Material online moisture measuring device and measuring method thereof

Abstract

The invention discloses a material online moisture measuring device and a measuring method thereof. The measuring device comprises a microwave moisture meter, a material scraping part positioned on the upstream of a microwave receiver, and a material height detecting element positioned between the microwave receiver and the material scraping part; and the microwave moisture meter and the materialheight detecting element are in communication connection with a control computer separately. According to the measuring method, the material scraping part is used for leveling the top end of the material, so that the material thickness difference is reduced, a foundation is laid for the subsequent accurate measurement of the moisture, and conditions are created; the actual height of the material is continuously detected through the material height detecting element; under the condition that the thickness of the whole sintering material on a conveying belt meets the requirements and the thickness is relatively uniform, the microwave moisture meter is started for material moisture measurement, and the measurement under the condition that the material height is relatively low is eliminated; and the moisture value difference measured by the microwave moisture meter is relatively small, the microwave moisture meter is small in measurement value jitter, and the measurement accuracy is greatly improved.

Description

technical field [0001] The invention relates to the technical field of material moisture detection, in particular to an online material moisture measurement device and a measurement method thereof. Background technique [0002] In steel mills, sinter conveyor belts are commonly used to transport powdered iron ore mixtures. During the material transmission process, online moisture measurement is required. Microwave detection is a non-contact rapid detection technology, which can quickly detect the moisture of materials without damaging the materials, so that microwave detection can be applied in the field of moisture measurement. Such as figure 1 As shown, when the microwave moisture meter is used to measure the online moisture of the sintered material, the microwave transmitter 21 of the microwave moisture meter is set between the upper belt 1 and the lower belt of the conveyor belt, and the microwave receiver 22 of the microwave moisture meter is set on the upper belt. 1,...

AI Technical Summary

Problems solved by technology

Since the mineral powder is intermittently discharged from the discharge port of the silo when it is discharged, the mineral powder falls on the conveyor belt in piles, and the shape of each pile is approximately triangular. It is very easy to form a material break point B between them, resulting in uneven thickness of the overall sintered material on the conveyor belt, which brings difficulties to the subsequent material moisture measurement. Due to the inconsistent material thickness, the moisture value measured by the microwave moisture meter There is a difference, which causes the measurement value of the microwave moisture meter to jump, and the measurement accuracy is reduced

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