Laboratory Investigations for the Role of Flushing Media in Diamond Drilling of Marble |
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Authors: | A Bhatnagar Manoj Khandelwal K U M Rao |
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Institution: | (1) Department of Mining Engineering, College of Technology and Engineering, Maharana Pratap University of Agriculture and Technology, Udaipur, 313 001, India;(2) Department of Mining Engineering, Indian Institute of Technology, Kharagpur, 721 302, India; |
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Abstract: | Marble is used as a natural stone for decorative purposes from ages. Marble is a crystalline rock, composed predominantly
of calcite, dolomite or serpentine. The presence of impurities imparts decorative pattern and colors. The diamond-based operations
are extensively used in the mining and processing of marble. Marble is mined out in the form of blocks of cuboids shape and
has to undergo extensive processing to make it suitable for the end users. The processing operation includes slabbing, sizing,
polishing, etc. Diamond drilling is also commonly used for the exploration of different mineral deposits throughout the world.
In this paper an attempt has been made to enhance the performance of diamond drilling on marble rocks by adding polyethylene-oxide
(PEO) in the flushing water. The effect of PEO added with the drilling water was studied by varying different machine parameters
and flushing media concentration in the laboratory. The responses were rate of penetration and torque at bit-rock interface.
Different physico-mechanical properties of marble were also determined. It was found that flushing water added with PEO can
substantially enhance the penetration rates and reduce the torque developed at the bit-rock interface as compared to plain
flushing water. |
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