A kind of soft measurement method of mud layer height in red mud settlement process

A technology of soft measurement and red mud, which is applied in the direction of measuring devices, neural learning methods, biological neural network models, etc., can solve the problems of high price, large amount of on-site instrument maintenance, and lack of wide application

Inactive Publication Date: 2011-12-21
NORTHEASTERN UNIV ENG & RES INST CO LTD
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Problems solved by technology

[0003] At present, alumina plants mostly use manual analysis and on-site instrument detection to measure the height of the mud layer in the settling tank: the manual analysi

Method used

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  • A kind of soft measurement method of mud layer height in red mud settlement process
  • A kind of soft measurement method of mud layer height in red mud settlement process
  • A kind of soft measurement method of mud layer height in red mud settlement process

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Embodiment Construction

[0050] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0051] A kind of soft measuring method of mud layer height in red mud settlement process of the present invention comprises the following steps, such as figure 1 Shown:

[0052] Step 1: Data collection. According to the process data records of an aluminum factory in Henan at the end of 2008, a relatively complete set of 130 sets of data were collected: the amount of flocculant added to the settling tank f 1 , settling tank temperature T 1 , pressure cooker temperature T 2 , Settling tank bottom outflow material f 2 and the amount of diluted solution in the settling tank f 3 ,As shown in Table 1:

[0053]

[0054] Table 1 is the comparison table of neural network model prediction

[0055] The measurement of the above data is realized by using the electromagnetic flowmeter with the function of measuring flow and temperature and the armored platinum the...

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Abstract

A soft measurement method for the height of the mud layer in the red mud settlement process belongs to the field of automatic measurement technology, comprising the following steps: establishing a mapping with the mud layer height (L) of the settlement tank by collecting the data of the red mud settlement process under different working conditions; Standardize the collected red mud settlement process data and eliminate abnormal data; standardize the data and use function transformation to map its value to the value interval of [0.1, 0.9]; substitute the data processed in step 3 into the neural network, The weight coefficients are determined through the training of the neural network; the data of the red mud settlement process is collected in real time, and the collected data is processed by steps 2-3, and brought into the trained neural network in step 4 to realize the settlement of the red mud The measurement of the height of the mud layer in the process; the real-time online measurement of the height of the mud layer is realized, which overcomes the shortcomings of the current method, which is large in maintenance, expensive, and not widely used.

Description

technical field [0001] The invention belongs to the technical field of automatic measurement and relates to a soft measurement method for the mud layer height in the red mud settlement process. Background technique [0002] The excellent properties of metal aluminum promote the rapid development of alumina production in the world. In the process of alumina production, the red mud settlement process is an extremely critical process. Among them, the mud layer height of the settling tank is the whole red mud settlement process. The core technical index of the process, it not only reflects the quality of the settling tank settling performance, but also has important significance for the subsequent production of alumina. Therefore, detecting the height of the settling tank mud layer is an important task in the alumina production process. [0003] At present, alumina plants mostly use manual analysis and on-site instrument detection to measure the height of the mud layer in the se...

Claims

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Application Information

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IPC IPC(8): G06N3/08G01B21/02
Inventor 王金龙魏迎春孙波张向民余明正
Owner NORTHEASTERN UNIV ENG & RES INST CO LTD
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