Kinross World Tracker

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6.23
0 (0%)
TSX:K
4.69
-0.09 (-1.88%)
NYSE:KGC
1500.4
-12.1 (-0.8%)
GOLD
  • 9
    °C
    08/20, 4:20am
    Fort Knox, Alaska
    25
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    08/20, 8:20am
    Toronto, Ontario
    30
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    08/20, 5:20am
    Kettle River-Buckhorn, Washington
    23
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    08/20, 5:20am
    Round Mountain, Nevada
  • 23
    °C
    08/20, 5:20am
    Bald Mountain, Nevada
    12
    °C
    08/20, 10:20am
    Maricunga, Chile
    27
    °C
    08/20, 9:20am
    Paracatu, Brazil
    39
    °C
    08/20, 12:20pm
    Mauritania, West Africa
  • 28
    °C
    08/20, 12:20pm
    Chirano, Ghana
    23
    °C
    08/20, 3:20pm
    Moscow, Russia
    14
    °C
    08/20, 10:20pm
    Magadan, Russia
    11
    °C
    08/20, 10:20pm
    Kupol, Russia
    24
    °C
    08/20, 1:20pm
    Las Palmas, Spain
    23
    °C
    08/20, 9:20am
    Belo Horizonte, Brazil
6.23
0 (0%)
TSX:K
4.69
-0.09 (-1.88%)
NYSE:KGC
1500.4
-12.1 (-0.8%)
GOLD
  • 9
    °C
    08/20, 4:19am
    Fort Knox, Alaska
    25
    °C
    08/20, 8:19am
    Toronto, Ontario
    30
    °C
    08/20, 5:19am
    Kettle River-Buckhorn, Washington
    23
    °C
    08/20, 5:19am
    Round Mountain, Nevada
  • 23
    °C
    08/20, 5:19am
    Bald Mountain, Nevada
    12
    °C
    08/20, 10:19am
    Maricunga, Chile
    27
    °C
    08/20, 9:19am
    Paracatu, Brazil
    39
    °C
    08/20, 12:19pm
    Mauritania, West Africa
  • 28
    °C
    08/20, 12:19pm
    Chirano, Ghana
    23
    °C
    08/20, 3:19pm
    Moscow, Russia
    14
    °C
    08/20, 10:19pm
    Magadan, Russia
    11
    °C
    08/20, 10:19pm
    Kupol, Russia
    24
    °C
    08/20, 1:19pm
    Las Palmas, Spain
    23
    °C
    08/20, 9:19am
    Belo Horizonte, Brazil

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Round Mountain’s new ore blending technique leads to more ounces

Round Mountain’s commitment to Continuous Improvement is evident in every aspect of their day-to-day work.

A great example of this is when the team came together in 2014 to find a way to leach Gold Hill ore in a more efficient way to save on costs and increase production.

“We originally made the assumption that the clay in the Gold Hill ore would be similar to Round Mountain ore,” said Frank Wagener, Continuous Improvement Manager, Round Mountain. “But, this turned out to not be the case and created a situation where we had leach pads that would not allow the solution to go through quickly. We were getting ounces, but it was taking too long to get them – a year or longer to get 50% of the gold.”

Facing the challenge of finding a new way of speeding up gold recovery from the leach pads, Round Mountain went back to the drawing board.

Leveraging a multi-disciplinary team – which included the Metallurgical, Geology and Mine Planning departments – Round Mountain was able to develop a new heap leaching model to enhance recovery by analyzing blending strategies, cut-off grades, leaching and revising recovery options.

“In the lab, we proved that blending ore enhanced recovery, so we thought: could we make it happen in the field at Gold Hill?” continued Frank.

Three test pads were used to assess different blends to get to the two blending strategies that they use today: blend soft advanced argillic clay ore at a 1:1 ratio with harder run-of-mine clay ore and blend the very soft extreme argillic clay ore at a 1:1 ratio with run-of-mine rock ore. The blending occurs as it is stacked onto the leach pads.

Round Mountain tested the new model at Gold Hill and right away more ounces were being recovered as the solution was able to saturate the ore more quickly. The new method is proving to be a success as it helped Round Mountain achieve a net increase of 91 Au koz. on a 100% basis in 2015 compared with 2014.

“Getting the best blend takes extra effort to get it right, but has been well worth the time. This is the result of many departments working together to make it possible,” said Frank.

Loading ore at Gold Hill

At Gold Hill

 
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