RC600-CS3

⛏️ RC600-CS3 600 m Crawler Reverse Circulation Drill Rig

The RC600-CS3 is a 600 m class crawler reverse circulation drill rig designed for mid-to-deep mineral exploration and large-volume on-site sampling. Built on the RC600 deep-hole platform, it adds a three-in-one cyclone sampling system that directly links cuttings return, cyclone separation, sample splitting and sample bagging, making it better suited to exploration projects that require continuous drilling, continuous sample return and large-scale sample numbering management.

🌀 The CS3 three-in-one system centralizes the sampling process at the drill site

The three-in-one sampling system integrates cyclone separation, representative sample splitting and sample collection into one continuous process. After cuttings return to surface through the inner tube of the dual-wall drill pipe, they enter the cyclone system directly for gas-solid separation, then proceed to splitting and bagging. This reduces manual sample transfer and secondary handling, making it especially suitable for mineral exploration projects with high daily sampling volumes.

🔄 600 m class reverse circulation sample return places more emphasis on deep-hole stability

As hole depth increases, the cuttings return distance becomes longer, and air volume loss, drill pipe sealing and in-hole air leakage have a more obvious impact on sample recovery. The RC600-CS3 recommends a working air pressure of 1.6–6 MPa and air consumption of 16–75 m³/min. The purpose is not only to drive the RC hammer, but also to ensure that cuttings can continuously return through the inner tube to the cyclone sampling system.

🧪 Suitable for continuous depth-based interval sampling

RC drilling obtains cuttings samples, not complete cores. On site, fixed sampling intervals can be set according to project requirements, for example collecting one bag of sample every 1 m or every 2 m, while simultaneously recording the hole number, start and end depths and sample number. The three-in-one sampling system allows drilling, sample return, splitting and bagging to be more closely connected.

🥇 Deep gold anomaly verification

In gold exploration, shallow geological and geochemical anomalies often need deeper drilling to confirm whether they extend downward. The 600 m drilling depth of the RC600-CS3 can cover deeper structural zones, alteration zones and mineralized layers, making it suitable for rapidly determining the continuity of deep mineralization, peripheral targets and potential orebody boundaries.

🟠 Large-scale deep screening for copper, iron and lithium mines

Copper, iron, lithium and polymetallic projects often require multiple verification holes arranged over a large area. The RC method can quickly obtain large quantities of cuttings samples and use assay results to screen key deep targets. For key anomalies, core drilling rigs can then be used for continuous coring, forming a combined exploration solution of “rapid RC screening + fine core verification.”

📍 Depth marking and sample tracking determine later data quality

What the three-in-one system improves is sampling process efficiency, but sample management must still be strict. Each sample bag should be marked with the hole number, sample number, start and end depths, date and shift, and on-site records should be consistent with the sample bags. If the project implements a QA/QC system, duplicate samples, standard samples and blank samples should also be set according to requirements.

🧹 The cyclone and splitter must be cleaned regularly

If residual cuttings between different mineralized intervals are not cleaned in time, the risk of sample contamination increases. Each time drilling stops, the hole is changed or a new key sampling interval is entered, the interior of the cyclone, splitter and sample return hose should be checked for residue to avoid mixing samples from the previous depth into the next sampling interval.

📏 600 m drilling depth and 105–450 mm hole diameter

Maximum drilling depth is 600 m, and hole diameter is 105–450 mm. This range can not only meet most mid-to-deep mineral exploration holes, but also handle some large-diameter water wells and mine dewatering projects. Actual drilling depth will vary with hole diameter, dual-wall drill pipe weight, air compressor capacity and formation conditions.

📐 45° / 90° working angles suit different orebody attitudes

The equipment supports 45° and 90° working angles. For inclined veins, fault-controlled orebodies and specific targets, 45° inclined holes can be used to improve the effectiveness of crossing the target body; for vertical overburden surveys and general deep water wells, 90° construction can be used. The hole angle should be based on the geological design.

💪 29 T lifting force meets 600 m class dual-wall drill pipe tripping

The dual-wall RC drill pipe structure is more complex than ordinary single-wall drill pipe, and the full string weight and friction are also higher in deep holes. The 29 T lifting force can be used for normal tripping, RC hammer recovery and some casing operations. If stuck pipe or abnormal pull-out resistance occurs, it should first be handled by judging hole cleaning and in-hole conditions.

🔄 12000 / 6000 N·m dual-condition rotary system

Maximum rotary torque is 12000 / 6000 N·m, corresponding to rotary speeds of 75 / 150 r/min. Low speed and high torque are more suitable for large-diameter, high-resistance and hard rock intervals; higher rotation speed is suitable for stable formations with lighter loads. On site, adjustments should be made dynamically according to sample return conditions and drilling tool loads.

💨 Air compressor displacement determines whether deep-hole sample return is continuous

In a 600 m RC hole, the air compressor must not only provide impact energy, but also transport cuttings from the hole bottom to the surface. The recommended air consumption reaches 16–75 m³/min. If air volume is insufficient, common signs include reduced sample return, delayed sample return and cuttings accumulation at the hole bottom, so air compressor selection should fully consider hole depth, hole diameter and altitude.

💎 RC hammers or DTH hammers can be used directly in hard rock

Granite, limestone, sandstone and other relatively intact rock formations can use RC hammers or DTH down-the-hole hammers. RC hammers are more suitable for exploration holes requiring continuous samples; ordinary DTH hammers are more suitable for water wells and general boreholes where sample quality is not emphasized. The same machine can switch drilling tools according to project objectives.

🌧️ Mud rotary drilling can be used in loose overburden

Soil layers, clay, sand layers and gravel layers are prone to hole collapse and may not be suitable for direct high-pressure RC drilling. The equipment supports mud rotary drilling, so mud and casing can first be used to stabilize the upper hole section, and after entering rock formations, the process can be switched to RC or DTH to improve hole stability.

🧱 Fractured zones and air-loss formations require attention to sample return distortion

Fault fracture zones and large fissures can cause air leakage, and cuttings may remain in the hole and then return in concentrated batches, causing poorer correspondence between samples and actual depth. During construction, penetration should be reduced, hole cleaning maintained, and special records made in abnormal intervals. If necessary, foam, casing or other air-loss treatment methods should be used.

💧 It can also be used for deep water wells and mine water supply

The RC600-CS3 is not only suitable for mineral exploration, but can also be used for agricultural, industrial and mining deep water wells. Water well projects focus more on hole wall stability, aquifers and well completion structure, and do not necessarily require the full sampling system to be activated. Changing drilling tools and construction procedures according to use can improve equipment utilization.

🌊 Mine dewatering and groundwater investigation

The 600 m class depth and relatively large hole diameter are also suitable for some mine dewatering and groundwater investigation projects. For such projects, well locations, well spacing, well diameter and pump flow should be determined according to hydrogeological conditions. The drill rig is only responsible for hole completion and cannot replace a complete dewatering design.

⚡ 132 kW Cummins power is suitable for heavy-load continuous operation

The equipment uses a 132 kW Cummins engine to provide power for rotation, feed, crawler travel and auxiliary hydraulic systems. RC sites usually also require large air compressors and sampling systems, so fuel supply, equipment layout and maintenance space should be planned uniformly before starting work.

🚜 3.5 km/h crawler travel is suitable for transfers within mining areas

Travel speed is about 3.5 km/h, and the maximum climbing angle is referenced at 21°. The crawler chassis is suitable for gravel roads and generally uneven platforms in mining areas. The overall weight is about 12.5 T, so before transfer, road bearing capacity, slope and soft ground conditions should be confirmed.

🦵 1.7 m outrigger stroke helps stabilize inclined holes and high-torque drilling

The outrigger stroke is 1.7 m, which can help level the equipment and provide stable support. When performing 45° inclined holes or high-torque drilling, the force direction on the whole machine becomes more complex, and outrigger loading and platform stability will directly affect hole direction control and operational safety.

🧵 2.5 T winch facilitates handling of RC hammers and sampling accessories

The winch lifting force is 2.5 T, which can be used for handling RC hammers, dual-wall drill pipes, sample return hoses and other auxiliary tools. The sampling area is usually close to the drill rig and cyclone, so during lifting, suspended objects should be kept out of the working range of sampling personnel.

📦 A 12.5 T whole machine requires more complete hole location platform planning

The overall weight is about 12.5 T, and the overall dimensions are about 7 × 2.1 × 2.9 m. In addition to the drill rig, the site also needs to place the air compressor, cyclone sampling system, sample bags and transport vehicles, so the drilling platform should reserve sufficient area to ensure smooth sample return piping and safe personnel access.

⚠️ Key points for daily maintenance of the sampling system

Before starting work each day, check the dual-wall drill pipe seals, sample return hoses, cyclone, splitter, engine, hydraulic system and high-pressure air hoses; continuously observe whether sample return is continuous during construction; and clean the sampling system in time when changing holes and sampling intervals to avoid residual cuttings contaminating subsequent samples.

Due to differences in actual geological conditions, in-hole tools, drilling angles and operating methods, the final drilling efficiency, drilling depth, sample recovery and well completion results should be based on on-site working conditions.

📊 Main technical parameters