Online ash detection system for clean coal flotation, and online detection method implemented by system

Abstract

The invention provides an online ash detection system for clean coal flotation, and an online detection method implemented by the system. The online detection system comprises a hardware detection system, and a software detection program adopted by the hardware detection system. The online detection method comprises the following steps: carrying out denoising enhancement and segmentation processing on froth images to obtain froth segmentation images, extracting mean values and other texture feature statistic data, carrying out correlation analysis, establishing a neural network model, determining the number of hidden layer nodes, carrying out clean coal froth ash classification identification, and outputting results to a program interface. The system has the advantages of small occupied area, high simplicity in the design structure, economization and environmental friendliness; and through the method, online detection for the clean coal flotation can be achieved, and the dosage can beadjusted in time, so that the reagent consumption is reduced, and the clean coal recovery rate is improved.

Description

technical field [0001] The invention relates to an online detection method for flotation clean coal ash, in particular to an online monitoring method for flotation clean coal ash in a coal preparation plant. Background technique [0002] Flotation is a widely used method of coal preparation in mineral processing. Mineralized bubbles are necessary in the process. It involves extremely complex physical and chemical reaction processes. Mineralized bubbles are three-dimensional complex structures composed of gas, solid and liquid phases. body, including visual information such as bubble size, color, speed, etc., and flotation status and indicators. For many years, coal preparation plants have mainly relied on production workers to observe the bubbles to adjust operations, but the bubble state is random, and different operators have different perceptions of the bubbles. There is no uniform and quantitative standard for judging the state, which leads to the subjectivity and random...

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Problems solved by technology

[0002] Flotation is a widely used method of coal preparation in mineral processing. Mineralized bubbles are necessary in the process. It involves extremely complex physical and chemical reaction processes. Mineralized bubbles are three-dimensional complex structures composed of gas, solid and liquid phases. body, including visual information such as bubble size, color, speed, etc., and flotation status and indicators. For many years, coal preparation plants have mainly relied on production workers to observe the bubbles to adjust operations, but the bubble state is random, and different operators have different perceptions of the bubbles. There is no uniform and quantitative standard for judging the state, which leads to the subjectivity and randomness of the operation, making it difficult for the flotation process to be in the best operating state, often causing problems such as unstable production process and waste of mineral resources. With the automatic control, computer With the development of technologies such as images, it has become possible to research and develop flotation foam vision devices, use image information to quantitatively reflect the state of the flotation process, and provide reference operation information. The inevitable development direction of the factory has important practical significance and broad application prospects

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