Molten iron KR desulfurization mixer bonded slag quick removal method

Abstract

The invention discloses a molten iron KR desulfurization mixer bonded slag quick removal method. According to the molten iron KR desulfurization mixer bonded slag quick removal method, a water spray jetting system is included. The water spray jetting system comprises a tap water connecting hose, a tap water control valve, a high-pressure air connecting hose, a high-pressure air control valve, a high-pressure water spray jetting gun, a tap water cut-off valve and a high-pressure air cut-off valve. On the condition that the existing equipment is not replaced, and manual and mechanical measures are used for slag removal, by taking the measure of carrying out water spray jetting on mixer bonded slag to hydrate the slag, the bonded slag can be hydrated and then get loose, the compactness and bonding strength of the bonded slag are greatly reduced, the effect that the mixer bonded slag is quickly removed manually and mechanically, the reaction kinetics conditions of molten iron KR desulfurization are improved, the secondary desulfurization rate of the molten iron is decreased, the desulfurizing agent consumption of the molten iron is reduced, the production efficiency and the technical and economic indicators of desulfurization equipment are improved, and the production requirements on low-sulfur steel for high efficiency and stability are met.

Description

technical field [0001] The invention relates to the technical field of molten iron pretreatment, in particular to a method for quickly cleaning sticky slag in a molten iron KR desulfurization agitator. Background technique [0002] Because a layer of liquid, molten or solid non-metallic slag inevitably floats on the surface of liquid metal, and even some non-metallic slags of different sizes are suspended inside the liquid metal. The surface of the appliance or container in direct contact, due to the high-temperature reaction between the non-metallic slag and the contact surface of the appliance or container, penetration and erosion, heat dissipation, cooling, crystallization and solidification, and liquid metal condensation, etc., cause non-metallic slag to stick to the contact surface of the appliance or container. The sticky slag of metal condensed particles; in addition, due to the splash of high-temperature non-metallic slag and liquid metal caused by the violent high-t...

AI Technical Summary

Problems solved by technology

According to the above report, this technology can be applied in actual production, but the control of the treatment process is difficult and the treatment time is long, which will inevitably lead to a large temperature drop of molten iron. It is difficult to popularize and apply it to iron and steel enterprises with long transportation routes and low temperature of molten iron.

[0005] To sum up, it can be seen that many scholars have carried out a large number of researches in order to reduce the difficulty of online cleaning of sticky slag in the KR desulfurization mixer of molten iron, shorten the time for cleaning slag, improve the operation rate of mechanical stirring desulfurization equipment for molten iron, and improve the kinetic conditions of stirring desulfurization reaction. A number of invention patent technologies have been formed, and some research results have achieved good application results in actual production, but there are generally deficiencies such as rising material consumption costs, long processing time, and high operating skill requirements. How to achieve low-cost, fast and efficient cleaning and mixing It is still necessary to study more reliable and effective cleaning methods for agitator sticky slag, delay sticky slag speed, and prolong sticky slag cleaning interval

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