Tailings reprocessing from Cabeço do Pião dam in Central Portugal: A kinetic approach of experimental data

• Type: Article in International Scientific Journal
• Date: 2018-07-05

Authors

Janine Figueiredo (Author) FEUP; Maria Cristina Vila (Author) FEUP; Kristina Matos (Author) FEUP; Diogo Martins (Author) FEUP; Aurora Futuro Silva (Author) FEUP; Maria de Lurdes Dinis (Author) FEUP; Joaquim Góis (Author) FEUP; Alexandre Leite (Author) FEUP; António Fiúza (Author) FEUP

Journal

Title: Journal of Sustainable Mining

Vol. 17 No. 3

Pages: 139-144

ISSN: 2543-4950

Publisher: Central Mining Institute

Indexing

Scopus - 9 Citations

Other information

Authenticus ID: P-00P-JGR

DOI: 10.1016/j.jsm.2018.07.001

Abstract (EN): The mining waste and tailing dam are object of discussion due to the accidents that occur due to a lack of control or due to interest in the remaining minerals present in these materials. Most of the old tailings dams have high contents of heavy metals which could represent potential risks to the environment or be an alternative source of some critical raw materials. The case study of the Cabeço do Pião dam in Central Portugal involved tailings from a processing plant that belonged to the Panasqueira Mine Complex, which has been in operation for over 120 years. Waste rock and mining tailings were deposited in the area until 1995, and they represent an environmental liability for the local population due to their high content of toxic metals. Tailings reprocessing can be considered as a solution that minimizes social and environmental impacts, recovers some essential minerals, such as Zn, W, and Cu which can help to offset investments made. The project design involves several stages of metal concentration, determined by experiments, as well as a model of the process. The overall model will take into account technological constraints, social-economic conditions and environmental impacts. A preliminary result of an optimization study of the kinetic approach is presented in this piece of work. © 2018

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6