Gear efficiency key to lower drive cost | Machine Design
Motors amp; Drives; Gear efficiency key to lower drive cost. Efficiency of a speed reducer is an important selection factor that is often overlooked.
WhatsApp)
Motors amp; Drives; Gear efficiency key to lower drive cost. Efficiency of a speed reducer is an important selection factor that is often overlooked.
Case Study 2 Installation of Variable Frequency Drive (VF D) I n Ball Mill Motor Before CP Plant is operating 5 nos. ball mills, with common connection to single 30 HP motor. The motor load test conducted while operating all 5 nos. ball mill simultaneously is shown in table below:
surface of the mill flange. Typically, the synchronous motors used in SAG mills have a power higher than 10 MW. Even ball mills have a power larger than 10 MW. For this reason, they have an important impact in energy consumption and in the operation of the power distribution system. Figure 1. Picture of a typical GMD system for a SAG mill
Mill drive 5000 kW Diaphragm Double blind plate The efficiency of the separator is 73% based on the residue on the 90 production is obtained from a ball mill when the mill motor power is at a maximum and consequently the specific energy consumption is at minimum.
Siemens implemented a unique SIMINE Gearless mill drive with SIMATIC PCS 7 mill automation and a Frozen Charge Shaker. The mine operators profit not just from an operational efficiency of %, but also from low operating costs, minimized downtime, and outstanding availability and reliability.
The following are factors that have been investigated and applied in conventional ball milling in order to maximize grinding efficiency: a) Mill Geometry and Speed Bond (1954) observed grinding efficiency to be a function of ball mill diameter, and established empirical relationships for recommended media size and mill speed that take this factor into account. As well, mills
Compared to ball mills HPGRs achieve a 30 to 50% lower specific energy consumption, although they are not as common as ball mills since they are a newer technology. A similar type of intermediate crusher is the edge runner, which consists of a circular pan with two or more heavy wheels known as mullers rotating within it; material to be crushed is shoved underneath the wheels using attached plow blades.
The gearless drive design was not applied to the mills in the mineral industry until 1981 when the thenworlds largest ball mill, m diameter and m long driven by a MW motor, was installed at Sydvaranger in Norway (Meintrup and Kleiner, 1982).
Ball Mill Drive Motor Choices Artec Machine. ball mill drive motor choices Artec Machine Systems correction capacitors to a dual pinion gear driven mill Drive 2 A 5000 HP 514 rpm synchronous motor with an air clutch and gear start the mill and perform the grinding task it becomes an economic decision as to choice of drive motor.
Mill application features. Frozen charge protection Detects frozen charge in the mill, minimizing equipment wear and liner replacements.; Coupling supervision Detects if a failure or slippage occurs in the couplings and stops the system in case, preventing major damages.; Standstill detection Prevents the motors from restarting if the mill is still rocking or moving after a stop
Electric Motors IC Engines on mills Mils on kilns on kilns with derate on IC power Table 5 Reducer service factors In general use, few applications of gear drives in industrial applications are selected on the basis of service factors. Normally service factors are, or greater. Mill drive inchers can use this
What type of motor for a ball mill? posted in Tools and Tooling: Hello, I am looking to get into pyrotechnics and I was just wondering what type of motor I should get for my ball mill? What rpm for direct drive? Also, would I be able to wire the motor directly to my mains (230v AC)? I prefer to make things myself when possible, its more fun that way so I was going to make a ball mill to make
Several types of ball mill drives can be furnished, made up of various combinations of gearing, motors and transmission equipment. The correct combination to be selected takes into consideration power requirements, gear ratings, floor space, interference from other plant equipment and motor characteristics. The main types are described and illustrated on these pages. Motors considered are
ABBs GMD is the most powerful mill drive system in the market to power semiautogenous (SAG), ball and autogenous (AG) mills, This workhorse for grinding operations combines a robust, servicefriendly and fit for purpose design to provide highest throughput, reliability
A cement mill (or finish mill in North American usage) is the equipment used to grind the hard, nodular clinker from the cement kiln into the fine grey powder that is cement is currently ground in ball mills and also vertical roller mills which are more effective than ball mills.
Center drive and side drive are two common drive modes for a ball mill. Center drive grinding mill means the motor shaft extends along the axis of mill body while side drive has a motor located on the side of the mill and torque is transmitted via the large girth gear which is bolted on the flange of the mill body.. Materials are fed into the mill at a fixed flow rate along the shaftless
Several types of ball mill drives can be furnished, made up of various combinations of gearing, motors and transmission equipment. The correct combination to be selected takes into consideration power requirements, gear ratings, floor space, interference from other plant equipment and motor characteristics. The main types are described and illustrated on these pages. Motors
WhatsApp)