Experimental and numerical study on tapping of two liquids through a single tap-hole

Overview

This paper presents an experimental and numerical investigation of the tapping of two immiscible liquids through a single tap-hole. The study focuses on the flow behaviour, phase interaction and discharge characteristics relevant to metallurgical tapping operations.

The work combines laboratory experiments with numerical simulations to improve understanding of multiphase flow during tapping processes.

Abstract

The production of industrial metals in pyrometallurgical smelting furnaces is central to modern industry. Tapping of metal and slag from smelting furnaces is a complex and difficult process. Any variations from tap to tap reduce predictability and impact the planning of downstream logistics. Tapping of metal and slag can be generalized as drainage of two immiscible liquids through a particle bed. In the present paper this is studied by both laboratory experiments and numerical modeling of water and oil drainage from a tank. The results show that the numerical model and physical experiment are consistent. This provides confidence that the numerical models can be applied to quantify tapping from metallurgical furnaces.

What This Paper Covers

• Experimental investigation of two-liquid tapping
• Numerical modelling of multiphase flow through tap-holes
• Phase interaction and flow regimes
• Comparison between experimental and numerical results
• Applications to metallurgical tapping processes