Device and method for pretreating steel slag through air quenching of CO2-containing tail gas: Fid-Bau Portal

Device and method for pretreating steel slag through air quenching of CO2-containing tail gas

ZHANG SHICAI

The invention discloses a device and method for pretreating steel slag through air quenching of CO2-containing tail gas. The device comprises a steel slag tank and an air quenching device, wherein the steel slag tank is a square tank, a grating plate is obliquely arranged in the middle of the interior of the steel slag tank, and a waste slag chamber is fixedly connected to the middle of the side wall, away from the air quenching device, of the steel slag tank, and the bottom discharging port of thesteel slag tank is fixedly connected with a conveying pipe. The method has the beneficial effects that the content of free calcium oxide in the steel slag at about 100 DEG C obtained by the production method is low, the steel slag has good stability, efficient pretreatment of the steel slag can be well realized, and the subsequent resource utilization rate of the steel slag is greatly improved; after high-temperature flue gas at an air pipe outlet of the cyclone separator is discharged from a flue gas port, waste heat is removed for power generation for waste heat recovery, the heat energy utilization rate is improved, the heater is installed at the bottom of the steel slag tank, the heating temperature of the heater is higher than the steel slag melting temperature, the steel slag tank can be heated when necessary, and the steel slag is ensured to be in a liquid state.

本发明公开一种利用含CO2尾气风淬预处理钢渣的装置及方法，包括钢渣槽和风淬器，钢渣槽为方形槽，钢渣槽的内部中部设置有格栅板，格栅板倾斜设置，钢渣槽远离风淬器的侧壁中部固定连接有废渣室，钢渣槽的底端出料口固定连接有输送管，本发明的有益效果包括：此制作方法所得100℃左右钢渣游离氧化钙含量低，具有很好的稳定性，可以很好的实现钢渣高效预处理，大大提高其后续资源化利用率，旋风分离器风管出口高温烟气从烟气口排出后，去余热发电进行余热回收，提高热能利用率，通过在钢渣槽底部安装加热器，加热器加热温度大于钢渣熔融温度，必要时能加热钢渣槽，保证钢渣为液态。

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