DEVELOPMENT OF THE METHOD OF IMPROVING PHYSICО-MECHANICAL, PHYSICO-CHEMICAL CHARACTERISTICS OF DIAMOND SYNTHETIC GRINDING POWDERS THROUGH THEIR FLOTATION SEPARATION

Abstract

According to the results of the study of the influence of physical and chemical methods on the flotation separation of synthetic diamond powders with the aim of developing a method of improving the characteristics of diamond synthetic grinding powders of increased strength uniformity by means of their flotation separation, a technological instruction for the manufacture of diamond synthetic grinding powders was developed (TI 25000.00861 "Production of diamond synthetic grinding powders of increased strength uniformity using powder preparation for flotation in an ultrasonic field"). During TI, the material successively goes through the following stages: preliminary chemical treatment, preparation for flotation separation by activating the suspension with iron ions in an ultrasonic field, and subsequent two-stage flotation separation in an impeller flotation machine into foam and chamber products, sieve classification. It was established that the application of the developed method of improving the characteristics of diamond synthetic grinding powders of increased strength uniformity by means of their flotation separation makes it possible (compared to the original powder) to obtain synthetic diamond grinding powders with significantly improved characteristics: from a foam product with a strength uniformity index increased by 76.5% and strength index under static compression by 8.6%. The conducted study of the characteristics of samples of grinding powders AS20 100/80 of the experimental batch (manufactured according to TI 25000.00861) obtained from foam and chamber fractions showed the possibility of obtaining grinding powders of the same brand with better characteristics.