6 research outputs found

    Impeller Radial Velocity and Air Flow Rate Influence on Copper Rougher Flotation Recovery

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    A rougher flotation study has been done to analyze the effects of copper feed mineralogy, air flow rate and impeller radial velocity on metallurgical performance. During the performance testing the trials were exposed to metallurgical examining and computerised mineral analysis to establish a size-by-size mineralogy. The mineralogical and metallurgical information was compared to the material balance for rougher flotation results. These samples showed that copper recovery optimization should focus on the losses of liberated Cu-minerals and how they are associated with fine particles. The result of variable impeller radial velocity for each flotation cell cascade on metallurgical performance has been explored on a known-sized and an unknown-sized base, to gauge the input from the fine particles. An industrial application is discussed in this paper, and it validates that divergence of the impeller radial velocity and air flow has positive influence on the recovery.W pracy przeprowadzono analizę wpływu składu mineralogicznego nadawy kierowanej do procesu flotacji głównej, wielkości przepływu dozowanego powietrza i prędkości obrotowej wirników na wyniki flotacji miedzi. Produkty procesu zostały poddane analizom chemicznym oraz mineralogicznym z wykorzystaniem systemu MLA. Przeprowadzone analizy wykazały, ze optymalizacja uzysku miedzi flotacji głównej w warunkach przemysłowych, limitowana jest obecnością w nadawie uwolnionych minerałów miedzi w skrajnych klasach ziarnowych. W artykule przedstawiono wyniki eksperymentów realizowanych w warunkach przemysłowych i pozytywny wpływ modyfikacji prędkości obrotowej wirników oraz stopnia napowietrzenia zawiesiny flotacyjnej na uzysk miedzi

    MEASUREMENT OF THE MASS AND WIDTH OF THE Z0 PARTICLE FROM MULTI - HADRONIC FINAL STATES PRODUCED IN e+ e- ANNIHILATIONS

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    First measurements of the mass and width of the Z0 performed at the newly commissioned LEP Collider by the DELPHI Collaboration are presented. The measuements are derived from the study of multihadronic final states produced in e+e- annihilations at several energies around the Z0 mass. The values found for the mass and width are M(Z0)=91.06±0.09 (stat) ±0.045 (syst.) GeV and Γ(Z0)=2.42±0.21 (stat.) GeV respectively, froma three-parameter fit to the line shape. A two-parameter fit in the framework of the standard model yields for the number of light neutrino species Nν=2.4±0.4 (stat.) ±0.5 (syst.)0SCOPUS: ar.jinfo:eu-repo/semantics/publishe

    Measurement of the mass and width of the Z0-particle from multihadronic final states produced in e+e- annihilations

    No full text

    MEASUREMENT OF THE MASS AND WIDTH OF THE Z0-PARTICLE FROM MULTIHADRONIC FINAL-STATES PRODUCED IN E+E- ANNIHILATIONS

    No full text

    MEASUREMENT OF THE MASS AND WIDTH OF THE Z0-PARTICLE FROM MULTIHADRONIC FINAL-STATES PRODUCED IN E+E- ANNIHILATIONS

    No full text
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