African Mining November 2021 | страница 37

All Images : Aggreco

Ora Banda Davyhurst project by night .

station will enable Ora Banda Mining to reduce CO ₂ emissions by approximately 25 000 tonnes during the initial five years of operation .

“ This project demonstrates great innovation , uses a virtual gas pipeline and is a world-first for us using the high-speed reciprocating gas engines in our power generators . The power station is highly efficient , scalable and very suitable for transient loads and for the introduction of solar at a later stage .”

Whyte added that Aggreko ’ s contract to supply the mine with power saved the junior miner on large capital expenditure and allowed miners to focus on their core skill of mining .

“ Of appeal to miners is being able to take on flexible contracts with no capital outlay . In addition , Aggreko upscales the technology , and the level of power is scalable so it can evolve with the mine ,” he said .

“ At Aggreko we will reduce the amount of fossil diesel fuel used in customer solutions by at least 50 % by 2030 and become a Net- Zero business across all services we provide by 2050 . We are continuing to innovate and work with miners to reduce carbon by providing them with cleaner , scalable and modular energy as they work toward their Net-Zero targets .”

“ Initially , power was supplied to the site via an overhead line from Kalgoorlie . It is now trucked 650km to site where it is used to power the gas generators . The power station developed for the site now supplies power to the processing plant , to the administration complex , our exploration and core processing facilities , the main mine accommodation plant , and out to the underground mining offices . It also powers our primary communications facilities . Working with Aggreko has resulted in a significant reduction of greenhouse gas emissions for our company .”

A virtual gas pipeline is a substitute for a physical pipeline whereby gas that would typically be conveyed through a conventional gas pipeline is instead transported as liquified natural gas ( LNG ) or compressed natural gas ( CNG ) to the point of use by sea , road , rail or through a combination of one or more of these transport modes .

Aggreko ’ s team is skilled at designing , installing , and operating offgrid virtual power plants to provide reliable energy even as mines explore further away from power grids . •

Ora Branda Mining Managing Director David Quinlivan said mining operations started on their large land holding in Western Australia in 2019 and reprocessing started again in January 2021 .

“ As part of the capital works program , we needed to reestablish a power station at Davyhurst and we worked with Aggreko and Evol LNG to build a natural gas-powered station to power all of the site ,” Quinlivan said .

Ora Banda Davyhurst Virtual Gas Power Plant .