MX5456 RC hammer button bits
MX5456 RC hammer button bits
Product description:
RC drilling is a technique used in the majority of stages of mine development. As it is cheaper than diamond core drilling, it is often used in first stage exploration mining to delineate a potentially extractable ore body. It is also preferable to RAB( Rotary Air Blast) or air-core drilling when trying to reach great depths, but RC drilling is slower and more expensive than either of these two methods. RC drilling is also consistently used during in-pit grade control and the development stage of an ore body.
ROSCHEN RC bits sizes.
1. RC bits 86mm -102mm for 3" RC hammer RE531
2. RC bits 114mm -127mm for 4" RC hammer RE004
3. RC bits 121mm -133mm for 4.5" RC hammer RE542/RE543
4. RC bits 124mm - 138mm for 5" RC hammer RE545/PR40
5. RC bits 133mm - 146mm para 5.5" RC hammer PR52/RE547/PR54/MX5456
ROSCHEN adjust button number, button configuration, button diameter to get ultra-performance and reduce the drilling cost for you according to your rock formation situation.
MX5456 RC bits | ||||||||
Diameter | No x Button diameter mm | Button angle | Flusing holes | Shroud Dia mm | Weight (kgs) | Part No | ||
mm | inch | Gauge Buttons | Front Buttons | |||||
133 | 5 1/4 | 8x16 | 8x14 | 35 | 2 | 131 | 15.2 | MX5456-133 |
140 | 5 1/4 | 8x16 | 8x14 | 35 | 2 | 138 | 18.5 | MX5456-140 |
146 | 5 3/4 | 8x18 | 8x14 | 35 | 2 | 144 | 19.2 | MX5456-146 |
Basics of Reverse Circulation Drilling:
1. RC drilling uses rods with inner and outer tubes, the drill cuttings are returned to surface inside the rods. The drilling mechanism is a pneumatic reciprocating piston known as a hammer driving a tungsten-steel drill bit.
2. RC drilling utilizes much larger rigs and machinery and depths of up to 500 meters are routinely achieved. RC drilling ideally produces dry rock chips, as large air compressors dry the rock out ahead of the advancing drill bit.
3. RC drilling is slower and costlier but achieves better penetration than RAB or air core drilling; it is cheaper than diamond coring and is thus preferred for most mineral exploration work.
4. Reverse circulation is achieved by blowing air down the annulus of the rod, the differential pressure creating air lift of the water and cuttings up the inner tube which is inside each rod. It reaches the deflector box at the top of the drill string then moves through a sample hose which is attached to the top of the cyclone.
Advantages of Reverse Circulation Drilling:
Compared to core drilling, RC drilling with inherently faster penetration rates provides several benefits:
Direct drilling cost reductions in the range of 25% to 40%.
Faster completion of drill programs with quicker delivery of results.
Reduced man-hours at the drill with decreased exposure to potential accidents.
Reduced contractor activity in the mine reduces mine support burden.
Indirect cost reductions gained from a simplified sampling process.
Requires less water than diamond drilling.
RC samples are collected at the drill and sent directly to the assay lab. Unlike diamond drill core, which is generally logged, photographed, split for sample, assayed and warehoused, RC sampling requires much less handling resulting in faster assay turnaround with accompanying cost reductions. Larger volume RC samples often give more representative gold samples than split half core samples.
