Secondary treatment system for steel slag and method thereof

Abstract

The invention discloses a secondary treatment system for steel slag and a method thereof, and belongs to the technical field of comprehensive utilization of resources and environmental protection. The system comprises a transfer station, a primary crushing and screening compartment, a secondary screening compartment, a third screening compartment, a secondary crushing compartment and a belt conveying system, and is mainly used for reclaiming iron metal in the steel slag of a converter. In the system, the steel slag is subjected to two-stage crushing, three-stage screening and seven-stage magnetic separation, and the iron metal content in the tailings of the final steel slag is less than 1 percent. The system ensures that the secondary treatment process for the steel slag has the advantages of compactness, energy conservation and environmental protection. The secondary treatment system for the steel slag has the advantages of small floor area, simple process and low investment, and can furthest reclaim the iron metal in the steel slag and realize efficient reclamation and utilization of the resources. The system can prompt the rapid development of recycling economy of steel enterprises, propels the comprehensive utilization of solid wastes, and fully achieves the targets of energy saving and emission reduction.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of resources and environmental protection, and in particular provides a steel slag secondary treatment system and its method, which can maximize the recovery of metallic iron in steel slag, reduce the content of metallic iron in steel slag tailings, and promote solid Comprehensive utilization of waste, vigorously develop circular economy. Background technique [0002] Steel slag is a byproduct of the steelmaking process. In the steelmaking process, steel slag begins to form from the melting of the furnace charge until the steel is tapped. During the tapping process of the converter, a small amount of molten steel is usually poured out together with the steel slag, so that a considerable amount of metallic iron will remain in the steel slag. [0003] With the increase of steel production, the discharge of steel slag increases accordingly, but the utilization rate of steel slag i...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a steel slag secondary treatment system and its method, so that it can maximize the metal recovery rate, expand the advanced treatment of steel slag comprehensive utilization, according to the quality requirements and utilization requirements of steel slag, make the broken , screening, and magnetic separation operations can adjust the particle size and quality of the product at any time to achieve the required product performance indicators; another purpose is to actually solve the problem that the original steel slag processing production line occupies a large area, the process is complicated, there are many personnel, and the investment is high. question

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