NDLI: Application of Laser-Induced Breakdown Spectroscopy for in-situ measurement of metal grade for seafloor mineral processing

Content Provider	IEEE Xplore Digital Library
Author	Nakajima, Yasuharu Thornton, Blair Sato, Takumi
Copyright Year	2015
Description	Author affiliation: Institute of Industrial Science, The University of Tokyo, Meguro-ku, Japan (Thornton, Blair; Sato, Takumi) \|\| Ocean Engineering Department, National Maritime Research Institute (NMRI), Mitaka, Japan (Nakajima, Yasuharu)
Abstract	This paper describes experiments carried out to investigate the application of Laser-Induced Breakdown Spectroscopy (LIBS) to measure the metal grade of seafloor massive sulfides in situ as part of a deep-sea mineral processing system. In the experiment, particles of sulfide minerals containing metallic elements such as copper, lead and zinc were used. The measurements were performed in bulk liquids containing ore particles dispersed in slurry and on particles that were fixed on an aluminum plate submerged in water. Well-resolved spectra were obtained from both the dispersed and the fixed particles. However, the ratio of well-resolved spectra was significantly higher for the fixed particles than those dispersed in slurry. The results are promising for in-situ assessment of metal grade during seafloor mineral processing, but suggest that it is necessary to manipulate the particles so that they are concentrated near the focal point of the laser and do not obstruct the laser path.
Starting Page	1
Ending Page	6
File Size	2535772
Page Count	6
File Format	PDF
ISBN	9780933957435
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-10-19
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	MTS
Subject Keyword	Atmospheric measurements Particle measurements Materials processing Metals Slurries Ores metal grade seafloor massive sulfide mineral processing laser-induced breakdown spectroscopy in-situ measurement
Content Type	Text
Resource Type	Article

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