Air consumption of the YQ150 down-the-hole drill rig


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This paper calculates the energy required to drill a hole (in kWh/m drilled) for compressed air, hydropowered and electric drills used in narrow, dipping, tabular orebody stopes found in

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where: D Air consumption is the rated delivery of the compressor or the air consumption of the drill at maximum pressure, whichever is less. D Annulus area is the area between the hole

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In this study, CFD simulations coupled with dynamic meshing are utilized to simulate the air flow and piston movement inside the large-diameter DTH hammers. The

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Accurately measuring the air consumption of a down - the - hole rock drill is essential for optimizing its performance. There are several methods to measure air consumption.

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About Air consumption of the YQ150 down-the-hole drill rig

About Air consumption of the YQ150 down-the-hole drill rig

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6 FAQs about [Air consumption of the YQ150 down-the-hole drill rig]

What is a DTH drill rig?

A down-the-hole drill, usually called DTH Drilling Rig, is basically a mini jackhammer screwed on the bottom of a drill string. The speedy hammer activity breaks hard stone into little flakes and dust and can be dismissed evident by the air exhaust in the DTH hammer.

Can a DTH hammer be used in a rotary drill rig?

A TSJ-2600 rotary drill rig (see Fig. 22 a) and two LUY-400-30 air compressors with total working capacity up to 80 m 3 /min and 3 MPa were utilized in cooperation with the DTH hammer. Operation of the hammer was recorded on-site and hammer impact frequency was monitored in real-time using software Audacity.

Is the gq400 DTH hammer suitable for reduced air consumption rate?

The GQ400 DTH hammer designed for reduced air consumption rate is in good working condition and exhibited performance as expected by the numerical simulations.

How fast should a drill hole be cleaned?

Hole cleaning should be taken very seriously when selecting hole size for any particular application. Recommended up hole air velocity is between 4,000 and 7,000 feet (1220 and 2135 m) per minute. Uphole velocity (annular velocity) is dictated by the compressor output (CFM), bit diameter and drill rod diameter.

What is the recommended uphole air velocity?

Recommended up hole air velocity is between 4,000 and 7,000 feet (1220 and 2135 m) per minute. Uphole velocity (annular velocity) is dictated by the compressor output (CFM), bit diameter and drill rod diameter. Annular velocity below 4,000 FPM (1220 MPM) can create the following:

Does upper end diameter affect air consumption?

In Fig. 12 b maximum stroke decreases with respect to a larger upper-end diameter. Air consumption tends to increase slightly when the upper-end diameter increases up to 295 mm but decreases lightly as the diameter continues to increase.

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