Determination Of Chemicals In A Chromite Sample

Experiment 29

Hydromet eachurgy to Analyze a Chromite Sample: A self-governing

Experiment

Bret Eady, Seth Berry

October 17, 2010

INTRODUCTION:
The only ore containing chromium is chromite. Chromite is a conspiracy of bid, magnesium, chromium, and oxygen. The chromium from the chromite is used for some(prenominal) constructional purposes such as: the achievement of stainless steel, enhancing the structural integrity of many metals, and reducing the station at which they corrode. Sometimes the composition of chromite whitethorn vary and the branding iron 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 separate the different elements making up ores and isolate the metals from from each one other. In order for this to occur, the ore must be melted down into a solution. After the metals of the ore have been dissolved, they may be separated from each other by many different processes, some of the most popular are leaching and precipitating the metal from the solution via electrolysis or chemical means.
In this experiment the team of students must determine exactly what is in chromite sample, and also confirm the existence of all such metals that should be in the sample of chromite.



The leaching technique will be used and precipitates formed via the addition of NaOH to the leach solution. The displacement of iron via zinc will also be utilized. As each metal precipitate forms in the solution, it will have to be separated from the remaining solution and the process repeated until all precipitates have been created and isolated.
Next, each individual precipitate will be dissolved into an aqueous solution and ran through a spectrometer. The graphical 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 determined for each of the unknowns via religious analysis in order to determine...If you want to get a full essay, order it on our website: Ordercustompaper.com



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