The oxygen lances for electric arc furnace steelmaking can be divided into oxygen burning lance and blowing oxygen and burning carbon lance.
In the 2st part, the principles of converter gradient control, oxygen lance control, material loading control and dust exhaust control are described.
a water-cooled oxygen lance is lowered to within about a meter of the molten iron and high purity oxygen is blown on to the iron. The oxidation process begins. This oxidation produces heat, so no outside heat is needed.
Scholars have developed a theory to judge the slagging situation in the furnace by measuring the sound intensity of the furnace mouth. Around this theory, there are endless methods to control the oxygen lance.
According to analysis of jet characteristics and degree of slopping, the swirl-flow oxygen lance can satisfy the need of slag splashing for furnace protection and improve metallurgical results.
This paper describes the design and selection of important parameters of oxygen lance nozzle for 120 t converter, analyzes and discusses its applied results both in cold state test and production.
