Results 21 to 30 of about 1,843,878 (304)

Numerical Investigation of the Enhanced Stirring Characteristics of a Multi-Lance Top-Blowing Continuous Converting Furnace for Lance Arrangement and Variable-Velocity Blowing

open access: yesEnergies, 2023
Oxygen lances are key equipment for copper converters. The effect of the lance arrangement on the mixing of a gas–slag two–phase is discussed using numerical simulation and experimental verification with a water model, and the stirring characteristics ...
Wenjie Li   +8 more
doaj   +1 more source

Isolation of cationic and neutral (allenylidene)(carbene) and bis(allenylidene)gold complexes. [PDF]

open access: yes, 2016
The one-electron reduction of a cationic (allenylidene)[cyclic(alkyl) (amino)carbene]gold(i) complex leads to the corresponding neutral, paramagnetic, formally gold(0) complex.
Apeloig, Yitzhak   +7 more
core   +2 more sources

Alkali-metal-mediated zincation (AMMZn) meets N-heterocyclic carbene (NHC) chemistry : Zn–H exchange reactions and structural authentication of a dinuclear Au(I) complex with a NHC anion [PDF]

open access: yes, 2013
Merging two evolving areas in synthesis, namely cooperative bimetallics and N-heterocyclic carbenes (NHCs), this study reports the isolation of the first intermediates of alkali-metal-mediated zincation (AMMZn) of a free NHC and a Zn–NHC complex using ...
Aldeco-Perez   +55 more
core   +1 more source

Enhanced sulfidation xanthate flotation of malachite using ammonium ions as activator

open access: yesScientific Reports, 2017
In this study, ammonium ion was used to enhance the sulfidation flotation of malachite. The effect of ammonium ion on the sulfidation flotation of malachite was investigated using microflotation test, inductively coupled plasma (ICP) analysis, zeta ...
Dandan Wu   +4 more
doaj   +1 more source

Electrostatic Binding of Metal Complexes to Electrode Surfaces Coated with Highly Charged Polymeric Films [PDF]

open access: yes, 1980
Previous reports in which metal complexes have been attached to electrode surfaces coated with polymeric molecules have depended upon the formation of covalent or coordination bonds in the attachment procedure (1-4).
Anson, Fred C., Oyama, Noboru
core   +2 more sources

Triggering redox activity in a thiophene compound: radical stabilization and coordination chemistry [PDF]

open access: yes, 2006
The synthesis, metalation, and redox properties of an acyclic bis(iminothienyl)methene L− are presented. This π-conjugated anion displays pronounced redox activity, undergoing facile one-electron oxidation to the acyclic, metal-free, neutral radical L ...
Davison   +46 more
core   +2 more sources

Preparation of Potassium Dichromate Crystals from the Chromite Concentrate by Microwave Assisted Leaching

open access: yesCrystals, 2017
In the present investigation, the oxidizing roasting process of chromite with sodium carbonate to prepare potassium dichromate crystals was studied in the microwave field with air, by heating the chromite and sodium carbonate.
Hua Liu   +5 more
doaj   +1 more source

Study on Pyrolysis Pretreatment Characteristics of Spent Lithium-Ion Batteries

open access: yesSeparations, 2023
In recent years, the rapid development of the new energy vehicle industry has led to an increase in the production of used lithium-ion batteries. The recycling of waste lithium-ion batteries is expected to alleviate the shortage of valuable metals in ...
Hao Wang   +5 more
doaj   +1 more source

Development of Peptoid-Based Ligands for the Removal of Cadmium from Biological Media. [PDF]

open access: yes, 2015
Cadmium poisoning poses a serious health concern due to cadmiums increasing industrial use, yet there is currently no recommended treatment. The selective coordination of cadmium in a biological environment-i.e.
Francis, Matthew   +2 more
core   +2 more sources

Process Mineralogy Analysis of Copper-zinc Sulfide Ore from the Simao Region, Yunnan Province

open access: yesYankuang ceshi, 2014
There are large amounts of refractory copper-zinc polymetallic sulfide ore resources in the Simao region of Yunnan Province. Traditional mineral identification under microscope is difficult to automatically accurately determine copper, zinc and other ...
XIE Hai-yun   +5 more
doaj   +2 more sources

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