Particle shape characterization of brown corundum powders by SEM and image analysis

2006 ◽  
Author(s):  
Li Zhengmin ◽  
Zhai Han ◽  
Tan Min
Keyword(s):  
Image Analysis ◽  
Particle Shape ◽  
Shape Characterization

Particle shape characterization using image analysis and neural networks

1997 ◽  
Vol 91 (3) ◽  
pp. 217-227 ◽  
Author(s):  
H.S. Hundal ◽  
S. Rohani ◽  
H.C. Wood ◽  
M.N. Pons
Keyword(s):  
Neural Networks ◽  
Image Analysis ◽  
Particle Shape ◽  
Shape Characterization

3D size and shape characterization of natural sand particles using 2D image analysis

2020 ◽  
Vol 279 ◽  
pp. 105915
Author(s):  
Wei-Qiang Xie ◽  
Xiao-Ping Zhang ◽  
Xin-Mei Yang ◽  
Quan-Sheng Liu ◽  
Shao-Hui Tang ◽  
...  
Keyword(s):  
Image Analysis ◽  
Natural Sand ◽  
Size And Shape ◽  
Sand Particles ◽  
Shape Characterization

Particle Shape Characterization of Inorganic Powders by SEM and Image Analysis

2010 ◽  
Vol 177 ◽  
pp. 18-21 ◽  
Author(s):  
Zheng Min Li ◽  
Min Tan ◽  
Bing Jiang ◽  
Zhi Wei Chen ◽  
Wei Jiang Si
Keyword(s):  
Spray Drying ◽  
Particle Shape ◽  
Image Process ◽  
Shape Factors ◽  
Sem Image ◽  
Dry Conditions ◽  
Powder Particles ◽  
Shape Characterization ◽  
Process Method

The shape of inorganic powder particles, prepared by spray-drying process, is close to sphere, and the dry conditions have greater effect on the sphericity. The particle shape is normally described by words or shown by micrographs — these are qualitative and imprecise. In order to characterize the particle shape quantitatively, three shape factors, i.e. aspect ratio (M), roundness (R) and concavity (C), are proposed to describe the particle shape of the inorganic powders in different aspects. An image process method, that “holes” were filled and then particle clusters were separated, was developed and applied in scanning electron microscope (SEM) image in which some particles with “shadow” contact with each other. Mean shape factors, based on about 500 particles in 10 micrographs, are proposed to characterize the particle shape of the inorganic powders. The determination results of four inorganic powders show that cracking catalyst powders without silicon additive and produced after rebuilding of the spray-drying device are closer to spheres.

Sign in / Sign up

Export Citation Format

Share Document