Analysis of separator operating conditions in a technological module with vibration-centrifugal closed-cycle grinding unit for obtaining high-dispersity materials

Abstract

The demand for up-to-date building materials and components for their production is constantly growing. The purchasing of foreign analogues is often unreasonable and costly, and the domestic products not always meet the high requirements specified for them. In light of this, it is necessary to develop up-to-date knowledge-intensive technologies of producing building materials of various purpose, as well as materials and products of ceramic, varnish- and-paint, glass and other industries, the basis of which is the application of high-dispersive powders. The extensive use of fine-ground and ultrafine-ground materials resulted in designing a wide range of grinders of various types (ball, vibration, planetary, centrifugal, jet grinders etc.). In each certain unit the special conditions for grinding are created, which allows using them for processing materials with various physical and mechanical characteristics. In this work the mathematical model of closed grinding cycle with combined-action air separator is suggested. In this model the integral functions of partition in air separator have been obtained. The calculated and experimental values of the integral functions of partition in air separator have been compared.

Ecology and utilization of ore dressing tailings

“…The urgency of obtaining metals from substandard ores in terms of metal content [25,26], including leaching, is increasing [1][2]. In this way, 13 deposits of Russia have already been exploited in the past year.…”

Prospects for waste-free utilization of ore dressing tailings

“…Rising prices for non-ferrous and rare metals stimulate the use of tailings mining and processing of ores [24,25]. So, in Bohemia, useful components have been extracted from old dumps since the 80s of the last century.…”