## Ball Mills vs Rod Mills

Jul 03, 2017 · The voids (or interstitial space) within a rod load are approximately half those in a ball mill grinding load. Rods in place weigh approximately 400 pounds per cu. ft. and balls in place approximately 300 pounds per cu. ft.. Thus, quantitatively, less material can progress through the voids in the rod mill grinding media than in the ball mill ...

## why the ball mill is efficient than the rod mill

Ball Mills. Within these limits a rod mill is usually superior to and more efficient than a ball mill The basic principle for rod grinding is. Live Chat. Rod Mill, put to the test and may require more than one rehabilitation before being turned off ", A rod mill is a piece of mining equipment that manufacturers use to break, the machines to ...

## What are the differences between ball mill and rod mill ...

Nov 14, 2019 · Ball mill and rod mill are suitable for different materials. 1. Selection by material's hardness. Ball mill has a strong adaptation of material, and it is suitable for grinding hard materials, such as slag, iron ore, copper ore, etc. Rod mill is suitable for grinding brittle material, such as rare metals. 2.

## why the ball mill is efficient than the rod mill

Dec 30, 2012· Ball mills,rod mills,flour mill,tube mills,ceramic ball mills,rod mills are both excellent mining machines for grinding ores into fine powders and particl , Rod milling within the size range utilized is more efficient than ball milling because the specified method is obtained better value per ton.

## Why The Ball Mill Is Efficient Than The Rod Mill -ball Mill

Why The Ball Mill Is Efficient Than The Rod Mill . Capacity:1-1000t/h Pdf effect of circulating load and classification pdf effect of circulating load and classification The ball mill is the most common ore grinding technology today and probably more than 50 of the total world energy consumption for ore grinding is consumed in ball mills, why the ball mill is efficient than the rod mill

## Ball Mill vs Rod Mill | How To Choose Ball Mill or Rod ...

The power consumption of the ball mill is slightly higher than that of the rod mill, and the wear rate is also higher than that of the rod mill. The daily maintenance requires constant addition of a certain amount of steel balls, while the rod mill only needs to

## why the ball mill is efficient than the rod mill

Dec 30, 2012· Ball mills,rod mills,flour mill,tube mills,ceramic ball mills,rod mills are both excellent mining machines for grinding ores into fine powders and particl , Rod milling within the size range utilized is more efficient than ball milling because the specified method is obtained better value per ton.

## The difference between ball mill and rod mill - Fodamon ...

Analysis of grinding mediaRod mills commonly use steel rods with a diameter of 50-100mm as the grinding medium, while ball mills use steel balls as the grinding medium. The difference in the grinding body is the main difference between the two. The steel balls of ball mill are point contact and the steel bars of bar mill are line contact, so ...

## Ball Mills - Mineral Processing & Metallurgy

Feb 13, 2017 · Difference Between Ball Mill and Rod Mill Rod Mills. The principal field of rod mill usage is the preparation of products in the 5 mm—0.4 mm (4 mesh to 35 mesh) range. It may sometimes be recommended also for finer grinding. Within these limits a rod mill is usually superior to and more efficient than a ball mill.

## why the ball mill is efficient than the rod mill

The rod mill usually uses 50100mm diameter steel rod as grinding medium, while the ball mill uses steel ball as grinding medium The length of steel rod is 2550mm shorter than the cylinder, and it is usually made of high carbon steel with carbon content of 08% 1%; the loading capacity of rod is about 35% 45% of the effective volume of rod mill

## Rod Mills - 911Metallurgist

A rod mill uses steel rods as the grinding media in tumbling mills is an efficient means to feed ball mills a product finer than could be made in a crusher but coarser than could be made in a ball mill. The principal use for rod mills, which were invented to make ball mill feed in a wet-grinding rod mill-ball mill circuit. Rod mills came into use in the United States beginning in 1900s and ...

## Rod Mills - Mineral Processing & Metallurgy

May 31, 2016 · These mills may be divided into three types ROD MILLS, BALL MILLS and AUTOGENOUS MILLS. In the first type, the ROD MILL, the ore is introduced into the mill. Before we get to the operating skills and theories needed to operate this machine let’s go over the construction of it. If we cut a mill in half and examine the construction of a rod ...

## Flow of materials in rod mills as compared to ball mills ...

Jan 25, 2012 · In rod mills, the axial dispersion is lower—close to plug flow (Lynch, 1977)—as well as selective breakage (compared with ball mills) produce a narrower size distribution product than that of ball mills. These findings, in addition to other differences related to the nature of particle breakage in ball mills and in rod mills, explain why in ...

## Why Operating Speed Of Ball Mill Is Less Than Its Critical ...

Rod mills operate at lower speed than ball mills since the rods are rolled and not cascaded. For an equivalent grind, a rod mill uses less steel than a ball mill because of the lower speed and better contact between ... The Critical Speed is used for the determination of ball

## How to Measure Grinding Efficiency

Apr 20, 2018 · The power per tonne for rod milling is determined from the rod mill feed rate and the power per tonne for ball milling is determined from the ball mill feed rate. Note the efficiency factor of 1.22 lines up with the 1.2 factor recommended for selecting rod mills for rod milling circuit when feed is produced with closed circuit crushing.

## SAG mill VS Ball & Rod Mill - Crushing, Screening ...

Also since SAG (semi-autogenous grinding) uses less media than a comparable rod or even ball mill. While less efficient in actual grinding SAG mills are lower capital and operating cost per unit ground, especially at large particle sizes.

## Differences between Ball Mill and Rod Mill – Luoyang Dahua

Apr 28, 2021 · Rod mills usually use steel rods with a diameter of 50-100mm as grinding media, while ball mills use steel balls as grinding media. The difference in grinding bodies is the main difference between the two. The steel balls of the ball mill are in point contact, and the steel rods of the rod mill are in line contact, so the working ...

## What is a ball mill manufacturer in China? - Quora

Answer: Ball Mill Manufacturer The ball mill is an efficient equipment to grind many kinds of mine and other materials, or to select the mine. It's widely used in powder-making production line. Our ball mill is designed with long life, excellent performance and minimum maintenance. Our ball mil...

## High Efficient Rod Mill

High Efficient Rod Mill. High Efficiency Automatic Rod Mill. The ball mill is a tumbling mill that uses steel balls as the grinding media. The length of the cylindrical shell is usually 11.5 times the shell diameter Figure 8.11.The feed can be dry with less than 3 moisture to minimie ball coating or

## Ball Mill VS Rod Mill - Xinhai

Apr 07, 2016 · For ball mill, the grinding force of steel ball to ore is less than the impact, because the contact area is small between balls and mineral. Thus, the throwing motion of ball can produce a large impact, but it need a high rotate speed and has a higher power consumption. But for rod mill, grinding effect is better which need a lower rotate speed ...

## Difference between Rod Mill and Ball Mill Essay - 376 Words

Nov 05, 2013 · The product particle size of rod mill is more uniform than that of ball mill; however, the product granularity of ball mill is smaller and finer. The particle size distribution accumulation of ball mill is more efficient than rod mill. Besides, the wear rate of rod is lower than the ball, for ball mill in routine attention it needs add a ...

## Differences Between Ball Mill and Rod Mill - Xinhai

Nov 24, 2017 · 1. Ball mill and rod mill are used to deal with various hardness of ore, rock and other materials whose particle size is not more than 60mm. The particle size range is 1.5mm and 1.5mm after treated with ball mill, otherwise, the particle size range is below 6mm and 6mm after treated with rod mill. 2. Ball mill and rod mill are distinguished ...

## Essa laboratory ball and rod mills - FLSmidth

Use them to mill soft, hard, brittle and fibrous materials, either in a wet or dry state. With slightly larger barrel volumes than the Essa ball mill series, rod mills are ideal for larger and more coarse materials. Rod charges and an acoustic safety enclosure for the rotating barrel are supplied as standard.

## Rod mills, how they function - Mine Engineer.Com

For an equivalent grind, a rod mill uses less steel than a ball mill because of the lower speed and better contact between the media and ore. The rod charge must be maintained in good working condition, and broken and worn rods must be removed. Rod mills usually require greater operator attention. It is important that the rods stay essentially ...

## Efficient Ball Mills

Ball mills.Efficient than a ball mill.The basic principle for rod grinding is reduction by line contact between rods extending the full length of the mill,.Live chat.Drum mill rod mill tm 300 xl retsch.The drum mill can be operated either as a ball or as a rod mill by using the.A sufficient number of balls or rods is required for an. Get Price

## Highly Efficient Rod Mill

Highly Efficient Rod Mill Fote Machineryftm. 1 The rod mill usually uses a steel rod with a diameter of 50100 mm as a grinding medium The length of the steel rod is 2550 mm shorter than that of the cylinder and is usually made of high carbon steel containing 081 carbon The loading amount of the rod is about 3545 of the effective volume of the rod mill

## 05 to 50 TPH Industrial Rod Mills

good ball mill tph capacity. A rod mill uses steel rods as the grinding media in tumbling mills is an efficient means to feed ball mills a product finer than could be made in a crusher but coarser than could be made in a ball mill The principal use for rod mills which were invented to make ball mill feed in a wetgrinding rod millball mill circuit Rod mills came into use in the United States ...

## Buy Unused Grinding Equipment - Grinding Mills, Crushers ...

Rod mills are very similar to ball mills but instead of using grinding balls they use long steel rods to do the media grinding. Some miners believe that rod mills are more efficient than ball mills and that the desired product result is obtained at a lower cost per ton.

## Why HPGRs did not make the list? - LinkedIn

Dec 06, 2017 · The size range treated by SAG milling, from 150 mm down to 2 mm, is all "easy to break" according this metric, and it is the ball mills that will have difficulty treating this ore (not the SAG mill).

## Efficient Ball Mills

Efficient Ball Mills. FOB Reference Price: Get Latest Price Efficient fine ball mills in.Fine grinding in a horizontal ball mill sciencedirect while stirred media mills have shown to be more energy efficient than ball mills for ultrafine grinding 25 m product size they still have limitations one such limitation is the size of the mills available and hence the low throughput achievable ...

## Ball Mill Explained - saVRee

If a ball mill uses water during grinding, it is a ‘wet’ mill. A typical ball mill will have a drum length that is 1 or 1.5 times the drum diameter. Ball mills with a drum length to diameter ratio greater than 1.5 are referred to as tube mills. Ball mills may be primary or secondary grinders.

## Mill Charge - an overview | ScienceDirect Topics

The size of feed particles to a rod mill is coarser than for a ball mill. The usual feed size ranges from 6 to 25 mm. For the efficient use of rods it is necessary that they operate parallel to the central axis and the body of the mill.

## Mill Speed - Critical Speed - Paul O. Abbe

Mill Speed . No matter how large or small a mill, ball mill, ceramic lined mill, pebble mill, jar mill or laboratory jar rolling mill, its rotational speed is important to proper and efficient mill operation. Too low a speed and little energy is imparted on the product.