KAZ Minerals is constantly seeking to improve the energy efficiency of its facilities.
Total energy use increased by 82% as production ramped up at Bozshakol and Aktogay and as the Bozymchak mine in Kyrgyzstan operated for the whole of the year at full design capacity. Energy consumption in the East Region increased mainly due to periods of colder weather in 2016 compared to 2015, which resulted in an increase in heat energy consumed.
Energy use by type (PJ)
Modern and efficient processing facilities
Energy use by asset (PJ)
Methodology change to the recording of heat energy generated within the Group has resulted in a 0.68 PJ reduction in 2015 energy use. The total energy use was previously reported as 4.64 PJ in 2015.
The start of production from the sulphide concentrator at Bozshakol in February 2016 led to an increase in electricity consumption to 1.68 PJ from 0.15 PJ in 2015. Aktogay also increased its electricity consumption from 0.07 PJ in 2015 to 0.74 PJ as the oxide SX/EW processing facilities ramped up production in 2016.
Electricity consumption (PJ)
Bozshakol mining fleet utilises automated dispatch system
Diesel consumption increased by 84% from 0.88 PJ in 2015 to 1.62 PJ in 2016 as mining activity at the new open pit mines ramped up to supply ore to the Bozshakol concentrator and Aktogay heap leach operations. Both Bozshakol and Aktogay have been designed to minimise road haulage. Remotely dispatched trucks are used to deliver ore from the pit to the crushers after which material is moved by conveyors to the on-site processing plants. Rail spurs to the national rail network extend into the processing plants where concentrate is loaded directly onto wagons and shipped by rail to end customers in China.