Restructuring the Uranium Mining Industry in Romania: Actual Situation and Prospects

2002 ◽  
Author(s):  
P. D. Georgescu ◽  
S. T. Petrescu ◽  
T. F. Iuhas
Keyword(s):  
Nuclear Power ◽  
Mining Industry ◽  
Uranium Mining ◽  
Natural Uranium ◽  
Ore Deposits ◽  
Production Costs ◽  
Processing Plant ◽  
Actual Situation ◽  
National Program ◽  
Eastern Carpathians

Uranium prospecting in Romania has started some 50 years ago, when a bilateral agreement between Romania and the former Soviet Union had been concluded and a joint Romanian-Soviet enterprise was created. The production started in 1952 by the opening of some deposits from western Transylvania (Bihor and Ciudanovita). From 1962 the production has continued only with Romanian participation on the ore deposit Avram Iancu and from 1985 on the deposits from Eastern Carpathians (Crucea and Botusana). Starting with 1978 the extracted ores have been completely processed in the Uranium Ore Processing Plant from Feldioara, Brasov. Complying with the initial stipulations of the Nuclear National Program launched at the beginning of the 1980s, the construction of a nuclear power station in Cernavoda has started in Romania, using natural uranium and heavy water (CANDU type), having five units of 650 MW installed capacity. After 1989 this initial Nuclear National Program was revised and the construction of the first unit (number 1) was finalized and put in operation in 1996. In 2001 the works at the unit number 2 were resumed, having the year 2005 as the scheduled activating date. The future of the other 3 units, being in different construction phases, hasn’t been clearly decided. Taking into consideration the exhaustion degree of some ore deposits and from the prospect of exploiting other ore deposits, the uranium industry will be subject of an ample restructuring process. This process includes workings of modernization of the mines in operation and of the processing plant, increasing the profitableness, lowering of the production costs by closing out and ecological rehabilitation of some areas affected by mining works and even new openings of some uraniferous exploitations. This paper presents the actual situation and the prospects of uranium mining industry on the base of some new technical and economical strategic concepts in accordance with the actual Romanian Program for Nuclear Energetics.

Sustainable Development of Uranium Industry from the Ideas of Ecological Security

2012 ◽  
Vol 524-527 ◽  
pp. 2935-2939
Author(s):  
Kai Xuan Tan ◽  
Yong Xiang Huang ◽  
Wei Guang Wang ◽  
Gui Long Cai
Keyword(s):  
Sustainable Development ◽  
Nuclear Power ◽  
Radiation Effects ◽  
Mining Industry ◽  
Uranium Mining ◽  
Nuclear Industry ◽  
Ecological Environment ◽  
Ecological Security ◽  
The Sustainable Development ◽  
Uranium Industry

Ecological security is an important issue for sustainable development of mining industry. Uranium mining industry is the base for development of nuclear industry and nuclear power. But uranium mining and processing has larger effect on ecological environment which mainly include tailings, waste rock, waste water, and radiation effects. This paper probes into the role that ecological safety plays in the sustainable development of uranium mining based on analysis of restricting factors on uranium mining in China from the perspective of ecological security. The uranium mining industry in China to achieve sustainable development, we must establish ecological security ideas.

scholarly journals Assessment of Natural Uranium in the Ground Water around Jaduguda Uranium Mining Complex, India

2011 ◽  
Vol 02 (07) ◽  
pp. 1002-1007 ◽  
Author(s):  
N. K. Sethy ◽  
R. M. Tripathi ◽  
V. N. Jha ◽  
S. K. Sahoo ◽  
A. K. Shukla ◽  
...  
Keyword(s):  
Ground Water ◽  
Uranium Mining ◽  
Natural Uranium ◽  
Mining Complex

Basics of Metals Theory of Extraction by Means of Chemical Water Solutions Filtration through Underground Ores

2014 ◽  
Vol 1020 ◽  
pp. 472-477 ◽  
Author(s):  
Vruyr Sargsyan ◽  
Emil Saratikyan
Keyword(s):  
Molecular Diffusion ◽  
Water Saturation ◽  
Water Injection ◽  
Mining Industry ◽  
Extraction Methods ◽  
Ore Deposits ◽  
Metal Salts ◽  
Chemical Reagents ◽  
Ore Body ◽  
Waste Dumps

Abstract. Geo-technological extraction methods recently are widely used in the mining industry. Removing the metals from underground ore deposits is carried out by injecting chemicals (solvents, oxidants, reducing agents) into wells drilled in them, and the subsequent extraction of metals from saturated solutions. Particularly, this method utilized for the extraction of uranium from flooded sediments and copper from poor (substandard) ores, as well as some non-ferrous and rare metals from waste dumps and tailings of substandard ore mines and processing enterprises. The paper discusses methods developed for prediction of moisture content (water saturation) in rocks under filtration of liquid with incomplete saturation of pores while changing the concentration of the metal in the liquid phase (in an ore body), as well as problems of dissolution and desorption of metal salts on the surface cracks or pores on ore body based on molecular diffusion equation of metal salts. The present work conducted for developing the methods for calculating the liquid filtration through underground deposits of minerals and forecasting of dissolving and washing out metals. It is shown that the processes which take place with the use of chemical reagents are different comparing to the similar processes with water injection. These data allow to predict the changes in the concentration of salts and metals in the liquid and solid phases depending on time.

scholarly journals Digital ecosystem of the region and the competitiveness of Kuzbass coal enterprises

2019 ◽  
Vol 134 ◽  
pp. 03010
Author(s):  
Lyudmila Samorodova ◽  
Larisa Shut’ko ◽  
Yulia Yakunina ◽  
Oleg Lyubimov ◽  
Péter Kovacs
Keyword(s):  
Coal Mining ◽  
Mining Industry ◽  
Market Potential ◽  
Production Costs ◽  
Manufacturing Operations ◽  
Digital Ecosystem ◽  
Mining Region ◽  
Cost Of Time ◽  
Use Of The Internet ◽  
Active Processes

The issues related to the formation of the digital ecosystem in the coal-mining region within the framework of the world project “industry 4.0” are investigated. It is proved that the prospects for the development of the coal-mining region are associated with its export orientation and diversification of the economy, its complication. Technological momentum based on the use of digitization and cyber-physical systems will lead to a significant reduction in the cost of time for the implementation of manufacturing operations, which enhances the market potential of manufactured production, its competitiveness by reducing production costs, the energy costs of its manufacture and, accordingly, offered prices. The most active processes are the formation of the digital ecosystem and the use of the “Internet of Things” in the mining industry, which indicates a new stage of restructuring in this industry. Russia has accumulated “positive” experience related to the implementation of projects “smart mine” and “intellectual open-cast mine” in Kuzbass mines and coal cuts. The increasing complexity of the regional ecosystem through digitalization and automation of production will contribute to the growth of competitive advantages and competitiveness of Kuzbass coal-mining enterprises.

An Overview of US EPA’s Current Radioactive Waste Management and General Radiation Protection Efforts

2009 ◽  
Author(s):  
R. Thomas Peake ◽  
Daniel Schultheisz ◽  
Loren W. Setlow ◽  
Brian Littleton ◽  
Reid Rosnick ◽  
...  
Keyword(s):  
United States ◽  
Radioactive Waste ◽  
Radiation Protection ◽  
Nuclear Power ◽  
Fuel Cycle ◽  
The United States ◽  
Uranium Mining ◽  
Radioactive Waste Disposal ◽  
Environmental Standards

The United States Environmental Protection Agency’s (EPA) Radiation Protection Division is the portion of EPA (or the Agency) that develops environmental standards for radioactive waste disposal in the United States. One current issue of concern is the disposal of low activity radioactive waste (LAW), including wastes that would be produced by a radiological dispersal device (RDD), for which current disposal options may be either inconsistent with the hazard presented by the material or logistically problematic. Another major issue is related to the resurgence in uranium mining. Over the past several years, demand for uranium for nuclear power plant fuel has increased as has the price. The increase in price has made uranium mining potentially profitable in the US. EPA is reviewing its relevant regulations, developed primarily in the 1980s, for potential revisions. For example, in-situ leaching (also known as in-situ recovery) is now the technology of choice where applicable, yet our current environmental standards are focused on conventional uranium milling. EPA has two actions in process, one related to the Clean Air Act, the other related to revising the environmental standards that implement the Uranium Mill Tailings Radiation Control Act of 1978 (UMTRCA). Separately, but related, EPA has developed over the last several years uranium mining documents that address technologically enhanced natural occurring radioactive materials (TENORM) from abandoned uranium mines, and wastes generated by active uranium extraction facilities. Lastly, in 1977 EPA developed environmental standards that address nuclear energy, fuel fabrication, reprocessing, and other aspects of the uranium fuel cycle. In light of the increased interest in nuclear power and the potential implementation of advanced fuel cycle technologies, the Agency is now reviewing the standards to determine their continued applicability for the twenty-first century.

Mapping Magmatic and Hydrothermal Processes from Routine Exploration Geochemical Analyses

2020 ◽  
Vol 115 (3) ◽  
pp. 489-503 ◽  
Author(s):  
Scott Halley
Keyword(s):  
Inductively Coupled Plasma ◽  
Mining Industry ◽  
Analysis Data ◽  
Ore Deposits ◽  
Mineral Deposits ◽  
Geochemical Data ◽  
High Quality ◽  
Inductively Coupled ◽  
Hydrothermal Processes ◽  
Geochemical Analyses

Abstract Analytical methods used by commercial assay laboratories have improved enormously in recent years. Inductively coupled plasma-atomic emission spectroscopy and inductively coupled plasma-mass spectrometry methods now report analyses for half of the periodic table with exceptional detection limits and precision. It is becoming commonplace for mining companies to use such methods routinely for the analysis of drill samples throughout mineral deposits. Improvements in software and computing power now allow rapid interrogation of upward of 100,000 assay samples. Geochemical analyses are quantitative, are independent of observer bias, and can form the basis for robust geologic and mineralogical models of mineral deposits, as well as shed light on scientific questions. In particular, consistently collected, high-quality geochemical analyses can significantly improve and systematize logging of lithological and hydrothermal alteration mineralogic changes within drill core. In addition, abundant, high-quality geochemical data provide insights into magmatic and hydrothermal processes that were previously difficult to recognize and that have obvious applications to mineral exploration and improved genetic models of ore deposits. This paper describes a workflow that mining industry geologists can apply to their multielement analysis data to extract more information about magma compositions and gangue mineralogy.

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