Non-stick cinder lance nozzle device, converter lance system

By using an integral seamless steel pipe inner sleeve and a ring-shaped waterway design to create a non-stick slag secondary nozzle device, the problem of steel slag easily adhering and clogging has been solved, achieving long-term stable operation and safe production of the secondary nozzle.

CN122382285APending Publication Date: 2026-07-14PANGANG GRP XICHANG STEEL & VANADIUM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PANGANG GRP XICHANG STEEL & VANADIUM CO LTD
Filing Date
2026-05-29
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

The existing converter auxiliary lance device has spliced ​​welds on the inner wall surface, which makes it easy for steel slag to adhere and accumulate, causing blockage of the auxiliary lance, affecting production continuity, and increasing the labor intensity and safety risks of slag cleaning operations.

Method used

The inner casing is made of a seamless steel pipe, combined with an outer casing and annular water channel design. The inner wall surface is kept smooth by cooling water circulation to prevent steel slag adhesion. The water channel is isolated into cooling and outlet channels by water baffles to form a complete water cooling circuit.

Benefits of technology

It effectively prevents steel slag from adhering to the inner wall surface, reduces the frequency of slag cleaning, improves production safety and equipment lifespan, and enhances production stability and efficiency.

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    Figure CN122382285A_ABST
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Abstract

This application provides a non-slag-sticking auxiliary lance device and a converter auxiliary lance system. The device includes an inner sleeve, an outer sleeve, a water-blocking component, a connecting flange, and a bottom seal. The outer sleeve is coaxially disposed outside the inner sleeve. The connecting flange is welded and fixed to the top end faces of both the inner and outer sleeves. The bottom seal is sealed to the bottom end faces of both the inner and outer sleeves, forming an annular water channel between them. The water-blocking component is fixedly disposed within the annular water channel, dividing it into an isolated cooling water channel and an outlet water channel. The outer wall of the outer sleeve is fixedly equipped with an inlet assembly and an outlet assembly. The inlet assembly connects to a water supply device and a cooling water channel, while the outlet assembly connects to a water storage device and an outlet water channel. The inner wall of the inner sleeve is a continuous, smooth surface without weld seams. This application can prevent slag from adhering and accumulating on the inner wall of the inner sleeve, avoiding slag blockage at the auxiliary lance, extending the service life of the auxiliary lance device, and improving the continuity and stability of converter steelmaking production.
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