scholarly journals Technologies for Decreasing Mining Losses

2013 ◽  
Vol 11 ◽  
pp. 41-47
Author(s):  
Ingo Valgma ◽  
Vivika Väizene ◽  
Margit Kolats ◽  
Martin Saarnak
Keyword(s):  
Material Flow ◽  
Oil Shale ◽  
Mineral Resources ◽  
Screening Process ◽  
Extraction And Separation ◽  
Selective Mining ◽  
Process Simulations ◽  
Final Yield

Abstract In case of stratified deposits like oil shale deposit in Estonia, mining losses depend on mining technologies. Current research focuses on extraction and separation possibilities of mineral resources. Selective mining, selective crushing and separation tests have been performed, showing possibilities of decreasing mining losses. Rock crushing and screening process simulations were used for optimizing rock fractions. In addition mine backfilling, fine separation, and optimized drilling and blasting have been analyzed. All tested methods show potential and depend on mineral usage. Usage in addition depends on the utilization technology. The questions like stability of the material flow and influences of the quality fluctuations to the final yield are raised.

Assessment of European Demand for Mineral Resources by Material Flow Analyses: The Case of Cobalt

2021 ◽  
pp. 1-33
Author(s):  
Raphaël Danino‐Perraud ◽  
Maïté Legleuher ◽  
Dominique Guyonnet
Keyword(s):  
Material Flow ◽  
Mineral Resources

Formation Mechanisms of Stalinist Oil-Shale Mining and Industrial Towns in East Estonia: Soviet Nuclear Needs and Local Ambitions

2020 ◽  
pp. 009614421988850
Author(s):  
Siim Sultson
Keyword(s):  
Soviet Union ◽  
Urban Planning ◽  
Oil Shale ◽  
Mineral Resources ◽  
Arms Race ◽  
Formation Mechanisms ◽  
The Soviet Union ◽  
Oil Shale Mining ◽  
Nuclear Arms Race ◽  
Construction Plans

Planning of oil-shale mining and industrial towns Kohtla-Järve, Jõhvi, Sillamäe, Ahtme, Sompa, Kukruse, Kiviõli, Kohtla-Nõmme, and Viivikonna was caused by Soviet Union’s need for mineral resources, nuclear arms race, army, industry, and economy. East Estonian region gained strategic importance for the Soviet Union already in 1940. Although these towns were planned mostly by nonlocal architects and stately architectural firms, for instance, Stalinist central gridlines and central urban ensembles of Kohtla-Järve and Sillamäe were designed under the guidance of local architect Harald Arman. As a head of the Department of Architecture of the Estonian SSR, he processed both masterplans and construction plans of those towns within ambitious planning of oil-shale region during the mid-1940s and early-1950s. Those factors established urban planning principles and a pattern of East Estonian oil-shale mining and industrial towns.

Jordanian mining push will produce limited results

2019 ◽  
Keyword(s):  
Foreign Exchange ◽  
Oil Shale ◽  
Mining Industry ◽  
Mineral Resources ◽  
Economic Conditions ◽  
The South ◽  
Mining Sector ◽  
Content Type ◽  
The Government ◽  
Initial Exploration

Subject Outlook for the mining sector. Significance In recent years, the government has begun a drive to diversify the mining sector away from its traditional focus on potash and phosphates. Initial exploration efforts have offered promising indications of the potential for mining new metallic and mineral resources, especially in the south of Jordan. Impacts Recent proposals to reduce electricity tariffs would attract more interest in the mining industry if implemented. The government may begin considering additional incentives for miners. Successful exploitation of oil shale will reduce energy imports and shore up Amman’s foreign exchange and debt position. Mining sector employment will grow, but not by enough to have a significant impact on wider discontent over socio-economic conditions.

Processing technology for carbonate ore from the Argun deposit

2021 ◽  
pp. 86-91
Author(s):  
V. V. Golovko ◽  
E. Yu. Meshkov ◽  
V. G. Litvinenko
Keyword(s):  
Mineral Resources ◽  
Uranium Content ◽  
Natural Uranium ◽  
Ion Exchangers ◽  
Autoclave Leaching ◽  
Extraction And Separation ◽  
Anion Exchange Resins ◽  
Ore Bodies ◽  
Atmospheric Leaching ◽  
Exchange Resins

Priargun Mining and Chemical Association has been producing uranium in the Streltsov ore field for more than 50 years. The main ore bodies with high content of uranium have been mined out during this period of time, and the uranium content has dropped in ore which is currently extracted. In connection with this, appraisal of the mineral resources and mineral reserves of Priargun MCA has been accomplished. The Argun ore is composed of a few process types—iron silicate and uranium, silicate–uranium–molybdenum, carbonate and uranium, carbonate and molybdenum, carbonate–uranium–molybdenum and rebellious ore (contains zirconium and brannerite). It is required to undertake technology-based rating and certification of the Argun ore. The autoclave leaching technology is found to be higher economically efficient as against the atmospheric leaching technology due to lower operating expenses. From the preliminary studies, four samples of anion-exchange resins are recommended for further testing: A500Y, BM77-14, D299 and Ambersep 920UXL SO4. These ion-exchangers were used to analyze their influence on sorption–desorption of uranium and molybdenum. All these ion exchangers had preserved their sorption capacity in 10 sorption–desorption cycles. Based on the studies into adsorption of uranium and molybdenum from leached slurry at the Argun deposit, the optimal sorbent for extraction and separation of uranium and molybdenum is Ambersep 920UXL SO4. Producibility of natural uranium to meet ASTM C 967-13 standards is analyzed on a laboratory scale. The produced uranium concentrate contains much less impurities than it is stipulated by International Standard Specification ASTM С 967-13. The action chart of processing of carbonate ore from the Argun and Zherlovoe deposits is developed and economically justified.

Material Flow of the Mineral Resource Development

2013 ◽  
Vol 734-737 ◽  
pp. 1053-1059
Author(s):  
Qin Jun Du ◽  
Liu Liu Su ◽  
Ming Min Liu
Keyword(s):  
Mineral Resource ◽  
Analytical Method ◽  
Index System ◽  
Material Flow ◽  
Flow Analysis ◽  
Material Flow Analysis ◽  
Mineral Resources ◽  
Mineral Industry ◽  
Account System ◽  
Set Up

On the basis of the meaning of material metabolism of mineral resources development (MRD), its characteristics are analyzed, such as complexity, controllability, consecution and differences. The material flow analysis on MRD can provide basis in environment pressure of mineral resources analyzing and provide support for the circulation economy of mineral industry. The analytical method of the material flow analysis of MRD is put forward, and the account system and index system are set up.

Role of technological researches in development of the mineral raw materials complex of the Timan-North Ural region

2018 ◽  
Vol 5 ◽  
pp. 38-47
Author(s):  
I.N. Burtsev ◽  
◽  
O.B. Kotova ◽  
D.V. Kuzmin ◽  
D.O. Mashin ◽  
...  
Keyword(s):  
Oil Shale ◽  
Raw Materials ◽  
Mineral Resources ◽  
Ural Region ◽  
Industrial Minerals ◽  
Mineral Raw Materials ◽  
Technological Assessment ◽  
Effective Use

Actual problems of a technological assessment of mineral raw materials of the Timan-North Ural region are considered. The role of scientific developments in development and effective use of mineral resources of the region is shown. Results of technological researches of coals, oil shale, bauxites, titanium ores, industrial minerals are given.

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