Reference number:
2010.152/ΛΚΔΜ
Key Project Information
“Maintenance, Repairs and Improvements to Belt Conveyors at the Kardia Field Mine, in the Context of Weekly and Daily Mine Maintenance Works”
Brief Description of the Scope
The project includes maintenance, repairs and improvements to belt conveyors at the Kardia field mine, in the context of weekly and daily mine maintenance works, for the years 2011 and 2012.
The objective is to ensure seamless operation of the belt conveyors and extension of their service life. Furthermore, cleaning also aims to eliminate point charges and restore alignment, to avoid increased wear and tear of the rubber lining and drive rollers.
Belt Conveyor Cleaning & Maintenance
Continuous-operation opencast mining is applied extensively to lignite deposits of great horizontal spread in the Prefectures of Kozani and Florina. A primary feature of this method is the continuous excavation, transport and dumping equipment used.
To ensure the proper operation of the belt conveyors, they were serviced and cleaned of residual material deposits, and their alignment was checked and restored. Cleaning is accomplished with the use of special devices, metal and/or plastic scrapers.
DEI S.A.
Contracting Entity
2011
Year of Construction
949.274 €
Contractual price:
Kardia Mine
Physical Object Index
Conveyor Rollers & Idler Garlands
- Disassembly – sorting and reassembly of conveyor idler garlands,
- Disassembly – sorting and reassembly of conveyor basin – complex idler garlands,
- Installation of rolling and return garlands and rollers on ground conveyor sections,
- Removal of rolling and return garlands and rollers on ground conveyor sections,
- Removal – installation of conveyor rollers with bogies,
- Collection, transportation and mounting on axles of belt conveyors with fixed or movable frames,
- Replacement of bogie rollers on belt conveyor ground sections and heads.
Restoration of Belt Conveyor Operational Issues
Improvement of Drum Roller Sliding Properties
- Control and restoration of proper tension
- Placing of elastic cover over the drum roller to increase the friction coefficient and prevent slippage
Control of Belt Conveyor Lateral Shift – Alignment
- Control of proper rotation of all rollers at the support stations,
- Cleaning of rotating parts from residual material deposits,
- Control of proper alignment of the belt ends at the points of connection,
- Mounting of roller guides,
- Fine-tuning of rollers and drums with small shifts of their bearing angle,
- Cleaning and mounting of automatic belt control and position reset systems.
History of the Mine
Operations commenced in 1971. The Kardia Field includes mining operations on the Northwestern Field – Ypsilanti and the exploitation of the Komanos Settlement Mine deposit. The KSM has an annual yield of 12-14 Mt. The exploitation of the deposit is necessary to ensure supply of the SES Kardia and SES Agios Dimitrios, as well as the new SES Ptolemaida 5. The villages of Pontokomi and Mavrodendri are the closest to the mine.
