High-titanium blast furnace slag cooling treatment method

Abstract

The invention relates to a cooling treatment method for high titanium blast furnace slag, which belongs to the field of the treatment of furnace slag. The technical problem to be solved by the invention is to provide a cooling treatment method for treating a large amount of high titanium blast furnace slag. The cooling treatment method for the high titanium blast furnace slag comprises the following steps: discharged blast furnace slag is cooled through the slag-turning treatment, wherein the slag-turning treatment is to perform slag turning and ensure that the thickness of a slag layer is less than or equal to 30 cm, the blast furnace slag is naturally cooled for 30 to 50 min in the air, then the watering is performed on the blast furnace slag to ensure that the thickness of accumulated water on the surface of the blast furnace slag is between 0.8 and 1.2 cm and the water is naturally evaporated to dryness; when red slag still exists after the watering, the water supplement is performed on the blast furnace slag, and the accumulated water is naturally evaporated to dryness. The cooling treatment method for the high titanium blast furnace slag is applicable to the treatment of the blast furnace slag in a large quantity in industry, has low cost, can obtain granulated slag with better performance, and has broad application prospect.

Description

technical field [0001] The invention relates to a cooling treatment method for high-titanium blast furnace slag, belonging to the field of slag treatment. Background technique [0002] With the transformation of the iron and steel industry to a zero-emission green environmental protection industry, the necessary process for environmental protection treatment - the cooling treatment process of blast furnace slag has attracted people's attention. Currently, for TiO-free 2 According to different uses, the cooling treatment methods of blast furnace slag mainly include hot splashing method, plate splashing water cooling (ISC method), water quenching method, wind quenching method, etc. The most commonly used method is the hot-splashing method, which is to pour the hot-melt blast furnace slag into the slag pot, transport it to the blast furnace slag hot-splashing site by vehicle, and use a crane to pour the blast furnace slag in the slag pot onto the slag bed or slag pit , Spray ...

AI Technical Summary

Problems solved by technology

This method is only suitable for handling solid steel slag, and cannot handle liquid (molten) blast furnace slag

Moreover, the water spraying device involved in this process increases the maintenance cost of the equipment, which is not conducive to reducing the cooling cost. Its processing capacity is limited, and it cannot handle a large amount of high-titanium blast furnace slag in a timely manner (about 12,000 tons per day).

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