Foeskes - 22-9-2017 at 17:51
I recently made chromium from thermite.
The recipe I used was 20 grams Cr2O3:12 grams K2Cr2O7:11.4 grams Aluminium powder.
The mixture was ignited using some magnesium ribbon and a mixture of aluminium and sulfur.
After breaking the slag I got around 12 grams of chromium(~67% yield based on Cr2O3 and K2Cr2O7) although it likely contains Al contamination like
most thermite reactions.
(The remaining slag and the thermite container was put in a ascorbic acid solution to destroy any Cr(VI) )
[Edited on 23-9-2017 by Foeskes]
[Edited on 23-9-2017 by Foeskes]
[Edited on 23-9-2017 by Foeskes]
j_sum1 - 22-9-2017 at 18:02
Rather nice.
I would love to see a cut or ground surface to see if you get the characteristic shiny that Cr exhibits.
Foeskes - 22-9-2017 at 18:54
When breaking the slag the were small beads of chromium and after breaking one, it was pretty shiny. It looks kinda similar to the attached image, but
smaller.
[Edited on 23-9-2017 by Foeskes]
