ball mill question

BALL MILL DRIVE MOTOR CHOICES

The mill used for this comparison is a 4.4-meter diameter by 13.6 meter long ball mill with a 5000 HP drive motor. It is designed for approximately 90 s.ton per hour. This type two-compartment mill is a state- of-the-art shell supported cement finish mill. The torque and time requirements of the mill with the ball

Ball Mill

Ball mills are among the most variable and effective tools when it comes to size reduction of hard, brittle or fibrous materials. The variety of grinding modes, usable volumes and available grinding tool materials make ball mills the perfect match for a vast range of applications. Cooling, heating & cryogenic grinding.

243 questions with answers in BALL MILLING

Question. 2 answers. Sep 15, 2023. if a 5gm of copper selenide in grinded to nanoparticles by a planetary ball mill by 550rpm, 250 ml cylinder, 50 balls (10mm diameter), with ball to powder ratio ...

Ball Mill Advantages

Mechanical Operations Questions and Answers – Advantages of Ball Mill. This set of Mechanical Operations Multiple Choice Questions & Answers (MCQs) focuses on "Advantages Of Ball Mill". 1. ____ is an open container usually cylindrical with uniform openings. a) Bowel. b) Screen.

Ball Mills Manufacturer

Applying steel balls as grinding media, our ball mills or ball grinding machines are widely applied in mining, construction, and aggregate applications. Since 1985, JXSC has been a leading ball mill manufacturer, providing premium services, from R&D and production to installation and free operation training. Inquiry Now.

Mechanical Operations Questions and Answers

10. Which of the following is the capacity of a roll crusher? a) 1 to 50 T/hr. b) 3 to 120 T/hr. c) 4 to 120 T/hr. d) 5 to 100 T/hr. View Answer. Sanfoundry Global Education & Learning Series – Mechanical Operations. To practice all areas of Mechanical Operations, here is complete set of 1000+ Multiple Choice Questions and Answers.

Ball Mill (Ball Mills Explained)

Crushed ore is fed to the ball mill through the inlet; a scoop (small screw conveyor) ensures the feed is constant. For both wet and dry ball mills, the ball mill is charged to approximately 33% with balls (range 30-45%). Pulp (crushed ore and water) fills another 15% of the drum's volume so that the total volume of the drum is 50% charged.

Difference Between Sag Mill vs Ball Mill

1. SAG mill is the primary tool for grinding. SAG mill is used before the other mills. Ball mill is a secondary, and it is used after the SAG mill. 2. SAG mill breaks the raw material into pieces for the further grinding. Ball mill is used to grind the pieces of raw material into. powder-like structures. 3.

Ball Mill

The ball mill contains a hollow cylindrical shell that rotates about its axis. This cylinder is filled with balls that are made of stainless steel or rubber to the material contained in it. …

Solved The operating data for a ball mill is summarized

Question: The operating data for a ball mill is summarized: Mill dimensions (inside liners) Mill speed Pulp density Total solids exiting mill Solids (ore) specific gravity Steel ball charge Density of steel ball Steel void space - 1.6m (diameter) by 3.2m 25 rpm = = = = 84% solids 40 tph (dry) 2.8 43% 7.8 t/m³ 39% (a) Express the mill speed as a percentage of the

Mechanical Operations Questions and Answers – Ball Mill

Mechanical Operations Questions and Answers – Ball Mill. This set of Mechanical Operations Multiple Choice Questions & Answers (MCQs) focuses on "Ball Mill". 1. What is the average particle size of ultra-fine grinders? a) 1 to 20 µm. b) 4 to 10 µm. c) 5 to …

Solved Question 2: 193tph of ore is fed to a ball mill

Mechanical Engineering questions and answers. Question 2: 193tph of ore is fed to a ball mill circuit with ball mill discharge reporting to hydrocylones. The production rate of underflow is 807tph. The size distribution of the cyclone feed, overflow and underflow are presented in the following tabletable [ [Size, μm,Cumulative passing ...

Mechanical Operations Questions and Answers

Mechanical Operations Questions and Answers – Action of Tumbling Mill. This set of Mechanical Operations Interview Questions and Answers for freshers focuses on "Action of Tumbling Mill". 1. Which of the following is a standard screen? a) Treybal screen. b) Tyler screen. c) McCabe screen. d) Camp screen. View Answer.

243 questions with answers in BALL MILLING

Ball Milling - Science topic. Explore the latest questions and answers in Ball Milling, and find Ball Milling experts. Questions (243) Publications (30,233) Questions related to...

10 questions with answers in BALLMILLING | Science …

4 answers. Mar 15, 2022. I am working on ceramic resins. I First mixed the ceramic with surfactant and a solvent. Ballmilled for 1 hours. To facilitate chemisoprtion i kept the …

Size Reduction Questions and Answers

Explanation: In ball mills, product is released by the gravitational pull and drop to the bottom and the centrifugal force keeps the ball in contact with the mill wall. ... If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected] « Prev - Food Processing Unit Operations Questions and Answers ...

Ball mill JARS

Posted October 26, 2020. The formula for critical RPM is 265.35/sqrt (mill ID - media diameter). Both the ID and diameter are in inches. This is the RPM that media will stick to the walls of the jar. Typically, we shoot for about 65% of that value. For that particular jar with 1/2" media, you'd want to shoot for about 67rpm. Before you all tell ...

Ball mill

Anyway it's a triple jar ball mill, each jar is about 1.3liters in volume so at full capacity it should churn out 600-700grams of high quality BP in a couple of hours. The motor was salvaged from a lathe and it has 400W power which is more than enough to rotate the three jars at 100RPM

Mechanical Operations Questions and Answers – Crushers

Explanation: If the mill is charged with heavy balls, the product will be finer, the weight can be increased or the number if ball can also be increased. 3. As the size of ball increase, the size of product ____

Solved Question 3 A ball mill operating at a feed rate of

Question 3 A ball mill operating at a feed rate of 108 ton h −1,consumes 10kw power for reducing size of mineral particles from 3.92mm to 1.25mm. If Bond's law holds good, at which rate the minerals will be fed in the ball mill to produce products of 0.75mm at the same power consumption. Round off the feed rate at two decimal places.

Can you Ball Mill Magnesium?

March 26, 2007. Pwdering magnesium or aluminum by ball mill is a real pain, but 50/50 magnalium alloy can be powdered with ease as it is extremely brittle and crumbles in rather mild conditions. Smaller batches can be ground to size by a mortar and pestle. 3 years later... September 17, 2010.

A good alternative for ball mill

As far as a "good" alternative, there really are none. In no way shape or form should you use the coffee grinder to grind live materials. Unless you have a wheel mill, or whatever they are using at the military plant in Indiana, all …

Food Engineering Questions and Answers

a) Enhanced heat/mass transfer. b) Intimate contact with certain food items. c) Enhanced heat/mass transfer & intimate contact with certain food items. d) None of the mentioned. View Answer. 2. Statement 1: Dispersion of one immiscible liquid into another also involves size reduction. Statement 2: Leaching requires size reduction.

A ball mill, 1.2m in diameter, is operated at 0.80Hz, and it is …

Operating a ball mill involves various parameters that can affect its performance and efficiency. If a 1.2-meter diameter ball mill is not working properly when operated at 0.80 Hz, several modifications in the conditions of operation could be suggested to address the issue. ... 2500 N Question no.8: 9) The resultant of four vertical forces is ...

Solved Samples of rod mill discharge (RMD) and cyclone

Question: Samples of rod mill discharge (RMD) and cyclone overflow (COF) were taken from the grinding circuit of a Pb sulphide ore processing plant (note sampling points 1 & 2 as marked below). Cyclones are operated in closed circuit with the ball mill. The following data show the results of particle size analysis for each sample along with Pb ...

Sciencemadness Discussion Board

Sciencemadness Discussion Board » Special Topics » Energetic Materials » ball mill question

Author: Subject: Ball Mill questions

Subject: Ball Mill questions: elementcollector1. International Hazard. Posts: 2684 Registered: 28-12-2011 Location: The Known Universe Member Is Offline Mood: Molten posted on 23-10-2012 at 14:58: Ball Mill questions Before you asked, yes, I did UTFSE. Not much out of it. So, I'll bring the topic up here.

How can I determine the best RPM and balls to powder ratio for wet Ball

Suppose after weighing the solvent you get 100 gm (solvent), now you can divide by 3 i.e., 33.3 gm of powder, 33.3 gm of solvent and 33.3 gm of grinding media...If you feel the quantiy of grinding ...

SOLVED: The critical speed of a ball mill in rpm, whose

VIDEO ANSWER: We need to know the critical speed of the ball in rpm. A rotation per minute. The critical speed is equal to 1 by 2 pi root of g divided by R and small r. The ball was in motion. The diameter of the ball mill will be equal to the

Ball Mill | SpringerLink

Xu Kuangdi. 19 Accesses. Download reference work entry PDF. Ball mill is a type of grinding equipment that uses the rotary cylinder to bring the grinding medium …