Down-the-hole drilling RIGS in open-pit metal mining

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In open-pit metal mining operations, down the hole drilling rig play a crucial role due to their strong rock-breaking capability. Metal ores are hard, requiring large-diameter and deep blast holes for mining, which DTH drills can perfectly meet. They use an impact-rotary rock-breaking principle, with the impactor working at the bottom of the hole. This reduces energy loss when the drill pipe transmits impact energy, enabling efficient drilling in hard rocks.

Take iron ore mining as an example:

 

  1. During overburden stripping and ore extraction, DTH drills can quickly create blast holes with a diameter of 150-250mm and a depth of 15-20 Метров.
  2. Compared with traditional drills, their rock-breaking speed increases by over 30%, and the holes have high verticality. This provides precise blast holes for subsequent blasting operations.
  3. The high-precision holes improve blasting effects, reduce ore dilution rates, and enhance mining efficiency and economic benefits.down the hole drilling rig