Some of the uses of Nitric Acid for industrial needs:
1. used in the process of refining metals for example gold, platinum, and silver
2. HNO3 is used in the design process of goods made of copper, bronze and brass.
3. When mixed between concentrated hydrochloric acid and concentrated nitric acid, in a ratio of 3: 1, it is commonly used as a solvent for precious metals, namely gold and platinum. This mixture is commonly called Aqua Regia or king water.
4. HNO3 is also used to remove or clean process equipment from calcium and magnesium scale stuck in it