STUDY OF MECHANOACTIVATION EFFECTIVENESS OF GRANITE SCREENING IN MILLS OF VARIOUS TYPES WHEN SYNTHESIS OF NANOSTRUCTURED BINDER

Abstract

In this paper, the possibility of obtaining nanostructured binders (NB) based on acidic igneous intrusive rocks is considered by the example of screening out granite using milling units of different types, followed by an assessment of the degree of effectiveness of their application for this type of aluminosilicate raw material. A comparative analysis of the degree of mechanoactiva-tion impact of them is carried out. A comparative analysis of the microstructure of samples of granite screening, crushed in three different milling units has been realized. It has been found that the type of milling unit significantly affects not only the degree of dispersion and the nature of the particle size distribution of particles, but also on morphological features of them. It was revealed that the most effective milling unit for obtaining (synthesizing) a binder system from granite screening is a ball mill, as the content of nano- and micro-level particles in this system are maximum, which ultimately determines its quality as a binder. The analysis of the structural, morphological, and strength characteristics of NB obtained from the granite screening in a ball mill, which is following similar data on a quartz NB and allow us to speak about the effectiveness of the use of a ball mill is a grinding machine and granite screening as a raw component for the synthesis of NB.