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A zinc ore grade soft measurement method based on a procedural texture characteristic

A process texture and soft measurement technology, which is applied in the direction of testing metals, material inspection products, instruments, etc., can solve the problems of high cost, large delay, and difficulty in online detection of concentrate grade, so as to facilitate online detection and suppress overfitting problems , the effect of fast operation speed

Active Publication Date: 2018-12-04
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

Method used

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  • A zinc ore grade soft measurement method based on a procedural texture characteristic
  • A zinc ore grade soft measurement method based on a procedural texture characteristic
  • A zinc ore grade soft measurement method based on a procedural texture characteristic

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Embodiment Construction

[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 zinc flotation concentrate grade soft measurement method based on a procedural texture characteristic is provided. The method combines expert knowledge and a data modeling process. That a foam imageis represented by a single-frame texture characteristic based on image statistical characteristics is put forward according to key points of foam observation by on-site workers; digitalization of thecurrent production state with a texture sequence is put forward according to a characteristic that the current production state is determined by observation of the foam state in a period of time by on-site workers; and a modeling method for the texture sequence is provided to reduce the dimensionality of a feature vector. An improved boosting decision tree algorithm is adopted in a prediction algorithm to effectively inhibit an overfitting problem caused by too-fast learning, and improving generalization capability. Experiments prove that the method is simple in calculation, high in implementation speed and high in prediction accuracy, actual operation on site is convenient so as to direct spot operation in real time to optimize a production process, and a problem that on-line detection of the grade of zinc ore is difficult is solved.

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 Applications(China)
IPC IPC(8): G01N33/20G06K9/00G06K9/46
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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