A vertical steel slag autoclave with autoclave and steel slag treatment method

Abstract

The invention relates to a vertical steel slag pressure hot-disintegration still kettle and a slag processing method. The still kettle and the slag processing method with the still kettle adopted are included. The still kettle comprises a top cover (1), a cylinder body (2), water spraying devices (3), safety devices (4), a water drainage device (5), an exhaust voltage stabilizing device (6), a safety monitoring device (7), a guide device (8), a slag tank (9), a slag tank support (10) and a gas replacement device (11). According to the vertical steel slag pressure hot-disintegration still kettle, steel slag is processed in an airtight pressure container through waste heat of the steel slag, no external energy source is consumed, no dust is generated, and the still kettle is efficient and environment-friendly, and saves energy; and in the processing process, water does not make contact with the melted steel slag, the pressure container is equipped with the safety devices, and the vertical steel slag pressure hot-disintegration still kettle and the slag processing method are safe and reliable.

Description

technical field [0001] The invention relates to waste heat utilization, solid waste treatment and resource utilization technology in the iron and steel metallurgy process, especially the treatment of converter steel slag and casting slag produced in the steelmaking process, and specifically relates to a vertical steel slag with autoclaving Stuffy autoclave and its treatment method. Background technique [0002] At present, there are many ways to treat steel slag, such as hot pouring method, hot stuffing method, water quenching method, wind quenching method, drum granulation method and granulation wheel method, etc. The hot-splashing method is to pour molten liquid steel slag into the hot-splashing field, cool it naturally by pumping water or air, and then carry out crushing and magnetic separation treatment; After the steel slag is pulverized, it is crushed and magnetically separated; the water quenching method is to cool the molten steel slag with high-pressure water and c...

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Problems solved by technology

Problems to be solved in this process: the low treatment rate of steel slag is generally below 50%, and there is still a large amount of dry slag discharged; the power consumption of system equipment is high, the failure rate of equipment is high, and the investment is large; steel slag is not easy to be crushed and granulated. The equipment is severely worn, and the steel balls inside are often replaced

The granulation wheel process is to transport the liquid steel slag to the processing workshop, use a crane to slowly lift the slag tank, pour it into the high-speed rotating granulation wheel, break and granulate the steel slag, spray water to cool it, and then fall into the pool. After being treated by granulation wheel water quenching method, the particle size is small, the steel slag crystallizes densely, it is difficult to grind finely, and its gelling performance becomes poor, which affects the application of steel slag in the building material industry

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