Carbothermic Reduction of V<SUB>2</SUB>O<SUB>3</SUB> under Reduced Pressure

KINETICS OF CARBOTHERMIC REDUCTION OF AN IRANIAN CELESTITE ORE

Two commercial methods are used for the production of strontium carbonate:1) Direct conversion of Celsetite to strontium carbonate by hot sodium carbonate,2) Carbothermic reduction of celestite with coal followed by water leaching of strontium sulfide(SrS) and its conversion to strontium carbonate.The present study has been made on the carbothermic reduction of celestite ores of Varamin (Iran) ...

Microwaves Applied to Carbothermic Reduction of Iron Ore Pellets

Results of reducibility tests of reduction conducted on iron ore pellets with carbon are presented in this work. Work done is centered on reduction kinetics using carbon as reducing agent with conventional heat supply (heat transfer process) compared with reduction kinetics where heat is supplied by microwaves to the whole volume. Ore used in this work is called "Alzada" which has reducibility ...

Intraocular Pressure Reduction Is Associated with Reduced Venous Pulsation Pressure

PURPOSE To explore whether alterations in intraocular pressure (IOP) affect vein pulsation properties using ophthalmodynamometric measures of vein pulsation pressure. PATIENTS AND METHODS Glaucoma patients had two retinal vein pulsation pressure (VPP) measurements from upper and lower hemiveins performed by ophthalmodynamometry at least 3 months apart. All subjects had VPP and IOP recorded at...

Kinetic Study of Barite Carbothermic Reduction in Presence of Sodium Carbonate as Catalyst

The effect of mechanical activation on the carbothermic reduction kinetics of hematite-graphite mixture

The effect of mechanical activation on structural changes and kinetics of carbothermic reduction of hematite with graphite was studied in this research. Hematite powder mixture with graphite (with stoichiometry ratio C/O=1) was milled for the time periods of zero to 50 hours, and the structural changes were studied using X ray diffraction (XRD). The effect of mechanical activation on the kineti...