A temperature monitoring system for a granulator

Abstract

The invention discloses a temperature monitoring system of a granulator. The temperature monitoring system of a granulator comprises a granulator, a thermocouple, a rotating shaft, a through-aperture conductive slip ring, an anti-rotation device, a bearing and a shaft sleeve; the bearing Sleeved on the rotating shaft, the bearing is fixed by the shaft sleeve; the granulator includes a granulator main body and a hollow cylindrical sleeve; it is characterized in that: a plurality of thermocouples are arranged in the granulator main body, and the bottom of the granulator main body is arranged There is a hollow cylindrical sleeve, the hollow cylindrical sleeve is set on the top of the rotating shaft and fixed by the sleeve fastening screw; the side wall of the hollow cylindrical sleeve is provided with a number of small holes in the radial direction; the bottom of the hollow cylindrical sleeve is provided with a stop The anti-rotation device is fixed on the shaft sleeve by screws; there is a gap between the bottom of the granulator and the top of the rotating shaft; the through-aperture conductive slip ring includes a stator and a rotor, and the stator is located outside the rotor; Acquisition of the surface temperature of the carburetor; it can be widely used in iron and 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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