Extractions of tin metal from electronic circuit scrap by wet techniques

الملخص EN

According to the larger accumulation of electronic equipment, then new environmental techniques (wet extraction process) are studied to treat these scrap and produced a utilized metal such as tin metals that used in different industrial processes.

Different experimental are carried out in this studied in order to optimize the production of Tin metal from scrap circuits (stannous chloride) such as temperature of reaction (30, 35, 45, 55, 60 c°) concentration of scrap introduced (5.0, 7.0, 10.0, 13.0, 15 % wt.) and residence time through smelting step as (2.0, 2.5, 3.5, 4.5, 5.0 hrs) respectively.

A characterization and monitoring for production metals occurred by the use of x-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 of Tin 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 / min rating ratio).

Afterward for smelting stage are (388°c curing temperature and 5 hrs residence times).

Also the characteristic results proved that ; agglomerate of Tin metal products appeared at these optimum conditions at x-ray and atomic absorption as 0.25 wt.

% for standard blank metal as Cu and clear agglomerate of Tin metal in the electron microscope.