Next Article in Journal
Production of Surface Layer with Gradient Microstructure and Microhardess on Copper by High Pressure Surface Rolling
Next Article in Special Issue
Leaching Chalcopyrite with High MnO2 and Chloride Concentrations
Previous Article in Journal
Precipitation during γ-ε Phase Transformation in Biomedical Co-Cr-Mo Alloys Fabricated by Electron Beam Melting
Previous Article in Special Issue
Leaching Kinetics of Arsenic Sulfide-Containing Materials by Copper Sulfate Solution
Open AccessArticle

Assessment of Silica Recovery from Metallurgical Mining Waste, by Means of Column Flotation

1
Area Academica de Ciencias de la Tierra y Materiales, Universidad Autonoma del Estado de Hidalgo, Carretera Pachuca-Tulancingo km 4.5, Mineral de la Reforma, Hidalgo C.P. 42184, Mexico
2
Escuela Superior de Apan, Universidad Autonoma del Estado de Hidalgo. Carr. Apan-Calpulalpan km. 8, Apan, Hidalgo C.P. 43920, Mexico
3
Departamento de Ingenieria Quimica y Procesos de Minerales, Facultad de Ingenieria, Universidad de Antofagasta, Antofagasta 1240000, Chile
4
Departamento de Ingenieria Metalurgica y Minas, Universidad Catolica del Norte, Antofagasta 1270709, Chile
5
Department of Mining, Geological and Cartographic Department, Universidad Politecnica de Cartagena, 30202 Murcia, Spain
*
Authors to whom correspondence should be addressed.
Metals 2020, 10(1), 72; https://doi.org/10.3390/met10010072
Received: 20 November 2019 / Revised: 27 December 2019 / Accepted: 27 December 2019 / Published: 2 January 2020
(This article belongs to the Special Issue Advances in Mineral Processing and Hydrometallurgy)
The generation of mining waste commonly led to the use of spaces for its disposal. Challenges like mitigating the damage to surrounding communities have promoted the need to reuse, recycle and/or reduce their generation. Besides, these residues may become a source of materials, which are capable of being recovered and reused in several industries, minimizing the environmental impact. In the mining region of Pachuca, Mexico, waste from the mining industry have been generated for more than 100 years, which have a high SiO2 content that can be recovered for various industrial applications. This work aims to recover silica from a material of the Dos Carlos dam. A columnar system composed of two-stage of cleaning was used, considering a JLT (surface liquid rate) value of 0.45 and 0.68 cm/s, respectively; while the Jg (surface gas rate) value was 0.30 cm/s for both stages. Similar bubble sizes in the range of Jg 0.10 to 0.30 cm/s, with values between 0.14 and 0.16 cm in the first stage, and 0.05 to 0.06 cm in the second one. This provided a recovery of 75.10% for all the allotropic phases of silica (quartz, trydimite, and cristobalite) leaving a concentration of 24.90% of a feldspathic phase (orthoclase), as flotation tails. View Full-Text
Keywords: silica recovery; column flotation; mining waste; waste reprocessing silica recovery; column flotation; mining waste; waste reprocessing
Show Figures

Figure 1

MDPI and ACS Style

Salinas-Rodriguez, E.; Flores-Badillo, J.; Hernandez-Avila, J.; Cerecedo-Saenz, E.; Gutierrez-Amador, M.P.; Jeldres, R.I.; Toro, N. Assessment of Silica Recovery from Metallurgical Mining Waste, by Means of Column Flotation. Metals 2020, 10, 72.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop