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Asian Gold reserves DB
Batu Hijau Gold Mine (Indonesia)
      paishanlou gold mine (china)
      gaolong gold mine (china)
      ..................
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  Page 268
 
اولينقبليبعديآخرين
   MINING AND MILLING
   Batu Hijau is an open-pit mine. Ore is transported to the primary crushers using P&H 4100 electric mining shovels and a fleet of 220t-capacity Caterpillar 793C mechanical-drive haul trucks. The mine typically handles around 600,000t/d of ore and waste, the ore grading an average 0.49% copper and 0.39g/t gold.
   Following primary crushing, the ore is transported to the concentrator by an overland conveyor, 1.8m wide and 6.8km long. The concentrator circuit consists of two-train SAG and ball mills, followed by primary and scavenger flotation cells, vertical regrind mills and cleaning flotation cells to produce a copper-gold concentrate grading 32% copper and 19.9g/t gold.

Core of batu Hijau gold mine

Tank of cyanidation of plant
    Counter-current decantation thickeners are used to dewater the concentrate to a slurry, which is pipelined 17.6km from the plant to the port at Benete. Here it is dewatered further, then stocked in an 80,000t-capacity storage area prior to shipment by sea.
   Once removed from the open pit by electric shovels and 240-ton haul trucks, the ore is crushed and conveyed four miles (6.4 kilometers) to the concentrator and through two grinding mills circuits and five flotation lines. The final concentrate is then pumped to the port, where it is filtered and then shipped to smelters in Asia and Europe.
  
  
 
 
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