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作者:Johan E. Carlson , Anders Sand
来源:[J].Flow Measurement and Instrumentation(IF 0.971), 2016, Vol.50, pp.135-146Elsevier
摘要:Abstract(#br)Ultrasound based flow measurement methods have a large potential for the mining industry and its processing plants. Ultrasound travel through dense suspensions and is not affected by the magnetic fields sometimes present in this type of equipment.(#br)A cross-correla...
作者:Johan E. Carlson , Anders Sand
来源:[J].International Journal of Mineral Processing(IF 1.378), 2016, Vol.155, pp.55-63Elsevier
摘要:Abstract(#br)In the mining industry, ferromagnetic particles (e.g. magnetite) are concentrated using wet low-intensity magnetic separation (LIMS). The performance is to a large extent controlled by the internal flow conditions in the separator. In previous work, it was shown how ...
作者:Johan E. Carlson , Bertil I. Pålsson
来源:[J].Minerals Engineering(IF 1.207), 2016, Vol.91, pp.55-65Elsevier
摘要:Abstract(#br)In this work an ultrasound-based measurement method is used for monitoring suspension velocity and build-up of magnetic material inside a wet low-intensity magnetic separator, a process used e.g. in beneficiation of magnetite ores. Today the only available option is ...
作者:... Martti O. Toivakka , Johan E. Carlson , Bertil I. Pålsson
来源:[J].Minerals Engineering(IF 1.207), 2015Elsevier
摘要:Abstract(#br)The dynamic behaviour of μm-scale ferromagnetic particles in suspension is of interest for various mineral beneficiation processes. It is, however, difficult to experimentally study such processes at the particle-level. In these instances it can be advantageous ...
作者:... Pär Jonsén , Hans-Åke Häggblad , Johan E. Carlson
来源:[J].High Pressure Research(IF 0.901), 2012, Vol.32 (4), pp.490-508Taylor & Francis
摘要:For investigating high pressure sintering processes, numerical models can be used. This will demand material models which give realistic mechanical response throughout the whole parameter space of the actual process. As the pressures become higher, the material density appro...
作者:Johan E. Carlson , Andreas Linge Tomren ...
来源:[J].Chemometrics and Intelligent Laboratory Systems(IF 2.291), 2014, Vol.139, pp.1-5Elsevier
摘要:Abstract(#br)Dielectric properties of crude oils play an important role in characterization and quality control. Measuring permittivity accurately over a wide range of frequencies is, however, a time-consuming task and existing measurement methods are not easily adapted for real-...
作者:Johan E. Carlson , James R. Gasson ...
来源:[J].Chemometrics and Intelligent Laboratory Systems(IF 2.291), 2012, Vol.114, pp.36-43Elsevier
摘要:Abstract(#br)Multivariate statistical methods, such as Principal Component Analysis (PCA), have been used extensively over the past decades as tools for extracting significant information from complex data sets. As such they are very powerful and in combination with an understand...
作者:Johan E. Carlson , Bertil I. Pålsson
来源:[J].Minerals Engineering(IF 1.207), 2014, Vol.62, pp.2-8Elsevier
摘要:Abstract(#br)The internal material transport and selection processes of the wet low-intensity magnetic separators (LIMS) are poorly understood; this calls for improved measurement techniques. In this work an ultrasonic velocity profiling (UVP) technique for measuring how mat...
作者:Robert Schäfer , Johan E. Carlson , Peter Hauptmann
来源:[J].Ultrasonics(IF 2.028), 2006, Vol.44, pp.e947-e950Elsevier
摘要:Abstract(#br)This work demonstrates the use of a multivariate statistical technique called partial least squares (PLS) to extract material related data by analyzing spectra of ultrasonic pulses. We show how PLS can be used to estimate the concentration of sodium chloride in an aq...
作者:Jesper Martinsson , Johan E. Carlson
来源:[J].Ultrasonics(IF 2.028), 2006, Vol.44, pp.e991-e994Elsevier
摘要:Abstract(#br)In ultrasonic characterization of liquids, gases, and solids, accurate estimation of frequency dependent attenuation and phase velocity is of great importance. Non-parametric methods, such as Fourier analysis, suffers from noise sensitivity, and the variance of the e...

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