This paper studies the influence of two pH modifiers, namely sodium hydroxide (NaOH) and sodium carbonate (Na2C03), on the flotation of celestite ore using sodium oleate as the collector and sodium silicate (Na2SiO 3) as the depressant. The use of Na2CO 3 provides the best results for the concentration of celestite, under the same experimental conditions. © 1998 Elsevier Science Ltd. All rights...

the qom formation, which hosts the mazraeh celestite deposit, contains dominantly limestones, marl and subordinate evaporites deposited in shallow marine environments. petrographic evidence indicates that the celestite deposits were formed by replacement of limestone. the presence of carbonate inclusions within celestite crystals as well as the pseudomorphic habits of some crystals suggests tha...

Detailed petrographic, geochemical and strontium isotope studies, combined with field observation and rnicrofacies investigations indicate that syngenetic celestite at the base of Asmari Formation at the Bangestan anticline, Behbahan region, was deposited directly from Tertiary seawater in an intrasupratidal to supratidal environment. During diagenesis, the precipitated celestite underwent ...

detailed petrographic, geochemical and strontium isotope studies, combined with field observation and rnicrofacies investigations indicate that syngenetic celestite at the base of asmari formation at the bangestan anticline, behbahan region, was deposited directly from tertiary seawater in an intrasupratidal to supratidal environment. during diagenesis, the precipitated celestite underwent seve...

Stable Strontium. Elemental strontium (atomic number 38) occurs naturally in the earth's mantle as a mixture of four stable isotopes, Sr, Sr, Sr, and Sr, and is present everywhere in very dilute concentrations. It is very similar to calcium in its environmental and physiological behavior. Strontium is generally found in molecular compounds with other elements. Commercially important strontium m...

-This paper studies several kinetic aspects of semi-batch flotation of celestite and calcite in a mechanical or subaeration cell with sodium oleate as the collector agent, using pure minerals ranging in size between 177 and 74 pm, respectively, with a constant pH = 9 in the flotation bath in all experiments. The results obtained indicate that both minerals float rapidly and that the flotation r...