China Nonferrous Metallurgy

The smelting process of metallurgical furnace is accompanied by complex multiphase chemical reactions at high temperature, so it is difficult and costly to carry out experiments directly. Hydraulic model experiment and numerical simulation methods are widely applied by researchers to carry out the study. The side-blowing gas penetration distance and agitation conditions are the key indicators in the design of side blowing furnace and lance, which affect the design of side blowing furnace width and spray gun structure. In this paper, the impact of the lance immersion depth, lance height, bath liquid level, lance diameter and gas flow volume on the side-blowing gas penetration distance and bath agitation are studied by using hydraulic model experiment. The results show that: bath liquid level, lance height and the immersion depth of the lance have no or insignificant impact on the gas penetration distance; the side-blowing gas penetration distance is mainly related to the gas outlet velocity as the distance increases with the increase of gas flow and the decrease of lance diameter; the gas flow has a great impact on the flow and agitation of the bath in the furnace, reasonable lance structure, layout design and gas flow selection will facilitate the formation of sufficient flow field and agitation power field in the side blowing furnace.