Nanoscale miniaturization of chalcogenide semiconductors such as lead sulfide (galena) can generate interesting quantum confinement effects in the field optoelectronic applications. In this work, we developed a process order to obtain SiO2 nanospheres coated with Galena, denominated core–shell system; is based on Stöber’s method, where magnetic stirring was replaced by an ultrasonic bath achiev...

The study of the depression effect non-toxic depressants on flotation separation chalcopyrite from galena is great importance for both industrial applications and theoretical research. mixed depressant (DFinal) four common inhibitors—sodium carboxymethyl cellulose, sodium silicate, sulfite, zinc sulfate—exhibited high selectivity during galena. Flotation tests an copper–lead bulk concentrate sh...

Metallurgical remains such as crucible, mould, slag and tuyere are generated in the production of bronze. The analysis particular can be used to identify raw materials, processes environments (temperature condition) employed bronze fabrication . Gwanbuk-ri site Buyeo is known location a royal palace during Baekje period, 6-7th centuries, crucible fragments slags make were excavated there. purpo...

background: biological shielding of nuclear reactors has always been a great concern and decreasing the complexity and expense of these installations is of great interest. in this study, we used datolite and galena (daga) minerals for production of a high performance heavy concrete. materials and methods: datolite and galena minerals which can be found in many parts of iran were used in the con...

Sulfide mineral dissolution is an important reaction controlling geochemical and environmental chemical processes in aqueous environments. In this study, we quantitatively evaluated the kinetic influence of galvanic interactions between different sulfide minerals on their seawater. Four hydrothermal sulfides with amounts Fe disulfide (pyrite) were reacted artificial seawater for 144 h, rates Zn...