Results 251 to 260 of about 584,132 (297)

Raman spectroscopy of ball-milled TiO2

Journal of Molecular Structure, 2001
The Raman spectroscopy is method to analyze different crystal structure of TiO2. We applied it in order to study structural changes during high-energy ball milling of TiO2 powder. TiO2 anatase (tetragonal structure, space group I4/amd = D4h19) was milled up to 10 hours using two different sets of vials and balls.
Furić, Krešimir, Stubičar, Mirko, Gajović, Andreja, Ivanda, Mile   +3 more
openaire   +3 more sources

Phases in ball-milled

Journal of Physics: Condensed Matter, 1997
Phases in ball milled for different lengths of time have been investigated by means of x-ray diffraction, Mossbauer spectroscopy and Raman scattering spectroscopy. It was found that the high-temperature phase can be formed by ball milling at room temperature. In the milling procedure the compounds FeSi and were also formed.
Li Tie, Li Yu-zhi, Zhang Yu-heng
openaire   +1 more source

Direct Amidation of Esters by Ball Milling**

Angewandte Chemie International Edition, 2021
Abstract The direct mechanochemical amidation of esters by ball milling is described. The operationally simple procedure requires an ester, an amine, and substoichiometric KOtBu and was used to prepare a large and diverse library of 78 amide structures with modest to excellent efficiency. Heteroaromatic and heterocyclic components are
William I. Nicholson, Fabien Barreteau, Jamie A. Leitch, Riley Payne, Ian Priestley, Edouard Godineau, Claudio Battilocchio, Duncan L. Browne   +7 more
openaire   +2 more sources

Ball wear and ball size distributions in tumbling ball mills

Powder Technology, 1985
Abstract The theory of the calculation of the size distribution of the equilibrium mixture of balls in a ball mill is developed. The differential equation is solved for wear laws of the form wear rate per ball ∝ r2 + Δ where r is ball radius. Δ = 0 gives the Bond wear law and Δ = 1 gives the Davis wear law.
L.G. Austin, R.R. Klimpel
openaire   +1 more source

An investigation of a ball mill.

1921
Porter, J. (Supervisors)
openaire   +1 more source

Ball Mill

2023
Zhang Guowang, Liu Yu, Xu Kuangdi
openaire   +1 more source

Predictive model for ball mill wear

Canadian Metallurgical Quarterly, 1997
Abstract Ball mills, characteristic of the mineral processing industry, are used to reduce ore from one size distribution to another. Wear is associated with comminution mechanisms found in the ball charge which in turn affects grinding performance.
openaire   +1 more source

Mineral Processing and Extractive Metallurgy Review

Mineral Processing and Extractive Metallurgy Review, 2021
Kianoush Barani
exaly  

Stirred Ball Mills

2004
Son yıllarda karıştırmalı bilyalı değirmenlerin çeşitli sanayi kollarındaki kullanımı giderek yaygınlaşmaktadır. Madencilik sektöründe ise ince öğütmeye olan ihtiyacın artmasına ve ekipman boyutlarının büyümesine paralel olarak karıştırmalı bilyalı değirmenler tesislerde kullanılan geleneksel boyut küçültme ekipmanlarına bir alternatif ...
DİKMEN, Serkan, ERGÜN, Ş. Levent
openaire   +1 more source

ball mill

2021
openaire   +1 more source