In:
Materials Science Forum, Trans Tech Publications, Ltd., Vol. 898 ( 2017-6), p. 2455-2463
Abstract:
Substance flow analysis (SFA) is an established method to analyze the structure and characterization of resource flows or substance flows. Lanthanum (La) is an important type of light rare earth element, which is widely used in the fields of glass, luminescence, catalyst, agriculture, etc. This paper conducts a static SFA for lanthanum in China in 2002 and 2011, including different life cycle stages, e.g., exploitation, concentration, smelting, manufacture, use and disposal. Mining utilization efficiency, smelting ratio, export rate, ratio of scrap to raw material in 2002 and 2011 were comparatively analyzed. The results indicated that the utilization efficiency of La in the production stage of rare earth concentrates increased in 2011 relative to the value in 2002 by 80%, and the utilization efficiency of La in the manufacturing stage increased by 74%. The results also showed that although the mining utilization rate was increased, the resource efficiency was still low and how to increase the resource efficiency is a significant issue for Chinese rare earth industry. On the based of the results, some advices were also proposed, which will provide useful reference information for the green development of Chinese rare earth industry.
Type of Medium:
Online Resource
ISSN:
1662-9752
DOI:
10.4028/www.scientific.net/MSF.898
DOI:
10.4028/www.scientific.net/MSF.898.2455
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2017
detail.hit.zdb_id:
2047372-2
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