High-temperature molten materials such as molten steel, molten iron, and steel slag will explode when they come into contact with water. When the water is completely turned into steam, its volume is increased by about 1500 times, and the destructive power is extremely large.
Steel mills mainly suffer from water explosions due to melts: converters, open furnace lances, hoods for converters, high and medium pressure cooling water for crystallizers of continuous casting machines, and explosions through melts; steelmaking furnaces The water-cooling parts of the refining furnace and the continuous casting mold are caused by the continual heating due to the blockage of the return water; the explosion occurs in the steelmaking furnace, ladle, molten iron tank, tundish, slag tank, steel leakage, slag and tipping; Explosion occurs when damp steel ladle, hot metal tank, tundish, slag pot contains molten steel, molten iron, liquid slag; when it is released into hot pot, slag, and slag in tank pits and slag pits with moist waste and accumulated water Explosion; an explosion caused by the addition of wet materials into the steelmaking furnace; the steel leakage of the cast steel system explodes in contact with the wet ground.
The main measure to prevent the melt from exploding with water is to ensure safe water supply to the cooling water system, to purify the water, and not to leak; the materials, containers and working places must be dry.
The converter and the furnace are smelted by oxygen supply to the molten pool through an oxygen lance. The oxygen lance system is composed of an oxygen lance, an oxygen pipe network, a water-cooled pipe network, a high-pressure water pump house, a primary instrument room, a hoisting and a measuring and controlling instrument. If the use and maintenance are improper, a blasting accident may occur. If there is rust and degreasing in the oxygen pipe network, it is prone to oxygen explosion accident. Therefore, the oxygen pipeline should avoid sharp bends, and take measures such as slowing down the flow rate, periodically purging the oxygen pipe, and cleaning the filter to prevent the explosion. If the pressure of oxygen in the oxygen lance is too low, it may cause the lance of the lance to be blocked, causing the gas generated by the high temperature molten pool to be irrigated and ignited. Therefore, it is necessary to closely monitor the oxygen pressure. Once the oxygen pressure is lowered, emergency measures should be taken and reported immediately; the lance of the oxygen lance should be inspected and treated in time. Due to misoperation, the oxygen gun cooling system is not returning smoothly, and the water in the gun is vaporized to prevent the high-pressure cooling water from entering the oxygen gun, which may cause the oxygen gun to explode. If the cooling water cannot stop the water in time, the cooling water may enter the molten pool and cause more damage. A serious explosion. Therefore, the cooling water returning system of the oxygen lance should be equipped with a flow meter and a pressure gauge. The oxygen returning operation should be closely monitored when the oxygen is blown. The technical training of personnel should be strengthened to enhance the sense of responsibility and prevent misuse.
The converter and the furnace are smelted by oxygen supply to the molten pool through an oxygen lance. The oxygen lance system is composed of an oxygen lance, an oxygen pipe network, a water-cooled pipe network, a high-pressure water pump house, a primary instrument room, a hoisting and a measuring and controlling instrument. If the use and maintenance are improper, a blasting accident may occur. If there is rust and degreasing in the oxygen pipe network, it is prone to oxygen explosion accident. Therefore, the oxygen pipeline should avoid sharp bends, and take measures such as slowing down the flow rate, periodically purging the oxygen pipe, and cleaning the filter to prevent the explosion. If the pressure of oxygen in the oxygen lance is too low, it may cause the lance of the lance to be blocked, causing the gas generated by the high temperature molten pool to be irrigated and ignited. Therefore, it is necessary to closely monitor the oxygen pressure. Once the oxygen pressure is lowered, emergency measures should be taken and reported immediately; the lance of the oxygen lance should be inspected and treated in time. Due to misoperation, the oxygen gun cooling system is not returning smoothly, and the water in the gun is vaporized to prevent the high-pressure cooling water from entering the oxygen gun, which may cause the oxygen gun to explode. If the cooling water cannot stop the water in time, the cooling water may enter the molten pool and cause more damage. A serious explosion. Therefore, the cooling water returning system of the oxygen lance should be equipped with a flow meter and a pressure gauge. The oxygen returning operation should be closely monitored when the oxygen is blown. The technical training of personnel should be strengthened to enhance the sense of responsibility and prevent misuse.
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