Development of an approximation model for the evaluation of slag treatment strategies
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2022)
Sustainable management of resources and circular economy are key focal points of research and development activities within the iron and steel industry. In the project Slagreus, a novel approach enhancing internal and external recycling of basic oxygen furnace (BOF) slag has been developed.
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2022)
Sustainable management of resources and circular economy are key focal points of research and development activities within the iron and steel industry. In the project Slagreus, a novel approach enhancing internal and external recycling of basic oxygen furnace (BOF) slag has been developed.
“Spray-Slag” – Processing of liquid blast furnace slag
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2022)
Blast furnace slags are a by-product of iron production. These slags typically are used in powder form in the building industry, e.g. as an additive for cement production. Therefore, the liquid slags are wet granulated, dried and grinded, which is an energy, water and emission intensive process. To save natural resources, reduce the CO2-emissions and enhance the flowability of the particles, the liquid state of the slag and its heat energy could be utilized by atomizing the melt directly at the blast furnace.
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2022)
Blast furnace slags are a by-product of iron production. These slags typically are used in powder form in the building industry, e.g. as an additive for cement production. Therefore, the liquid slags are wet granulated, dried and grinded, which is an energy, water and emission intensive process. To save natural resources, reduce the CO2-emissions and enhance the flowability of the particles, the liquid state of the slag and its heat energy could be utilized by atomizing the melt directly at the blast furnace.
Improving the dry magnetic separation of BOF-slag by applying an
innovative pre-treatment process
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2022)
To approach circular economy by enhancing the internal recycling potential of BOFslag, an innovative pre-treatment process for the dry magnetic separation is investigated. It consists of slow-cooling to enlarge the slag crystals, followed by microwave irradiation to generate intergranular cracks to enhance the mineral liberation during comminution. It can be shown that the pre-treatment leads to an increase in the separation degree by at least four percent. This can be further enhanced by a factor of five by using solid-state oxidation.
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2022)
To approach circular economy by enhancing the internal recycling potential of BOFslag, an innovative pre-treatment process for the dry magnetic separation is investigated. It consists of slow-cooling to enlarge the slag crystals, followed by microwave irradiation to generate intergranular cracks to enhance the mineral liberation during comminution. It can be shown that the pre-treatment leads to an increase in the separation degree by at least four percent. This can be further enhanced by a factor of five by using solid-state oxidation.
Vegetable oil extraction of petroleum hydrocarbons from soil and subsequent separation via non-woven fabrics
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2020)
The current combination, though, of using microemulsions of plant oil in water to extract mineral hydrocarbons in-situ from the soil and to separate that contaminated oil phase from water via non-wovens is novel and in preliminary experiments was shown be to very promising in terms of costs and performance.
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2020)
The current combination, though, of using microemulsions of plant oil in water to extract mineral hydrocarbons in-situ from the soil and to separate that contaminated oil phase from water via non-wovens is novel and in preliminary experiments was shown be to very promising in terms of costs and performance.
Enhancing of the Energy Efficiency of an Existing Waste Incineration Plant by Retrofitting with a District Heating Network
© ThomĂ©-Kozmiensky Verlag GmbH (9/2016)
The German Cycle Economy Act (Kreislaufwirtschaftsgesetz KrWG) and discussions on the turn of local energy policies led to intensive examination of options for optimising utilisation of heat produced by the waste incineration plant (MKW) in Weißenhorn. This has been carried out by the waste management firm(Abfallwirtschaftsbetrieb – AWB) of the district of Neu-Ulm over a long period of time. This was also prompted by knowledge that utilisation of already generated energy in the form of combined heat and power generation (CHP) is one of the most efficient ways of achieving climate protection targets. This results from considering which courses of action are available for climate protection.
© ThomĂ©-Kozmiensky Verlag GmbH (9/2016)
The German Cycle Economy Act (Kreislaufwirtschaftsgesetz KrWG) and discussions on the turn of local energy policies led to intensive examination of options for optimising utilisation of heat produced by the waste incineration plant (MKW) in Weißenhorn. This has been carried out by the waste management firm(Abfallwirtschaftsbetrieb – AWB) of the district of Neu-Ulm over a long period of time. This was also prompted by knowledge that utilisation of already generated energy in the form of combined heat and power generation (CHP) is one of the most efficient ways of achieving climate protection targets. This results from considering which courses of action are available for climate protection.
Real-time Analysis of Solid Recovered Fuels using Sensor Technology
© ThomĂ©-Kozmiensky Verlag GmbH (12/2015)
Quality assurance plays an important role for the production and utilization of solid recovered fuels (SRF) generated from municipal solid and production waste.
© ThomĂ©-Kozmiensky Verlag GmbH (12/2015)
Quality assurance plays an important role for the production and utilization of solid recovered fuels (SRF) generated from municipal solid and production waste.
Framework Requirements for Harmonising Food Waste Monitoring
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
The overall problem when comparing food waste data is the lack of a common food waste Definition as well as different methodological approaches in use for quantifying food waste throughout the food supply chain (FSC). Both challenges are targeted by the FP7-funded project FUSIONS which runs between years 2012-2016.
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
The overall problem when comparing food waste data is the lack of a common food waste Definition as well as different methodological approaches in use for quantifying food waste throughout the food supply chain (FSC). Both challenges are targeted by the FP7-funded project FUSIONS which runs between years 2012-2016.
SolidWasteSim – Simulation of Solid Waste Treatment
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
A critical analysis of mechanical processes in waste treatment plants hints at vulnerable spots in the interaction of plant units and deployed heterogeneous materials. The Simulation of mechanical processes in waste treatment may depict the total material flow in a plant and as such, contribute to a better understanding of the behaviour in heterogeneous materials, to identify bottlenecks, to check plant modifi cations and hence, to support planning and reducing time for implementation period.
© Lehrstuhl fĂĽr Abfallverwertungstechnik und Abfallwirtschaft der Montanuniversität Leoben (11/2014)
A critical analysis of mechanical processes in waste treatment plants hints at vulnerable spots in the interaction of plant units and deployed heterogeneous materials. The Simulation of mechanical processes in waste treatment may depict the total material flow in a plant and as such, contribute to a better understanding of the behaviour in heterogeneous materials, to identify bottlenecks, to check plant modifi cations and hence, to support planning and reducing time for implementation period.
Leakage control of Biogas plants
© European Compost Network ECN e.V. (6/2012)
Anaerobic digestion has become a very important technology to treat organic waste and to generate renewable energy. During construction and operation leaks at biogas plants may occur and methane is emitted. Further Authors: S. Neitzel - Systemtechnik Weser-Ems S. Kohne - esders Ltd
© European Compost Network ECN e.V. (6/2012)
Anaerobic digestion has become a very important technology to treat organic waste and to generate renewable energy. During construction and operation leaks at biogas plants may occur and methane is emitted. Further Authors: S. Neitzel - Systemtechnik Weser-Ems S. Kohne - esders Ltd
Composting of pic Faeces with corn stalks in China - Microbiological examinations; hygienic aspects and sanitation capacity
© European Compost Network ECN e.V. (6/2012)
With the increasing demand for meat (pork) the pig production in China increased over the last years,especially in the Northern East of China around mega cities like Beijing. Increasing pig production in large scale pigfarms head to enormous amounts of organic wastes (such as pig faeces), over-fertilization of agricultural areas andenvironmental pollution in regions with high pig production and density. Further Authors: Wang M., He C., Ling Y., Liu Y - China Agricultural University
© European Compost Network ECN e.V. (6/2012)
With the increasing demand for meat (pork) the pig production in China increased over the last years,especially in the Northern East of China around mega cities like Beijing. Increasing pig production in large scale pigfarms head to enormous amounts of organic wastes (such as pig faeces), over-fertilization of agricultural areas andenvironmental pollution in regions with high pig production and density. Further Authors: Wang M., He C., Ling Y., Liu Y - China Agricultural University
