|
|
The influence of grinding on the limestone properties
Pavlík, Tomáš ; Bednárek, Jan (referee) ; Šiler, Pavel (advisor)
This bachelor thesis deals with dry limestone grinding in the vibratory mill and ball mill. Three different limestone samples were used for milling. Samples were ground in the mills without the addition of surfactants. Several methods of grinding were performed in the vibratory mill. At first, the same weight of limestone samples was ground for different grinding time without any interruption except for one case of grinding with breaks for cooling off the grinding tablet. Another method was grinding of different weights of the same sample. The last one used the same weight of different samples. In the ball mill, sample of one type of limestone was ground for various milling time. The particle size, shape of particles, phase composition and crystallite size were studied for the ground samples. Sieve analysis, laser diffraction analysis, scanning electron microscopy, powder X-ray diffraction analysis and X-ray fluorescence analysis were used to determine these properties. For each mill, the amount of energy consumed for limestone grinding was calculated.
|
|
| |
|
|
Milling activators use in the very fine powder material practice.
Borguľová, Eva ; Kejík, Pavel (referee) ; Svěrák, Tomáš (advisor)
This work deals with the study of clinker dry milling using ball mill with the sferical shaped steel grinding elements in it. Grinding aids are surface active substances, wich separate particles of milled substance and prevent their reaglomeration and can active the proces of the grinding.There will be used PEG, TEA and HEAas a surfactans. Characterization of samples will be performed by granulometry.
|
|
| |
|
|
The influence of grinding on the limestone properties
Pavlík, Tomáš ; Bednárek, Jan (referee) ; Šiler, Pavel (advisor)
This bachelor thesis deals with dry limestone grinding in the vibratory mill and ball mill. Three different limestone samples were used for milling. Samples were ground in the mills without the addition of surfactants. Several methods of grinding were performed in the vibratory mill. At first, the same weight of limestone samples was ground for different grinding time without any interruption except for one case of grinding with breaks for cooling off the grinding tablet. Another method was grinding of different weights of the same sample. The last one used the same weight of different samples. In the ball mill, sample of one type of limestone was ground for various milling time. The particle size, shape of particles, phase composition and crystallite size were studied for the ground samples. Sieve analysis, laser diffraction analysis, scanning electron microscopy, powder X-ray diffraction analysis and X-ray fluorescence analysis were used to determine these properties. For each mill, the amount of energy consumed for limestone grinding was calculated.
|
|
|
Milling activators use in the very fine powder material practice.
Borguľová, Eva ; Kejík, Pavel (referee) ; Svěrák, Tomáš (advisor)
This work deals with the study of clinker dry milling using ball mill with the sferical shaped steel grinding elements in it. Grinding aids are surface active substances, wich separate particles of milled substance and prevent their reaglomeration and can active the proces of the grinding.There will be used PEG, TEA and HEAas a surfactans. Characterization of samples will be performed by granulometry.
|
|
| |
|
| |
guest ::
