Basic safety requirements for high-temperature molten metal operations in steel plants

 　　one

　　Safety of lifting molten metal

　　✔ A cast crane with a fixed gantry hook should be used.

　　✔ Before lifting molten metal, the commander should confirm that the lifting area is clear of personnel, vehicles, and obstacles; During the lifting process, personnel are not allowed to pass or stay in the lifting area.

　　✔ The lifting operation of molten metal should be commanded by a dedicated person. During the lifting operation, the lifting driver must immediately stop and confirm any emergency stop signal issued by anyone, and only after the command personnel issue a power train signal again can the power train be started again.

　　✔ The lifting tools (hooks), steel wire ropes, and ear shafts of containers (equipment) containing molten metal of cranes should be regularly inspected. Any internal cracks, shell weld cracking, obvious deformation, ear shaft wear greater than 10% of the diameter, mechanical failure, or lining brick damage exceeding the regulations on the ear shaft should be reported for repair or scrapped.

　　✔ When a crane for lifting molten metal experiences sudden power outages or brake failure during operation, it should be operated in accordance with the requirements of the emergency response plan. The on-site emergency response plan should be rehearsed every six months.

　　✔ Cooling molten metal high-temperature tanks and packages with water should not be adopted to accelerate the turnover of tanks and packages. The tank or package containing molten metal should not be lifted due to water ingress. Personnel should immediately evacuate the hazardous area and wait for the water on the molten metal surface to evaporate before carrying out the lifting operation.

　　two

　　Prevent molten metal from exploding when exposed to water

　　✔ There shall be no accumulated water near the production, disposal, and storage facilities, transportation routes, and nearby areas of molten metal, and there shall be no potential for dripping or leakage directly above them.

　　✔ Strictly inspect the raw materials and auxiliary materials to ensure that they are dry and dry (such as adding scrap steel to the converter).

　　✔ Operators in positions with high temperature radiation and molten metal splashing hazards should be equipped with flame-retardant clothing and other protective equipment. When handling high-temperature molten metal, they should wear dark goggles and protective masks.

　　three

　　Disposal of molten metal leakage

　　✔ Metal casting, continuous casting, casting processes, and lifting areas must be equipped with emergency discharge and storage facilities such as hot metal tanks, steel tanks, overflow tanks, and intermediate overflow tanks. If any leakage occurs during the lifting of molten iron tanks, it should be promptly transferred to the accident tank for treatment.

　　✔ In the event of a molten metal leakage accident, timely block the flowing liquid with solvents or sand to prevent the molten metal from flowing into ditches, cables, and other pipe trenches (spaces) in large areas, causing secondary disasters.



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