Studying the interaction process of a solid particles flow with the hydraulic classifier flowing part

Abstract

The paper provides a theoretical description of the solid particles movement process along with the horizontal flow of slurry within the hydraulic classifier flow part. Three modes of movement of solid particles are described: deceleration relative to the slurry flow at a constant speed or its increase, acceleration relative to the slurry flow at a decrease in its speed, with the speed of the slurry flow. The complex equation of solid particles motion in a horizontal co-flow of liquid. A graphic description of the process is given. A laboratory installation was developed to study the interaction of the hydraulic classifier flow part with the slurry flow. Experimental studies were carried out and quantitative process parameters were determined during the movement of rolled quartz solid particles in the size range < 1.8 mm and < 0.2 mm. For the first time in crisis economic conditions, in order to confirm the reliability of previously obtained analytical dependencies to determine the rational parameters of hydraulic disintegrators and determine the operational characteristics of equipment, full-scale experimental studies of the JPD 300-120 suction dredger equipped with an innovative ejector soil suction head with a jet disintegrator system were carried out.

Substantiation the safety open pit wall parameters in the conditions of a reduced protective zone near State critical infrastructure

“…-overburden rocks, which are represented only by soil and vegetation layer rocks, will be mined using the mining transport system with the use of cyclic equipment (bulldozer, hydraulic excavator, loader, motor vehicles) [54]. At the initial stage of the open pit operation, the topsoil will be stored separately in a temporary warehouse located near or within the licensed area of the deposit [55].…”