The ladle refining furnace is a critical metallurgical apparatus designed to refine molten steel initially processed in primary smelting units such as electric arc furnaces, open-hearth furnaces, or converters. It plays a pivotal role in adjusting molten steel temperature and serving as a processing buffer to ensure seamless compatibility with continuous casting and rolling operations. As a cornerstone of secondary steelmaking, the ladle furnace is indispensable for achieving high-quality steel production outside the primary smelting environment.
Operating Guidelines for Twin Ladle Furnace
Pre-Operational Inspection
Verify the safety and reliability of interlocking protection devices and travel switches on the ladle car before initiating operations.
System and Mechanical Checks
Inspect all critical systems, including the vacuum system, oxygen blowing, hydrogen blowing, thermal insulation, heating, and feeding mechanisms. Ensure all components are secure and functional before startup.
Sample Preparation
Confirm that sample spoons and molds are dry and ready for use to prevent contamination or safety hazards.
Station Tools Assessment
Check all station tools for usability and accessibility to avoid operational delays.
Coordination with Support Units
Establish contact with the power supply unit and vacuum control room as per operational requirements to ensure seamless integration.
Safety Signaling
Activate audible or visual safety signals (e.g., ringing bells) before commencing ladle car movement to alert personnel.
Process Execution
Follow standardized procedures for high-voltage power transmission and vacuum degassing to maintain process integrity.
Ladle Car Movement
Prior to starting the ladle car, inspect the track for obstructions and ensure clear pathways to prevent accidents.
High-Voltage Line Safety
Prohibit passage under high-voltage lines after power transmission to mitigate electrocution risks.
Pressure Pipe Handling
Close valves before connecting or disassembling pressure pipe joints to avoid unintended releases of pressurized media.
Oxygen Usage Protocols
Strictly avoid placing hands near the card head when using oxygen and refrain from wearing greasy gloves to prevent combustion hazards.
Molten Steel Disposal
Pour remaining molten steel from samples into designated dry areas to prevent moisture-related explosions or splashing.
Vacuum Release Precautions
During vacuum release, ensure no personnel are near the air supply pipe orifice to avoid injury from sudden pressure changes.
Maintenance and Inspection
When accessing the heating bridge for maintenance, extract the high-voltage key, cut off power supply, and carry personal keys to ensure equipment isolation.
Electrode Handling
Assign specialized personnel to command lifting operations. Use steel wire ropes for lifting rings and hooks, ensure hook safety mechanisms are engaged, and prohibit simultaneous lifting of all three phases during electrode replacement.
Workspace Management
Avoid stacking objects on the furnace cover or bridge. Prohibit throwing items between elevated work areas to prevent falling hazards and ensure a safe working environment.
By adhering to these procedures, operators can enhance safety, efficiency, and quality in ladle refining furnace operations, minimizing risks and optimizing production outcomes.
We are a professional electric furnace manufacturer. For further inquiries, or if you require submerged arc furnaces, electric arc furnaces, ladle refining furnaces, or other melting equipment, please do not hesitate to contact us at susie@aeaxa.com
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