Research of amber extraction technology by vibroclassifier

Abstract

The article presents basic information about the method of hydromechanical extraction of amber from amber-containing rocks, water-sludge scheme and classification scheme. The constructive scheme of the vibroclassifier is also presented, which is based on the principle of using the influence – vibration and bubbling of the suspension by air bubbles. Studies of the separation process and distribution of fractions in multidisperse liquid on a vibroclassifier of complex action were performed. The obtained theoretical and graphical dependences allowed to establish changes in the parameters of the velocity of sand and amber particles in the bath of the vibroclassifier on the size of fractions and density of the suspension, focusing on the size of amber up to 5mm. At the same time, the problem of determining the dependence of the transition coefficient from the rate of free to the rate of compressed deposition on the density of the suspension and the size of the fractions was solved. Dependencies have been established that have a theoretical justification for the physical process and that describe the experimental data on the Rayleigh curve.

Modelling mineral reserve assessment using discrete kriging methods

“…Kriging is a search for the best estimation of a mineral content within the calculated block taking into consideration its percentage in samples taken both inside the block and out of it. The approach should be considered as the most feasible for amber deposits with the use of sequence in exploration, design, commercial testing, and development [61]- [63].…”

Study of hydroerosion process parameters of zeolite-smectite tuffs and underlying rock

“…According to the forecasts of geologists of the Rivne expedition, the tuff resources of the Rivne region amount to hundreds millions of tons and lie along the western flank of the Poliska saddle and the western slope of the Ukrainian crystalline shield in the form of a strip 1...10 km wide at depths 5...200 m. On the territory of the Rivne region, in particular, the Rafaliv basalt deposit (figure 1), tuffs lie at a depth 4...60 m and are stretched in the form of a strip from north to south. The mineralogical and petrographic characteristics of these tuffs, their mineral composition (table 1), structural features have been studied in sufficient detail [12][13][14], which allows them to be used purposefully and effectively.…”

Geometrization of Kryvbas iron ore deposits

“…Planning mining production processes and performance of a mining enterprise is an important task even at the stage of deposit opening [15][16][17][18][19]. It can be ensured by application of mining and geometrical methods.…”