Composite electromagnetic field monitoring-type steel ladle breathable brick

Abstract

The invention relates to a composite electromagnetic field monitoring-type steel ladle breathable brick. According to the technical scheme of the composite electromagnetic field monitoring-type steelladle breathable brick, the side face and the bottom of a breathable brick core (2) are provided with breathable brick shells (4); a breathable chamber (7) is formed by the circular concave face arranged at the bottom of the breathable brick core (2) and the bottoms of the breathable brick shells (4); the bottom of the breathable chamber (7) is provided with a power supply (6), 5-30 breathable narrow seams (3) are vertically formed in the breathable brick core (2), 2n metal-carbon composite coils (1) are evenly distributed on the peripheries of the breathable narrow seams (3), each layer is provided with the n groups of metal-carbon composite coils (1) in an axis center symmetry mode, and each group of metal-carbon composite coils (1) are in series connection; and plane arrangement of eachlayer of metal-carbon composite coils (1) is the same. n positive pole wires (5) and negative pole wires (9) are in parallel connection with positive poles and negative poles of groups of the metal-carbon composite coils (1) in each layer of metal-carbon composite coils (1). According to the composite electromagnetic field monitoring-type steel ladle breathable brick, corrosion resistance and impermeability resistance are excellent, the service life is long, and using conditions can be monitored in real time.

Description

technical field [0001] The invention belongs to the technical field of ladle air-permeable bricks. Specifically, it relates to a composite electromagnetic field monitoring type ladle breathable brick. Background technique [0002] In recent years, due to the increasing demand for high-quality steel, steelmaking technology and steelmaking process need to be improved and improved urgently. As an important part of the refining process, ladle refining outside the furnace plays an important role in the cleanliness and quality of molten steel. The breathable brick can play a role in adjusting the composition and temperature of molten steel in this process, and is a key component for the smooth implementation of the process, directly determining the reliability and completeness of the refining outside the furnace. However, with the large-scale development of ladles, the smelting conditions of breathable bricks are becoming increasingly harsh. The damage of the permeable brick mai...

AI Technical Summary

Problems solved by technology

Li Yuanbing et al. (Li Yuanbing, Li Nan, Peng Bing, etc. Development and application of corundum-spinel air-permeable bricks for steel ladles [J]. Refractory Materials, 2002, 34(1): 38-40.) by properly improving the quality of MgO Score, although the flexural strength and thermal shock stability of the corundum-spinel air-permeable brick are improved, but its volume stability is reduced; Guo Yongqian et al. (Guo Yongqian, Zhang Lixin, Xu Gang, etc. The performance and Application [J]. Refractory Materials, 2017, 51(4): 303~304.) A new type of diffused breathable brick with a combination of breathable inner core and dense high-strength materials has been developed, which has stable air permeability and prevents molten steel from seeping into steel. and other advantages, but the installation process is cumbersome, and the requirements for argon blowing operation are extremely high, and the air passage of the air-permeable brick in the early stage of refining is easily blocked and cannot be blown; After the ladle is refined, gas is always discharged from the slits of the permeable bricks to reduce the infiltration of molten steel into the slits and improve its service life. There are still two shortcomings in this invention: one is that the gas supply system is relatively complicated and difficult to control, The second is that the ladle enters continuous casting after refining, and the molten steel needs to be sedated at this time. If the blowing continues, it will affect the smelting quality of the molten steel and the smooth progress of the continuous casting process; ) patented technology, which discloses a composite diffused breathable brick for ladles, which combines the functions of the diffused breathable brick and the slit-type breathable brick, combines the advantages of the two, and can not only achieve the purpose of dispersion and ventilation, but also give full play to the The slit-type ventilation has the advantages of safety in use, but it also cannot solve the problem of serious penetration of steel and slag in the ventilation brick when tapping after refining

[0004] To sum up, after the ladle is refined, the ladle enters the continuous casting platform. From the continuous casting in place to the completion of pouring, without affecting the quality of molten steel and the continuous casting process, the permeable bricks will seriously infiltrate steel, slag and corrode. Exacerbated shortcomings have not been effectively addressed

Images