ПОРІВНЯЛЬНЕ ДОСЛІДЖЕННЯ ТЕХНОЛОГІЧНИХ ВЛАСТИВОСТЕЙ ТА ОДНОРІДНОСТІ АЛМАЗНИХ ПОРОШКІВ, ОТРИМУВАНИХ ФЛОТАЦІЙНИМ РОЗДІЛЕННЯМ ПОЧАТКОВОГО ЇХ ЗРАЗКА

• Datum: 2024
• Hauptverfasser: Петасюк, Григорій, Ільницька, Галина, Олійник, Нонна, Сизоненко, Ольга, Базалій, Галина, Петасюк, Ольга
• Format: Artikel
• Sprache: Ukrainian
• Veröffentlicht: Институт сверхтвердых материалов им. В. Н. Бакуля Национальной академии наук Украины 2024
• Schlagworte: алмазні порошки; флотація; морфометричні характеристики; технологічні властивості; однорідність
• Online Zugang: http://altis-ism.org.ua/index.php/ALTIS/article/view/316
• Назва журналу: Tooling materials science

A review of publications on the application of flotation separation in the field of synthetic diamond powders was conducted. It has been established that the applied materials science orientation of known publications is focused on the enrichment of the diamond synthesis product and on improving the quality of synthetic diamond powders. The purpose of such research was to isolate fractions with greater static grain strength or abrasiveness from standard synthetic diamond powders. In addition to static strength and abrasiveness, publications also focused on grain roughness. The greater static strength and abrasiveness of the grains of the foam fraction in comparison with the chamber fraction of flotation separation is explained by the lower roughness of the grains of the foam fraction. However, the authors do not provide a quantitative estimate of roughness. The proposed work presents the results of a comparative quantitative study of grain projection roughness and other morphometric characteristics of foam and chamber products of flotation separation of standard micropowder ASM 40/28. The technological properties of these two fractions separated by flotation, their homogeneity according to morphometric characteristics were also analyzed. For the first time, it was established on a quantitative level that powders of the foam fraction have a lower specific perimeter compared to the chamber fraction. It is this morphometric characteristic that is indirectly responsible for the roughness of the grain surface. It was established that the powder of the foam fraction is more homogeneous in terms of morphometric characteristics. It is claimed that the homogeneity of diamond powders can serve as a criterion for evaluating the quality of flotation separation of synthetic diamond powders. In the future, similar studies should be continued in the direction of creating scientific and methodological bases for a priori assessment of the feasibility of repeated or multi-stage flotation separation.