Slag droplet

Figure 27 Schematic drawings illustrating (a) metal flow in the mould, (b) entrainment of slag droplets in the metal flow and (c) location of surface inclusions in the slab.

Figure 50 Variation in Slag droplet geometry as a function of Electric Potential after 2 minutes at (a) 0 v, (b) -1 v (c) -2 v [71],...

The radiant cooler is located directly below the gasifier and is a massive single device (Polk radiant cooler 650 t, 45 m height, 5.25 m diameter [6]). The hot gas must be cooled and prevented from direct flow against the wall, to inhibit the deposition of sticky slag droplets. Because the liquid slag from the wall of the... 

Asai [15] developed an inviscid theory for the generation of a slag droplet at the interface between molten slag and metal in the absence of bubbles based on the energy equation. The reported diameter, dpc, is given by... 

Normally ca 50% of the coal ash is removed from the bottom of the gasifier as a quenched slag. The balance is carried overhead in the gas as droplets which are solidified when the gas is cooled with a water spray. A fluxing agent is added, if required, to the coal to lower the ash fusion temperature and increase the molten slag viscosity. 

The reacting particles melt rapidly, and the droplets fall to the slag layer. The sulfide drops settle through it to form the matte phase. Any oxidi2ed copper is reduced to the matte by the following reaction ... 

Intennediary formation of FeO in the hot spot is the main oxygen source for the decarburisation. FeO is dispersed in the slag and the metal bath as well as Fe-C droplets, which are accelerated hy the oxygen jet. The subsequent reaction of FeO with carbon dissolved in iron occurs in both phases. In the slag phase, dissolved FeO reacts with dispersed Fe-C droplets, and in the metal bath FeO droplets form the disperse phase. For the decarburisation, several reaction routes can be formulated ... 

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