Results 81 to 90 of about 327,885 (305)

Effect of ball and feed particle size distribution on the milling efficiency of a ball mill: An attainable region approach

South African Journal of Chemical Engineering, 2018
In this article, alternative forms of optimizing the milling efficiency of a laboratory scale ball mill by varying the grinding media size distribution and the feed material particle size distribution were investigated.
N. Hlabangana, G. Danha, E. Muzenda
doaj   +1 more source

Disintegration of microcrystalline Zn2SiO4:Mn phosphor powder [PDF]

, 2013
Zn2SiO4:Mn (willemite) nanoparticles ∼30 nm in size have been prepared by disintegrating microcrystalline willemite powder in a planetary ball mill. X-ray diffraction and scanning electron micros-copy characterization showed that ball milling of the ...
Kortov, V. S., Petrovykh, K. A., Rempel, A. A., Valeeva, A. A., Zvonarev, S. V.   +4 more
core   +1 more source

High Energy Density Asymmetric Aqueous Supercapacitor Based on a 2D Manganese Carbide as a Positive Electrode

Advanced Functional Materials, EarlyView.
A circular route, involving upcycling of waste surgical masks, affords a Mn‐based layered carbide with porosity, redox activity and low work function. These features enable its effective operation as positive supercapacitor electrode in an aqueous asymmetric supercapacitor delivering 213 Wh L−1 energy density.
Debabrata Nandi, Smita Talande, Aby Cheruvathoor Poulose, Gabor Ersek, Giuseppe Portale, Michal Otyepka, Radek Zbořil, Aristides Bakandritsos   +7 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

Estimation of the wear rate associated with ball mill of Mahd Ad Dahab Gold Mine, Saudi Arabia (KSA) [PDF]

, 2018
Purpose. This study aims to estimate the wear of the middle chrome grinding balls in both dry and wet grinding media. The selected ball mill for this study is located at Mahd Ad Dahab Gold Mine, Saudi Arabia. Methods.
Abdelhaffez, G
core   +1 more source

Frontier Advances of Emerging High‐Entropy Anodes in Alkali Metal‐Ion Batteries

Advanced Functional Materials, EarlyView.
Recent advances in microscopic morphology control of high‐entropy anode materials for alkali metal‐ion batteries. Abstract With the growing demand for sustainable energy, portable energy storage systems have become increasingly critical. Among them, the development of rechargeable batteries is primarily driven by breakthroughs in electrode materials ...
Liang Du, Kaidi Zhang, Liang Wang, Di Zhao, Mengqing Hu, Mingli Li, Ming Zhou, Zhenzhen Wu, Mengyang Dong, Bo Fu, Porun Liu, Yun Wang, Hongxia Wang, Yuantong Gu, Lei Zhang   +14 more
wiley   +1 more source

Characterisation of thrust performance of micro-nozzle machined by micro end-milling [PDF]

, 2016
Micro thruster is the power plant of mini-spacecraft. It enables the mini-spacecraft to realize orbit adjustment, station keeping and attitude controlling. Micro nozzle is one of key parts of the micro thruster. The surface roughness of its inner surface
Cai, Yukui, Liu, zhanqiang, Luo, Xichun, Wan, Yi   +3 more
core  

Dual‐Site Ru Single‐Atoms and RuP Nanoclusters on N, P, and B Co‐Doped Porous Carbon for Efficient Alkaline HER and AEM Water Electrolysis

Advanced Functional Materials, EarlyView.
Ru single atoms and RuP nanoclusters are co‐anchored in N, P, and B co‐doped porous carbon nanospheres via in situ carbonization/phosphidation of a boronate polymer precursor. RuP activates water, while nearby Ru single atoms accelerate H2 formation through H* transfer. The catalyst delivers low overpotential and high durability in alkaline HER and AEM
Xiaohong Wang, Juguo Dai, Dongxu Li, Jianghua Wu, Hucheng Fu, Yiting Xu, Xueqiang Qi, Qian Xue, Yanbin Shen, Xiaoqing Pan, Conghui Yuan, Shuifen Xie, Andreu Cabot, Lizong Dai   +13 more
wiley   +1 more source

Effect of Grinding Conditions on Clinker Grinding Efficiency: Ball Size, Mill Rotation Speed, and Feed Rate

Buildings
The production of cement, an essential material in civil engineering, requires a substantial energy input, with a significant portion of this energy consumed during the grinding stage.
Yahya Kaya, Veysel Kobya, Ali Mardani, Naz Mardani, Hatice Elif Beytekin   +4 more
doaj   +1 more source

Particle size reduction of Si3N4 with Si3N4 milling hardware [PDF]

The grinding of Si3N4 powder using reaction bonded Si3N4 attrition, vibratory, and ball mills with Si3N4 media was examined. The rate of particle size reduction and the change in the chemical composition of the powder were determined in order to compare ...
Freedman, M. R., Herbell, T. P., Kiser, J. D.   +2 more
core   +1 more source