Der Datensatz beinhaltet Informationen zu Gebieten mit Gefährdungen durch naturbedingte Risiken im Freistaat Sachsen. Dargestellt werden Gebiete mit Gefährdungen durch Hochwasser, Hohlraumgebiete, Gebiete mit Subrosionsgefährdung, durch Massenbewegungen verursachte Einzelereignisse sowie seismologische Ereignisse.
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Der Darstellungsdienst präsentiert Informationen zu Gebieten mit Gefährdungen durch naturbedingte Risiken im Freistaat Sachsen. Dargestellt werden Gebiete mit Gefährdungen durch Hochwasser, Hohlraumgebiete, Gebiete mit Subrosionsgefährdung, durch Massenbewegungen verursachte Einzelereignisse sowie seismologische Ereignisse.
Die Daten sind Bestandteil der Verwaltungsvorschrift Hohlraumgebiete des Sächsischen Oberbergamtes. Sie enthalten Gebiete, in denen unterirdische Hohlräume bekannt sind (Hohlraumgebiete) und Gebiete mit unterirdischen Hohlräumen, die dem Geltungsbereich des Bundesberggesetzes unterliegen (Gebiete mit Grubenbauen unter Bergaufsicht). Die in der Hohlraumkarte ausgewiesenen Hohlraumgebiete umfassen die digitalisierten Gebiete der thematischen Karte "Alter Bergbau" im Maßstab 1:25000. Weitere Informationen zu Gebieten mit unterirdischen Hohlräumen finden Sie unter http://www.bergbau.sachsen.de/8181.html. Die Daten der geotechnischen Sperrbereiche der LMBV mbH beruhen auf den digital geführten Daten des Bergmännischen Risswerkes nach Bundesberggesetz (BBergG) §§ 63, 64 und wurden durch datentechnische Transformation in das verwendete Herausgeberformat im Geoportal der LMBV mbH umgewandelt.
Hard coal mine in Ostrava Auslastung: 7000h/a Brenn-/Einsatzstoff: Ressourcen Flächeninanspruchnahme: 2000000m² gesicherte Leistung: 100% Jahr: 2015 Lebensdauer: 25a Leistung: 2000MW Nutzungsgrad: 100% Produkt: Brennstoffe-fossil-Kohle
Ehemalige verfüllte Schächte des Bergbaus als Punkt-Geometrie aus den R-/H-Werten generiert, z.T. ergänzt von 60/5
technologyComment of iron ore beneficiation (IN): Milling and mechanical sorting. Average iron yield is 65% . The process so developed basically involves crushing, classification, processing of lumps, fines and slimes separately to produce concentrate suitable as lump and sinter fines and for pellet making. The quality is essentially defined as Fe contents, Level of SiO2 and Al2O3 contamination. The process aims at maximizing Fe recovery by subjecting the rejects/tailings generated from coarser size processing to fine size reduction and subsequent processing to recover iron values. technologyComment of iron ore beneficiation (RoW): Milling and mechanical sorting. Average iron yield is 84%. technologyComment of iron ore mine operation and beneficiation (CA-QC): Milling and mechanical sorting. Average iron yield is 75%. Specific data were collected on one of the two production site in Quebec. According to the documentation available, the technologies of the 2 mines seems similar. Uncertainity has been adjusted accordingly. technologyComment of niobium mine operation and beneficiation, from pyrochlore ore (BR, RoW): Open-pit mining is applied and hydraulic excavators are used to extract the ore with different grades, which is transported to stockpiles awaiting homogenization through earth-moving equipment in order to attain the same concentration. Conveyor belts (3.5 km) are utilized to transport the homogenized ore to the concentration unit. Initially, the ore passes through a jaw crusher and moves to the ball mills, where the pyrochlore grains (1 mm average diameter) are reduced to diameters less than 0.104 mm. In the ball mills, recycled water is added in order to i) granulate the concentrate and ii) remove the gas from the sintering unit. The granulated ore undergoes i) magnetic separation, where magnetite is removed and is sold as a coproduct and ii) desliming in order to remove fractions smaller than 5μm by utilizing cyclones. Then the ore enters the flotation process - last stage of the beneficiation process – where the pyrochlore particles come into contact with flotation chemicals (hydrochloric & fluorosilic acid, triethylamene and lime), thereby removing the solid fractions and producing pyrochlore concentrate and barite as a coproduct which is also sold. The produced concentrate contains 55% Nb2O5 and 11% water and moves to the sintering unit, via tubes or is transported in bags while the separated and unused minerals enter the tailings dam. In the sintering unit, the pyrochlore concentrate undergoes pelletizing, sintering, crushing and classification. These units not only accumulate the material but are also responsible for removing sulfur and water from the concentrate. Then the concentrate enters the dephosphorization unit, where phosphorus and lead are removed from the concentrate. The removal of sulphur and phosphorus have to be executed because of the local pyrochlore ore composition. Then the concentrate undergoes a carbothermic reduction by using charcoal and petroleum coke, producing a refined concentrate, 63% Nb2O5 and tailings with high lead content that are disposed in the tailings dam again. technologyComment of rare earth element mine operation and beneficiation, bastnaesite and monazite ore (CN-NM): Firstly, open pit, mining (drilling and blasting) is performed in order to obtain the iron ore and a minor quantity of rare earth ores (5−6 % rare earth oxide equivalent). Then, a two-step beneficiation process is applied to produce the REO concentrate. In the first step, ball milling and magnetic separation is used for the isolation of the iron ore. In the second step, the resulting REO tailing (containing monazite and bastnasite), is processed to get a 50% REO equivalent concentrate via flotation. technologyComment of rare earth oxides production, from rare earth oxide concentrate, 70% REO (CN-SC): This dataset refers to the separation (hydrochloric acid leaching) and refining (metallothermic reduction) process used in order to produce high-purity rare earth oxides (REO) from REO concentrate, 70% beneficiated. ''The concentrate is calcined at temperatures up to 600ºC to oxidize carbonaceous material. Then HCl leaching, alkaline treatment, and second HCl leaching is performed to produce a relatively pure rare earth chloride (95% REO). Hydrochloric acid leaching in Sichuan is capable of separating and recovering the majority of cerium oxide (CeO) in a short process. For this dataset, the entire quantity of Ce (50% cerium dioxide [CeO2]/REO) is assumed to be produced here as CeO2 with a grade of 98% REO. Foreground carbon dioxide CO2 emissions were calculated from chemical reactions of calcining beneficiated ores. Then metallothermic reduction produces the purest rare earth metals (99.99%) and is most common for heavy rare earths. The metals volatilize, are collected, and then condensed at temperatures of 300 to 400°C (Chinese Ministryof Environmental Protection 2009).'' Source: Lee, J. C. K., & Wen, Z. (2017). Rare Earths from Mines to Metals: Comparing Environmental Impacts from China's Main Production Pathways. Journal of Industrial Ecology, 21(5), 1277-1290. doi:10.1111/jiec.12491 technologyComment of scandium oxide production, from rare earth tailings (CN-NM): See general comment. technologyComment of vanadium-titanomagnetite mine operation and beneficiation (CN): Natural rutile resources are scarce in China. For that reason, the production of titanium stems from high-grade titanium slag, the production of which includes 2 processes: i) ore mining & dressing process and ii) titanium slag smelting process. During the ore mining and dressing process, ilmenite concentrate (47.82% TiO2) is produced through high-intensity magnetic separation of the middling ore, which is previously produced as a byproduct during the magnetic separation sub-process of the vanadium titano-magnetite ore. During the titanium slag smelting process, the produced ilmenite concentrate from the ore mining & dressing process is mixed with petroleum coke as the reducing agent and pitch as the bonding agent. Afterwards it enters the electric arc furnace, where it is smelted, separating iron from the ilmenite concentrate and obtaining high-grade titanium slag.
Das Projekt "Windtec 1200 kW-cost/light-weight wind turbine" wird vom Umweltbundesamt gefördert und von Windtest Kaiser-Wilhelm-Koog durchgeführt. General Information/Objectives: The objective of the project is to develop a 3-bladed, 1.2 MW, variable speed, pitch controlled wind turbine, with (a) reduced tower head mass, (b) optimized energy yield for low wind speed regimes, and (c) improved logistics with strong emphasis on the erection of the turbine without crane. The combination of all these improvements are expected to lead to reduced costs of power production, whereby the goal is to produce electrical power for 0.038 ECU/kWh in a wind regime of 8 m/s at a hub height of 60 m. Technical Approach Above objectives are achieved by developing various new components as: (1) Improved variable speed power electrics on the basis of a doubly fed induction generator. (2) Integrated drive train design with the main target of reducing weight and costs. (3) Light weight rotor blade design, utilizing carbon fibre technology. (4) Optimized slip-form concrete tower designed to reduce costs and to improve the dynamics of the complete system. (5) Modular nacelle design including an on-board erectable crane system, which allows the nacelle and the rotor to be installed without an external mobile crane. After the engineering phase a prototype will be manufactured and installed in the eastern part of Austria. Loads and performance measurements will be performed and reported under the Scientific Measurement and Evaluation Programme (SMEP), which was developed for the WEGA-II machines. The analysis of the measurements will be the basis for (a) the validation of the design and the performance of the wind turbine, and (b) further improvements of the design. Expected Achievements and Exploitation The expected outputs of the project are: (1) Validation of software programs by comparing dynamic simulations with measurements. (2) Development of a variable speed power electrics system, which is highly efficient and at the same time very cost effective. (3) Development of a light weight rotor blade with high aerodynamic efficiency. (4) Improvement of the logistics for the installation of a MW-class wind turbine. The combination of all these features should lead to a wind turbine with substantially improved economics by guaranteeing excellent power quality. Prime Contractor: Windtec Anlagenerrichtung- und Consulting GmbH; Völkermarkt; Austria.
Die Daten sind Bestandteil der Verwaltungsvorschrift Hohlraumgebiete des Sächsischen Oberbergamtes. Sie enthalten Gebiete, in denen unterirdische Hohlräume bekannt sind (Hohlraumgebiete) und Gebiete mit unterirdischen Hohlräumen, die dem Geltungsbereich des Bundesberggesetzes unterliegen (Gebiete mit Grubenbauen unter Bergaufsicht).
Das Projekt "250-KW-Windturbine fuer Husum" wird vom Umweltbundesamt gefördert und von Husumer Schiffswerft durchgeführt. Objective: To achieve maximum use of wind energy and to gain experience by the construction of a 250 kW wind turbine at Husumer Schiffswerft. General Information: A 3 bladed, 25 m diameter, 250 kW wind turbine has been constructed by Husumer Schiffswerft and will be installed near the factory. The energy generated is fed into the factory grid; possible surplus is returned to the grid. The construction in modules aiming to obtain maximum capacity is innovative, as well as the single bearing basement of the nacelle. Furthermore, universal rotor hub allowing the installation of fixed pitch and variable pitch blades with improved blade-flange and blade-surface. The estimated annual yield at the site of installation is 500 MWh/yr which yields to a cost of energy generated of about 0,123DM/kWh. Payback time is estimated to 11 years which is expected to be reduced at about 5 years when the machine will be produced in series. Achievements: Machine installed on the 25.03.88. Continuous unmanned operation up to date considered as very successful. The measurement data acquisition system has regularly recorded the operating data and electricity outputs. The plant runs perfectly on automatic and feeds its energy into the grid. In 1989 the HSW-250 produced 361 MWH of electricity, operating 5616 h, with a mean annual wind speed of 5.1 m/s. Some changes have been made to the production machines as a result of experience with the prototype. Tip breaks are no longer used because of the noise the generate. Emphasis paid to the inclusion of a 'soft start' system. Over 100 machines have been built, derived directly from the prototype funded by this project, very high level of replication. A 750 kw W.T. was also developed along similar lines.
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