Unlock instant, AI-driven research and patent intelligence for your innovation.

Molten iron spraying desulfurization spraying gun

A desulfurization spray gun and molten iron technology, applied in the manufacture of converters, etc., can solve the problems that the gun core cannot be reused, the main tube is twisted and deformed, and cannot be pulled out for replacement, so as to facilitate extraction and replacement, enhance riveting force, and improve repair The effect of the number of uses

Inactive Publication Date: 2009-07-22
武钢集团有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the distortion and deformation of the main pipe of the spray gun core in the prior art, it cannot be pulled out and replaced when the spray tube is blocked, and the gun core cannot be reused.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Molten iron spraying desulfurization spraying gun
  • Molten iron spraying desulfurization spraying gun

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0016] Specific implementation mode one: see figure 1 and figure 2 The molten iron injection desulfurization lance in this embodiment consists of a gun shaft 13 and a spray gun complex 12 flanged to the gun shaft 13. The spray gun complex 12 includes a reinforcing tube 1, a main pipe 14 arranged in the reinforcing tube 1 and a The blowing pipe 15 in the main pipe 14, the graphite blowing pipe mounting seat 8 is fixed under the reinforcing pipe 1 and the main pipe 14, and the outside of the blowing pipe 15 bottom is provided with a graphite blowing pipe 10, and the graphite blowing pipe 10 is fixed on On the graphite blowing pipe mounting seat 8, the outer side of the reinforcing pipe 1 is provided with a refractory material gun lining 7, and a bridging weldment 2 is uniformly fixed radially and axially between the reinforcing pipe 1 and the main pipe 14; 1 is provided with a bridge welding piece installation hole 3, and the bridge weldment 2 is placed in the bridge welding p...

specific Embodiment approach 2

[0022] Specific implementation mode two: see figure 1 and figure 2 , the present embodiment is the same in structure and manufacturing method as the molten iron blowing desulfurization lance described in Embodiment 1, the difference lies in the selection of materials, specifically as follows: use No. 15 carbon steel seamless pipes to make the blowing pipe 15, the main pipe 14. Reinforcing tube 1, use No. 35 steel to make graphite blowing tube mounting seat 8, use iron-chromium-aluminum resistance wire with a wire diameter of 6mm to make ring riveting piece 6, the outer diameter of the ring is 3mm smaller than the outer diameter of the refractory gun lining, A wire rod with a wire diameter of 10 mm is used to make a V-shaped riveting member 4 , a double-V butterfly-shaped riveting member 5 and a gun head V-shaped riveting member 9 . The bridging weldment 2 is made by shearing threaded steel wire rod with a wire diameter of 10 mm, and the graphite blowing pipe 10 is made by us...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The utility model relates to a molten iron injection desulfurization spray gun, which relates to a spray gun used for the pretreatment of molten iron injection desulfurization in a ladle. Aiming at the problem in the prior art that the main pipe of the spray gun core is twisted and deformed, it cannot be pulled out and replaced when the blowing tube is blocked, and the gun core cannot be reused. The present invention includes a gun rod and a spray gun complex connected with the flange of the gun rod. The spray gun includes a reinforced pipe, a main pipe arranged in the reinforced pipe and a spray pipe arranged in the main pipe. A graphite nozzle is fixed under the reinforced pipe and the main pipe. Blowpipe installation seat, the outside of the lower part of the blowpipe is provided with a graphite blowpipe and the graphite blowpipe is fixed on the graphite blowpipe mount, the outside of the reinforced pipe is provided with a refractory gun lining, between the reinforced pipe and the main pipe along the The radial and axial uniform fixed bridge weldment. This design can improve the rigidity and strength of the gun core, avoid the twisting and deformation of the main pipe caused by repeated use of the spray gun, increase the number of repairs and uses of the gun core, and reduce the production cost of the spray gun.

Description

technical field [0001] The invention relates to a molten iron blowing desulfurization spray gun used for blowing desulfurization pretreatment outside a molten iron furnace before converter steelmaking, in particular to a spray gun used for blowing desulfurization pretreatment of molten iron in a molten iron tank. Background technique [0002] At present, in the metallurgical industry, the structure of spray guns used for desulfurization pretreatment outside the molten iron furnace before converter steelmaking varies according to the type of desulfurizer used, but the main function of all spray guns is to transport the desulfurizer to the depth of the molten iron. Through homogeneous or interfacial reaction, the molten iron desulfurization process is completed. It is mainly composed of two parts: a metal gun shaft and a spray gun complex. The gun shaft and the spray gun complex are connected by flange bolts. Among them, the spray gun complex is composed of a metal gun core an...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/064C21C5/46
Inventor 欧阳德刚罗安智胡清明任迅陶晓林王清方
Owner 武钢集团有限公司