Temperature monitoring system of granulator

Abstract

The present invention discloses a temperature monitoring system of a granulator. The temperature monitoring system of the granulator comprises the granulator, thermocouples, a rotating shaft, a through-aperture conductive slip ring, a rotation-stopping device, a bearing and a shaft sleeve. The bearing sleeves the rotating shaft, and the bearing is fixed by the shaft sleeve. The granulator comprises a granulator main body and a hollow cylindrical sleeve. The granulator main body is provided with the multiple thermocouples, the bottom of the granulator main body is provided with the hollow cylindrical sleeve, and the hollow cylindrical sleeve is arranged on the top of the rotating shaft and fixed via a sleeve fastening screw. The side wall of the hollow cylindrical sleeve is provided with aplurality of small holes along the radial direction. The rotation-stopping device is arranged under the hollow cylindrical sleeve, and the rotation-stopping device is fixed on the shaft sleeve via screws. A gap is arranged between the bottom of the granulator and the top of the rotating shaft. The through-aperture conductive slip ring comprises a stator and a rotor, and the stator is located at the outside of the rotor. The system can realize the acquisition of the surface temperature of the granulator, and the system can be widely used in steel, metallurgy and other fields.

Description

technical field [0001] The invention relates to a liquid slag granulator, in particular to a temperature monitoring system of the granulator. Background technique [0002] At present, steel plants generally adopt water quenching treatment for blast furnace slag. The water quenching treatment process is to rapidly cool the liquid blast furnace slag in the molten state in water to limit its crystallization during the cooling process and make the blast furnace slag under the action of its thermal stress. Broken, the amorphous slag product obtained in the water quenching process can be used as one of the substitutes for cement clinker, thereby obtaining higher added value. Although the water quenching process realizes the large-scale consumption of liquid blast furnace slag, the water quenching process also has the following problems: high water consumption, even if water circulation is implemented, 1 ton of blast furnace slag needs to consume about 1 ton of fresh water; The ch...

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Problems solved by technology

Although the water quenching process realizes the large-scale consumption of liquid blast furnace slag, the water quenching process also has the following problems: high water consumption, even if water circulation is implemented, 1 ton of blast furnace slag needs to consume about 1 ton of fresh water; The chemical composition of blast furnace slag contains alkaline components, which will pollute the water when it is treated by water quenching process; due to the special chemical composition of blast furnace slag, a large amount of H produced in the process of water quenching and quenching 2 S and SO x , and discharged into the air with water vapor, causing environmental pollution; the water quenching process does not recover the sensible heat of the slag, and does not realize the recycling of energy; the water content of the water slag produced in the water quenching process is as high as 10% or more , it also needs to consume a lot of energy to remove the water contained in the drying process

However, in the current centrifugal granulation process of liquid slag, due to the high-speed rotation of the granulator, it is difficult to measure the real-time temperature on the surface of the granulator, and the working temperature of the granulator cannot be reflected in real time, so that the heat of the granulator cannot be measured. Protective measures provide corresponding technical guidance

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