Flotation tailing ash content on-line detection device based on photoelectric effect

Abstract

The invention discloses a photoelectric effect-based flotation tailing ash content online detection device. The device comprises a test probe shell and a signal processing box, a photoelectric sensor and a light source are fixedly arranged at the central position in the test probe shell, and a wear-resistant quartz glass diaphragm is fixedly arranged at the bottom end in the test probe shell; a wiring terminal is arranged at the top of the test probe shell, a control circuit board is arranged in the signal processing box, a display screen is arranged on a box body of the signal processing box, and the photoelectric sensor is electrically connected with the display screen sequentially through the wiring terminal and the control circuit board The device performs scientific, timely and accurate on-line detection on the ash content of the ore pulp in the flotation tailing ore pulp flow, effectively solves the defects of poor real-time performance, high labor intensity, tedious working procedures, large errors and the like of a conventional ash content detection method. The device provides important technical support for improving the technical level of coal slime flotation production in China and promoting the development of intelligent flotation technology.

Description

technical field [0001] The invention belongs to the technical field of flotation tailing coal ash detection, in particular to an on-line detection device for flotation tailing coal ash based on photoelectric effect. Background technique [0002] Flotation is a widely used method for sorting fine-grained coal slime. The ash content of flotation tailings is an important indicator for judging the effect of flotation process. The loss in the coal and the ash content of the flotation tailings, and then make adjustments to the flotation process. In the flotation automation control process, as an important control target and feedback information, the ash content of the flotation tailings is an important decision-making basis for the closed-loop intelligent control of the flotation process. At present, there is no one that can timely and accurately detect the ash content of the flotation tailings. On-line detection methods and instruments have become the bottleneck restricting the ...

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Problems solved by technology

[0003] The invention patent CN201710706422.4 provides an online detection device and detection method for pulp ash content. The method disclosed in this patent is to sample and filter the flotation tailings separately, and then use X-ray detection components to detect the ash content of the sample on the filter cake. This off-line sampling and detection method has a complicated process and requires a certain period of time for sample collection, processing and detection. The cost is high, and there will be radiation safety hazards if the shielding is not done properly

Invention patent CN201811038931.5 provides an image-based detection method for flotation tailings ash, concentration, and coarse particle content. The method disclosed in this patent is also an offline sampling detection method, which requires split sampling, sample container cleaning, and sample injection. , and then use a camera to collect images, and obtain the ash content of flotation tailings through image grayscale analysis and mathematical models; this method has defects such as insufficient sampling representativeness, low accuracy of grayscale identification of flotation tailings, and complicated calculation process

The methods and devices disclosed in the above two patents are both off-line sampling and detection methods, which have a certain time period lag, complex device systems, low precision and safety hazards such as radiation radiation.

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