University of Oulu

Zongxian Zhang, Kinetic energy and its applications in mining engineering, In International Journal of Mining Science and Technology, Volume 27, Issue 2, 2017, Pages 237-244, ISSN 2095-2686, https://doi.org/10.1016/j.ijmst.2017.01.009. (http://www.sciencedirect.com/science/article/pii/S2095268617300551) Keywords: Kinetic energy; Rock fragmentation; Open pit blasting; Sublevel caving mining; Energy efficiency

Kinetic energy and its applications in mining engineering

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Author: Zongxian, Zhang1,2
Organizations: 1Department of Arctic Technology, University Centre in Svalbard, Longyearbyen 9171, Norway
2Oulu Mining School, University of Oulu, Oulu 90015, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.8 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe201710098926
Language: English
Published: Elsevier, 2017
Publish Date: 2017-10-09
Description:

Abstract

Reduction of energy consumption in comminution is of significant importance in mining industry. To reduce such energy consumption the energy efficiency in an individual operation such as blasting must be increased. By using both new investigations and previous experimental results, this paper demonstrates that (1) kinetic energy carried by moving fragments in rock fracture is notable and it increases with an increasing loading rate; (2) this kinetic energy can be well used in secondary fragmentation in crushing and blasting. Accordingly, part of the muck pile from previous blast should be left in front of new (bench) face in either open pit or underground blasting. If so, when new blast occurs, the fragments from the new blast will collide with the muck pile left from the previous blast, and the kinetic energy carried by the moving fragments will be partly used in their secondary fragmentation.

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Series: International journal of mining science and technology
ISSN: 2095-2686
ISSN-E: 2095-2686
ISSN-L: 2095-2686
Volume: 27
Issue: 2
Pages: 237 - 244
DOI: 10.1016/j.ijmst.2017.01.009
OADOI: https://oadoi.org/10.1016/j.ijmst.2017.01.009
Type of Publication: A1 Journal article – refereed
Field of Science: 218 Environmental engineering
Subjects:
Copyright information: © 2017 Published by Elsevier B.V. on behalf of China University of Mining & Technology. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
  https://creativecommons.org/licenses/by-nc-nd/4.0/