Hot stuffy processing device for steel slag

Abstract

The invention relates to a hot stuffy processing device for steel slag, which comprises a tank wall, wherein the tank wall comprises a lateral surface, a bottom surface and an upper end opening; the upper part of the tank wall is provided with an exhaust pipe; the lower part of the tank wall is provided with an exhaust water pipe; a circle of water seal tank with a U-shaped cross section is arranged along the upper end opening of the tank wall, and the tank wall comprises an outer wall of heat-resisting concrete formed by pouring and tamping at one time; the lateral surface of the tank wall also comprises an inner wall formed by pouring and tamping a steel fiber reinforced fire-retarding pouring material at one time; the outer wall comprises a steel mesh M; pre-embedded parts are uniformly distributed and welded on the steel mesh M; the inner wall comprises a steel mesh N; the steel mesh N is in welding connection with exposed joints of the pre-embedded parts on the outer wall one by one; and the thickness of the outer wall is 1 to 2 times that of the inner wall. The hot stuffy processing device for the steel slag has higher hot stuffy processing efficiency, longer service life of equipment, lower maintenance cost, safer operation and simple structure.

Description

technical field [0001] The invention relates to an iron and steel smelting device, more specifically, the invention relates to a recycling and processing device for steel-making slag. Background technique [0002] Steel slag is an inevitable by-product of the steelmaking process, and its discharge accounts for about 15-20% of crude steel output. The utilization rate of steel slag in my country is still relatively low at present. In recent years, my country's iron and steel industry has developed rapidly. According to statistics, in 2008, my country's crude steel output reached 500 million tons, and the annual slag production reached 50-100 million tons. Reasonable utilization and effective recycling of steel slag is an important measure to achieve sustainable development of the steel industry, solve the shortage of steel scrap in steel enterprises, reduce production costs, and improve economic benefits of enterprises. It is also a favorable measure to protect the environment...

AI Technical Summary

Problems solved by technology

[0004] At present, hot steel slag hot stuffy equipment commonly used in China includes the device disclosed in Chinese patent document ZL200420058581.6. Above ℃, the installation frame and working lining of each section in the process of sub-spraying water cooling need to withstand sudden cooling and sudden heat. In addition, during the process of entering and unloading the slag, the excavator will mechanically collide with the hot stuffy equipment, which will easily cause bending deformation of the installation frame and deformation of the working lining. Breakage, resulting in frequent replacement of lining boards, etc., and difficult maintenance, high maintenance costs, and serious safety problems during the maintenance process; in addition, the gap between the working lining and the concrete pool wall is gradually emptied, the working lining is easily deformed and broken, and if it is not replaced in time, it will easily lead to high temperature. The state steel slag is in direct contact with the concrete pool wall, and under the action of high temperature, the concrete pool wall will burst and destroy the permanent layer structure, resulting in a short service life of the equipment

[0005] Another Chinese patent document ZL200720174489.X discloses a structure in which a layer of heat insulation is added in the gap between the working lining and the concrete pool wall. The working lining is fixed by a fixing component fixed on the concrete pool wall. After the fixed components and the working lining are deformed, it is very difficult to disassemble the working lining

If the working lining cannot be repaired in time, it will easily lead to direct contact between the high-temperature hot steel slag and the heat insulation layer and the concrete pool wall. Under the action of high temperature, the concrete pool wall will burst and the service life of the equipment will be short

[0006] According to the actual operation experience, it has been proved that the domestic common steel slag hot stuffy treatment device has accumulated 20 furnaces of hot stuffy steel slag in one month of normal use, and failures such as deformation of the installation frame, damage of the working lining, and fall-off of embedded parts occurred within one month, resulting in maintenance. Frequent, high maintenance costs, prominent safety problems in the production process, seriously affecting production efficiency, and extremely short equipment life

[0007] In addition, a breather valve is installed on the cover of the furnace to increase the pressure relief channel, but because the steam generated in the furnace contains a large amount of dust, it is easy to block the hole of the breather valve, and if it is not handled in time, the pressure in the furnace will increase suddenly and cause flying If it is serious, it may cause an explosion, seriously affecting production safety

Images