A novel two degrees of freedom system for measuring iron ore water content on a conveyor belt.

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dc.contributor.authorPinto, Érica Silva
dc.contributor.authorSantos, Gabriel Almeida
dc.contributor.authorMagalhães, Paulo Henrique Vieira
dc.contributor.authorRêgo Segundo, Alan Kardek
dc.date.accessioned2022-10-04T21:12:02Z
dc.date.available2022-10-04T21:12:02Z
dc.date.issued2021pt_BR
dc.description.abstractWater content or moisture of materials is a parameter widely used in the industry. In mining, it is an important variable to control in iron ore production. High moistures may cause instability of iron ore piles and may make transport by ship unfeasible. Therefore, this paper presents the development of a system for measuring iron ore moisture on a conveyor belt (laboratory-scale). The structure that supports the sensor has two degrees of freedom, which allow perpendicular and parallel movements. The parallel movement makes the relative velocity between the measurement cell and the ore almost zero. The vertical movement allows the sensor to be placed at different depths in the ore. These sets enable real-time and in situ measurements. The system uses the capacitive method to determine the dielectric constant of the iron ore located between the sensor electrodes and, consequently, the moisture. This system has a measuring range of 0 to 14% on a dry basis and presents an uncertainty up to 0.07 percentage points for a 2-standard-deviation confidence level. In the validation process, the absolute error was less than 0.34 percentage point in the mining interest range of 6 to 14%. The founded results achieve a significant advance in the development of real-time equipment for measuring ore moisture since there is no device capable of doing it with the necessary level of accuracy and precision. For mining, this kind of system represents a big step to take corrective and preventive decisions around iron ore moisture control.pt_BR
dc.identifier.citationPINTO, E. S. et al. A novel two degrees of freedom system for measuring iron ore water content on a conveyor belt. IEEE Sensors Journal, v. 21, 2021. Disponível em: <https://ieeexplore.ieee.org/document/9419052>. Acesso em: 29 abr. 2022.pt_BR
dc.identifier.doihttps://doi.org/10.1109/JSEN.2021.3076428pt_BR
dc.identifier.issn1530-437X
dc.identifier.urihttp://www.repositorio.ufop.br/jspui/handle/123456789/15594
dc.identifier.uri2https://ieeexplore.ieee.org/document/9419052pt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.subjectComplex impedancept_BR
dc.subjectMoisturept_BR
dc.subjectReal-dual frequency methodpt_BR
dc.subjectRelative dielectric constantpt_BR
dc.titleA novel two degrees of freedom system for measuring iron ore water content on a conveyor belt.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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