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A Soft Sensing Method for Zinc Ore Grade Based on Process Texture Features

A technology of process texture and soft measurement, applied in the direction of measuring devices, test metals, material inspection products, etc., can solve the problems of high cost, difficulty in online detection of concentrate grade, large delay, etc., and achieve easy online detection, fast calculation speed, The effect of suppressing the overfitting problem

Active Publication Date: 2020-10-02
CENT SOUTH UNIV
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Problems solved by technology

[0004] Aiming at the difficulty of online detection of concentrate grade in the process of zinc flotation, high cost, large delay and insufficient prediction of zinc flotation concentrate grade, this invention proposes a lead-zinc A construction method for the process characteristics of the flotation foam image, and a prediction method for the concentrate grade, which has good prediction accuracy, anti-interference ability and fast operation speed

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  • A Soft Sensing Method for Zinc Ore Grade Based on Process Texture Features
  • A Soft Sensing Method for Zinc Ore Grade Based on Process Texture Features
  • A Soft Sensing Method for Zinc Ore Grade Based on Process Texture Features

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[0032] The following is a more detailed and clear description and explanation of the technical solution adopted in the present invention in conjunction with the accompanying drawings of the present invention. Aiming at the limitation that the traditional method cannot accurately reflect the foam state only by relying on a single frame picture, the invention proposes a time-related process size feature extraction method, and realizes the online detection of zinc concentrate grade by using an improved lifting decision tree model. Apparently, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the relevant art without making creative efforts shall fall within the protection scope of the present invention.

[0033] Such as figure 1 As shown, it is a flow chart of a soft-sensing method for lead-zinc ore grade based...

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Abstract

A method of soft measurement of zinc flotation concentrate grade based on process characteristics. The invention combines expert knowledge and data modeling methods. Firstly, according to the observation focus of field workers when they watch bubbles, a single-frame texture feature based on image statistical characteristics is proposed. To characterize the foam image, according to the characteristics that the on-site workers need to observe the foam state for a period of time to judge the current production state, it is proposed to use the texture sequence to mathematicize the current production state, and a modeling method for the texture sequence is proposed, which reduces the cost of the feature vector dimension. The improved boosting decision tree algorithm is used in the prediction algorithm, which can effectively suppress the over-fitting problem caused by too fast learning and improve the generalization ability. Experiments have proved that the method of the invention is simple in calculation, fast in execution speed, high in prediction accuracy, convenient for on-site actual operation, can guide on-site operation in real time, optimize the production process, and solve the problem of difficulty in online detection of existing zinc ore grades.

Description

technical field [0001] The invention belongs to the technical field of froth flotation, and in particular relates to a method for predicting the grade of zinc flotation concentrate. Background technique [0002] Foam flotation is one of the most important beneficiation methods in zinc smelting today. Flotation is a method of sorting according to the difference in physical and chemical properties of the surface of mineral particles and according to the difference in mineral floatability. The separation process of useful minerals and their symbiotic gangues, through continuous stirring and blowing during the flotation process, a large number of air bubbles with different sizes, shapes, textures and other characteristics are formed in the slurry, and the air bubbles carry mineral particles up to the floating A foam layer is formed on the surface of the groove to realize the separation of minerals and gangue. For such a complex industrial process as froth flotation, due to the ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/2028G06K9/00G06K9/46
CPCG01N33/20G06V20/41G06V10/44G06V10/56
Inventor 唐朝晖牛亚辉曾思迪丁凯庆范影
Owner CENT SOUTH UNIV
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