Micronization of zeolite in vibration mill

Abstract

Dry micronizing grinding of mineral raw materials is a very complex process and depends on a whole range of parameters such as: shape, particle size, size distribution of the starting and micronized material, hardness, moisture, density, surface properties, structural characteristics of mills, etc. In order to obtain a clear picture of dry micronizing milling process, a good knowledge of the theoretical principles of high-energy mills operation is necessary. Classical mills are not suitable for micronization to a fine and particularly very fine particles size (upper particle size limit below 5 μm), which is necessary for modern industrial application domains. The intensive fundamental and developmental research of the dry micronizing milling process for the new materials development has also enabled the development of new construction solutions for ultra-fine high-energy mills-mechanics. These mills have found application into the state-of-the-art production technologies of new very profitable materials. For the production of powders-particles of micron dimensions, the mechano-actuators are used and all micronizers-disintegrators, colloidal (perl mills), vibratory, planetary, ultra-centrifugal mill, Jet-current mills and others operate on the principle of impact, shock and friction. This paper presents the experimentally achieved results of dry micronizing grinding of zeolites in a vibrating mill with rings, as well as the improvement of its reactivity. All experimental micronization investigations were carried out on a previously prepared coarse particle size class (-3.35 + 0) mm with different starting mass (50 g and 200 g), and carried out in different grinding time intervals (45, 120, 900 seconds), in order to examine the impact of these parameters on the micronization process. Grinding success was evaluated by the particle size measurements and content of class (-5 + 0) μm, and particle specific surface. It was shown that for a sample of four times larger initial mass it is need longer grinding time to achieve the maximum content of the class (-5 + 0) μm, but for a sample of the bulk class (-3.35 + 0) mm with a lower starting mass the effects of amorphization due to prolonged micronizing grinding are very pronounced, and the zeolite minerals in crystalline form are practically in the trace and the largest part is amorphous. Generally, it can be concluded that a vibrating mill with a rings proved to be a good device for efficient ultra-fine micronizing grinding.

Zeolite Clinoptilolite: Therapeutic Virtues of an Ancient Mineral

“…The micronization of zeolite clinoptilolite (M-ZC) is a procedure that breaks down the ZC into small parts accentuating its detoxifying characteristics [44]. This micronization occurs with mills having two counter-rotating parallel blades, which, with a thrust of 2500 km/h and particular aerodynamics, create two counter-rotating airflows [46]. This ZC powder is distributed in the two airflows and begins to self-collide with a frequency of 3–4000 collisions/s [46].…”

“…This micronization occurs with mills having two counter-rotating parallel blades, which, with a thrust of 2500 km/h and particular aerodynamics, create two counter-rotating airflows [46]. This ZC powder is distributed in the two airflows and begins to self-collide with a frequency of 3–4000 collisions/s [46]. Furthermore, tribomechanical micronization is a specific micronization first used to activate ZC one time—TMAZ and was further developed as Panaceo Micro Activation technology with PMA-ZC as a result [6].…”

Exploring the Properties of Micronized Natural Zeolitic Volcanic Tuff as Cosmetic Ingredient

“…The particle size distribution, the specific surface, the particle diameter and shape, the chemical and mineralogical composition, volume mass, surface activity and optical properties are the basic parameters of the micronizing product quality. The quality of micronized product depends on the physical, mechanical, chemical and mineralogical characteristics of the raw material [ 11 ]. Studies showed that the tribomechanical micronization of zeolites can have positive effects on various pathological conditions of organisms [ 8 ].…”