Online slagging method and device of walking-beam furnace

Abstract

The invention discloses an online slagging method and an online slagging device of a walking-beam furnace. The online slagging device comprises a heat-resistant steel plate which is provided with an opening at the upper part and is in a rectangular box structure. Metal anchoring parts are arranged on the inner wall and the outer wall of the heat-resistant steel plate. The metal anchoring parts and refractory castable are integrally molded. The refractory castable forms a plurality of funnel-shaped bins in a continuous row are formed on the inner wall of the refractory castable. A high-temperature-resistant heat insulating layer is formed on the outer wall of the heat-resistant steel plate. Slagging agent is contained in the bins. Discharge outlets for discharging the slagging agent are respectively formed in the bottoms of the bins. Discharge plugs are respectively arranged in the discharge outlets. By spreading the slagging agent to slag at the bottom the furnace and by using the high internal temperature of the furnace to accelerate chemical reaction between the slagging agent and the solidified slag at the bottom of the furnace, the slag is enabled to be modified and become a low-melting-point slag phase, the flowability of the slag is kept to be good at the working temperature of the furnace, the accumulation of the slag at the bottom of the furnace, especially the earth-surrounded parts of stand columns is reduced and the liquid slag yield of the furnace is improved.

Description

technical field [0001] The invention relates to an online slag removal method for a heating furnace, in particular to an online slag removal method for a walking beam heating furnace and a device thereof. Background technique [0002] Oriented silicon steel is an indispensable key material in industries such as electric power engineering and motor manufacturing. Therefore, the production of oriented silicon steel is of great economic benefit to iron and steel enterprises. Compared with ordinary steel, oriented silicon steel is not only complicated in production process, but also requires strict manufacturing technology. It is known as "special steel art". Many production links limit the further increase of silicon steel output. For example, in the production process of grain-oriented silicon steel, in order to stabilize the magnetism of the finished product and reduce the magnetic fluctuation caused by uneven heating, the heating temperature and heating time of the slab in t...

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Problems solved by technology

[0007] Especially in the soil enclosure of the active beam column and the middle of two adjacent columns, because of the water cooling of the column and the opening structure of the furnace bottom, the temperature here is the lowest, and the fluidity of the steel slag is the worst. This condensation accumulates and gradually blocks the opening space of the movable column, hindering the walking process of the movable beam, causing the water beam of the column to be deformed and bent due to obstruction, and in severe cases, the beam and column will be torn and leak water

At the same time, the high-temperature solid slag is in contact with the column for a long time, which will easily cause the column to generate local high temperature and vaporization, resulting in perforation of the column and water leakage, etc., forcing the heating furnace to be shut down for maintenance, and the normal operation of the furnace bottom mechanical equipment cannot be guaranteed, resulting in production. Problems such as low efficiency, high labor intensity and high maintenance cost

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