Online soft measurement method for sand return ratio in ore grinding classification process

A technology of sand return ratio and soft measurement, applied in the field of on-line measurement of sand return ratio in the grinding and classification process, can solve the problems of weakening value and long working cycle, and achieve the effect of avoiding long working cycle, ensuring calculation errors and clear calculation steps.

Active Publication Date: 2021-01-08
SANSHANDAO GOLD MINE SHANDONG GOLD MINING LAIZHOU +1
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Problems solved by technology

However, this method can only obtain the value of the sand return ratio at the time of sampling; and the working period from the completion of sampling to the calculation of the results is long, the fastest is about 3-4 days
For production processes that are constantly changing dynamically, this greatly weakens the value of this method for guiding production

Method used

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  • Online soft measurement method for sand return ratio in ore grinding classification process
  • Online soft measurement method for sand return ratio in ore grinding classification process
  • Online soft measurement method for sand return ratio in ore grinding classification process

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Embodiment Construction

[0039] The present invention will be described in detail below in conjunction with the accompanying drawings. However, it should be understood that the accompanying drawings are provided only for better understanding of the present invention, and they should not be construed as limiting the present invention.

[0040] Such as figure 1 As shown, the crushing or grinding process provided by the present invention examines the granularity information data collaborative calculation method comprising the following steps:

[0041] Step 1: Install an instrument that can detect the flow, pressure, and concentration of the hydrocyclone in real time during the production process. The output of the instrument should be data with a calibrated error within an acceptable range; the real-time detection data can be archived in the database;

[0042] Step 2: Complete the soft sensor algorithm parameter calculation according to the following sub-steps:

[0043] 2.1 Sampling to measure ore dens...

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Abstract

The invention discloses an online soft measurement method for a sand return ratio in an ore grinding classification process, which comprises the following steps: firstly, detecting the ore feeding flow, pressure and concentration of a cyclone in real time, and filing real-time detection data into a database; then, completing soft measurement algorithm parameter calculation; selecting a soft measurement calculation period of the sand return ratio; and finally, calculating the sand return ratio on line. The online algorithm only depends on online measurement values of ore feeding flow, pressureand concentration of the cyclone, and online soft measurement of the sand return ratio is achieved; parameters are determined by using an off-line multi-sampling method, and a least square method is used during parameter calculation, so that the minimization of a sand return ratio calculation error is ensured.

Description

technical field [0001] The invention relates to an online soft measurement method for parameters of a technological process, in particular to an online measurement method for the sand return ratio of a grinding and classification process. Background technique [0002] The sand return ratio refers to the ratio of the amount of sand settling in the cyclone to the overflowing dry ore in the grinding and classifying process, and is an important indicator to measure the efficiency of the mill and the classifying efficiency of the cyclone in the grinding and classifying process. If the sand return ratio is too low, it often indicates that the classification efficiency of the cyclone is low, and the overflow is "coarse"; while if the sand return ratio is too high, it often indicates that the mill is overloaded, which not only makes it difficult to meet the grinding particle size, but also causes waste of electric energy. Therefore, in order to make the product particle size of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/28G06F113/08G06F119/14
CPCG06F30/28G06F2113/08G06F2119/14
Inventor 杨天皓段银联王庆凯邹国斌高明生高瑞琢翟成杰孙连喜王晓琨
Owner SANSHANDAO GOLD MINE SHANDONG GOLD MINING LAIZHOU
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