### brief comments on ball mill energy consumption

Compared with ball mill it saves energy consumption by 30% 40%. ⑵ Less wear and tear: As the roller is not in direct contact with the disc and material of the roller and liner is high quality so life lime is long. 3. High Drying Ability. As the hot air inside contacts directly with the

Chat Online### Ball Mill Design/Power Calculation

08/04/2018· If P is less than 80% passing 70 microns, power consumption will be; Ball Mill Power Calculation Example #1. A wet grinding ball mill in closed circuit is to be fed 100 TPH of a material with a work index of 15 and a size distribution of 80% passing ¼ inch (6350 microns). The required product size distribution is to be 80% passing 100 mesh (149 microns). In order to determine the power

Chat Online### Ball Mill an overview ScienceDirect Topics

A feature of ball mills is their high specific energy consumption; a mill filled with balls, working idle, consumes approximately as much energy as at full-scale capacity, i.e. during grinding of material. Therefore, it is most disadvantageous to use a ball mill at less than full capacity.

Chat Online### The effect of processing parameters on energy consumption

grinding media (steel balls) on power requirements and energy consumption of a ball mill. With constant mass of the steel balls (20, 30 and 40 kg), the agitator shaft speed was increased from 10 to 100% of the maximum speed, which corresponds to a speed of 50 rpm. The power consumption (W) was recorded upon which milling energy consumption

Chat Online### how to calculate the energy consumption of a ball mill

Application of SPI for Modeling energy consumption in Thus, the ball mill consumes 12.89 kWh/t, more energy than the SAG mill in producing the final product. . a Starkey mill was used to measure SAG mill power. Read more. UBC MINE331 Lecture Notes SAGMILLING.COM. 4 Oct 2013 mill sizes, or to reliably estimate the specific energy when either a feed or . reduction in ball mill

Chat Online### The operating principle of the ball mill

Energy consumption for ball mills is a function of many factors: the physical properties of the ground material — its specific gravity and hardness; the degree of drum filling by grinding balls; the number of drum rotations, etc. Ball mills have low efficiency — no more than 15%. Energy is mainly consumed on the wear of grinding balls and mill housing, friction; heating the material etc

Chat Online### Factors determine the size of ball mill energy consumption

17/12/2013· Factors determine the size of ball mill energy consumption. 17 Tuesday Dec 2013. Posted by zhuli156176 in Uncategorized ≈ Leave a comment. Fote company is the production of a full set of energy-saving beneficiation mill manufacturers. lime mill power consumption are influenced by many factors, such as ball mill processing precision degree, transmission efficiency, safe operation

Chat Online### The effect of processing parameters on energy

grinding media (steel balls) on power requirements and energy consumption of a ball mill. With constant mass of the steel balls (20, 30 and 40 kg), the agitator shaft speed was

Chat Online### Energy Consumption in Mining Comminution ScienceDirect

01/01/2016· Mills usually have motors in the following range: SAG mill motor: 7,435 kW or an HPGR circuit with motors: Ball mill 1 (4,015 kW) and Ball mill 2 (4,152 kW) for a porphyry copper- molybdenum mine. Comparing mill operations for both open pit mining to underground mining, where the metal is separated from rock ore containing the metal mined, both open pit and underground mining have the same energy needs, in kWh/tonne. Although SAG mills and Ball mills

Chat Online### Energy Analysis in Turning and Milling

E Total energy consumption J E1 Machine setup energy (energy consumed by idle machine) J E2 Cutting energy (energy consumed during material removal) J E3 Energy consumed during tool change J E4 Energy to produce cutting tool per cutting edge J E5 Energy to produce workpiece raw material J E6 Energy to dispose the machining process waste J

Chat Online### Comparison of energy efficiency between ball mills and

01/06/2009· Although ball mills can still be found in the regrind circuits in a number of mineral processing plants, their energy consumption is high, and size reduction efficiency is low. The need to grind the ore finer to liberate the minerals and the dramatic increase in the cost of energy in the mid 1970s resulted in more efficient comminution processes being sought.

Chat Online### Ball Mill Design/Power Calculation LinkedIn

12/12/2016· If P is less than 80% passing 70 microns, power consumption will be. Ball Mill Power Calculation Example. A wet grinding ball mill in closed circuit is to be fed 100 TPH of a

Chat Online### Ball Mill: Operating principles, components, Uses

A ball mill also known as pebble mill or tumbling mill is a milling machine that consists of a hallow cylinder containing balls; mounted on a metallic frame such that it can be rotated along its longitudinal axis. The balls which could be of different diameter occupy 30 50 % of the mill volume and its size depends on the feed and mill size. The large balls tend to break down the coarse

Chat Online### Super Energy-Saving Ball Mill

Brief Introduction. Super energy-saving ball mill is mainly featured by adopting intermediate transmission to replace previous edge transmission. Main gearwheel, which should be fitted at one end of the traditional ball mill, is fitted at intermediate part of the drum for the MQGZ, to make torque force of the transmission unit significantly. altered, so as to get the electricity consumption saved about 40-50%.

Chat Online### Barry Wills' Blog: The impact of milling costs on total

06/01/2014· It has been shown, for example, that the replacement of a SAG mill with a HPGR in a conventional SAG-ball circuit may reduce grinding energy consumption by 15–20%. Taking into account additional savings, such as media and liner wear, it was found that a grinding cost saving of 25–35% was potentially achievable with the use of HPGRs in such conventional circuits. Other studies have found

Chat Online### Stage 4: Finish Process Cement Production

Energy consumption and output. Cement mills are normally driven by electric motors. Modern installations draw power of 2-10 MW. The power (in kW) required to turn a ball mill is approximated by: P = 0.285 d (1.073-j) m n where d is the internal diameter in metres, j is the fraction of the mill volume occupied by media, m is the total mass of media in the mill, in tonnes, and n is the mill

Chat Online### Ball milling,grain size and mechanical attrition

29/06/2016· roller mill attrition and compression soft materials 3. colloid mill impact and attrition for all drugs and brittle materials 4. fluid energy mill impact and attririon for all drugs 5. ball mill impact and attrition moderately hard and friable materials general characteristics of various types of mills 26. mechanical attrition 27.

Chat Online### Colloid Mill: Operating Principles, components, Uses

The energy consumption of a colloid mill depends on; a. The viscosity of the product. b. Feed rate . c. The temperature during processing. Pharmaceutical uses of colloid mill. 1. Colloid mill is most often used for the comminution of solids and for the preparation of suspensions especially suspensions containing solids that are not wetted by the dispersion medium. 2. It is also used to

Chat Online### PIN MILLS SlideShare

11/02/2015· If both the discs counter rotate,the particle size may be reduced to 2 micro meter. Pin mills may grind 0.05-6 tons/hr. Depending on the product end size of particles and capacity,the energy consumption may vary from 3 to more than 100 kW. The specific energy consumption is10- 100kWh/ton at peripheral velocities 100- 200m/s Usually the peripheral velocity of the pin grinder is 80-160m/s The

Chat Online### GM Series High Press Grinding Roller(HPGR)---Brief

Brief Introduction of GM Series High Press Grinding Roller(HPGR) The HPGR system we offered is well designed an precisely assembled for smooth operation and a long service life. It provides advantageous crushing effect and system throughput which offer a 30 percent leap on capacity and a 20 percent decline on energy consumption than traditional process due to its superior roller surface

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