Molten iron desulfurizing and demagging agent spraying gun

Abstract

The present invention relates to ferrous metallurgy technology, and is especially one kind of desulfurizing magnesium preparation spraying gun for treating molten iron in iron ladle. The spraying gun includes one gun body, one skeleton, one refractory lining outside the skeleton, one passage matched to the skeleton and with detachable bent outlet, one end nozzle of refractory material with high heat strength and screwed to the passage, and one refractory casing outside the nozzle. The present invention can ensure the stable addition of desulfurizing magnesium grain into molten iron to result in high desulfurizing effect.

Description

technical field [0001] The invention belongs to the category of ferrous metallurgy, and in particular relates to a molten iron desulfurization magnesium agent spray gun for treating molten iron outside a furnace in a ladle. Background technique [0002] The known spray gun device that magnesium is used for the desulfurization of molten iron is either provided with a vaporization chamber at the outlet of the submerged spray gun passage, or although there is no vaporization chamber, magnesium powder must be mixed with passivating additives (lime, carbonization, etc.) calcium, dolomite, etc.) The above-mentioned known devices have their inherent disadvantages, such as high material consumption, low utilization rate of desulfurization agent, complex and bulky spray guns and mechanical equipment, etc., which will inevitably lead to complicated process and high desulfurization cost. These shortcomings often lead to the inability to carry out desulfurization outside the furnace sm...

AI Technical Summary

Problems solved by technology

[0004] However, when using a spray gun without a vaporization chamber, if the outlet pipeline of the inner channel is vertical, and the introduction depth of the grain-shaped magnesium material is large (above 2m), channel blockage often occurs

This is due to the impact force generated by the bubbling of molten iron around the outlet of the channel, which makes the area around the outlet of the channel slapped by molten iron, which in turn causes the channel to be blocked by iron and magnesium.

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