Results 1 to 10 of about 56,332 (307)

Flotation behaviors of chalcopyrite and galena using ferrate (VI) as a depressant

open access: yesInternational Journal of Mining Science and Technology, 2023
This paper investigated the effects of potassium ferrate (PF) on the flotation performances of chalcopyrite and galena. The flotation results showed that PF obviously depressed galena, but had little effects on the floatability of chalcopyrite within pH ...
Yongxing Zheng   +5 more
doaj   +2 more sources

Trace elements geochemistry of galena in fluorite deposits from central Alborz, Mazandaran Province

open access: greenJournal of Economic Geology, 2020
Introduction Trace elements including As, Sb, Bi, Ga, Ge, In, Hg, Cd, Tl, Se and REEs have special applications in various industries due to their physical and chemical properties.
Mahtab Hamzeh   +2 more
doaj   +2 more sources

Effect of hydrogen peroxide on flotation behavior and mechanism of galena with different pre-adsorbed collectors

open access: goldResults in Engineering
This study investigates the oxidation rate of galena when different collectors are pre-adsorbed onto its surface under the action of hydrogen peroxide (H2O2).
Xusheng Yang   +3 more
doaj   +2 more sources

Effect of the pulp potential on galena flotation with amyl xanthate as the collector [PDF]

open access: yesREM: International Engineering Journal, 2023
The flotation mechanism of galena with xanthate as the collector is generally explained based on the mixed potential of the pulp, in which an anodic electron transfer reaction from the collector to the mineral is combined with an O2 cathodic reduction ...
Karine Fernandes Rodrigues   +6 more
doaj   +1 more source

Mineralogical characterization of the traditional geopharmaceutical ithmid by XRF and XRD [PDF]

open access: yesTrends in Pharmaceutical Sciences, 2021
Geopharmaceuticals, specifically minerals were used to treat various diseases from antiquity. Ithmid or kohl stone is one of the most-applied geopharmaceuticals in the Middle East, Africa, and South Asia.
Marzieh Rashedinia   +2 more
doaj   +1 more source

Study of Health Dimensions

open access: yesПедагогически форум, 2022
Good health is determined by achieving a balance in the interrelated dimensions of health. The goal of this article is to study the physical, social, emotional, intellectual, spiritual and environmental health of students from the Faculty of Education ...
Galena Terzieva
doaj   +1 more source

Development of Professional-Pedagogical Competence in the Field of Hygiene and Health Education

open access: yesПедагогически форум, 2022
The development of knowledge and skills in hygiene and healthy living is most efficiently carried out during the primary school age. The necessity of teaching science-based and systematized information comes to the fore, in order to lay the foundation of
Galena Terzieva
doaj   +1 more source

Depression behaviors of N-thiourea-maleamic acid and its adsorption mechanism on galena in Mo-Pb flotation separation

open access: yesInternational Journal of Mining Science and Technology, 2022
In present study, a novel organic depressant N-thiourea-maleamic acid (TMA) was synthesized and applied as a galena depressant in the flotation separation of Mo-Pb ores. The depression behaviors of TMA were tested through flotation experiments.
Liang Lu   +4 more
doaj   +1 more source

Attitudes of Preschool and Primary School Teachers for Inclusion of Children with Special Educational Needs in Motor Education

open access: yesПедагогически форум, 2020
The purpose of this article is to explore the attitudes of preschool and primary school teachers in the inclusive education of children with special educational needs in physical education.
Galena Terzieva
doaj   +1 more source

Zn-Pb-Cu sulfide-bearing glacial sandstone erratics near Raahe on the western coast of Finland: Indicators of Paleozoic base metal mineralization at the bottom of the Bothnian Bay [PDF]

open access: yesBulletin of the Geological Society of Finland, 2019
Over the past tens of years, glacial sandstone erratics variably enriched in Zn, Pb and Cu have been collected from the coast south of Raahe, but their source has remained ambiguous.
Eero Hanski   +7 more
doaj   +1 more source

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