Results 41 to 50 of about 123 (90)

Optimization of a Rare Earth and Aluminum Leaching Process from Weathered Crust Elution-Deposited Rare Earth Ore with Surfactant CTAB

open access: yesMinerals
Ammonium sulfate is typically employed as a leaching agent in the in situ leaching of weathered crust elution-deposited rare earth ore. However, it is associated with challenges such as low efficiency in mass transfer for rare earth (RE) leaching, high usage of the leaching agent, and prolonged leaching duration.
Xiaoyan Wu   +4 more
openaire   +1 more source

Influence of Humic Acid on the Swelling Inhibition of Clay Minerals and Process Optimization

open access: yes
Medium and heavy rare earths (REEs) are mainly from weathered crust elution-deposited rare earth ores (WREOs), where REEs are adsorbed in ionic form on the surface of clay minerals such as kaolinite, illite, halloysite, etc.
Fang Zhou   +6 more
core   +1 more source

Tracing seawater evaporation and its role in the formation of sediment-hosted stratiform copper deposits

open access: yes, 2014
This study investigates the preserved fluid contents of different generations of mineralised and unmineralised vein minerals from multiple different deposits across the Zambian Copperbelt to define the fluid physicochemical characteristics of the fluids ...
Nowecki, James Philip
core  

Investigação geoquímica e estratigráfica da Formação Ferrífera Cauê a porção centro oriental do Quadrilátero Ferrífero, MG.

open access: yes, 2014
Programa de Pós-Graduação em Evolução Crustal e Recursos Naturais. Departamento de Geologia. Escola de Minas, Universidade Federal de Ouro Preto.Formação Cauê, constituída essencialmente de itabiritos (produtos do metamorfismo de formações ferríferas ...
Alkmim, Ana Ramalho
core  

Study on the Influence Mechanism of Particle Migration on the Stability of Weathering Crust Elution-Deposited Rare Earth Ores

open access: yesMinerals
Particle migration can affect the ore bodies stability of weathering crust elution-deposited rare earth ores during leaching. It may trigger geological disasters such as landslides. Therefore, direct shear tests, microstructure characterization tests, and numerical simulation tests were adopted.
Ke Xiao   +5 more
openaire   +1 more source

Radioactivity and geochemical characteristics of cryoconite on the Tien Shan glacier. [PDF]

open access: yesSci Rep
Miroshnikov A   +16 more
europepmc   +1 more source

Home - About - Disclaimer - Privacy