Molten iron pure spray particle magnesium desulfurization spray gun with vaporizing chamber in spearhead and preparation method of molten iron pure spray particle magnesium desulfurization spray gun

Abstract

The invention discloses a molten iron pure spray particle magnesium desulfurization spray gun with a vaporizing chamber in a spearhead. The molten iron pure spray particle magnesium desulfurization spray gun comprises a connecting flange, a gun-barrel and a spearhead blowing vaporizing chamber, which are sequentially connected and communicated with each other, wherein the spearhead blowing vaporizing chamber is sequentially composed of a vaporizing chamber bell jar, an anchoring part group and a refractory castable lining from inside to outside; a bottom skirt is arranged at the lower end of the vaporizing chamber bell jar; and a plurality of air outlets are evenly formed in the bottom skirt in an emission shape. The method comprises the following steps: selecting a metal material to process and fabricate each component of the spray gun and removing rust for later use according to structural parameters of the spray gun; sequentially preparing a gun core and the vaporizing chamber bell jar; connecting the gun core and the vaporizing chamber bell jar by welding; and welding a reinforcing rib plate in a gap among the lower end of the gun core, the top of the vaporizing chamber bell jar and the refractory castable lining; and finally welding the anchoring part group, and pouring to obtain the spray gun. Compared with a conventional vaporizing chamber spray gun, the molten iron pure spray particle magnesium desulfurization spray gun disclosed by the invention has the advantages of being simple in structure, stable to blow, low in cost, efficient in desulfurization, long in service life and the like.

Description

technical field [0001] The invention relates to the field of molten iron pretreatment, in particular to a molten iron pure spray granular magnesium desulfurization spray gun with a gasification chamber on the gun head and a preparation method thereof. Background technique [0002] There is a very high affinity between metallic magnesium and sulfur. During the desulfurization process of metallic magnesium, the desulfurization reaction of metallic magnesium is mainly completed by the homogeneous reaction of metallic magnesium and sulfur dissolved in molten iron, which is the strongest desulfurization of molten iron. One of the desulfurizers, it has the advantages of less consumption, slag amount, less iron loss and less environmental pollution. Because the existence of slag does not affect the homogeneous desulfurization reaction of magnesium, it is not sensitive to blast furnace slag in molten iron; because the amount of magnesium used for desulfurization is small, the invest...

AI Technical Summary

Problems solved by technology

However, judging from the structure of the patent, the 2 to 12 outlets on the side wall of the spray gun are easily blocked by the sticky slag on the inner wall of the gasification chamber, resulting in unstable exhaust at the side outlet, and at the same time causing problems for the cleaning of the sticky slag on the inner wall of the gasification chamber. Difficult, there is no report on actual production application

Therefore, the production stability of magnesium desulfurization by pure spraying of metal particles in the spray gun of the gasification chamber must be further studied

Images