Energy-saving and environment-friendly treatment method for steel slag solid waste

Abstract

The invention relates to an energy-saving and environment-friendly treatment method for steel slag solid waste. The method uses high-temperature aging equipment, and the high-temperature aging equipment comprises a treatment frame, high-pressure aging devices and an auxiliary discharging device, and the high-pressure aging devices are arranged on the inner walls of the left end and the right end of the treatment frame. The auxiliary discharging devices are arranged on the inner walls of the front and rear ends of the treatment frame. According to the invention, steam aging is carried out on the steel slag aged by warm water for 1-2 days, so that the aging effect is improved, the time and energy are saved to a great extent, and the problem of low later efficiency of a warm water aging modeis solved. A closed space is opened through an air pressure critical value for discharging, so that the steel slag is fully aged with high-temperature and high-pressure steam before the critical value, the steel slag is turned over in a reciprocating mode in the aging process, and the steel slag aging effect and efficiency are further improved.

Description

technical field [0001] The invention relates to the technical field of steel slag solid waste, in particular to an energy-saving and environment-friendly treatment method for steel slag solid waste. Background technique [0002] The steel slag produced during the refining process of molten iron has hydraulic properties and is widely used as road base material. Using steel slag as the roadbed makes the road very hard, which can prevent grooves on the road, realize road safety and smooth driving, and reduce road maintenance costs. On the other hand, untreated steel slag generally contains quicklime CaO. CaO undergoes hydration reaction with water, resulting in volume expansion, so untreated steel slag cannot be directly used as industrial products. Steel slag needs to be aged before it can be used. [0003] The following problems often exist in the process of steel slag aging treatment. First, the aging of steel slag is often soaked in warm water to immerse the steel slag, ...

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Problems solved by technology

[0003] The following problems often exist in the process of steel slag aging treatment. First, the aging of steel slag is often soaked in warm water to immerse the steel slag, so that the quicklime in the steel slag is reacted. However, warm water aging often takes nearly a week, and due to Warm water aging can usually complete 80%-90% in one day, and the steel slag is completely aged in the remaining few days. This method is very inefficient; Affects the aging effect and aging efficiency of steel slag

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