Safe cooling production method for electric arc furnace refractories

Abstract

The invention discloses a safe cooling production method of a refractory material of an electric-arc furnace. The method comprises the steps that firstly, a second circulating pump and a first circulating pump are started, direct cooling water circularly flows among a water storage pond, a water jacket of the electric-arc furnace and an inner pipe of a heat exchange box through the second circulating pump, and indirect cooling water circularly flows between a cooling tower and a heat exchange box through the first circulating pump; and secondly, after a power failure, a worker observes a temperature gauge, a first pressure gauge and a second pressure gauge, when the temperature of the water jacket is higher than 75 DEG C, a third valve is opened, then a second valve is opened, water in a water supplementing box flows into the water jacket, and the heated water in the water jacket flows to a heat exchange box through a first pipeline under the action of water pressure in the water supplementing box and finally flows into the water storage pond. By means of the method, the electric-arc furnace can be prevented from release heat pollution outwards in normal work, the cooling water canbe prevented from releasing steam pollution outwards, high temperature and high pressure caused by a vaporization phenomenon can be avoided during the power failure, safe operation is ensured, and meanwhile the water resource utilization rate is high.

Description

technical field [0001] The invention relates to the technical field of refractory material production, in particular to an electric arc furnace cooling mechanism. Background technique [0002] In the production process of molten casting refractories, electric arc furnace is commonly used equipment. During operation, the electric arc furnace melts the refractory raw materials in it, so it needs to maintain a high temperature continuously during the production process. Excessively high temperatures can reduce equipment life and prevent workers from working properly in the workshop. Therefore, it is necessary to cool the furnace wall of the electric arc furnace. While maintaining the high temperature in the furnace, control the high temperature area in the electric arc furnace to prevent a large amount of heat from being transferred to the environment, reduce the service life of the equipment, and make the workshop unsuitable for manual work. Operation. [0003] The existing...

AI Technical Summary

Problems solved by technology

The disadvantages of this cooling structure are: the temperature of the cooling water is high after being heated by the electric arc furnace, and even boiling occurs when the flow rate is small; when the cooling water is discharged, the steam diffuses, which pollutes the factory area and damages the walls of the factory area due to long-term humidity

The discharged cooling water cannot be reused, and the waste of water resources is serious

[0004] In addition, the existing cooling structure also has potential safety hazards: if an unexpected power failure occurs during the production process, the water pump will stop running and the cooling water will no longer flow; at this time, the high-temperature feed liquid in the electric arc furnace will not be cooled rapidly due to power failure, Instead, it will maintain a high temperature for a long time

In this way, the water in the water jacket of the electric arc furnace will be heated to boiling, and if the system is well sealed, there will be a danger of explosion; if the system is an open system, a large amount of steam will be brought in, preventing personnel from entering the production area

At present, there is no electric arc furnace production method that can solve this potential safety hazard

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