Results 11 to 20 of about 51,904 (265)

Replacement of Sand with Bauxite Mining Waste in Concrete Production [PDF]

Journal of Materials and Engineering Structures, 2019
The use of natural sand as fine aggregate in concrete is becoming problematic due to scarcity and pressure on mining of the resource. Alternate sources such as the use of industrial waste as replacement of natural sand in concrete are gaining popularity ...
Humphrey DANSO, Joseph Kent BOADI
doaj   +2 more sources

A comparative review of the mineralogical and chemical composition of African major bauxite deposits

Heliyon, 2023
Bauxite, which is the main raw material that aluminium is extracted from was discovered in Africa in the early 1900s. Currently, the production and export capacities of the African Bauxite ore are about a third of the World's total capacity. However, the
N. Zainudeen, L. Mohammed, A. Nyamful, D. Adotey, S. Osae   +4 more
semanticscholar   +1 more source

Bioleaching of Scandium from Bauxite Residue using Fungus Aspergillus Niger

Waste and Biomass Valorization, 2023
Bauxite residue (BR) is the main by-product of the alkaline production of alumina from bauxite containing significant amounts of valuable metals such as scandium that belongs to rare-earth elements (REEs), classified by the European Community as critical
K. Kiskira, T. Lymperopoulou, I. Lourentzatos, L. Tsakanika, Charalampos Pavlopoulos, K. Papadopoulou, K. Ochsenkühn, Fotios Tsopelas, E. Chatzitheodoridis, G. Lyberatos, M. Ochsenkühn-Petropoulou   +10 more
semanticscholar   +1 more source

Extraction of alumina and silica from high-silica bauxite by sintering with sodium carbonate followed by two-step leaching with water and sulfuric acid

RSC Advances, 2023
Efficient utilization of high-silica bauxite and minimization of bauxite residue are of great significance for the sustainable development of the alumina industry.
Yue Sun, Aifang Pan, Yuzhao Ma, Jie Chang   +3 more
semanticscholar   +1 more source

Coupling microbial and abiotic amendments accelerates in situ remediation of bauxite residue at field scale.

Science of the Total Environment, 2023
Bauxite residue is a highly saline-sodic tailings material formed as a by-product of the Bayer process for alumina production. In situ remediation of bauxite residue has the potential to provide an effective means for accelerated rehabilitation of ...
G. Scullett-Dean, Katherine Stockwell, L. Myers, H. Nyeboer, Benjamin Moreira-Grez, T. Santini   +5 more
semanticscholar   +1 more source

REE Geochemical Characteristics of the Huri Karst-Type Bauxite Deposit, Irano–Himalayan Belt, Northwestern Iran

Minerals, 2023
The Huri bauxite deposit is located 40 km northwest of Maragheh City, East Azerbaijan province, northwestern Iran. Bauxite horizons at Huri develop within karstic depressions and sinkholes of carbonate footwalls of the Ruteh Formation, overlain by ...
A. Abedini, M. Khosravi
semanticscholar   +1 more source

Low-Temperature Treatment of Boehmitic Bauxite Using the Bayer Reductive Method with the Formation of High-Iron Magnetite Concentrate

Materials, 2023
The Bayer process is the main method of alumina production worldwide. The use of low-quality bauxites for alumina production results in the formation of a significant amount of technogenic waste—bauxite residue (BR).
A. Shoppert, D. Valeev, I. Loginova, D. Pankratov   +3 more
semanticscholar   +1 more source

Provenance and Tectonic Evolution of Bauxite Deposits in the Tethys: Perspective From Random Forest and Logistic Regression Analyses

Geochemistry Geophysics Geosystems, 2023
Developments in Earth system research have led to widespread interest in multi‐sphere interactions that may have controlled bauxite formation. Although karst bauxite ores are abundant in the Tethyan Metallogenic Domain (TMD), their genesis and ...
Jintao Zhou, Wenchao Yu, Wei Wei, Mingyu Yang, Yuansheng Du   +4 more
semanticscholar   +1 more source

Alumosilicate ceramic proppants based on natural refractory raw materials [PDF]

, 2017
The sintering-strengthening effect of the additions of the highly ferrous bauxite (with Fe[2]O[3] content of 20-25 % in the calcined state) in the compositions with refractory clays was established.
Burihina, M. A., Devyashina, Larisa Pavlovna, Kisner, A. S., Pashenko, N. V., Vakalova, Tatyana Viktorovna   +4 more
core   +2 more sources

Abundance and Genetic Significance of Lithium in Karst-Type Bauxite Deposits: A Comparative Review

Minerals, 2023
Palaeo weathering during the Cretaceous–Eocene interval is most favorable for bauxitization, i.e., transport and deposition in traps on the karstified surfaces of the Mediterranean karst bauxite belt, including the Parnassos–Ghiona bauxite deposit ...
M. Economou-Eliopoulos, C. Kanellopoulos
semanticscholar   +1 more source