Multiple jets central feed nozzle.

Q: Explain the difference between Open Structured and Dense Structured Grinding Wheels

A: It is required to differentiate between open structure and dense structure grinding wheel

Q: Find the machining time, in seconds, and the rate of material removing in mm^3, sec for a turning…

A: Given, Diameter of the workpiece, D=80 mm=0.08 m Length, L=0.12 m Cutting speed, v=80 m/min Depth of…

Q: calculate the discharge voltage and the charging time (tc).

A: For solution refer below images.

Q: Suppose in a face milling operation, the dimensions of the workpiece are 5 inches by 10 inches. The…

Q: Assume that the energy cost for grinding an aluminum part with a specific energy requirement of 8 W-…

A: From the table for the specific energy requirement for the surfaces grinding table, the power…

Q: For a grinding process where, Wheel diameter=150 mm, and infeed=0.06 mm in a surface grinding…

A: Given data Wheel diameter (D) = 150 mm Wheel Speed(V) = 1600 m/min Work speed (v) = 0.3 m/s cross…

Q: A slab-milling operation is carried out on a 200 mm long, 80-mm-wide annealed mild-steel workpiece…

A: Given, Length of the workpiece, L=200 mm Width of the workpiece, W=80 mm Feed per tooth, ft =0.1…

Q: A single point cutting tool with 0°rake angle is used in an orthogonal machining process. At a…

Q: “Small grains are used for grinding hard work materials and large grains are used for grinding soft…

A: In the grinding process of hard material, the grain size of the abrasive material of the grinding…

Q: During a certain machining experiment at the UCSI workshop, it is observed that temperature at the…

Q: 1. Using a horizontal axis surface grinder, a flat surface of high strength steel sizing 150 mm×300…

Q: A flat milling operation will be carried out with a horizontal milling machine, in a piece of 250 mm…

A: Milling operation is the manufacturing technique that is done on a milling machine. In this…

Q: A slab-milling operation is being carried out on a block on a 200 mm-long, 150 mm-wide annealed mild…

Q: are the main causes of vibrations in machin

A: Vibration can indicate a problem and if left unchecked can cause damage or expedited deterioration.…

Q: A shaft of 0.5 m in length and 100cm in diameter is to be machined. What operation will you utilize…

A: Given Data⇒ Length of shaft (L1) =0.5 m Diameter (D1)=100 cm Final Dimensions Length of…

Q: Explain why the same grinding wheel may act soft or h

A: The same grinding wheel may act soft or hard which depending upon the material of the work piece and…

Q: A circular hole of 25 mm diameter and depth of 20 mm machined by EDM process. The material removal…

A: volume of metal to be removed = πd2h = π 252 20 = 39269.908 mm3

Q: A face milling operation is used to machine 6.0 mm from the top surface of a rectangular piece of…

Q: During a certain machining experiment at the UCSI workshop, it is observed that temperature at the…

Q: 4 i. Explain why the same grinding wheel may act soft or hard. ii. Why are grinding operations…

A: 1) - Grinding - grinding is material removal process , in which a spherical or cylindrical tool ,…

Q: What is a Turning Machine?

A: Turning: It is a material removal process with the help of single point cutting tool. In this…

Q: c) It is planned to carry out the grinding operation using a grinding wheel of diameter 15 cm and…

Q: A cylinder of 25 mm diameter and length is turned with a tool, for which the relation VTO 25 = 55 is…

A: Given:Diameter of cylinder, D=25 mmLength of the cylinder, L=100 mmVT0.25=55Cutting velocity, Vc=22…

Q: A slab milling operation is performed on the top surface of a tool-steel workpiece 450 mm long by…

Q: A slab-milling operation is being carried out on a 300 mm long, 100 mm wide annealed mild steel…

A: Given Data: Length L=300 mm wide b=100 mm feed…

Concept explainers

Forming and Shaping

Metal forming is a category of metalworking process through which the material can be given the desired shape and size by subjecting it to plastic deformation, where the component undergoes bulk deformation process upon application of loads. Unlike the shearing and machining process, the material does not undergo up to a failure point as indicated in the stress-strain curve. Hence, the stresses induced during the forming process are greater than yield strength but less than the failure strength of the material. The process does not lead to the loss of material, so it can be said to be an economical process. During forming, the material is subjected to tensile forces, compressive forces, bending, and shearing loading conditions. The material should possess the property of ductility to undergo the forming process.

Question

100%

Hand's On
Ехample
A grinding circuit is processing 450 t/h (of dry feed)
with a mill drawing 3,150 kW. The circuit feed is 80%
passing 2,500 um, and the circuit product is 80%
passing 212 um. Calculate
(a) The work input
(b) Operating work index
(c) The work input required to produce 80% passing
250 um.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

A slab milling operation is performed on the top surface of a tool-steel workpiece 450 mm long by 7.5 cm wide. The helical milling cutter, which has an 80 mm diameter and seven teeth, is set up to overhang the width of the part on both sides. Cutting speed is 4000 mm/min, feed is 0.015 cm/tooth, and depth of cut = 0.60 cm. Determine (a) the actual machining time to make one pass across the surface and (b) the maximum metal removal rate during the cut. (c) If an additional approach distance of 0.05 m is added at the beginning of the pass, and an overtravel distance at the end of the pass equal to the cutter radius plus 0.0115 cm, what is the duration of the feed motion
In a turning operation, cutting speed =200 m/min; feed = 0.25mm mm/rev, and depth of cut = 4.00mm Thermal diffusivity of the work material = 20m mm^2/s and volumetric specific heat =3.5(10^ -3 )J/mm^ 3 -C If the temperature increase above ambient temperature (20degreesC) is the angle measured by a tool-chip thermocouple to be 700degreesC, determine the specific energy for the work material in this operation.
Q :4i. Explain why the same grinding wheel may act soft or hard.ii. Why are grinding operations necessary for parts that have been machined by other processes?iii. Explain how the EDM process is capable of producing complex shapes.iv. Explain why the mechanical properties of workpiece materials are not significant in most of the processes described in Nontraditional Machining Processes
Make a list about the process of Mechanical Grinding and another of Reactive Grinding, please be clear in your writing (preferably in digital format) and consider all the corresponding steps
During a certain machining experiment at the UCSI workshop, it is observedthat temperature at the tool workpiece interface is 1200 oC at a cutting speed of300 mm/min with a feed rate of 0.002 mm/rev. (i) Analyse how the temperature will be affected if the cutting speed isincreased by 100 %.(ii) Determine the cutting speed necessary to achieve a maximum cuttingtemperature of 900 oC
Rod Mills, Ball Mills and Autogenous Mills are different types of tumbling mills used in the metalliferous industry. What equipment, if any, usually accompanies each of these mills in grinding circuits and why.
A slab-milling operation is being carried out on a 300 mm long, 100 mm wide annealed mild steelblock at a feed f=0,25 mm/tooth and a depth of cut d=3.0 mm. The cutter isD=50mm diameter, has 20 straight teeth, rotates at N=100rpm, U=3 W.S/mm3 and by definition is wider thanthe block to be machined. Calculate:a. Material Removalb. Estimate the power and torque required for this operationc. Calculate the cutting time
A slab-milling operation is carried out on a 200 mm long, 80-mm-wide annealed mild-steel workpiece having a feedrate of 0.1 mm/tooth and a depth of cut of 4.0 mm. The cutter of 50 mm diameter has 18 straight teeth and rotates at 135 rpm. The given specific energy for this material is 3.5 W s/mm3 and the slab mill is wider than the workpiece to be machined. Calculate:‧ the material-removal rate;‧ the power and torque required for this operation;‧ the cutting time. (243 mm/min, 77760 mm3/min, 4.5 kW, 52.8 s)
Assume that you have a machine shop consisting of a high-speed, strip-fed punch press producing the final product. The equipment only takes 25% of the production hall of your machine shop and has a generated noise level of 102 dBA when operating at an average of 280 strokes per minute. This equipment should work 16 hours per day. Following the provided information does the equipment noise level permissible for the device operator(s) working 6-8 hours daily in the production hall? If not, what possible solutions do you suggest to reduce the noise level of the device and make it possible to run the equipment for 16hours/day continuously? Note that the only modification to the equipment itself is applying a specific type of anti-vibration damping sheets which can lower the noise level maximum 7 dB.
Why is ideal mechanical advantage used when calculating the mechanical advantage of a compound machine? How is the actual mechanical advantage determined for a compound machine?
The average number of articles produced by two machines per day are 200 and 250 with S.D 20 and 25 respectively on the basis of records of 25 days production.Can you regard both the machines equally efficient at 1% level of significant?
For the following application, identify one or more nontraditional machining processes that might be used, and present arguments to support your selection. Assume that either the part geometry or the work material (or both) preclude the use of conventional machining. The application is a matrix of 0.1 mm (0.004 in) diameter holes in a plate of 3.2 mm (0.125 in) thick hardened tool steel. The matrix is rectangular, 75 by 125 mm (3.0 by 5.0 in) with the separation between holes in each direction = 1.6 mm ( 0.0625 in).