Extractions of Tin Metal from Electronic Circuit Scrap by Wet Techniques


According to the larger accumulation of electronic equipment, then newenvironmental techniques (wet extraction process) are studied to treat thesescrap and produced a utilized metal such as tin metals that used in differentindustrial processes.Different experimental are carried out in this studied in order to optimize theproduction of Tin metal from scrap circuits (stannous chloride) such astemperature of reaction (30, 35, 45, 55, 60 c°) concentration of scrapintroduced (5.0, 7.0, 10.0, 13.0, 15% wt.) and residence time through smeltingstep as (2.0, 2.5, 3.5, 4.5, 5.0 hrs) respectively.A characterization and monitoring for production metals occurred by the use ofx-ray scanning electron microscope to scan the internal structure of Tin metal,also an atomic absorption to determine the concentrations of Tin agglomerates.The results show that; optimum conditions that produced high percent ofTin metal from stannous chloride are (53°c temperature of residence, 8.5 wt%concentration of and 4.7 hrs residence time for reduction step at 2°c/minrating ratio). Afterward for smelting stage are (388°c curing temperature and 5hrs residence time).Also the characteristic results proved that; agglomerate of Tin metalproducts appeared at these optimum conditions at x-ray and atomic absorptionas 0.25 wt. % for standard blank metal as Cu and clear agglomerate of Tinmetal in the electron microscope.