Molten slag content detection apparatus adopting solenoid

Abstract

The invention relates to an apparatus for detecting molten slag content in a liquid metal injection flow. The apparatus comprises an annular electromagnetic sensor, a signal cable and a signal processor, wherein the annular electromagnetic sensor comprises a metal housing, a receiving coil, a compensation coil and an emission coil, the receiving coil, the compensation coil and the emission coil are sequentially arranged from the inner ring to the outer ring, and are prepared by winding a single core mineral insulated cable. The apparatus has the following characteristics that: the preparation process of the annular electromagnetic sensor is simple, the material cost is reduced, the production cycle is shortened, and the service life is prolonged.

Description

technical field [0001] The invention belongs to the field of slag content detection in the metallurgical industry, and in particular relates to a slag content detection device using an electromagnetic coil. Background technique [0002] During metal smelting, liquid metal needs to be transferred among multiple metallurgical vessels. The final slag that is transferred from one metallurgical vessel to another flows out with the liquid metal. In order to ensure the purity of liquid metal, improve the quality and utilization rate of liquid metal products, reduce the consumption of refractory materials caused by slag, and reduce the cost of smelting, etc., a slag content detection device is required to detect slag and slag in the liquid metal injection flow. Immediately terminate the operation of transferring liquid metal when the content of the liquid metal exceeds the allowable value. The existing slag content detection device utilizes the different conductivity properties of...

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Problems solved by technology

The first disadvantage is that the sensor needs an insulating sheet, the manufacturing process is complicated, the production cycle is long, and the cost is high; the second is that the insulating sheet inside the sensor is fragile due to external impact (replacing the upper nozzle of the large bag, etc., etc.), which shortens the life of the sensor; The third is that the coil is made of bare wires, and its lead wire needs to be welded with the armored cable. Since the welding part is in a high temperature area, it is prone to failure and shortens the life of the sensor. Fourth, there is an isolation layer between the transmitting coil and the receiving coil. , takes up a lot of space

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