What is the difference between pyrometallurgy and hydrometallurgy?

Hydrometallurgy and pyrometallurgy are two main branches in industrial chemistry. The key difference between hydrometallurgy and pyrometallurgy is that in hydrometallurgy, we use an aqueous solution to extract metals from the ore, whereas in pyrometallurgy, we use high temperatures to extract metals from the ore.

What is hydrometallurgy and pyrometallurgy?

Hydrometallurgy uses aqueous solutions to extract metals from ores (leaching). Pyrometallurgy involves high temperature processes where chemical reactions take place. Electrometallurgy involves metallurgical processes that take place in some form of electrolytic cell.

Can zinc be extracted by pyrometallurgy?

Pyrometallurgy in the Extraction of Zinc There are two methods of smelting zinc: the pyrometallurgical process and the electrolysis process; both methods are still used.

Which metal is extracted by hydrometallurgy as well as pyrometallurgy?

Cobalt and Nickel Production Primary nickel and cobalt are extracted from two different types of ores: sulfide ores and oxide ores. The extraction methods are typically based on pyrometallurgy, hydrometallurgy, and electrometallurgy principles that yield different products bearing nickel and cobalt.

Which is the correct process for zinc hydrometallurgy?

Zinc Leaching and Purification. Typical process of zinc hydrometallurgy consists of zinc concentrate roasting, calcine leaching, electro-winning, ingot casting and acid-making. Zinc leaching is performed in diluted sulfuric acid systemor ammonium system.

What’s the difference between hydrometallurgy and pyrometallurgy?

Hydrometallurgy and pyrometallurgy are two main branches in industrial chemistry. Both these processes are important in extracting metals from their naturally occurring metal ores. Therefore, these techniques are also called extractive metallurgical processes. 1. Overview and Key Difference

What kind of ore is pyrometallurgical process suitable for?

The pyrometallurgical process is suitable for iron ore, chromite, lead, zinc, copper, tin, and tungsten. Pyrometallurgy follows one or more of the following processes. Calcination is the thermal decomposition of a sulfide/carbonate ore.

Why is smelting of zinc more difficult than other metals?

Zinc smelting is the process of converting zinc ores into pure zinc. Zinc smelting has historically been more difficult than the smelting of other metals, e.g. iron, because in contrast, zinc has a low boiling point.