Noisy Kites? Exploring Noise Annoyance for Airborne Wind Energy Systems with a Laboratory Listening Experiment

Modelling of phenomena affecting blast furnace burden permeability using the Discrete Element Method (DEM) – A review

Bed permeability is a crucial factor in blast furnace efficiency and stability. The Discrete Element Method (DEM) has been used extensively to model material flow in different parts of the furnace and holds great potential for optimizing the permeability. The inherent computational load is the main bottleneck in using this method to provide...

Ferrous burden behaviour under nut coke mixed charge conditions

Effect of nut coke addition with ferrous burden (pellet and sinter mixture) is experimentally investigated under simulated blast furnace conditions. Nut coke mixing degree was varied (0, 20 and 40 wt-%) as a replacement of the regular coke. During smelting, the ferrous bed evolves through three distinct stages of shrinkage due to indirect...

A comparative study of pellets, sinter and mixed ferrous burden behaviour under simulated blast furnace conditions

Physicochemical behaviour of the pellets, sinters and its mixture (60% pellets: 40% sinter) is investigated by a series of smelting and quenching experiments. For all ferrous raw-material beds, three distinct stages of bed shrinkage occur due to indirect reduction, softening and melting. However, the characteristic nature (displacement,...

Melting behaviour of iron ore pellet bed under nut coke mixed charge conditions

The melting and dripping behaviour of an iron ore pellet bed mixed with nut coke are investigated through a series of quenching, melting and dripping experiments. In the melting bed of iron ore pellets, nut coke acts as a frame to maintain the passage for the gas flow. The iron carburisation level of the pellet shell is found to control the...

Effect of nut coke addition on physicochemical behaviour of pellet bed in ironmaking blast furnace

One of the primary causes that limit the blast furnace productivity is the resistance exerted to the gas flow in the cohesive zone by the ferrous burden. Use of nut coke (10–40 mm) together with ferrous burden proves beneficial for decreasing this resistance. In present study, effect of nut coke addition on the olivine fluxed iron ore pellet...

Characterization of the burden behaviour of iron ore pellets mixed with nut coke under simulated blast furnace conditions

In the blast furnace, nut coke is utilized in a mixture with the ferrous burden to improve the gas permeability. Although applied in a broad range (10–40 mm, 2–23 wt-%), limited information is available on changed burden behaviour in its presence. In the present study, the detailed characterization was performed on the iron ore pellets quenched...

The ALMA Band 9 receiver: Design, construction, characterization, and first light

Aims. We describe the design, construction, and characterization of the Band 9 heterodyne receivers (600–720 GHz) for the Atacama Large Millimeter/submillimeter Array (ALMA). First-light Band 9 data, obtained during ALMA commissioning and science verification phases, are presented as well. Methods. The ALMA Band 9 receiver units (so-called ...

DEM-CFD Modelling of the ironmaking blast furnace

Zoutindringing sluizen IJmuiden: Effect nieuwe sluis op Noordzeekanaal

Deze studie richt zich expliciet op de toename van de zoutindringing op het Noordzeekanaal en het Amsterdam-Rijnkanaal, als gevolg van de aanleg van een nieuwe Noordersluis. In de studie zijn vergelijkende simulaties uitgevoerd voor verschillende varianten van de nieuwe sluis (afmetingen), voor verschillende belastingscenario’s (nat, droog en...

Process Modeling and Optimization of a Submerged Arc Furnace for Phosphorus Production

This article presents a process model of a phosphorus-producing, submerged arc furnace. The model successfully incorporates accurate, multifield thermodynamic, kinetic, and industrial data with computational flow dynamic calculations and thus further unifies the sciences of kinetics and equilibrium thermodynamics. The model is structurally three...

Hydro-dynamics in the Wadden Sea during storm conditions: Analysis of storms of 1 Nov. 2006 and 18 Jan. 2007.

For two historical storms the water levels and currents in the Wadden Sea were simulated using the so-called model-train of Rijkswaterstaat. The first storm of 1 Nov. 2006 generated exceptionally high water levels in the Eems-Dollard estuary. The second storm of 18 Jan. 2007 was also scaled up to represent a 1 in 4000 year design storm. In...

De bereiding van vinylchloride

Document(en) uit de collectie Chemische Procestechnologie