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Method for online soft measurement of mill power in ore grinding process

A soft measurement and mill technology, applied in special data processing applications, instruments, biological neural network models, etc., can solve the problems of difficult application of semi-autogenous mill power soft measurement, too much noise interference, and difficulty in application, etc. loss, improve economic efficiency, increase throughput and the effect of

Inactive Publication Date: 2017-12-08
DANDONG DONGFANG MEASUREMENT&CONTROL TECHCO
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Problems solved by technology

At present, the main soft measurement method of mill power in China is to soft measure the mill load through the grinding sound and vibration acceleration related information of the mill, and some of them are used for the soft measurement of mill power of ferrous metals represented by coal. Measurement, the former is mainly due to the too much noise interference on site, it is difficult to measure in actual engineering, the latter mainly focuses on the soft measurement of mill power in the coal grinding process of ferrous metals, mainly based on empirical or semi-empirical formulas method, it is almost difficult to apply to the grinding process of non-ferrous metals, especially to the power soft measurement of semi-autogenous mills

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  • Method for online soft measurement of mill power in ore grinding process
  • Method for online soft measurement of mill power in ore grinding process

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Embodiment Construction

[0008] The present invention will be described in further detail below in conjunction with the embodiments shown in the accompanying drawings.

[0009] Soft-sensing technology is to select a group of measurable variables related to the estimated variable, construct a mathematical model with measurable variables as input and estimated variable as output, and use computer software programming to realize the estimation of important process variables. This process includes the selection of auxiliary variables, data collection and processing, soft sensor model establishment and online correction.

[0010] First, the choice of auxiliary variables. The selection of auxiliary variables is generally based on process mechanism analysis (such as material and energy balance relationship). In the measurable variable set, all original auxiliary variables related to the estimated variables are initially selected, and some of these variables may be related variables. On this basis, select an...

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Abstract

The invention discloses a method for online soft measurement of mill power in an ore grinding process, and relates to a mill power measurement method. According to the method, a computer is utilized to acquire real-time process data in the ore grinding process; and through constructing a POS-BP network ore grinding process soft measurement model, an estimated value of the mill power is calculated so as to realize online measurement of the mill power. According to the method, the trained POS-BP soft measurement model is realized in a computer control system by a program; six process parameters are acquired on the spot in real time to serve as inputs of the software measurement model and the mill power serves as an output to realize online estimation of the mill power, so that a mill swelling frequency is decreased, a mill processing amount and an ore grinding granularity quantification rate are improved, lining plate loss and steel ball loss are reduced, and economic benefits of mine enterprises are improved.

Description

technical field [0001] The invention relates to a mill power measurement method, in particular to a semi-autogenous mill power online soft measurement method in the nonferrous metal grinding process. Background technique [0002] The grinding process is widely used in mining, cement, metallurgy, chemical industry, construction and other fields. With the development of human society, the demand and utilization of various mineral resources are also increasing. However, as non-renewable resources, minerals The reserves of rich ore are also gradually depleting, so the processing capacity of various ores, as well as the recovery rate of minerals and the mining of lean ore have become hot spots and difficulties in the field of mineral processing today. The key process of beneficiation operation is ore grinding operation, so in the beneficiation department of various industries, all kinds of mill operations play a very important role. The basic idea of ​​soft measurement is to org...

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Application Information

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IPC IPC(8): G06F19/00G06N3/02
CPCG06N3/02G16Z99/00
Inventor 关长亮张雄王浩李兴华
Owner DANDONG DONGFANG MEASUREMENT&CONTROL TECHCO
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