1 / 10

Zn and Pb

Zn and Pb. Zn and Pb. Zn and Pb. Zn and Pb. Al & Mg.

scout
Télécharger la présentation

Zn and Pb

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Zn and Pb

  2. Zn and Pb

  3. Zn and Pb

  4. Zn and Pb

  5. Al & Mg a) Carbon anode; b) Electrolyte; c)Insulation; d) Carbon lining; e) Current collector bar; f) Thermal insulation; g) Steel shell; h) Carbon block; i) Ledge; j) Crust; k) Alumina cover; l) Removable covers; m) Anode rods; n) Fume collection; o) Air cylinder; p) Feeder; q) Current supply; r) Crust breaker

  6. Al …………b.v 1950oC Al2O3………b.t. 2050oC Na3AlF6….. b.t. 1010oC Composition of electrolyte: 5-10% Al2O3 cryolit, AlF3, CaF2,,,LiF – 970 oC 2,1 g/cm3 (Al 2,7 g/cm3 ) Dissociation: Al2O3→ Al 3+ + AlO33- Cathode: Al 3+ + 3 e → Al (l) Anode: 2 AlO33- - 6 e → Al2O3 + 1,5 O2 1,5 O2 + C → 3 CO (CO2) 4F- + C - 4 e → CF4

  7. Al & Mg

  8. Cu

  9. Ni

More Related