FG Aufbereitungstechnik und Sekundärrohstofftechnologie (ehemals)
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- Flocculation (7)
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- Binary mixtures; Solid liquid equilibrium; Saturated and unsaturated fatty acids; Phase diagram; DSC (1)
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- Differential scanning calorimeter, Fatty acids, Liquid-solid phase diagram, Metastable zone, Multistage melt crystallization (1)
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- Fatty acid (1)
- Fe-fines (1)
- Feststoff-Flüssigkeitsgemisch, Rollagglomerations-Vorrichtung, Rollagglomeration, Entwässerung, Agglomeratbildung, (1)
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- Flocculation, wet-pelletizing, Taylor-Couette-reactor, water purification, Iron(III)-hydroxide-containing material, pelletizing-flocculation (1)
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- Linseed oil, melt crystallization, unsaturated fatty acids, differential scanning caloriemetry (1)
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- Melt crystallization, Focused beam reflectance method, Differential Scanning Calorimeter, Fatty Acids, Induction time, Gibbs free enthalpy of crystallization, Fisher Turnbull equation, Supercooling, Activation barrier (1)
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- Polarized light microscopy, PUFA, melt crystallization (1)
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- Reynolds-Zahl (1)
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- Sprühgranulation Lignin-Agglomerate, Agglomeration von Ligninen (1)
- Strömungsverhalten (1)
- Technical Days, Li-Ionen-Akku, Recycling, Sekundärrohstoff (1)
- Ternary mixtures (1)
- Titan (1)
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- adsorption capacity (1)
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- floc stability, hydrodynamics, pelleting flocculation, sludge, turbulence (1)
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- lithium traction accumulator (1)
- melt crystallization (1)
- natural fibres (1)
- naturfaserverstärkte Kunststoffe (1)
- pellet flocs (1)
- poly-unsaturated fatty acid mixture (1)
- porous carbons (1)
- recycling (1)
- recycling, separation (1)
- regenerative Energien (1)
- robotergestützt (1)
- roller table, rollagglomeration, fiber agglomeration (1)
- supercapacitors (1)
Institute
Ersatz von Glasfasern
(2004)
Presently the global commodity situation for non ferrous-, precious- and rare metals is characterized by a strong increase in onsumption and a simultaneous shortage of materials derived from primary sources. So the use of secondary raw materials gains is important due to economic and ecological reasons.
Non Ferrous-, precious- and rare earth metals were detected in household waste (Municipal solid waste, MSW) for years. In MSW-treatments plants NF-metals are actually mostly separated from dried fractions. The separation of these metals is carried out with the aim of removing particles which disrupt further processing. A selective enrichment of individual non-ferrous metals has not been carried out previously. The separated fractions contain mixtures of Al, Cu, Zn, Pb, Sn, alloys, precious metals (e. g. Au, Ag, Pt) and rare metals (Ga, In, Nd etc.) along with considerable amounts of contaminations.
The R&D project “NE-Rec” selectively processes the coarsely separated non-ferrous-metal-conglomerates increasing the concentration of targeted metals. Metals and metal mixtures are concentrated by sorting steps and the impurities are discharged from the process. Still contaminated precious metals are then subjected to a wet-chemical treatment. So metals can be specifically brought into solution or can be precipitated to separate unwanted components (inerts, polymers, foreign metals). Further the relevant metals will be concentrated by thermal-metallurgical processes.
The technology, developed in the R&D project, enables identification, separation and processing of non-ferrous metals, precious metals and REM in household waste and transfers them into further processable individual fractions.
Technical realization of the innovative roll-agglomeration of bast fibres in industrial scale
(2014)
The EU Directive 2000/53/EC on end-of life vehicles (ELVs) states that in 2015 at least 85 wt.-% of a vehicle
has to be reused or recycled. This result in the obligatory need to separate additionally metallic and other
components of the automotive shredder residues (ASR), so that they can be professionally prepared for recycling and reuse further. Currently the iron-containing fines of ASR are deposited as it is not possible to process in blast furnaces due to its particle size (< 4 mm), composition and material properties. Additionally problems are also caused in handling and transportation (dust) of the material. This work focuses mainly on the ASR materials utilization in blast furnaces. Material was further separated into two consecutive fractions by carrying out repeated crushing and magnetic separation twice. The two fractions have significantly higher iron content (up to 75 wt.-%) compared to the initial material mixture. The
materials were assessed for their usage in blast furnaces based on the possible pelletisation with and without binders, stability of pellets, shape and size of pellets, etc. Pelletisation of the material was carried out with a single mould pellet press. Further lignite coal was added to the mixture as additive which improved the
pelletisation behavior and the mechanical stability of pellets. Lignite coal was chosen as reducing agent in
the blast furnace process contributing towards additional savings in energy supplied. The experiments reveal that the production of pellets from iron-containing fines is possible with a lignite coal admixture of about 15 wt.-%. These pellets displayed good mechanical stability and can be used in blast furnace processes in recovery of the recyclable metals which are currently not recycled. The recycling of not yet recyclable metals would reduce the deposition and can be easily adopted into the economic cycle by their utilization.
Within the next few years major changes in mobility are expected. Increasing numbers of electric powered cars, electrobikes and E-Scooters define the transport sector. Recently lithium based traction batteries as storage medium have led into matrurity of series production combining high electrical efficiencies with low weights and compact dimensions. Due to the relatively young development with lithium batteries utilization, only few investigation were conducted regarding their recycling. Conventional battery recycling processes can not be applied due to differences in design and chemistry.
So an automated disassembly and processing procedure for lithium traction batteries has been developed in the R/D-project "Li-WERT". Instead of complete smelting of the batteries without pretreatment, an automated disassembly and specific treatment of the material streams was realised, adjusted to the needs of the subsequent recovery technologies. A higher quality, with reduced expenses for the separation of fine-grained or fused material mixes, can be obtained for the individual components. The automated disassembly using an industrial robot significantly reduces dangers for the operating crew.
The selective disassembly and beneficiation allows full recovery of the fractions. The batteries will be disassembled to cell level by the industrial robot. Anodes, cathodes, and separation layers are isolated and processed. The technology is designed, that no waste is generated for disposal. The pelletised cathode coating and the other separated metals (stainless steel, copper, aluminum) can be used in respective metallurgical plants. Circuit boards and plug contacts are also coveted secondary raw materials for reuse.
The process is modular and offers high flexibility, e. g. for new battery types/ sizes by quick adjustment of the robot and tool change. Adaptation to other cathode materials (e. g. Li[FePO]) is possible. After finishing the R/D-project, a pilot plant for demontage was realised in 2013.
The invention relates to a method and device for the continuous production of fiber agglomerates by rolling agglomeration. For the production of an agglomerate, a portion of the fiber material is introduced into a ring-shape roller table which closed on all sides except for an input opening an an output opening. The fiber material portion introduced into the roller table is transported through the roller table by means of a relative movement of two surfaces of the roller table toward each other, the surfaces lying opposite each other. The fiber material is compressed in the roller table and finally discharged from an output opening of the roller table as fiber agglomerate. According to the invitation, the portioning of the fiber material is carried out by the pulling of an amount of fibers out of a stock of corresponding fiber materials is provided on a supply table for each input opening of a roller table, and portions are continously pulled out of said stock by the repeated movement through the sock of carrier means of a pulling device designed therefor and released into the roller table.
Hauptanspruch: Verfahren zur Herstellung von kugelförmigen Gebilden aus Fasern, - indem das Fasermaterial portioniert wird, - die portionierte Menge von Fasern in einem horizontal und vertikal begrenzten kreisförmig ausgebildeten Rollraum auf einem konstanten Umlaufradius einem Rollprozess unterzogen wird, der durch unterschiedliche Relativbewegungen zueinander erzeugende Rotationen einzelner ebener kreisförmiger Bauteile charakterisiert ist und - nach Erreichen einer im Wesentlichen allseitig nahezu runden Form der portionierten Menge von Fasern diese als Rollagglomerat aus dem Rollprozess ausgetragen wird.
Die automobile Antriebstechnik steht in den nächsten Jahrzehnten vor tief greifenden Verän-derungen. Nachdem über 125 Jahre der Verbrennungsmotor die vorherrschende Antriebsart darstellte, basieren neue Entwicklungen auf Elektroantrieben oder auf der Kombination ver-schiedener Antriebsformen. Fahrzeuge mit elektrischen Antrieben haben mittlerweile den Status der Serienreife erreicht und werden perspektivisch zunehmend das Straßenbild be-stimmen.
Mit der so genannten Lithium-Ionen-Traktionsbatterie wurde in den letzten Jahren ein Spei-chermedium zur Serienreife geführt, welches einen hohen elektrischen Wirkungsgrad mit kompakten Maßen und geringem Eigengewicht vereinigt. Mit den auf der Nutzung von Li-thium-Akkumulatoren basierenden Antriebskonzepten kann ein entscheidender Schritt zur Umsetzung einer umfassenden Verbreitung der elektrischen Antriebstechnik im Bereich der individuellen Mobilität erfolgen.
Innovative technologies for production of highly pure substances and bio fine chemicals from plants
(2010)
Build-up granulation of lignin sludge’s as innovative process improving its energy efficiency
(2012)
Die Erfindung betrifft eine Rollagglomerations-Vorrichtung zur Herstellung von Agglomeraten aus einem Feststoff-Füssigkeitsgemisch. Die Vorrichtung weist ein Transportmittel zum Transport eines Feststoff-Flüssigkeitsgemisches in Richtung der Längsachse des Transportmittles und ein Pressmittel auf, welches so zum Transportmittel beabstandet angeordnet ist, dass ein Pressmittel auf das auf der Auflagefläche des Transportmittels befindlichen Feststoff-Flüssigkeitsgemisches einen Druck ausüben kann, wobei das Transportmittle oder das Pressmittel quer zur Längsachse des Transportmittels bewegbar sind.
Die Erfindung betrifft ein Verfahren zur Herstellung von wasserunlöslichen Agglomeraten aus Ablauge eines Cellulosegewinnungsprozesses. Erfindungsgemäß umfasst das Verfahren die folgenden Schritte: 1. Durchführung einer Granulation mit der Ablauge zur Erzeugung von Lignin-Agglomeraten und 2. Behandeln der erzeugten Lignin-Agglomerate mit einer Säure.