The roasting of sulfide ores and concentrates is one the most important steps in pyrometallurgical metal production from primary raw materials, due to necessity excess sulfur removal, present virgin material. Pentlandite main sources for nickel production. knowledge its reaction mechanism, products distribution during oxidation kinetics optimizing process. Raw pentlandite-bearing ore Levack min...

Despite the interest in rare-earth nickelates for applications, their processing under 1 bar of oxygen pressure is still challenging. In this work, we report co-precipitation synthesis, thermal stability and thermally driven decomposition NdNiO3 phase, order to determine synthesis parameters towards a pure perovskite phase. We concluded that using 1% molar excess Nd during preparation posterior...

composite solid propellants were prepared with and without nano-alloys (ti-co, ti-ni, ti-zn), where nano-alloys used as catalyst. these nano-alloys are prepared by hydrazine reduction method. catalytic properties of these nanomaterials were measured on ammonium perchorate/hydroxyterminatedpolybutadiene propellant by thermogravimetery analysis and differential thermal analysis. both experimental...

The kinetics of mercury removal from solid wastes generated by chlor-alkali plants were studied. The reaction order and model-free method with an isoconversional approach were used to estimate the kinetic parameters and reaction mechanism that apply to the thermal decomposition of hazardous mercury wastes. As a first approach to the understanding of thermal decomposition for this type of system...

a new nano-sized cobalt(ii) coordination polymer, (col1).0.5dmf.1.5ch3oh(1); [h2l1 = 5-(4-carboxy phenyl azo) salicyilic acid] has been synthesized by a sonochemical method. the thermal stability of compound 1 was studied by thermo- gravimetric and differential thermal analyses. nano-structure of this coordination polymer was characterized by elemental analyses, ir spectroscopy,  powder x-ray d...