Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Effect of particle shape and roughness of talc mineral ground by different mills on the wettability and floatability
Date
2004-02-16
Author
Yekeler, M
Ulusoy, U
Hicyilmaz, C
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
178
views
0
downloads
Cite This
In this study, shape characteristics of talc particles produced by ball, rod and autogenous mills were investigated using Scanning Electron Microscope (SEM) and expressed by the shape descriptors such as elongation, flatness, roundness and relative width by measuring on the particle projections in two dimensions (2D). Approximately, 139 particles were measured for image analysis from each mill product. Surface roughness values of talc mineral have been expressed by the parameters of R-a value on the pelleted surfaces of the particles by employing Surtronic 3(+) instrument. The wettability characteristics (gamma(c)) of talc mineral, produced by three different mills, were also determined by microflotation and the contact angle measurement techniques using the EMDEE MicroFLOT cell and Rame-Hart goniometer, respectively. Some correlations were established between the shape properties, surface roughness values and the wettability characteristics. The results have shown that elongation and smoothness helped to increase the hydrophobicity, while roundness and roughness caused a decrease in hydrophobicity or floatability for the talc mineral studied.
Subject Keywords
Floatability
,
Wettability
,
Surface roughness
,
Shape characteristics
,
Grinding
,
Talc
URI
https://hdl.handle.net/11511/66601
Journal
POWDER TECHNOLOGY
DOI
https://doi.org/10.1016/j.powtec.2003.12.012
Collections
Department of Mining Engineering, Article
Suggestions
OpenMETU
Core
Effects of the shape properties of talc and quartz particles on the wettability based separation processes
Hicyilmaz, C; Ulusoy, U; Yekeler, M (2004-06-30)
Shape properties of talc and quartz particles ground by a laboratory size ball, rod, and autogenous mills were studied using scanning electron microscope (SEM). More than 100 particles were measured to do the shape analysis of each mill product. The wettability behavior of (gamma(c)) a highly hydrophobic of talc mineral was determined by contact angle measurements and microflotation tests using a contact angle goniometer and EMDEE MicroFLOT test tube, respectively. On the other hand, wettability (gamma(c)) ...
Role of shape properties of calcite and barite particles on apparent hydrophobicity
Ulusoy, U; Hicyilmaz, C; Yekeler, M (2004-08-01)
Shape properties of calcite and barite particles ground by ball, rod and autogenous mills were examined by using scanning electron microscope (SEM). Shape properties have been stated in terms of shape descriptors such as elongation ratio, flatness, roundness and relative width by measuring about 200 particles. The results were correlated with the critical surface tension (gamma(c)) of wetting determined by contact angle and micro-flotation methods. The correlations set between the shape properties and the w...
Effect of boundary conditions and workpiece geometry on residual stresses and microstructure in quenching process
Gür, Cemil Hakan; Schuler, W (1996-11-01)
In this study, the internal and residual stress states in quenched C60 steel cylinders are analyzed both numerically and experimentally in order to investigate the effects of boundary conditions (such as quench severity and temperature of quench bath) and specimen geometry Specimen geometry has been analyzed by introducing a hole in a cylinder arid varying hole diameter and its' eccentricity. In the numerical analysis, the finite element method is applied and both temperature gradients and Phase transformat...
Effect of particle shape on fall velocity of angular particles
Göğüş, Mustafa; Kokpinar, MA (2001-10-01)
In this study, fall velocities of 174 regularly shaped angular particles-namely cylindrical, cubic, wedge-shaped prisms, and box-shaped prisms-made of five different materials were measured in calm water conditions in a cylindrical settling column. Reynolds numbers based on particle fall velocity and characteristic length were varied, in the range from 10(3) to 4.2 x 10(4). A new shape factor and characteristic length were defined from a transformed form of the original particle. Variation of experimentally...
Effects of Nanoparticle Geometry and Temperature on the Structural Evolution in FeCo Nanoalloys
Yalçın, Mehtap; Mehrabov, Amdulla; Akdeniz, Mahmut Vedat (Institute of Physics, Polish Academy of Sciences, 2014-02-01)
Effects of nanoparticle size (2.0-6.0 rim) and shape (spherical and cubic) on structural characteristic of atomic ordering processes and order-disorder transformation in B2-type ordered equiatomic-FeCo nanoalloys have been studied by combining electronic theory of alloys in the pseudopotential approximation with Ising-type Hamiltonian site exchange Monte Carlo simulation method. Structural evolutions in amorphous nanopaxticles (2-6 nm) of Fe50Co50 alloy have been utilized via molecular dynamic simulations f...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
M. Yekeler, U. Ulusoy, and C. Hicyilmaz, “Effect of particle shape and roughness of talc mineral ground by different mills on the wettability and floatability,”
POWDER TECHNOLOGY
, pp. 68–78, 2004, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66601.