RC DTH Hammer

SINODRILLS RC DTH Hammer

The reverse circulation hammer is used to collect underground rock and mineral samples quickly and efficiently using a pneumatic rotary drill. This hammer offers high speed and low cost per meter drilling. This type of drilling is considered ideal for obtaining mineral samples in the early phases of an exploration project.

As all the rock cuttings in an RC hammer are recovered at the surface through the centre of the hammer and drill string, the samples collected through this method are uncontaminated. This hammer has also been designed to handle injection of water, foam, oil and polymers without any performance loss.

RC DTH Hammer Benefits

Reverse Circulation (RC) DTH hammers are essential tools for mineral exploration and grade control, offering performance advantages standard DTH cannot match. We manufacture these specialized hammers to integrate an inner tube, which ensures the rock sample is collected efficiently and uncontaminated. This innovation is what elevates RC drilling above conventional methods for geological analysis.

We provide RC hammers that deliver powerful percussive action while maintaining a pristine sample flow. This dual focus on rapid penetration and accurate sample recovery ensures the integrity of your exploration data, which is crucial for making informed decisions. Our designs reduce friction and wear, translating directly into superior operational longevity and reduced service costs for your fleet.

• Pristine Sample Integrity: The RC method allows the rock cuttings to travel up the inner tube of the drill string, isolating them from the borehole walls. We guarantee that this protected pathway minimizes contamination from surrounding strata, providing geologists with the truest possible representation of the target formation for accurate analysis.
• Superior Penetration Rates: Our RC DTH hammers are engineered to maintain a powerful, high-frequency strike rate, even when handling the reverse airflow necessary for sample collection. We ensure that this robust percussive force maximizes the rate of advance in hard and dense rock formations, accelerating the exploration process substantially.
• Excellent Hole Stability: The continuous, high-volume air flushing inherent in the RC system keeps the borehole exceptionally clean during drilling. We find that this consistent evacuation of cuttings reduces friction and wear on the hammer and bit, helping to maintain a stable, well-formed hole throughout the entire depth of the drilling program.
• Reduced Water Interference: In environments with high water ingress, the positive pressure and effective sealing of the RC system help manage water inflow better than standard drilling. We provide this capability to ensure continuous drilling and accurate sample collection, preventing washout and maintaining data reliability, even in challenging wet conditions.

RC DTH Hammer Applications

We recommend the use of RC DTH hammers in any scenario where precision in sample collection must be paired with efficient deep drilling. Our hammers perform reliably in harsh environments, providing the necessary operational stability for continuous use in large-scale exploration campaigns. This reliability ensures we meet demanding project timelines effectively.

• Mineral Exploration and Prospecting: RC DTH hammers are the industry standard for early-stage mineral exploration where speed and deep penetration are necessary. We utilize this method to obtain precise, continuous rock samples across large areas, which is vital for accurately mapping ore bodies and calculating preliminary resource estimates before full mining begins.
• Mine Grade Control: In active mining operations, we employ RC drilling for near-blast hole sampling and grade control. This rapid sampling process allows us to quickly define the boundaries of ore and waste material. We use this critical information to manage the flow of material, optimizing the blending process and preventing the dilution of the valuable ore.
• Geotechnical and Environmental Surveys:  For major construction projects, dams, and environmental site assessments, we use RC DTH to collect reliable subsurface data. The method provides deep profiles for soil and rock types, allowing us to assess ground stability and potential contamination pathways with confidence.
• Water Well and Geothermal Drilling: While often used for mineral work, the RC system is also valuable in water well and geothermal exploration. We supply the tools to efficiently drill deep boreholes while providing samples that verify aquifer characteristics and thermal gradients, guiding the final well completion strategy.