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Desulfurization spraying gun

A desulfurization spray gun and spray gun technology, applied in the field of rotary multi-stage magnesium spraying desulfurization spray gun, can solve the problems of low utilization rate of magnesium and achieve the effects of improving utilization rate, improving dynamic conditions, and improving dynamic conditions

Active Publication Date: 2017-07-28
SHANDONG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of low magnesium utilization and desulfurization kinetics in the prior art, the present invention provides a rotary multi-stage magnesium-spraying desulfurization spray gun

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 , figure 2 , image 3 As shown in the rotary multi-stage magnesium spraying desulfurization gun, the gun body 6 of the rotary multi-stage magnesium spraying desulfurization gun is connected to the nitrogen gas storage source 1 and the passivated magnesium storage tank 2 through the blowing hose 3, and the spray gun body 6 is connected to the The blowing hose 3 is connected through the sealed bearing 4, and the spray gun body 6 is also connected with the transmission mechanism 5. During the magnesium spray desulfurization process, the transmission mechanism 5 drives the rotary multi-stage magnesium spray desulfurization gun to perform spin motion.

[0035] The outer diameter of the magnesium-spraying desulfurization gun is 350 mm, the inner diameter of the injection channel 11 inside the magnesium-spraying desulfurization gun is 15 mm, the nozzle at the bottom of the magnesium-spraying desulfurization gun is the main nozzle 10, which is in the shape of...

Embodiment 2

[0040] processed as figure 1 , figure 2 , image 3 As shown in the rotary multi-stage magnesium spraying desulfurization gun, the gun body 6 of the rotary multi-stage magnesium spraying desulfurization gun is connected to the nitrogen gas storage source 1 and the passivated magnesium storage tank 2 through the blowing hose 3, and the spray gun body 6 is connected to the The blowing hose 3 is connected through the sealed bearing 4, and the spray gun body 6 is also connected with the transmission mechanism 5. During the magnesium spray desulfurization process, the transmission mechanism 5 drives the rotary multi-stage magnesium spray desulfurization gun to perform spin motion.

[0041] The outer diameter of the magnesium-spraying desulfurization gun is 400mm, the inner diameter of the injection channel 11 inside the magnesium-spraying desulfurization gun is 20mm, the nozzle at the bottom of the spray gun is the main nozzle 10, which is in the shape of a trumpet, and except for...

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Abstract

The invention discloses a desulfurization spraying gun. The desulfurization spraying gun comprises a gun body; a primary spraying head and a plurality of secondary spraying heads are arranged on the gun body; the primary spraying head is arranged at the bottommost part of the gun body; the secondary spraying heads are arranged at the lower middle part of the gun body in a scattered manner; a blowing-spraying channel is formed in the gun body; and the primary spraying head and the secondary spraying heads are connected with the blowing-spraying channel. The desulfurization spraying gun can increase the magnesium utilization rate and improve the desulphurization efficiency.

Description

technical field [0001] The invention belongs to the field of molten iron pretreatment in iron and steel metallurgy technology, and in particular relates to a rotary multistage magnesium-spraying desulfurization spray gun. Background technique [0002] At present, the desulfurization of molten iron by spraying passivated magnesium particles has become a mainstream desulfurization process in domestic steel mills. After the passivated magnesium particles are sprayed into molten steel, magnesium reacts with sulfur to obtain magnesium sulfide: Mg+ S→MgS, MgS floats up into the slag layer, and MgS is removed in the subsequent slag removal operation to complete the desulfurization operation. [0003] However, since the melting point of magnesium is 648°C, the boiling point is 1107°C, and the temperature of molten iron is generally above 1250°C, magnesium will be gasified after being sprayed into molten iron and become magnesium steam bubbles, and the saturation of magnesium in low-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C7/064C21C1/02
CPCC21C1/02C21C7/0006C21C7/064
Inventor 刘洪银郝帅孙建卫王孝科路峰袁鹏举亓伟伟王奉县
Owner SHANDONG IRON & STEEL CO LTD
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