Results 41 to 50 of about 17,379,007 (276)

Turning Nd‐Fe‐B Swarf Into High‐Value Bulk Feedstocks via Sustainable Hydrogen Plasma: From Rare‐Earth Oxides to Metals and Hydrides

open access: yesAdvanced Materials, EarlyView.
Oxidized Nd‐Fe‐B magnet swarf is transformed into valuable bulk feedstock through a single‐step hydrogen plasma process. The reaction converts complex rare‐earth‐containing waste into separated metallic, oxide, and hydride fractions without acid leaching.
Naritai Chimed   +9 more
wiley   +1 more source

Performance of sulfur/steel slag composite matrix in removing nitrate from surface water with low-carbon content

open access: yesGongye shui chuli
The accumulation of nitrogen pollutants can easily lead to eutrophication of water bodies, and NO3--N is one of the main nitrogen pollutants. A composite matrix of steel slag and elemental sulfur was used for sulfur autotrophic denitrification.
PENG Xianchun   +5 more
doaj   +1 more source

Compressive Strength and Microstructure Properties of Alkali‐Activated Systems with Blast Furnace Slag, Desulfurization Slag, and Gypsum [PDF]

open access: yesAdvances in Civil Engineering, 2018
This study investigates the effect of desulfurization slag (DS) and gypsum (G) on the compressive strength and microstructure properties of blast furnace slag‐(BFS‐) based alkali‐activated systems. DS is produced in a Kambara reactor process of molten iron produced in a steel production process.
Bong-Suk Cho, Kyung-Mo Koo, Se-Jin Choi
openaire   +2 more sources

Exploring Influence of MgO/Na2O on Melting Characteristics and Viscosity–Temperature Characteristics of Coal Slags Under Entrained Flow Gasification Condition

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Characteristics of high alkali in Zhundong coal ash may cause ash‐related slag discharge problems at entrained‐flow‐bed (EFB) gasifier. In this study, through exploring melting characteristics and viscosity–temperature characteristics, it is found that MN05, MN14, and MN23 show low FTs (< 1160°C).
Meng Li   +3 more
wiley   +1 more source

The Influence of Corporate Sustainability Rating Methodology on Disclosure Behavior

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT The rise of environmental, social, and governance (ESG) investing has illuminated long‐standing concerns over the ability for sustainability rating schemes to accurately convey sustainability‐related performance of firms. This study theorizes and empirically examines how a detailed and transparent rating methodology influences what information
Patrick J. Callery
wiley   +1 more source

Comprehensive study of rheological and surface properties of the selected slag system in the context of its internal structure

open access: yesMetalurgija, 2016
Rheological (dynamic viscosity, flow curves) and surface properties (surface tension) of real slag system were experimentally investigated. Measurements of dynamic viscosity were performed with use of the high-temperature viscometer Anton Paar FRS 1 600.
L. Řeháčková   +4 more
doaj  

Evolution of Viscosity and Structure Property during the Two-step Reduction of Vanadium Slags

open access: yesKuangchan zonghe liyong
This is an article in the field of metallurgical engineering. At present, the cumbersome product routing of FeV alloy causes high energy consumption and hazardous leaching liquor waste.
Xiaolei SUN, Lingxi ZHANG, Min CHEN
doaj   +1 more source

An Indicator‐Based Decision Framework for Circular Bioeconomy Transition in the Steel Industry: Integrating Multiphase Learning and Cooperative Game Modelling

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Despite growing attention to the circular bioeconomy (CBE), the steel industry currently lacks a standardised, sectoral measurement framework to facilitate a low‐carbon transition. In this study, a decision‐support framework for evaluating CBE performance in the steel industry is proposed.
Ali Zamani Babgohari   +2 more
wiley   +1 more source

Multi-objective optimization of parameters of slurry shield slag agitating and discharging system

open access: yesAin Shams Engineering Journal
Slurry shield is an indispensable and important excavation equipment in today's cross-river and cross-sea tunnel projects. Among them, mixing and slag discharge system is an important component to ensure the safe and efficient excavation of the shield ...
Yimin Xia   +5 more
doaj   +1 more source

Oxidizability characterization of slag system on the thermodynamic model of superalloy desulfurization

open access: yesHigh Temperature Materials and Processes, 2020
The oxidizability characterization method of slag system has a decisive influence on the accuracy of the desulfurization model. By carrying out the balance experiments of melting system composed of CaF2–CaO–Al2O3–SiO2–TiO2–MgO–FeO slag system and Inconel
Li Wanming   +3 more
doaj   +1 more source

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