Recovery device and method of furnace bottom steel slag of steel-making furnace

Abstract

The invention relates to the technical field of steel-making furnace steel slag treatment, and more specifically, relates to a recovery device and method of furnace bottom steel slag of a steel-makingfurnace. According to the technical scheme, the recovery device is characterized by comprising four supports which are vertically arranged on the ground in a rectangular mode. The horizontal heightsof the two supports located on one side are larger than those of the two supports located on the other side. A screen frame is installed on the tops of the supports, and an opening is formed in the middle of the surface of the screen frame. A screen mesh is laid on the screen frame. The invention further provides a recovery technology process of utilizing the recovery device to recover the steel slag. The recovery device and method of the furnace bottom steel slag of the steel-making furnace have the advantages that the technology is continuous, the facility is simple and is centralized, and the smelting cost is reduced.

Description

technical field [0001] The invention relates to the technical field of steel slag treatment in a steelmaking furnace, more specifically, it relates to a recovery device and a recovery method for steel slag under the steelmaking furnace. Background technique [0002] The slag discharged from the steelmaking process mainly refers to the oxides formed after the elements in the metal charge are oxidized during the blowing process, the eroded furnace lining material and furnace charge, the impurities brought in by the metal charge, and the impurities added to adjust the properties of the steel slag. slag-making materials. The amount of slag is generally 8% to 15% of the steel output. The main chemical components of steel slag are: CaO, SiO2, Al2O3, FeO, Fe2O3, MgO, MnO, P2O5, etc. For some special smelting steel types, steel slag also contains V2O5, TiO2, etc. The oxides of Fe in steel slag exist in the form of FeO and Fe2O3, and FeO is the main one, the total amount is below 2...

AI Technical Summary

Problems solved by technology

[0004] There are defects in the above technical scheme: 1. The slag of the converter under the furnace cannot be directly returned to the furnace; 2. The layout of the treatment process is scattered and complicated. Due to the influence of large slag iron and steel blocks in the steel slag, the crushing ratio of each section is small, and the final product has a relatively small particle size. Generally, the particle size of scrap steel slag discharged after primary treatment is 200mm to 350mm, and secondary treatment is required. At the same time, the particle size of waste material after this process is relatively large, which increases the difficulty and cost of breaking and grinding steel slag in the subsequent comprehensive treatment; 3 .The construction of factories is scattered, covers a large area, consumes water resources, and pollutes the environment with dust, tailings and waste water discharge

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