System and method for converting steel slag into renewable resources

Abstract

The invention discloses a system and a method for converting steel slag into renewable resources. The system comprises a steel slag powdering system, a steel slag separating system and a tail slag deep processing system, wherein the steel slag powdering system comprises desulphurization slag equipment, converter slag equipment, casting residue equipment and granulation self-extracting equipment which is communicated with the desulphurization slag equipment, the converter slag equipment and the casting residue equipment respectively; the steel slag separating system is connected with the granulation self-extracting equipment and comprises overturn vibration equipment, a magnetic separator, a crushing machine, a rod mill, screening / magnetic separation equipment and material storage equipment, wherein the overturn vibration equipment, the magnetic separator, the crushing machine, the rod mill, and the screening / magnetic separation equipment are led to the material storage equipment; the tail slag deep processing system is connected with a fine tail slag device and comprises a drying mechanism, a coarse grinding mechanism, a fine grinding mechanism, a first winnowing mechanism, a second winnowing mechanism, a first magnetic separation mechanism, a second magnetic separation mechanism and a steel slag fine powder groove. By the combination of the structures of the system, the design construction of the system for converting the steel slag into the renewable resources, which is clean and environment-friendly and reduces occupation space, is realized.

Description

technical field [0001] The invention relates to the technical field of smelting, in particular to a system and method for converting steel slag into renewable resources. Background technique [0002] Metallurgical steel slag is an inevitable product in the iron and steel smelting process. According to the different production levels of various iron and steel factories, 1 ton of steel will produce about 130kg of steel slag. According to this ratio, the amount of steel slag in my country has exceeded 90 million tons. Utilization will become a waste resource. [0003] Steel slag contains 8-10% scrap steel. If the steel slag is not treated, this part of iron resources will be lost in vain. Correspondingly, my country's iron ore self-sufficiency is less than 50%, and it needs to spend a lot of money to import it every year. If the tailings discharge is not comprehensively treated and utilized, it will also cause serious harm to the environment, destroy the structure of soil and ve...

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Problems solved by technology

[0003] Steel slag contains 8-10% scrap steel. If the steel slag is not treated, this part of iron resources will be lost in vain. Correspondingly, my country's iron ore self-sufficiency is less than 50%, and it needs to spend huge sums of money to import it every year. If the tailings discharge is not comprehensively treated and utilized, it will also cause serious harm to the environment, destroy the structure of soil vegetation, pollute air and water

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