Reverse Circulation RC Drill Button Bit 130mm for Sample Blasting Hole Drilling

• Transport Package: Wooden Box
• Specification: 124 127 130 133
• Trademark: ROSCHEN
• Origin: China
• Model NO.: 124 127 130 133
• HS Code: 84314320
• Production Capacity: 500000

Product Description

Reverse Circulation RC Drill Button Bit 130mm for Sample Blasting Hole Drilling 


Reverse Circulation RC Drill Button Bit for Sample Blasting Hole Drilling. RC hammers and bits are used in hole drilling in mines, hydrology and water well, geothermal well, geothermal air conditioning well, geologic exploration, complicated gravel stratum, etc. Especial suitable for complicated formation (Formation loose, difficult to drilling and unstable of hole wall), exhausting for deep hole, environment protection.
               

Reverse Circulation RC Drill Button Bit for Sample Blasting Hole Drilling

Reverse Circulation (RC) drilling is used to collect mineral and rock samples quickly and efficiently using a large rotary drill and air compressor. Reverse Circulation (or RC) drilling is one of the most frequently used methods of drilling used across the world as it is more cost effective and efficient then other methods of drilling. When compared to RAB (Rotary Air Blast) and diamond drilling, RC drilling seems to be somewhere in the middle when it comes to cost, time, quality of samples, technique and depth.



Applications:
1. RC drilling is a technique used in the majority of stages of mine development.
2. 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 or air-core drilling when trying to reach great depths, but RC drilling is slower and more expensive than either of these two methods.
3. RC drilling is also consistently used during in-pit grade control and the development stage of an ore body.



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.

The drill cuttings travel around the inside of the cyclone until they fall through an opening at the bottom and are collected in a sample bag. For any drill hole there will be a large number of sample bags, each one marked to record the location and drilling depth that the sample was obtained.

The collected series of sample bag cuttings are later taken for analysis to determine the mineral composition of the drill hole. The analysis results of each individual bag represents the mineral composition at a particular sample point in the drill hole. Geologists can then survey the drilled ground analysis and make decisions about the value of the overall mineral deposit.


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.
 

ROSCHEN RC Hammers Specifications
Hammer Size	Hammer	Bit Shank	ROSCHEN Code	Hole Range (mm)	External Diameter (mm)	Length (without bit) mm	Weight (N.W.) kgs	Connection Thread	Working Pressure
3"	RE531	RE531	ROS RC 30	84-100	81	1069	29	3" Remet	1.0-3.0Mpa
3"	RE035	RE035	ROS RC 35	84-105	85	1075	35	3" Remet	1.0-3.0Mpa
4 1/2"	RE004	RE004	ROS RC 40	111-127	107	1252	52	3.5"-4" Remet 4" Metzke	1.0-3.0Mpa
4 1/2"	RE540	RE540	ROS RC 45	111-127	107	1252	52	3.5"-4" Remet 4" Metzke	1.0-3.0Mpa
5"	RE040	RE040	ROS RC 50	113-130	109.5	1191	57	3.5"-4" Remet 4" Metzke	1.0-3.0Mpa
5"	RE542	RE542	ROS RC 50	113-130	109.5	1191	57	3.5"-4" Remet 4" Metzke	1.0-3.0Mpa
5"	RE543	RE543	ROS RC 50	120-135	116	1191	62	3.5"-4" Remet 4" Metzke	1.0-3.0Mpa
5"	RE545	RE545	ROS RC 50	122-135	117.5	1261	65	4"-4.5"Remet 4"-4.5" Metzke	1.5-3.5Mpa
5 1/2"	RE547	RE547	ROS RC 55	130-146	124.5	1270	71	4.5"Remet 4.5" Metzke	1.5-3.5Mpa
5 1/2"	RE052	RE052	ROS RC 55	130-146	124.5	1270	71	4.5"Remet 4.5" Metzke	1.5-3.5Mpa
5 3/4"	RE054	RE054	ROS RC 55	130-146	124.5	1270	85	4.5"Remet 4.5" Metzke	1.5-3.5Mpa
5 3/4"	RE140	RE140	ROS RC 55	130-146	124.5	1270	85	4.5"Remet 4.5" Metzke	1.5-3.5Mpa
5"	PR40	PR40	ROS RC 50	124-142	120.5	1362	80.5	3.5"-4.5" Remet 3.5"-4.5" Metzke	1.5-3.5Mpa
5 1/2"	PR52	PR52	ROS RC 55	126-142	121	1227	68.5	4"-4.5"Remet 4"-4.5" Metzke	1.5-3.5Mpa
5 1/2"	PR52R	PR52/PR52R	ROS RC 55	130-146	124	1225	65	4"-4.5"Remet 4"-4.5" Metzke	1.5-3.5Mpa
5 1/2"	PR54	PR54	ROS RC 55	135-150	130	1294	84.5	4.5"Remet 4.5" Metzke	1.5-3.5Mpa
6"	MX5456	MX5456	ROS RC 60	136-150	132	1362	90	4.5"Remet 4.5" Metzke	1.5-3.5Mpa
6"~6 1/2"	RC62/RC62R	RC62/RC62R	ROS RC 65	152-190	146	1320	110	As Request	1.5-3.5Mpa
8"	RC82/RC82R	RC82/RC82R	ROS RC 80	190-250	180	1395	185	As Request	1.5-3.5Mpa
10"	RC100/RC100R	RC100/RC100R	ROS RC 100	250-370	240	1528	328	As Request	1.5-3.5Mpa
Notes:
Metzke, Remet thread is available!
Any special type shank of RC Hammer will be available by requests.

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.