Slag water quenching method and device

Abstract

The invention discloses a slag water quenching method and device, aiming at solving the problem of bad safety of slag water quenching treatment method in the prior art. According to the method, slag is distinguished and treated according to volume. The method comprises the following steps: putting slag to a processing station by a slag tipping unit, and turning on a pelletizer; cooling and crushing the slag with a stream of water by the pelletizer, and tipping the processed slag onto a grid sieve; letting the slag with large diameter enter in a slag collecting pit, crushing and recovering steel scrap, and letting the rest slag enter the slag collecting pool; letting the slag with small diameter enter in the slag collecting pool, and stirring and grabbing to a dripping slag bin. The device comprises the slag tipping unit, the pelletizer, the grid sieve, the slag collecting pit, the slag collecting pool, a turbid circulating water circulation system, and the dripping slag bin. The method and device disclosed herein have high safety, satisfy the requirements of steel-making, sintering and other processes for recycling slag with proper granularity, and are suitable for the field of steel-making technology.

Description

technical field [0001] The invention relates to a steel slag water quenching method and device. Background technique [0002] The iron and steel industry is the foundation of the national economy, and steel slag, as a derivative of the steelmaking process, continues to increase with the increase in steel production. At present, the utilization rate of steel slag in my country is very low, only about 30%, which is still far from the goal of "zero discharge" of solid waste in iron and steel enterprises. [0003] Steel slag water quenching treatment method is a relatively new liquid steel slag granulation technology, which has attracted widespread attention because of its simple process, small footprint, fast slag discharge speed, and convenient transportation. At present, the main steel slag water quenching treatment methods include: tilting tank water quenching method, granulator slag conveying ditch method and open-hole slag tank water quenching method. [0004] The water ...

AI Technical Summary

Problems solved by technology

The main defect of this method is that it is difficult to solve the cracking and explosion problems of large-scale steel slag (with molten steel)

[0007] The common defect of the above-mentioned conventional steel slag water quenching method is that mechanical tilting or slag tank opening can not effectively control the flow rate of steel slag

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