scholarly journals Deep and crustal factors of thorium-uranium mineralization of the Golovanevskaya zone of Ukrainian Shield

2021 ◽  
Vol 43 (5) ◽  
pp. 80-94
Author(s):  
М. А. Yaroshchuk ◽  
А. V. Vaylo ◽  
А. Ye. Ganevich
Keyword(s):  
Deep Level ◽  
Granulite Facies ◽  
Rare Metal ◽  
Uranium Mineralization ◽  
Raw Material ◽  
Material Base ◽  
Uranium Ore ◽  
Regional Features ◽  
Multi Stage ◽  
Deep Fluid

The article discusses the features of the deep and crustal structure of the Golovanevskaya zone, the geochronological sequence of the main stages of its formation. The characteristic of thorium-uranium ore occurrences and deposits is given; and the main stages of their formation. The stages of successive concentrations of uranium and thorium in connection with the processes of sedimentation, volcanism, metamorphism, ultrametamorphism, and tectonic-magmatic activation are determined. The concentration of uranium and thorium was multi-stage and increased with each subsequent geological process. The deep and crustal sources of uranium and thorium, their ratio in the pre-ore main ore-generating stages of deposit formation are considered. It is shown that the formation of deposits became possible in the Proterozoic when neutral and alkaline water-potassium fluids replaced the deep acidic Archean fluids, and the formation of thorium-uranium rock complexes became possible in the crust. The totality of the data obtained is the basis for classifying the thorium-uranium mineralization as the metamorphogenic type. The presence in the Golovanevskaya zone of Lozovatsky, Yuzhny, Kalinovsky deposits, and numerous thorium-uranium ore occurrences determine this zone as promising for developing the thorium-uranium raw material base of the nuclear energy of Ukraine. Thorium-uranium mineralization is also genetically typical for the Kryvyi Rih-Inguletskaya, Orekhovo-Pavlograd interblock suture zones; detailed research is needed to determine their prospects. The confinement of thorium-uranium mineralization specifically to interblock zones is due to a combination of the following main regional features: the presence of Neoarchean thorium-uranium-bearing rock complexes; their metamorphism under conditions of granulite facies; intense ultrametamorphism; development of deep fluid-conducting faults; deep level of the erosional section, in which the products of the rare-metal and pyrite stages of thorium-uranium mineralization were exposed.

scholarly journals Prospects for discovery of industrial concentrations of rare and rare-earth elements in the Alekseevsko-Lysogorskiy uranium-ore area of Ingulskiy megablock of the Ukrainian shield

2019 ◽  
pp. 3-10 ◽  
Author(s):  
G. A. Kalashnyk
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
General Pattern ◽  
Rare Metal ◽  
Uranium Mineralization ◽  
Raw Material ◽  
Ukrainian Shield ◽  
Material Base ◽  
Uranium Ore ◽  
Rare Metal Mineralization

The article presents the results of the assessment of the prospects for discovery of industrial concentrations of rare and rare-earth elements in the Alekseevsko-Lysogorskiy uranium-ore area of Ingulskiy megablock of the Ukrainian Shield. General pattern in the distribution of industrial objects of rare-metal and uranium mineralization in the Ingulskiy megablock of the Ukrainian Shield, caused by similar deep-seated factors of ore formation, are revealed. The complex of regional and criteria of uranium mineralization of a rare-earth-thorium-uranium formation in silicon-potassium metasomatites of the Alekseevsko-Lysogorskiy ore region is substantiated: geological-structural, mineralogical-geochemical, hydrogeological. There were presented characteristic local features of manifestations of rare-metal mineralization in this region. Based on the results of the analysis of geological and geophysical materials, it was possible to identify new uranium and complex uranium rare-metal deposits with higher mineralization parameters in optimal geological and structural conditions in the Alekseevsko-Lysogorskiy uranium ore region. There has been established the possibility of identifying within the limits of known uranium ore fields, manifestations of uranium mineralization of the rank such as deposit, ore occurrence of this uranium ore region of industrial concentrations of rare and rare-earth elements. The possibility of increasing the value of known deposits and ore occurrences of uranium of the Alekseevsko-Lysogorskiy uranium ore region due to the complexity of ore use is substantiated. According to the degree of manifestation of the complex of criteria, prospective ore and potentially ore zones are discovered for possible detection of industrial concentrations of rare metals and rare-earth elements within the Alekseevsko-Lysogorskiy ore region. There were developed recommendations for further research in the Alekseevsko-Lysogorskiy uranium ore region with the aim of improving the quality of the raw material base of rare and rare-earth elements.

scholarly journals Prospects of the Tymoshivsko-Znamianskyi potential rare-metal ore area of Inhulskyi megablock of the Ukrainian Shield

2020 ◽  
pp. 3-12
Author(s):  
G. A. Kalashnyk
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Structural Control ◽  
Great Part ◽  
Rare Metal ◽  
Raw Material ◽  
Ukrainian Shield ◽  
Material Base ◽  
Hydrothermal Mineralization ◽  
Genetic Types

The article presents the results of the assessment of the prospects for discovery of industrial concentrations of rare and rare-earth elements in the Tymoshivsko-Znamianskyi potential rare-metal ore area of Inhulskyi megablock of the Ukrainian Shield. The results of studies of regularities of raremetalmineralization’s placement in Tymoshivsko-Znamianskyi potential ore region of the Inhulskyi megablock of the Ukrainian Shield are presented. The structural control of the great part of the detected geochemical anomalies, geochemical halos, manifestations and ore manifestations by certain systems of rupture faults and their intersection nodes is determined. The typical local features of manifestations of rare metal mineralization in small uranium deposits and large ore manifestations of this region and uranium mineralization of different genetic types, in particular hydrothermal mineralization of vein-stockwork type in mineralized fault zones are presented. According to the degree of manifestation of the complex of criteria, prospective ore and potentially ore nodes are discovered for possible detection of industrial concentrations of rare metals and rare-earth elements within the Tymoshivsko- Znamianskyi potential ore region, as well as uranium ores of various genetic types, in particular superimposed rich hydrothermal mineralization of vein-stockwork type. There were developed recommendations for further research in the Tymoshivsko-Znamianskyi potential ore region with the aim of farther development of rare and rare-earth elements raw material base.

The interasin raw material base of coke-chemical production of Ukraine: Problems of charge formation, its preparation and coking

2018 ◽  
Vol 5 (6) ◽  
pp. 3-7 ◽  
Author(s):  
E.S. Popov ◽  
V.I. Gavrilyuk ◽  
N.V. Mukina ◽  
E.T. Kovalev ◽  
I.D. Drozdnik ◽  
...  
Keyword(s):  
Raw Material ◽  
Material Base ◽  
Chemical Production ◽  
Charge Formation

Research on the Recovery of Copper from Metallurgical Slag

Mining Revue ◽  
2021 ◽  
Vol 27 (3) ◽  
pp. 40-44
Author(s):  
Eugen Traistă ◽  
Camelia Bădulescu ◽  
Maria Lazăr ◽  
Camelia Traistă
Keyword(s):  
Metallurgical Slag ◽  
Industrial Wastes ◽  
Raw Material ◽  
Pollutant Emissions ◽  
Material Base ◽  
Metallurgical Slags ◽  
Slag Processing ◽  
Metallurgical Processes ◽  
Initial Research ◽  
Over Time

Abstract Metallurgical slag is one of the most common industrial wastes. Many of these wastes are not stable over time, by reacting with water and air, continuously generating emissions of heavy metals. Metallurgical slag processing is necessary for at least two reasons: reducing pollutant emissions and broadening the raw material base. The recovery of these slags is very difficult because they are the result of metallurgical processes that aimed to fix metals considered impurities in chemical matrices as stable as possible. This paper presents the initial research on the behavior of metallurgical slags against different leaching technologies.

Adjustment of a technology of cast iron smelting in the blast furnace of jsc "ural steel" w ith a volume of 1232 см3 with charge h a v in g 95% share of Mikhailovskii GOK pellets

2021 ◽  
Vol 77 (7) ◽  
pp. 768-775
Author(s):  
I. F. Iskakov ◽  
G. A. Kunitsyn ◽  
D. V. Lazarev ◽  
А. А. Red`kin ◽  
S. A. Trubitsyn ◽  
...  
Keyword(s):  
Blast Furnace ◽  
Iron Ore ◽  
Raw Materials ◽  
Raw Material ◽  
Material Base ◽  
Hot Metal ◽  
Charging System ◽  
Iron Smelting ◽  
Gas Consumption ◽  
A Charge

To use effectively internal raw material base, JSC “Ural Steel” accomplished I category major overhaul of the blast furnace No. 2. The main purpose of the overhaul was to design a rational profile which could ensure an ability to operate with a charge containing 95 % of Mikhailovskii GOK (mining and concentrating plant) pellets having basicity of 0.5 by CaO/SiO2. The blast furnace No. 2 having useful volume of 1232 m3, was constructed by design of Danieli Corus, the Netherlands, and was blown in on December 30, 2020. In the process of guarantee tests, step-by-step increase of Mikhailovskii GOK pellets (Fetotal = 60.5 %, CaO/SiO2 = 0.5) content in the charge iron ore part was being accomplished from 55 to 95.1%. Charging of the blend containing pellets in the amount of 55% of iron ore part, was done by charging system 4OOCC + 1COOCC (Ore - Coke) with filling level 1.5 m. Under conditions of pellets part increase in the blend, the charging system was changed to decrease their content at the periphery, to increase it in the ore ridge zone and make it intermediate between periphery and the ore ridge. At the pellets share in the iron ore raw materials 0.75 the charging system was used as the following: 3OOCC + 1COOC + 1COOCC, while at the content 95.1% the following charging system was used: 2COOC + 2COOC + 1COOCC. It was noted that in the period of guarantee tests the furnace running was smooth. The average silicon content in the hot metal was 0.70% at the standard deviation 0.666. Sulfur content in the hot metal did not exceed 0.024%, the blowing and natural gas consumption figures were 2100 m3/min and 11000 m3/min correspondently, oxygen content in the blowing 26.5%, hot blowing and top smoke pressure figures were 226.5 and 109.8 KPa correspondently. The productivity of the furnace was reached as high as 2358 t/day at the specific coke rate 433 kg/t of hot metal. After guarantee tests completion, the pellets content in the iron ore part was decreased gradually from 95 down to 50%. The decreasing was made by 5% in every 6 hours of operation. Application of the mastered technology of the blast furnace No. 2 with the increased share of pellets will enable to stably supply the blast furnaces No. 1, 3 and 4 by iron ore raw materials in the proportion of 30-35% of pellets and 65-70% of sinter.

Studying the Effect of some Factors on the Stress-Strain Behavior of the Rostov Region Limestones in the Course of their Production and Use

2021 ◽  
Vol 1022 ◽  
pp. 80-86
Author(s):  
Mikhail G. Kholodnyak ◽  
Sergey A. Stelmakh ◽  
Evgeniy M. Shcherban ◽  
Mukhuma P. Nazhuev
Keyword(s):  
Construction Material ◽  
Experimental Studies ◽  
Raw Material ◽  
Material Base ◽  
Strain Behavior ◽  
Current State ◽  
Rostov Region ◽  
Literary Sources ◽  
Crushed Granite ◽  
Strain Stress

The paper considers the current state of the mineral raw material base and the construction material market of the Rostov Region. The effect of various factors on the strain-stress behavior of local limestones has been investigated. The scientific and technical literary sources devoted to the processes of rock failure under various loads have been analyzed. The experimental studies have shown that the tested samples of limestone with a high content of cuboidal grains have characteristics comparable to those of the crushed granite stone. It has been concluded that the use of the Rostov Region limestones in the construction industry is competitive and feasible, provided the proper implementation of the engineering measures proposed in their production.

ENVIRONMENTAL ISSUES OF SURFICIAL URANIUM DEPOSITS: OUM DHEROUA CASE STUDY (ISLAMIC REPUBLIC MAURITANIA)

2021 ◽  
Author(s):  
Mariia Kurylo ◽  
Ivan Virshylo
Keyword(s):  
Clean Energy ◽  
Raw Material ◽  
Open Pit ◽  
Open Pit Mining ◽  
Material Base ◽  
Uranium Deposits ◽  
Islamic Republic ◽  
Natural Ecosystems ◽  
Lower Estimation

Uranium deposits and resources are considered as an important raw material base for the implementation of scenarios for the green and clean energy transition. Traditionally discussed risks of potential environmental impacts of Uranium projects development could be subdivided by deposit type. Surficial type mineralization connected to the calcretes in shallow paleovalleys or playas has many specific features which might be analysed separately. Case study of Oum Dheroua Uranium project in the Islamic Republic of Mauritania shows an unexpected lower estimation of environmental risks comparatively to conventional Uranium projects despite to open-pit mining technology. The reasons for such estimation, connected to geographic location, the inclusion of Uranium minerals in natural ecosystems and low scale of deposits (both in grade and size sense). Potential by-products (Vanadium and Strontium) are not part of environmental factors assessment.

Serpentinite Magnesium Binders, Based on Technogenic Raw Materials

2021 ◽  
Vol 316 ◽  
pp. 1050-1054
Author(s):  
V.N. Zyryanova ◽  
E.V. Lytkina ◽  
A.P. Ochur-Ool
Keyword(s):  
Mechanical Strength ◽  
Water Resistance ◽  
Raw Materials ◽  
Raw Material ◽  
Material Base ◽  
Hardening Process ◽  
Dispersed System ◽  
Technogenic Raw Materials

Increasing water resistance and mechanical strength of hardening magnesian binders’ products can be achieved by introducing microfillings into a hardening dispersed system. It is shown that serpentine provides an increase strength and water resistance in hydration and hardening process, being as a structure-forming component, it intensifies this process. It allows expanding the raw material base for the production of magnesia binders for construction purposes.

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