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Stripping chrome in an electrolytic bath

Aug 21, 2008· Chrome can be removed in a caustic soda and water solution, at 140 degrees F, at 10 12vdc. Figure on a 100 amp power supply for a wheel. 10 minutes should remove the chrome. The downside is you have now contaminated a good electrocleaner tank with hexavalent chrome. It will turn the tank seaweed green.

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Another advantage that electrolysis has over brushing, grinding, or other conventional rust removal methods, is that none of the original iron or steel gets removed, and the process is usually not caustic or noisy, besidesparatively inexpensive. Advantages of Rust Removal Using Electrolysis. This process requires the least manual labor.

Electrolysis Chemistry for Majors

Electrolysis is the basis for certain ore refining processes, the industrial production of manymodities, and the electroplating of metal coatings on various products. Measurement of the current flow during electrolysis permits stoichiometric calculations. Key Equations Q =

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Figure 3 3 shows the desired reactions during electrolysis these reactions are listed below. At the cathode: Cr +3 + 1e Cr +2. Cr +2 + 2e Cr 0. 2H + + 2e H 2. At the anode: 2H 2 O 4H + + O 2 + 4e . 2Cr +3 + 7H 2 O Cr 2 O 7 2 + 14H + + 6e

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Electrolytic Analysis

Oct 23, 2016· Weigh out 1 gm. of the finely powdered and sampled ore. Transfer to a 250 c.c. beaker. Moisten with a little cold water. Add 25 c.cs. 16E. HNO3 and 10 to 15 drops 36E. H2SO4. Cover with a clock glass and heat on the hot plate till all the ore is in solution and the nitrous fumes have disappeared.