Modelling of metasomatosis in radiogenic rocks as a factor of transformation of their properties

Baranov, Viktor; Mametova, L.F.; Korovin, Vadym

doi:10.24028/gzh.0203-3100.v42i1.2020.195478

Cited by 4 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Certain radioactivity (in certain areas) is inherent only in separate iron ore deposits and is associated predominantly with their granitization. Uranium (and thorium) mineralization is an exception in such deposits, usually locally, accompanied by superimposed processes of secondary silicification, iron ore oxidation, alkaline and carbonate metasomatosis [9], etc. In the Kryvyi Rih-Kremenchuk metallogenic zone of Ukraine, there are [10]- [12]: 2 uranium deposits (Pervomaiske and Zhovtorichenskewithin the iron ore deposits with the same name), 3 uranium ore occurrences (Hannivsky, Kremenchuk, Krasnohvardiiskyi) and 11 occurrences of uranium mineralization.…”

Section: Review Of Recent Research and Publicationsmentioning

confidence: 99%

Northeastern part of the Bilanivske ferruginousquartzite quarry: Risks of mining allotment

Lashko¹

2021

Min. miner. depos.

View full text Add to dashboard Cite

Purpose.Substantiation of the managerial decisions to minimize the risks of mining the Bilanivske ferruginous quartzite quarry on its northeastern margin. Methods. The legislative, methodological, cartographic and literary materials on the topic, as well as the area of survey have been analyzed. The necessary cartographic plotting and calculations have been performed. An abstract-logical method is used to formulate conclusions and theoretical generalizations. Findings. The ecological risks of the Bilanivske quarry northeastern margin have been substantiated: presence of uranium ore deposits and a radioactive anomaly; geochemical pollution of groundwater; a depression cone, large in area and in depth, can be formed in the region; a probability of using explosives when mining the field; use of the Bilanivske quarry eastern side for laying mine shafts and adits. The question is raised about the expected expansion of the Bilanivske quarry boundaries to the east during its mining, as well as falling into the sanitary protection zone boundaries of the northwestern residential community of the Nova Haleshchyna urban-type settlement. It is recommended, when mining the Bilanivske and Kremenchuk (Haleshchynske) iron ore deposits, to develop for them a unified draft Environmental Impact Assessment (EIA) and a unified draft of sanitary protection zone, taking into account the fact of their mutual influence on the environment. Originality.For the first time, based on a combination of geological, mining, technological and spatial factors, a site (zone) of mutual risks has been identified in the Bilanivske and Kremenchuk (Haleshchynske) iron ore deposits development. The site has an area of 165 ha, bounded by the northeastern side of the Bilanivske quarry and the southern boundary of the planned Haleshchynske mine. Practical implications.The research results can substantiate the need to resettle the residents from the northwestern residential community of the Nova Haleshchyna urban-type settlement, taking into account the Bilanivske field development by the open-pit method. In addition, they also can serve as a basis for resolving disputes between these residents and the administration of Ferrexpo Belanovo Mining LLC (Bilanivske Mining Plant).

show abstract

Section: Review Of Recent Research and Publicationsmentioning

confidence: 99%

Northeastern part of the Bilanivske ferruginousquartzite quarry: Risks of mining allotment

Lashko¹

2021

Min. miner. depos.

View full text Add to dashboard Cite

show abstract

Impact of the fluoride ion and sulfuric acid content in leaching solution on the granite weight decrease

2022

Geoteh. meh.

View full text Add to dashboard Cite

The rate of constrained particles deposition in a wide range of suspension densities in the laminar-turbulent operating modes

2023

Geoteh. meh.

View full text Add to dashboard Cite

The rate of constrained fall of mineral particles in suspensions of different densities is necessary for calculating the design and operating modes of gravity concentrating equipment. During hydraulic classification and separation, a mixed, laminar-turbulent, flow regime is observed in real pulps. There are no theoretical velocity formulas for such a regime, and most of the known semi-experimental and experimental formulas have limited application. This article proposes a new method for comparing different formulas with each other in a wide range of suspension densities. The method uses an analytical calculation of the hydraulic characteristics of the medium - porosity, concentration and viscosity. What is new is that all these characteristics depend on only one indicator - the density of the suspension, which is easily determined in practice by weighing a pulp sample. In these calculations, the weighted average density of heterogeneous particles in suspension is used. A feature of the method is the approximation of the analyzed calculation formulas to the conditions of free fall in order to obtain only one control point and compare it with known experimental data. This method allows to set the limits of the application of formulas depending on the density of the suspension. The choice of a more precise formula is necessary for the design hydraulic devices for the classification and separation of mineral suspensions and finely ground composite raw materials. The application of this method for the most common formulas of Ergan and Todes-Rosenbaum is shown. It was found that the latter formula іs actually not suitable for dilute suspensions with a density below 1.65 g/cm3. A new linear equation for calculating the rate of constrained particles deposition is proposed, which provides high accuracy in a wide range of suspension densities. The resulting equation has a simple form and, together with an analytical calculation of the characteristics of the medium, forms a system of linear equations for calculating the rate of constrained particles deposition of any size and density in mineral pulps of different densities. The calculation of the velocity of constrained settling and the ascent of particles is the basis for the design of hydraulic classifiers and separators for mineral dressing. Such calculations are necessary for determining of hydraulic devices optimal modes and monitoring indicators during their operation.

show abstract

Modelling of metasomatosis in radiogenic rocks as a factor of transformation of their properties

Cited by 4 publications

References 0 publications

Northeastern part of the Bilanivske ferruginousquartzite quarry: Risks of mining allotment

Northeastern part of the Bilanivske ferruginousquartzite quarry: Risks of mining allotment

Impact of the fluoride ion and sulfuric acid content in leaching solution on the granite weight decrease

The rate of constrained particles deposition in a wide range of suspension densities in the laminar-turbulent operating modes

Contact Info

Product

Resources

About