Experiment 29 Hydromet all(prenominal)urgy to Analyze a Chromite Sample: A self-governing Experiment Bret Eady, Seth Berry October 17, 2010 INTRODUCTION: The precisely ore containing chromium is chromite. Chromite is a conspiracy of bid, magnesium, chromium, and oxygen. The chromium from the chromite is used for both(prenominal)(prenominal) constructional purposes much(prenominal)(prenominal) as: the achievement of spotless steel, enhancing the structural integrity of many alloys, and reducing the station at which they corrode. Sometimes the composition of chromite may vary and the branding exhort in chromite may be replaced by magnesium. Also, the chromium in chromite may sometimes be replaced by aluminum and ferrous ions. Hydrometallurgy is a way to divert the different elements making up ores and isolate the metals from from each unrivalled other. In order for this to occur, the ore must(prenominal) be melted cut into a solution. After the metals of the ore hand been dissolved, they may be separated from each other by many different processes, some of the most popular argon leaching and precipitating the metal from the solution via electrolysis or chemical means. In this experiment the squad of students must determine scarce what is in chromite test, and also hold the existence of all such metals that should be in the sample of chromite.
The leaching technique forget be used and precipitates form via the addition of NaOH to the leach solution. The slip of iron via zinc leave aloneing also be utilized. As each metal precipitate forms in the solution, it volition befool to be separated from the remain solution and the process repeated until all precipitates have been created and isolated. Next, each individual precipitate will be dissolved into an sedimentary solution and ran through a spectrometer. The interpretical record that the spectrometer gives of the un cognise precipitate will be compared to the known graph of these metals. The wavelength maxes will be set(p) for each of the unknowns via religious outline in order to determine...If you inadequacy to get a honorable essay, order it on our website: Ordercustompaper.com
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