Reinforced silicon nitride nozzle groove refractory brick
By introducing a flow-guiding center plate and a threaded groove structure into the refractory bricks of the nozzle groove, the problems of molten steel retention and fixed connection gaps were solved, thus achieving smooth flow of molten steel and stable installation.
CN223997314UActive Publication Date: 2026-03-17YIXING ZHONGYI FURNACE ENG CO LTD
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Patent Information
- Application Number
- CN202520449598.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-03-17
- Estimated Expiration
- 2035-03-14
AI Technical Summary
Technical Problem
When existing refractory bricks with multiple channels are installed, molten steel tends to stagnate at the top and gaps are easily generated at the fixed connection points.
Method used
A reinforced silicon nitride nozzle groove refractory brick was designed, including an inlet groove, a flow guiding center plate, a threaded groove, and a combined square groove. The flow guiding center plate guides the flow of molten steel, the threaded groove promotes axial rotational flow, and the supporting square frame improves installation stability.
Benefits of technology
It reduces the dwell time of molten steel, decreases eddies and inclusions, improves the purity of molten steel, enhances installation stability, and reduces gap loosening.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model relates to the technical field of water gap groove refractory bricks, in particular to a reinforced silicon nitride water gap groove refractory brick which comprises a refractory brick body, a liquid inlet hole groove is formed in the center of the top face of the refractory brick body, a flow guide center disc is arranged in the center of the liquid inlet hole groove, and a first fillet is arranged at the joint of the hole wall and the bottom face of the liquid inlet hole groove. A water gap through groove is formed in the refractory brick body in a penetrating mode, and a thread groove is formed in the curved surface of the water gap through groove. According to the reinforced silicon nitride nozzle groove refractory brick, according to the liquid inlet hole groove and the nozzle through groove formed in the refractory brick body, after molten steel is poured into the liquid inlet hole groove, the molten steel is rapidly guided into the water inlet through groove through the flow guide center disc on the liquid inlet hole groove, gathering of vortexes and inclusions is reduced, and meanwhile, according to the first filleted corner and the second filleted corner, the molten steel can be rapidly guided into the water inlet through groove through the first filleted corner and the second filleted corner. Molten steel in the liquid inlet hole groove can be quickly discharged out of the water outlet through groove, and the time of the molten steel staying in the liquid inlet hole groove is shortened.
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