Liquid steel slag solidification dispersion treatment system

Abstract

The invention relates to a molten steel slag solidification and dispersion treatment system and method. The molten steel slag solidification and dispersion treatment system comprises a cooled dispersing agent conveying unit, a molten steel slag conveying unit, a middle slag tank, a solidified steel slag conveying unit and a rotary cooling granulator, wherein the cooled dispersing agent conveying unit and the molten steel slag conveying unit are arranged above the middle slag tank; and an outlet of the middle slag tank is arranged above the solidified steel slag conveying unit which is connected with the rotary cooling granulator. The molten steel slag solidification and dispersion treatment method comprises step as follows: when the temperature of molten steel slag is smaller than or equal to 1,000 DEG C, a solid cooled dispersing agent accounting for 30%-50% of the total mass of molten steel slag is uniformly mixed with the molten steel slag. The provided molten steel slag solidification and dispersion treatment system is simple in structure and convenient to mount and maintain, and the service life of the system is prolonged; and the molten steel slag solidification and dispersion treatment method is simple in operation process and can efficiently solidify and disperse the molten steel slag.

Description

technical field [0001] The invention relates to the technical field of steel slag processing, in particular to a liquid steel slag solidification and dispersion treatment system. Background technique [0002] Steel slag is a by-product in the steelmaking process, which has the characteristics of large output, high heat, containing recyclable metallic iron and comprehensive utilization of tailing slag. Usually, 0.1-0.15 tons of slag can be produced for every ton of steel smelting. The temperature of steel slag is usually 1350-1450°C. One ton of steel slag contains heat equivalent to about 55kg of standard coal. How to efficiently recycle the heat in steel slag is the key to energy saving and reduction in steel plants. The important technical development direction of the platoon. At present, almost all iron and steel plants at home and abroad have failed to realize the heat recovery and utilization of steel slag. The main reason is that the technology and equipment for heat r...

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Problems solved by technology

Although this invention can realize the granulation and waste heat recovery treatment of steel slag with different fluidity, its equipment structure is relatively complicated, the equipment has many mechanical failures, and its service life is low, so it is difficult to meet the actual needs of industrial production.

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