Tapping

Tapping in metallurgy is the act of extracting molten metal from a furnace or container. Specifically, it refers to the process of draining or pouring molten metal (often alloys) from a furnace or container. The purpose of tapping is to collect the melted and refined metal, preparing it for subsequent processes such as casting, rolling, or other forms of processing.

How Does The Tapping Process Work?

The tapping process begins by opening the taphole, a specially designed small opening located at the bottom of the furnace or vessel containing molten metal. The taphole is typically sealed with a refractory material until ready for tapping. When the tapping hole is opened, the internal pressure of the furnace forces the molten metal to flow out under gravity. 

What is Special about Tapping in Metal Production?

• High temperatures: Metals are typically melted at extremely high temperatures, requiring tapping equipment and processes to withstand harsh thermal conditions.
• Chemical properties: Each metal possesses distinct chemical properties, necessitating specific safety and protective measures during the tapping process.
• Purity requirements: The metal obtained after tapping often needs to meet stringent purity standards, demanding precise control over the tapping process.