Dr. Seyed Hamid Hosseini's papers
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The Angooran Lead & Zinc Mine located in Zanjan province-Iran is the greatest one of its kind in Middle East. At present, a part of ore body located within host rock mineralized schist is not planned for milling project design. In the present study, the mineral processing possibility of mineralized schist deposit within Angooran Lead & Zinc Ore deposit was investigated. The ore microscopy studies were carried out to determine the mineral content of the ore deposit. The natural breakage and grind
The Angooran Lead & Zinc Mine located in Zanjan province, Iran is one of the largest ones of its kind in the Middle East. At present, a part of the ore body located within host rock mineralised schist is not included in the milling design. According to previous work, wet chemical assay, XRF, XRD and ore microscopy studies of the ore samples show that the ore contains Smithsonite (16%), Mimetite (0.6%), Quartz (52%), Sericite (16.5%), Kaolinite (12%), Iron Oxides Minerals (1.5%), Rutile (0.4%) an
In this study, using pure smithsonite,
associated minerals and ore samples, DDA,
KAX, Oleic acid and mixed (DDA and KAX)
collectors for the separation of smithsonite are
assessed through batch flotation to define an
optimal flotation condition and apply to a
natural ore. Furthermore, the reagents are
tested in bench scale flotation tests for the
separation of smithsonite in Iranian Angooran
oxidised zinc ore from other gangue minerals.
The artificial mixture flotation tests showed
tha
The adsorption of cationic and anionic collectors on the surface of smithsonite was
studied using diffuse reflectance FTIR (DRIFT) and X-ray photoelectron spectroscopy
(XPS or ESCA) techniques.
The FT-IR spectra studies of smithsonite conditioned using DDA (dodecylamine)
show the presence of RNH2 on the surface of smithsonite and accordingly the adsorption
of DDA. XPS results show the presence of a ZnS layer on the surface after sulphidising in
amine adsorption. The appearance of the N (1s
In this study, the flotation behaviour and surface adsorption of smithsonite were investigated using various concentration ratios of
potassium amyl xanthate (KAX) and dodecylamine (DDA) in a surfactant mixture. The use of either KAX or DDA during flotation
resulted in an increase in smithsonite recovery as the collector concentration increased. Further, the smithsonite recoveries were for
the most part less than 40% irrespective of collector concentration. However, when a mixture of KAX and D
The influence of potassium amyl xanthate (KAX) and hexylmercaptan (HM) adsorption on
smithsonite surface at various concentrations were investigated through using zeta potential,
contact angle, microflotation and diffuse reflectance FTIR studies at different pH. The zeta potential
measurements of KAX showed that the adsorption of ionic charge (more negative charge after KAX
treatment) takes place on the surface of pure crystalline smithsonite. The charges vary between238
and 245 mV at pH 10
In the present study, the mineral processing possibility of Sorkh-cheshmeh ore in the north of Khorasan province, Iran was investigated. These studies were carried out based on the dissolution and settling velocity of red mud. The results show that the using of this deposit separately is not applicable, because of low dissolution and/or low settling velocity of red mud. The other parameters such as dissolution temperature, the amount of lime and Na2Oc must be carefully controlled to have the bet
