Wear-resistant and deformation-resistant pulverized coal spray gun
By adopting a multi-layered heat-resistant stainless steel and ceramic material combination structure in the blast furnace pulverized coal injection lance, the wear resistance and deformation resistance of the lance are enhanced, solving the problem of short service life of existing lances and improving the stability and efficiency of blast furnace production.
CN224227098UActive Publication Date: 2026-05-12CHANGSHU BURNER FACTORY
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Patent Information
- Application Number
- CN202521690220.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-11
- Publication Date
- 2026-05-12
- Estimated Expiration
- 2035-08-11
AI Technical Summary
Technical Problem
现有的高炉煤粉喷枪在高温、高流速煤粉冲刷及复杂气流环境下，存在抗形变能力差、耐磨性不足，使用寿命短，影响高炉生产稳定性和效率。
Method used
The high-temperature end gun barrel assembly consists of an inner composite ceramic steel tube, a middle layer of anti-deformation steel tube, and an outer layer of anti-deformation steel tube. Combined with a cold end protection steel tube, a vibration damping ball, and a gun adjustment steel plate, the composite ceramic tube is made by a self-propagating aluminothermic-cladding method to enhance wear resistance and deformation resistance.
Benefits of technology
It improves the wear resistance and deformation resistance of the spray gun, extends its service life, reduces equipment maintenance costs, and improves the production efficiency and stability of the blast furnace.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model belongs to the technical field of pulverized coal injection devices, and particularly relates to a wear-resisting and deformation-resisting pulverized coal spray gun which is provided with a high-temperature end gun barrel assembly, a low-temperature end steel pipe and a pulverized coal inlet wear-resisting steel pipe. The other end of the low-temperature end steel pipe is connected with one end of a pulverized coal inlet abrasion-resistant steel pipe, a cold-end protection steel pipe is welded to the outer portion of the connecting position of the low-temperature end steel pipe and the pulverized coal inlet abrasion-resistant steel pipe, and the high-temperature end gun barrel assembly is formed by connecting an inner composite ceramic steel pipe, a middle-layer anti-deformation steel pipe and an outer-layer anti-deformation steel pipe in a sleeved mode from inside to outside. A high-temperature end protection steel pipe is arranged outside the high-temperature end gun barrel assembly and the low-temperature end steel pipe, and two shock-stopping balls are welded outside the high-temperature end protection steel pipe; the utility model has the beneficial effects of strong anti-deformation capability, wear resistance, long service life, high production efficiency, convenience in installation and the like.
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