Thursday, 3 December 2020
Zero Unplanned Downtime

Zero Unplanned Downtime

Yokogawa Australia recently published a success story about their work with Evolution Mining. 

In the space of 5 years, Evolution Mining has become the second largest gold mining company listed on the Australian Stock Exchange, with six wholly owned operations spanning the east and west coasts of Australia and holding an economic interest in a seventh operation. Evolution Mining produced an astounding 804,000 ounces of gold in the financial year of 2016 and, despite the divestment of a seventh wholly owned operation in September 2016, with the recently acquired economic interest, Evolution is extending its commitment to the Australian mining industry, forecasting a production high of 860,000 ounces of gold in FY 2017.

350km west of Sydney lies a small town known for its gold discovery heritage, dating back to 1893- West Wyalong NSW. This is where Evolution’s flagship site - Cowal gold mine is located. Where it produces a staggering 240,000 ounces of gold per year, equating to about 30% of Evolution’s total gold output. This impressive amount of gold production places the Cowal operations, as one of the largest open pit gold mines in Australia and one of the core operations for the business.

The mining operation produces from a number of different faces within the single pit. Its benches are 9m in height and are mined as 3m x 3m  itches. Ore is then hauled by truck from the pit face to either a stockpile area or directly fed into the primary crusher, which forms the start of the gold processing plant. Commissioned in 2006, the Cowal gold processing plant consists of crushing, two stage grinding, sulphide flotation, regrind and Carbon In Leach (CIL) recovery. The gold processing plant currently processes an impressive 7.5 Mtpa and in June 2016 approximately 2.7 million ounces of gold had been produced as a result.

Since 2006, Cowal has continuously optimised their process automation system, increasing their production output by a 220%. The complete gold processing plant is controlled and monitored by an array of distributed control system technology that utilises Yokogawa's CENTUM VP Distributed Control System.

To find out more download Yokogawa's success story here.

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