Liquid steel slag wind quenching granulation production line and production technology thereof

Abstract

The invention discloses a liquid steel slag wind quenching granulation production line and a production technology thereof. The liquid steel slag wind quenching granulation production line comprises apower control room, a compressed air source, an air pipeline, a steel slag granulation mechanism, a steel slag processing chamber, an exhaust air purification tower, an exhaust duct, a cooling circulation pool, a slag material recycling mechanism, a slag extracting pool and an observation chamber; a liquid steel slag wind quenching granulation production technology comprises gas introduction, steel slag pouring, granulator regulation, wind quenching granulation, smoke dust processing and granulated particle cooling and collection; and according to the production line and the production technology provided by the invention, the compressed air source is enabled to directly act on a supersonic gas ejector in the granulator through an air pipeline, thus, an air flow is enabled to perform centralized wind quenching for the liquid steel slag, a processing technology is optimized, regulation of the granulator is added before wind quenching granulation, so an optimal work position is found torealize a relatively ideal liquid steel slag granulation effect, a spraying water pipe performs certain washing for smoke dust, then, the smoke enters into the exhaust air purification tower, and thus, further filtering and purification is realized.

Description

technical field [0001] The invention belongs to the technical field of steel slag treatment, and in particular relates to a liquid steel slag air-quenching granulation production line and a production process thereof. Background technique [0002] Steel slag is a kind of waste slag produced in the steelmaking process. Steel slag is formed at a temperature of 1500-1700 ° C. It is in a liquid state at a high temperature. After cooling the liquid steel slag, it can be quenched into granules. After searching for patent No. CN110747302A, steel slag air quenching device and a steel slag granulation method, the steel slag air quenching device includes a device main body with a forced cooling chamber, a liquid slag chute and a main air duct are arranged in the front section of the device main body, and the air outlet of the main air duct is located at the lower side of the chute end of the liquid slag chute and Facing the forced cooling chamber, the forced cooling chamber is provide...

AI Technical Summary

Problems solved by technology

[0003] But there are following deficiencies: 1) At least two booster air nozzles with nozzles facing the forced cooling chamber are arranged on the upper side of the main body of the device, which cannot assist in forming a more effective wind quenching process, and require higher pressure in the wind quenching process If the air flow is quenched, the set booster air nozzle will affect the flight trajectory of the liquid steel slag, which is not conducive to the cooling of the steel slag during the flight; 2) when using its steel slag granulation method for construction and production, due to It is a fixed air outlet, which cannot be effectively adjusted according to the state of slag, resulting in poor quality of some granulated products

Images