Electromagnetic induction desulfurizing molten iron jar

Abstract

The invention relates to an electromagnetic induction desulfurizing molten iron jar. The electromagnetic induction desulfurizing molten iron jar comprises a guide rail (1), a trolley (2) and a molten iron jar (4); an electromagnetic induction stirring device (3) is arranged on the outer side wall of the molten iron jar (4) and comprises a shielding housing (7) and at least two groups of iron cores (5); any one of the groups of iron cores (5) is coiled by a coil (6); and the at least two groups of iron cores (5) and the coil (6) coiled on the iron cores (5) are covered by the shielding housing (7). By adopting the molten iron jar, the desulfurizing efficiency can be effectively improved, so that the processes of a blast furnace and a converter can be joined more compact; in addition, the electromagnetic induction desulfurizing molten iron jar is simple in construction, convenient in operation, long in service life, and low in cost.

Description

technical field [0001] The invention relates to the technical field of iron and steel metallurgy, in particular, the invention relates to an electromagnetic induction desulfurization hot metal tank. Background technique [0002] In recent years, my country's automobile, shipbuilding, container, petrochemical, electrical and other industries have a strong demand for high-quality steel. Users have higher and higher requirements for ultra-low sulfur and low phosphorus steel, such as: ship plate steel, oil well pipe steel: [S], [P]<0.005%, pipeline steel, Z-direction steel, IF steel: [S] <0.002~0.004%, etc. In order to obtain low-sulfur molten iron, the blast furnace must increase the basicity of slag and the furnace temperature, which will reduce the technical and economic indicators of the blast furnace. Due to the restriction of the thermodynamic conditions of the smelting process in the converter, the desulfurization rate is only about 40%. Therefore, in order to en...

AI Technical Summary

Problems solved by technology

If deep desulfurization is required for steel grades, the processing time will be longer. If three tanks of hot metal need deep desulfurization at the same time, because the injection position needs to be replaced, it will cause the hot metal tanks to stay in the hot metal pretreatment station for more than 1 Hours, the efficiency is low, more often because of the tight supply of molten iron in the converter, the desulfurization station only takes about 8 minutes to send the molten iron to the converter, and there is no time for desulfurization at all

At present, many have not added pre-desiliconization and pre-dephosphorization functions, and low efficiency is the bottleneck of molten iron pretreatment technology.

Images