Degbed Company Limited

Degbed Company Limited is a limited liability company which was founded in 13th June 2011.Our core mandates are mechanical installation and maintenance of ball and sag mill, scrubber, shaft laser alignment, condition monitoring and general maintenance works.

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HARDINGE-KOPPERS 32' x 12' (9.75M X 3.66M) EGL SAG Mill

1 ONLY "COMPLETE" HARDINGE-KOPPERS 32' x 12' (9.75M X 3.66M) EGL SAG Mill 6800 HP dual drive (2 x 2550 kw) Formerly fitted with steel liners not included Lubrication systems, liner handler, feed chute, trommel and switchgear are included. Components consist of the following; Mill Shell (4 pieces) Mill trunnions, trunnion liners

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Girth Gears More than Just Metal and Teeth

Girth gears fall into two basic categories; flange mounted and tangential spring mounted. Flange-mounted girth gears, the more common of the two, are most frequently utilized in "cold" processing equipment such as SAG (semi autogenous grinding) mills and ball mills for use in the mining and cement industries.

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Equipment Specification Sheet SAG Mill

Equipment Specification Sheet SAG Mill Specific Gravity 3.6 tonnes/m3 Ball Mill Work Index 11.1 metric @ P 80 88 µm metric Ball Mill Work Index 12.2 metric Feed to SAG Mill 80% passing 150 mm Product from SAG Mill 80% passing 1000 µm SAG Mill Pinion Power 1155 kW SAG Mill Motor Size 1268 kW (1700 HP) SAG Mill Size (Diameter) 5.791 m (19

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Siemens modernizes drive system for ore mills in Chile

The modernization project includes two 8 MW SAG (semi-autogenous) mills and two 9.7 MW ball mills with dual pinion drives. The new drive systems are replacing the existing synchronous motors and direct converters for the SAG mills and the drive systems of the ball mills, which were installed by a

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First use of Sinamics SL150 International Mining

Installation of a Sinamics type SL150 cycloconverter is the center-piece of the modernisation of the ore mill in the Robinson mine. The Simine Mill GD solution concept for gearless mill drives and twin-pinion mills enables analogue or early digital control systems to be replaced without also having to replace the motor or transformers.

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Installation, Operation and Maintenance of Airflex

Installation, Operation and Maintenance of Airflex® Model VC Grinding Mill Clutches Forward this manual to the person responsible for Installation, Operation and Maintenance of the product described herein. Without access to this information, faulty Installation, Operation or Maintenance may result in personal injury or equipment damage.

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Colquhoun Mill Operations Superintendent New

2 x 15MW twin pinion SAG Mills (36'x20'), 2 x 15MW twin pinion ball mills (40'x26') 6 x Falcon Concentrators and GECKO Intensive Leach Reactor

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Current Issues on High-Power Cycloconverter fed

For example, a SAG mill with an internal diameter of 11 meters will have a critical speed of 12.72 [rpm]. For a Fig. 4, 12-Pulse connection. Twin 6-Pulse cycloconverter-fed synchro-nous machine with 2 stator windings (Shown only one stator A1-B1-C1 winding connected). Fig. 5, 12 Pulse cycloconverter fed synchronous machine with

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Design of the 40 foot SAG Mill Installed at the Cadia

The design of the 40-foot diameter SAG mill installed at the Cadia Gold Mine, New South Wales Australia, followed after two years of extensive laboratory and pilot plant testwork.

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FilterMag Industrial Products Division Mining and Aggregates

Whether you're mining copper in Arizona, diamonds in South Africa, gold in South America, or Coal in Wyoming, FilterMag will save you money.

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First use of Sinamics SL150 cycloconverters for grinding

Installation of a Sinamics type SL150 cycloconverter is the centerpiece of the modernization of the ore mill in the Robinson Mine. The Simine Mill GD solution concept for gearless mill drives and twin-pinion mills enables analog or early digital control systems to be replaced without also having to replace the motor or transformers.

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RME RUSSELL Mill Relining Machines and Handlers

RUSSELL Mill Relining Machines and Handlers. The centrepiece of RME's mill relining system is a RUSSELL 7 or RUSSELL 8 (seven or eight axis) liner placement mill relining machine. Available in maximum liner capacities from 500kg to 7,500kg, these machines represent the ultimate in new liner replacement capability. RUSSELL TWIN 8 mill relining

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Paved to Gold Canadian Mining JournalCanadian Mining

The grinding circuit will consist of two parallel lines, each having one twin-pinion, semi-autogenious (SAG) mill (36'x20′) and one two-pinion ball mill (26'x40′). These four mills will be equipped with a pair of 7,500 kW variable speed drive motors.

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Seite 17 MineralsFocus 1/2012

The twin pinion mill drive application uses the same control system technology as the gearless drive tech- nology, providing variable speed to optimize the grind-

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Twin Drive Gearbox For Reversing Cold Mill Shanthi Gears

Address 304-A, Shanthi Gears Road, Singanallur, Coimbatore 641 005, Tamil Nadu, India. Phone No +91 422 4545745. Fax +91 422 4545700

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Mill Gear Specialists Conduct Gear Inspections and Risk

Our mill gear specialists conduct gear inspections and risk assessments based on the inspection recommendations outlined in the annex of AGMA 6014.

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Choosing a SAG Mill to Achieve Design Performance

This value corresponds to about 15% steel in the SAG mill and a load of about 35% and represents the motor power required and the shell is sized to suit that power. Lower steel and charge volume loads draw less power but the chamber will draw power up to this maximum load.

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Powerful gears in rolling mills Machine Design

Powerful gears in rolling mills. Because of an impact when a bar enters the mill, the pinion "bounces" within the gear tooth space, causing high dynamic tooth loads. After installation

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How to Inspect a Gearbox

Measure gear backlash by mounting a dial indicator so it is similar to a pinion tooth profile, block the gear to prevent its rotation and rock the pinion through the backlash. To measure shaft endplay, mount a dial indicator at the end of a shaft and move the shaft in the axial direction.

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SINGLE STAGE SAG/AG MILLING DESIGN

In a single stage SAG mill, there are two regimes of breakage that must be controlled in order to maximise power efficiency and hence capacity. These are the high energy coarse rock breakage, load control and low energy breakage to control circulating load and to meet the target product size.

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Pinion Shaft an overview ScienceDirect Topics

A gearless drive SAG mill, 12 m diameter and 6.1 m length (belly inside liners) with a motor power of more than 20 MW, went into operation at Newcrest Mining's Cadia Hill gold and copper mine in Australia, with a throughput of over 2,000 t h −1 (Dunne et al., 2001).

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Mine Hoists_CITIC Heavy Industries Co.Ltd

Our market share in China exceeds 80% with the largest mills supplied to date being a Ø7.9m x 13.6m 2x8.5MW Ball Mill and a Ø11m x 5.4m 2x8.5MW SAG Mill, being the largest in China. CITIC HMC Company is the key large enterprise for the design and manufacture equipments in China. The manufacture of grinding equipment begins from 1960s.

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AMIT 135 Lesson 7 Ball Mills & Circuits Mining Mill

Ball Mill Operation. Ball mills ride on steel tires or supported on both ends by trunnions. Girth gears bolted to the shell drive the mill through a pinion shaft from a prime mover drive. The prime movers are usually synchronized motors. During rotation, a portion of the charge is lifted along the inside perimeter.

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Modernization of mill drive systems in minerals

Modernization of a twin pinion AC synchronous drive system using a parallel setup approach to minimize downtime during cutover Solution Replacement of the complete converter system with the new SINAMICS SL150 cycloconverter in air-cooled version with the SINAMICS SL150 preassembled in a container module (E-House) together with the new

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Worldwide Grinding Success for Outokumpu Technology

Frontier's trunnion-supported SAG mill, with conventional twin-pinion drive, also features variable speed capability, allowing greater production flexibility and the ability to cope efficiently with large ore variations. This will be one of the largest dual pinion variable speed drives for a SAG mill in the world.

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Ball mill maintenance Prime Machine, Inc.

Installing bearings on pinion gear for mill. Craftsmen trained on bearing installation and experienced. trunion liner fabricated and machined. we are able to have rubber lined. Prime crew completing pinion to girth gear alignment and motor to pinion alignments.

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Press Presse Press Presse Siemens

Installation of a Sinamics type SL150 cycloconverter is the centerpiece of the modernization of the ore mill in the Robinson Mine. The Simine Mill GD solution concept for gearless mill drives and twin-pinion mills enables analog or early digital control systems to be replaced without also having to replace the motor or transformers.

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INNOVATION NEWS Mills and GMDs ABB Ltd

time the mill volume also increased. Typically a SAG mill has a much larger diameter compared to its length. Yet the SAG mill of Newmont's Yanacocha mine in Peru is a single stage mill (no ball mill after the SAG mill) and has a diameter and length of 32', driven by a 16.5 MW GMD from ABB. Above the Arctic Circle in Sweden, Boliden

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Conveyor Chain Installation and Maintenance

Chain Installation and Maintenance Bucket Elevators On light duty elevators it may be possible, if access and space are available, to install the chain from the top of the elevator and join the chain at the drive sprocket. On heavy duty elevators (usually twin strand) it may be necessary to fully or partially assemble the chains and buckets in

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