MINE HOISTS
Hepburn ’ s mechanical hoist designs range from shaft sinking up to the largest production requirements : single drum , double drum , Blair and friction ( Koepe ) hoists . The company told IM : “ Hepburn provides efficient , functional and robust designs and fully integrated hoisting solutions with single source responsibility . Additional services include the design and supply of stage winches , compensating sheaves , automated weighing systems , new braking systems , hoist rebuilding and electrical refits including drives , motors and hoist operator consoles .” HEI owns the IP of well over 1,500 hoists installed by Davy Markham , Canadian Ingersoll Rand ( CIR ), Westinghouse , FH & B , and Ottumwa . It also provides OEM parts and field service worldwide for its entire product line .
For Kirkland Lake Gold ( KL ), Hepburn was awarded the contract to automate the hoists at the Macassa mine . “ Our successful relationship with KL began with the supply of the production , service and auxiliary hoists . The automation order encompasses the supply of our Hepburn Hoist Manager software , Load Pocket Weighing Systems , Hepburn Hoist Reporter data management and the conversion of the service hoist from a double drum sinking configuration to a Blair service hoist configuration .”
For Wesdome Gold Mines , with the award of the electrical project at the Kiena project ,
Hepburn continues its relationship with the miner that began at the Eagle River mining complex . The Kiena project includes the supply of a new AC motor , drive and HEI ’ s state of the art Hepburn Hoist Manager software .
Hepburn is also continuing its relationship with Alamos Gold with a contract for the supply of a new production and service hoist systems at the Island Gold Project . The supply includes a double drum production hoist 5 m x 2 m with a 5,000 kW drive and a 4.5 m x 1.8 m single drum service hoist with a 2,500 kW drive .
Hepburn is also a leader in functional safety , having supplied four hoists fully SIL rated to IEC61508 Standards to RUC Cementation Mining for Rio Tinto ’ s Oyu Tolgoi mine . This is one of the first fully SIL rated shaft sinking operations worldwide .
Finally , Hepburn recently completed a number of hoist drive and control upgrades for Evolution Gold . The image below shows remote control consoles on the far left and far right for a 2,900
HEI hoist at KL Gold Macassa
HP service hoist and 4,000 HP production hoist , respectively , with the remote control console in the centre for the 7,000 HP production hoist . The required shutdowns for these installations were completed on schedule . For the 7,000 HP production hoist the project also included new dual AC drives , AC motors , drive transformers , switchgear and a control system upgrade . Finally , the back right console controls the 7,000 HP service hoist for which a new control system and full automation were delivered . This shutdown was completed two days ahead of schedule . IM
INC
Mine Hoist Systems
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AUGUST 2021 | International Mining 91