Results 81 to 90 of about 3,316 (202)

Treatment of copper ores containing atacamite by the brisa process

, 2003
El tratamiento actual de minerales que contienen atacamita y sulfures secundarios de cobre tiene lugar según el proceso TL. La recuperación de cobre en estos procesos es escasa (inferior al 50 %, para tiempos de operación superiores a seis meses). Para mejorar el rendimiento de extracción de cobre, se plantean, en este trabajo, diferentes alternativas ...
Carranza, F., Mazuelos, A., Romero, R.
openaire   +1 more source

Joint effects of elevated copper and temperature in juvenile Tambaqui exposed in black and white waters of the Amazon

Journal of Fish Biology, EarlyView.
Abstract This study aimed to investigate how exposure to elevated water temperature and metal concentration jointly affect the physiology of Amazonian fish. Aboard a research vessel in the Amazon, we evaluated the effects of water temperature (river T°C at 31.5°C and a + 4°C increase to 35.5°C) and of 3‐h copper (Cu) exposure (up to 600 μg/L) in ...
Anne Crémazy, Carolyn Morris, Susana Braz‐Mota, Chris M. Wood, Rafael M. Duarte, Ora E. Johannsson, Adalberto L. Val   +6 more
wiley   +1 more source

Impacts of reclamation approaches on plant establishment in an arid environment during copper mine revegetation

Restoration Ecology, EarlyView.
Abstract Introduction Revegetation using native vegetation is a commonly used technique to reclaim landscapes degraded by mining activities. Revegetation efforts in the arid Southwestern United States face physical, geochemical, hydrological, and biological challenges unique to drylands.
Sierra T. Lauman, Catherine G. Fontana, Elise S. Gornish, Julia W. Neilson   +3 more
wiley   +1 more source

The Development of Innovated Complex Process for Treatment of Old Flotation Tailings of Copper-Zinc Sulfide Ore

Molecules
The possibility of selective Cu and Zn leaching from the sample of old pyrite tailings, which is one of the most widespread types of solid waste forming during non-ferrous metal production, using sulfuric acid solutions and water was studied.
Khussain Valiyev, Aliya Bugubaeva, Aleksandra Nechaeva, Alena Artykova, Vitaliy Melamud, Devard Stom, Anna Boduen, Aleksandr Bulaev   +7 more
doaj   +1 more source

A review of Dolochar reuse methods (waste from sponge iron factories)

سلامت و محیط, 2021
Background and Objective: Dolochar is the residual ash from the production of sponge iron in the process of direct reduction of iron ore by the coal-based method. In Iran, this waste is transported to the nearest landfill.
Zahra Khebri, Fatemeh Sadeghian, Fahimeh Faqhihi   +2 more
doaj  

The Monetary Policy–Commodities Nexus: A Survey

Journal of Economic Surveys, Volume 40, Issue 2, Page 1050-1082, April 2026.
ABSTRACT This survey synthesizes evidence on the bidirectional links between commodity markets and monetary policy. On the commodities‐to‐policy side, we review how shocks to energy, food, and metals pass through to inflation, inflation expectations, economic activity, and financial stability in state‐dependent ways that vary by shock type, exposure ...
Martin T. Bohl, Niklas Humann, Pierre L. Siklos   +2 more
wiley   +1 more source

Bimetallic (NiFe) and Trimetallic (NiFeCr) Nanoalloys from Metal Oxides Using a Microwave Hydrogen Plasma

Advanced Engineering Materials, Volume 28, Issue 5, 4 March 2026.
Bimetallic (NiFe) and trimetallic (NiFeCr) nanoalloys (NAs) are synthesized using corresponding oxide mixtures using microwave hydrogen plasma within a few milliseconds. The process simultaneously 1) reduces metal oxides to metals; 2) downsizes the particles from micrometers to nanometers; and 3) blends the metals to form NAs.
Sachin Kumar, Mohammad Kazemi, Zichang Xiong, Thomas Cameron, Julian Held, Uwe Kortshagen   +5 more
wiley   +1 more source

Design Matters: How Cell Architecture Shapes the Performance, Cost, and Environmental Impact of Battery Technologies

Advanced Energy Materials, Volume 16, Issue 10, 11 March 2026.
This study introduces a multidimensional framework integrating electrical performance, cost, and life cycle assessment for 140 real and virtual battery cells. Results show that LFP offers low emissions and costs, sodium‐ion excels in resource efficiency, and pouch housings and higher energy densities effectively reduce environmental burdens.
Nicolas Peter Kaiser, Florian Hölting, Duc Minh Nguyen, Martin Florian Börner, Mark Junker, Moritz Fabian Schütte, Florian Ringbeck, Dirk Uwe Sauer   +7 more
wiley   +1 more source

Developing a bulk circuit suitable for chalcopyrite-pyrite ores with elevated pyrite content in copper-gold ore treatment [PDF]

, 2015
Copper-gold-pyrite ore types (with elevated pyrite content) are typically found in complex ore bodies which require a sequential flotation method to recover two products (copper - gold and pyrite - gold). Operating plants such as Telfer (Western Australia), Ok Tedi (Papua New Guinea) and Batu Hijau (Indonesia) use a lime circuit with selective ...
openaire   +2 more sources

Indigenous Perspectives of Mining in Fiji: The Relevance of Putting Indigenous Knowledge at the Core of Development Initiatives

Business Strategy &Development, Volume 9, Issue 1, March 2026.
ABSTRACT Mining is crucial to the development of developing countries. This article studies the perspective of Indigenous peoples of Fiji (iTaukei) on the impact of mining on their development. Considering Indigenous knowledge at the core of this research, a unique qualitative methodology that integrates Vakumuni Vuku ni Vanua (gathering wisdom of the ...
Eduardo Ordonez‐Ponce, Jekope Maiono, Penina Waqatabu   +2 more
wiley   +1 more source