Results 31 to 40 of about 412,588 (342)
Longer thaw seasons increase nitrogen availability for leaching during fall in tundra soils [PDF]
, 2016 Climate change has resulted in warmer soil temperatures, earlier spring thaw and later fall freeze-up, resulting in warmer soil temperatures and thawing of permafrost in tundra regions.
Bowden, William B. +3 more
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Continuous Leaching Test of Ion-type Rare Earth Ore at Different Depths
Kuangchan zonghe liyong, 2023 This is an essay in the field of metallurgical engineering. The ion-type rare earth ore in Ganzhou was treated as the research object. Continuous stirring leaching and column leaching were used to study the leaching of rare earth and impurity elements in
Chao Li +5 more
doaj +1 more source
Bulletin of the Mineral Research and Exploration, 2021 In this study, leaching experiments were performed for extraction of magnesium from a chromite beneficiation plant tailing predominantly containing lizardite.
Bahri Ersoy +4 more
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Oxygen application to chloride leaching of complex sulfide ores [PDF]
, 1987 The study investigates leaching of complex sulfide ores with simultaneous regeneration of the leaching solution and removal of dissolved iron to balance the iron concentration in the leaching process.
Chou, Kuo Tung
core
Advanced Engineering Materials, EarlyView.This study presents micropleated filters manufactured by needleless electrospinning. Nanofibers are deposited onto uniaxially pre‐stretched substrates that contract upon release, forming densely packed micropleats. This architecture increases effective surface area without enlarging the filter size, achieving quality factors comparable to those of ...
Aleksandr Fadeev +6 more
wiley +1 more source
Research progress of non-cyanide gold leaching in gold mines
工程科学学报, 2021 With the exhaustion of easy-to-treat gold ore resources, gold ores containing arsenic, carbon, high sulfur, and ultrafine particles have become the focus of gold mining.
Ke-bo PENG +7 more
doaj +1 more source
Heap Leaching Simulation [PDF]
IFAC Proceedings Volumes, 1998 Abstract Ore leaching techniques combined with solution treatment procedures offer exceptional conditions to produce high purity metal from very low-grade ore sources. Essential percentage of the world copper production is based on the heap and dump leaching techniques.
Jämsä-Jounela, Sirkka-Liisa +1 more
openaire +2 more sources
Contributions to predicting contaminant leaching from secondary materials used in roads [PDF]
, 2004 Slags, coal ashes, and other secondary materials can be used in road construction. Both traditional and secondary materials used in roads may contain contaminants that may leach and pollute the groundwater.
Apul, Defne S
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Advanced Functional Materials, EarlyView.In this work, a magnetic core‐shell catalyst (HOF‐on‐Fe3O4/ZIF‐67) is successfully synthesized, consisting of a metal–organic framework (ZIF‐67) with magnetic Fe3O4 as the core and a porous hydrogen‐bonded organic framework (HOF) as the shell. The catalyst efficiently activated peroxymonosulfate, resulting in rapid and effective removal of water ...
Yingying Du +4 more
wiley +1 more source
MetalsCompared with vanadium extraction by sodium roasting followed by water leaching, the calcification roasting–sulfuric acid leaching method is considered a promising approach for the comprehensive utilization of vanadium titanomagnetite, as it avoids the ...
Jianli Chen +10 more
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