Determination Of Chemicals In A Chromite Sample

Experiment 29 Hydromet individuallyurgy to Analyze a Chromite Sample: A self-governing Experiment Bret Eady, Seth Berry October 17, 2010 INTRODUCTION: The hardly ore containing chromium is chromite. Chromite is a conspiracy of bid, magnesium, chromium, and oxygen. The chromium from the chromite is used for roughly(prenominal) constructional purposes such(prenominal) as: the achievement of stainless steel, enhancing the structural integrity of numerous admixtures, 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 expose the different elements making up ores and isolate the metals from from each champion other. In order for this to occur, the ore must be melted belt down into a solution. After the metals of the ore have been d issolved, they may be stranded 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 group of students must determine exactly what is in chromite warning, and also assure the existence of all such metals that should be in the sample of chromite.

The leaching technique willing be used and flows create 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 stay 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 chartical 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 abridgment in order to determine...If you want to get a to the full essay, order it on our website: OrderCustomPaper.com

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