I. I. Vashlaev's research while affiliated with Institute for Problems of Chemical & Energetic Technologies of the Siberian Branch of the Russian and other places
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Publications (14)
Mineral resources in the subsoil are classified as exhaustible. One of the ways to potentially replenish the sources of mineral resources is presented in the materials of these studies. In this article, we studied the natural formation in the bowels of the array of zones of high concentrations of compounds of useful components. We aimed to develop...
The moisture-retaining properties of rocks in the rock mass are considered at ascending capillary leaching. The dependences of the moisture capacity of disperse material of flotation tailings at ascending motion of solutions are found. The dependence of specific moisture capacity and specific moisture-yielding ability of finely dispersed material a...
The process of fluid mass transfer and formation of concentration zones on evaporation barrier in rock mass are studied. A series of experiments is carried out on a special testing plant in order to examine the process of settling-down on evaporation barrier and to determine parameters of vertical zonality in settling-down of simple and complex wat...
Under analysis is on-site extractability of nonferrous and noble metals from tailings by leaching with natural reagents (humus acids, water, lignin). Redistribution of nonferrous and noble metals in a percolation bed made of old tailings in the Norilsk copper–nickel ore field is studied. Kinetics of dissolving of nonferrous and noble metals under c...
Upward capillary leaching is a method of extracting useful components from solutions by filtering them through a column. This method is based on the natural movement of solutions in the column aeration zone. The vadose zone is a geochemical evaporation barrier.
The solution moves upward from the water table to the surface via capillaries in the vad...
Experimental evaluation is given for mineral preconcentration in a bed of a sorption collector in percolation of low concentration useful components from aqueous solutions of salts. Sorption collectors represented by interlayers of lignite, peat, marble and vermiculite are included in an evaporation barrier installed in subsurface zone of rock mass...
Series of experiments on seepage of water solutions of nickel and cobalt through an evaporation barrier in a porous loose rock mass is described. Evaporation intensity shows tendency toward linear decrease with time due to change of the rock mass porosity as a consequence of salt precipitation in the subsurface aeration zone. It is possible to cont...
Based on the analyzed redistribution of nonferrous and precious metals in aqueous and weak acid solutions passed through copper-nickel ore dressing refuses, the authors have obtained distribution of the metals in the mineral phases at different levels of the filtering layer in the tailings and in different contact solutions. Potential extractabilit...
However, it is possible to arrange controllable impact on the geo-fluidic and physical-chemical pro- cesses in the array with the aim of their activation and capability to develop innovative technologies for extraction of valuable components. This could be achieved on the basis of fundamental investigations into the laws of geo-fluidic processes an...
Citations
... Here the soils become Accumulation of metals and salts have been observed and modelled in other settings with similar shallow groundwaters and higher evaporative loss via capillary rise (e.g., Carlisle,1983;Nicker and McCarthy, 2003;Wessolek et al., 2011;Mikhailov et al., 2020). ...
... However, only a few reports the capillary penetration. Yin 31 studied the influence of particles and accumulation pores on lateral capillary permeation, and Mikhailov 32 reported on the capillary rise during column leaching. These studies focussed on the height evolution of the wetting line on the column surface and capillary water absorption. ...
