Results 61 to 70 of about 885,311 (296)

Study on heat transfer behavior and thermal breakage characteristic of the charge in ball mills

Advances in Mechanical Engineering, 2021
Ball mill is the widely used comminution device for the size reduction of iron ore particles, yet the underlying mechanisms of heat transfer and thermal breakage inside the mills heretofore are not deeply understood.
Tongqing Li, Zixin Yin, Guiyi Wu
doaj   +1 more source

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

Advanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu, Hsi‐wen Wu, Xiao Wang, Jie Zhang   +3 more
wiley   +1 more source

Realisation of energy saving potential at mining enterprises on the basis of optimal intramill filling [PDF]

E3S Web of Conferences
The authors present the development of an automated system for controlling the loading of the output mill of pebbles and scrap of the beneficiation plant of JSC Lebedinsky GOK on the basis of measurement of bearing vibration signals.
Starykh Svetlana, Minakova Irina, Derkach Natalia, Taranenko Maksim, Ermolaev Denis   +4 more
doaj   +1 more source

Tuning Amorphous‐Crystalline Catalytic Interfaces by Mechanochemistry: Cu‐Based Metallic Glasses Coupled with Ceria for CO Oxidation

Advanced Materials, EarlyView.
Ball‐milling Cu‐based metallic glasses with ceria creates a unique nanostructure where metallic glass particles are wrapped by CeO2 nanoparticles. The intimate integration triggers copper state reorganization during reaction and aging, boosting CO oxidation and COPrOx activity.
Maahin Mirzay‐Shahim, Mehran Nabahat, Laia Pascua‐Solé, Isabel Serrano, Ilaria Lucentini, Xènia Garcia, Marina Armengol‐Profitós, Asier Agrelo‐Lestón, Ignasi Burgués‐Ceballos, Núria J. Divins, Ignacio J. Villar‐Garcia, Virginia Pérez‐Dieste, Carlos Escudero, Carlo Marini, Jordi Llorca, Eloi Pineda, Pere Bruna, Lluís Soler   +17 more
wiley   +1 more source

Determination of the granulometric composition parameters of the grinding product in a ball mill

MATEC Web of Conferences, 2018
The article deals with the issue of the formation of the grain composition of the comminuted material inside the drum of a ball mill. The approach to the calculation of the grain composition at its transition from a larger fraction from a smaller ...
Sharapov Rashid
doaj   +1 more source

Experimental Study on the Grinding Rate Constant of a Ball Mill: Effects of Feed Size and Ball Diameter [Translated]†

KONA Powder and Particle Journal, 2014
The grinding rate constant is one of the important factors needed to measure or evaluate a grinding process. It has been found that the decreasing rate of the feed size is described by a first-order equation in the ...
Yoshiteru Kanda, Kiichi Simodaira, Naoya Kotake, Yasushi Abe   +3 more
doaj   +1 more source

POM‐Based Water Splitting Catalyst Under Acid Conditions Driven by Its Assembly on Carbon Nanotubes

Advanced Materials, EarlyView.
A newly‐engineered POM‐based electrocatalyst incorporating non‐innocent counter cations exhibits fast kinetics for either the OER or HER under strongly acidic conditions (1 m H2SO4), depending on whether it is assembled on carbon nanotubes (1@CNT) or physically mixed with them (1/CNT). In water‐splitting tests using a two‐electrode setup, these systems
Eugenia P. Quirós‐Díez, Melanie Guillén‐Soler, Carlos Herreros‐Lucas, Alejandro López‐Moreno, José Manuel Vila‐Fungueiriño, Antonio Luis Llamas‐Saiz, Karol Strutyński, Manuel Melle‐Franco, María del Carmen Giménez‐López   +8 more
wiley   +1 more source

Mechanochemical polymerization – controlling a polycondensation reaction between a diamine and a dialdehyde in a ball mill

, 2016
The mechanochemical polycondensation between a diamine and a dialdehyde constitutes a sustainable alternative to classical solvent-based polymerization reactions.
S. Grätz, L. Borchardt
semanticscholar   +1 more source

Pulsed Laser‐Assisted Phase Engineering of Multimetallic Colloidal Nanocrystals With Complex Compositions

Advanced Materials, EarlyView.
The engineering of colloidal nanocrystals with complex compositions has emerged as a highly active area of research within nanomaterials science. This review covers key aspects of colloidal solid‐solution nanocrystal formation using pulsed laser irradiation.
Marina T. Candela, Sergio Triviño‐Sánchez, Andrés Guerrero‐Martínez, Luis M. Liz‐Marzán, Guillermo González‐Rubio   +4 more
wiley   +1 more source

Numerical Analysis of Movement of Balls in a Vibration Mill in Relation with Its Grinding Rate [Translated]†

KONA Powder and Particle Journal, 2014
Effects of grinding conditions and fractional ball filling on the behavior of balls and their collision characteristics in a vibration mill were investigated by image analysis with a video recorder as well as by a ...
Toyokazu Yokoyama, Kishio Tamura, Hiroshi Usui, Genji Jimbo   +3 more
doaj   +1 more source