scholarly journals Element Distribution and Migration Behavior in the Copper Slag Reduction and Separation Process

2021 ◽  
Vol 9 ◽  
Author(s):  
Zongliang Zuo ◽  
Yan Feng ◽  
Siyi Luo ◽  
Xinjiang Dong ◽  
Xiaoteng Li ◽  
...  
Keyword(s):  
Melting Process ◽  
Copper Slag ◽  
Slag Layer ◽  
Element Distribution ◽  
Separation Process ◽  
Elemental Distribution ◽  
Migration Behavior ◽  
Operation Parameters ◽  
And Migration ◽  
Slag Reduction

Copper slag is a solid pollutant with high recyclability. Reduction and separation are regarded as effective disposal methods. However, during the melting process, the separation and migration behavior of elements in the copper slag is complicated. Thus, the formation of pollutants cannot be controlled merely by optimizing the operation parameters. The elemental distribution and migration behavior are discussed in this work. In reduction experiments, the copper slag smelting liquid was divided into three layers: a reduction slag layer, a reactive boundary layer, and an iron ingot layer. Reduction slag and ingot iron were on the top and bottom of the liquid, respectively. Residual carbon oozed at the interface. C can react with reducible “O” atoms, which exist in 2FeO·SiO2, Fe3O4, and CuO. Meanwhile, CO was generated and overflowed from the liquid layer. After reduction by C or CO, metallic iron and copper were produced and migrated to the iron ingot layer. In the liquid, S gradually diffused into the upper layer. Some of the ZnO and CuS spilled from the liquid into the flume. After reduction, CaO·SiO2 was generated and moved to the upper layer.

scholarly journals More than XRF Mapping: STEAM (Statistically Tailored Elemental Angle Mapper) a Pioneering Analysis Protocol for Pigment Studies

2021 ◽  
Vol 11 (4) ◽  
pp. 1446
Author(s):  
Jacopo Orsilli ◽  
Anna Galli ◽  
Letizia Bonizzoni ◽  
Michele Caccia
Keyword(s):  
Cultural Heritage ◽  
Element Distribution ◽  
Elemental Distribution ◽  
X Rays ◽  
Spectral Angle Mapper ◽  
X Ray ◽  
Fluorescence Radiation ◽  
Set Up ◽  
Non Destructive ◽  
Analysis Protocol

Among the possible variants of X-Ray Fluorescence (XRF), applications exploiting scanning Macro-XRF (MA-XRF) are lately widespread as they allow the visualization of the element distribution maintaining a non-destructive approach. The surface is scanned with a focused or collimated X-ray beam of millimeters or less: analyzing the emitted fluorescence radiation, also elements present below the surface contribute to the elemental distribution image obtained, due to the penetrative nature of X-rays. The importance of this method in the investigation of historical paintings is so obvious—as the elemental distribution obtained can reveal hidden sub-surface layers, including changes made by the artist, or restorations, without any damage to the object—that recently specific international conferences have been held. The present paper summarizes the advantages and limitations of using MA-XRF considering it as an imaging technique, in synergy with other hyperspectral methods, or combining it with spot investigations. The most recent applications in the cultural Heritage field are taken into account, demonstrating how obtained 2D-XRF maps can be of great help in the diagnostic applied on Cultural Heritage materials. Moreover, a pioneering analysis protocol based on the Spectral Angle Mapper (SAM) algorithm is presented, unifying the MA-XRF standard approach with punctual XRF, exploiting information from the mapped area as a database to extend the comprehension to data outside the scanned region, and working independently from the acquisition set-up. Experimental application on some reference pigment layers and a painting by Giotto are presented as validation of the proposed method.

Comparison of Mo-10Nb Alloy Target Materials Prepared by Different Techniques

2017 ◽  
Vol 726 ◽  
pp. 316-320 ◽  
Author(s):  
Jie Gao ◽  
You Jun Lu ◽  
Jun Feng Hou ◽  
Zhen Xia Yuan ◽  
Wen Luo ◽  
...  
Keyword(s):  
Hot Pressing ◽  
Element Distribution ◽  
Raw Material ◽  
Elemental Distribution ◽  
X Ray Diffraction ◽  
X Ray ◽  
Alloy Target ◽  
Hot Pressing Sintering ◽  
Sintering Condition ◽  
Scanning Electron

The Mo powder and Nb powder was used as raw material, the Mo-10Nb alloy target was prepared by different sintering condition (non-pressure sintering and hot pressing sintering). The density, phase composition, microstructure and elemental distribution of Mo-10Nb alloy targets were determined by X-ray diffraction and scanning electron microscopy. The results showed that prepared by hot pressing Mo-10Nb alloy target density of 9.618 g/cm3, grain size 20 ~ 30μm, Mo and Nb element distribution.

Correlation between atomic rearrangement in defective fullerenes and migration behavior of encaged metal ions

2006 ◽  
Vol 73 (23) ◽  
Author(s):  
Yuta Sato ◽  
Takashi Yumura ◽  
Kazu Suenaga ◽  
Koki Urita ◽  
Hiromichi Kataura ◽  
...  
Keyword(s):  
Metal Ions ◽  
Migration Behavior ◽  
And Migration ◽  
Atomic Rearrangement

A Novel Approach of Fabricating Monodispersed Spherical MoSiBTiC Particles for Additive Manufacturing

2021 ◽  
Author(s):  
Zhenxing Zhou ◽  
Suxia Guo ◽  
Weiwei Zhou ◽  
Naoyoki Nomura
Keyword(s):  
Additive Manufacturing ◽  
Melting Process ◽  
Industrial Applications ◽  
Elemental Distribution ◽  
Drying Process ◽  
High Concentration ◽  
Novel Approach ◽  
Composition Ratios ◽  
Mesh Structures ◽  
Ejection Method

Abstract It is very challenging to fabricate spherical refractory material powders for additive manufacturing (AM) because of their high melting points and complex compositions. In this study, a novel technique, freeze-dry pulsated orifice ejection method (FD-POEM), was developed to fabricate spherical MoSiBTiC particles without a melting process. Elemental nanopowders were dispersed in water to prepare a high-concentration slurry, which was subsequently extruded from an orifice by diaphragm vibration and frozen instantly in liquid nitrogen. After a freeze-drying process, spherical composite particles with arbitrary composition ratios were obtained. The FD-POEM particles had a narrow size range and uniform elemental distribution. Mesh structures were formed within the FD-POEM particles, which was attributed to the sublimation of ice crystals. Furthermore, owing to their spherical morphology, the FD-POEM particles had a low avalanche angle of 42.6°, exhibiting good flowability. Consequently, the combination of FD-POEM and additive manufacturing has great potential for developing complex refractory components used in industrial applications.

Migration Processes in the Context of Behavioral Economics Theories

2021 ◽  
Vol 1 (4) ◽  
pp. 20-32
Author(s):  
Anastasia Sokolova ◽  
Olga Kalachikova
Keyword(s):  
Game Theory ◽  
Behavioral Economics ◽  
Evolutionary Game Theory ◽  
Scientific Community ◽  
Cognitive Biases ◽  
Empirical Studies ◽  
Evolutionary Game ◽  
Cognitive Distortion ◽  
Migration Behavior ◽  
And Migration

The aim of this article is to investigate the connection between behavioral economy and migration processes. Behavioral economics is a relatively new phenomenon in science and the fact that some research in this area has earned the Nobel Prize makes its contribution significant in the consideration of economic processes. The analysis of sources shows that in the field of Russian studies there is practically no mention of the fact that migration behavior can be explained by the behavioral economics theses. In this article, we explore several key ideas in this area: nudge theory, prospect theory, evolutionary game theory, cognitive distortion, and hedonistic adaptation. In this article, we put forward a hypothesis that migration processes can not only be explained from the standpoint of behavioral economics but can also be regulated using the tools of this direction. Behavioral economics can be the key for discovering the dynamics and true motives of migration. The analysis of information in this area shows, that a person makes decisions mainly based not on the laws of logic and rationalism. Paradoxes such as cognitive biases, etc. reduce the effectiveness of an individual's actions and provide an incentive for the scientific community to expand the number of empirical studies of migration processes within the framework of behavioral economics theories.

Isothermal annealing of selenium (Se)-implanted silicon carbide: Structural evolution and migration behavior of implanted Se

2022 ◽  
Vol 276 ◽  
pp. 125334
Author(s):  
Z.A.Y. Abdalla ◽  
E.G. Njoroge ◽  
M. Mlambo ◽  
S.V. Motloung ◽  
J.B. Malherbe ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Isothermal Annealing ◽  
Structural Evolution ◽  
Migration Behavior ◽  
And Migration

AMP‐kinase inhibitor dorsomorphin reduces the proliferation and migration behavior of colorectal cancer cells by targeting the AKT/mTOR pathway

IUBMB Life ◽  
2019 ◽  
Vol 71 (12) ◽  
pp. 1929-1936
Author(s):  
Sadaf Ghanaatgar‐Kasbi ◽  
Forouzan Amerizadeh ◽  
Farzad Rahmani ◽  
Seyed Mahdi Hassanian ◽  
Majid Khazaei ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Cancer Cells ◽  
Kinase Inhibitor ◽  
Mtor Pathway ◽  
Migration Behavior ◽  
Amp Kinase ◽  
Colorectal Cancer Cells ◽  
And Migration ◽  
Proliferation And Migration

scholarly journals Effect of Prior Rolling on Microstructures and Property of Diffusion-Bonded Mg/Al Alloy

2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Yunlong Ding ◽  
Jialian Shi ◽  
Dongying Ju
Keyword(s):  
Tensile Strength ◽  
Electron Microscope ◽  
Magnesium Alloy ◽  
Element Distribution ◽  
Annealing Process ◽  
Al Alloy ◽  
Elemental Distribution ◽  
Electron Probe Micro Analyzer ◽  
Cast Magnesium Alloy ◽  
Cast Magnesium

In this study, magnesium alloy AZ91, which was cast by double roll casting system, was rolled by a rolling mill. Then, rolled magnesium alloy and magnesium alloy without being rolled were, respectively, welded with aluminum alloy 6061 by diffusion bonding method. Furthermore, annealing process was applied to refine the microstructure and improve mechanical property. The microstructure and elemental distribution of diffusion zone were investigated with a scanning electron microscope (SEM), an electron probe micro analyzer (EPMA), and a transmission electron microscope (TEM). In addition, hardness and tensile strength were measured. When cast magnesium alloy was used, the width of diffusion layers was wider than that with rolled magnesium alloy. And the width increased with the increasing annealing temperatures. Element distribution of specimens with annealing was more uniform than that did not undergo annealing process. Furthermore, tensile strength turns to be strongest after annealing at 250°C. And the strength of the specimens with rolled magnesium alloy was stronger than that with cast magnesium alloy which was not rolled.

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