Process for preventing corrosion and the weakening of the 1996, 2002, tantalum, ensuring the inside of the hot concentrated sulfuric acid.

摘要

The invention has for its object a process for preventing corrosion and the weakening of the 1996 of the equipment made of tantalum for handling the inside of the sulfuric acid concentrated at a temperature of 200c or more. / p & & p & is incorporated in the hot concentrated sulphuric acid at least one oxidizing agent chosen from the nitric acid, nitric acid in the vaporized and the ferric ions, cupric, plombiques and stannic. / p & & p & decomposition of the sludge radioactive sulphuric acid.