CN-122006917-A - Control system and control method of bauxite re-selection impurity-removing equipment

CN122006917ACN 122006917 ACN122006917 ACN 122006917ACN-122006917-A

Abstract

The invention discloses a control system and a control method of bauxite re-selection impurity removal equipment, wherein the control system comprises a data acquisition device, a first control device and a second control device, the data acquisition device is used for acquiring operation data of a cyclone and sending the operation data to the first control device, the operation data comprise judgment data and control data, the first control device is used for judging separation effect of bauxite and impurities in the cyclone according to the judgment data, if the separation effect belongs to an abnormal separation effect, initial extension length of an overflow pipe of the cyclone is acquired, target adjustment data are obtained according to the separation effect, the control data and the initial extension length of the overflow pipe, the target adjustment data comprise target extension length, and the second control device is used for adjusting the extension length of the overflow pipe of the cyclone to the target extension length. Solves the problem that the separation effect and the separation efficiency of the low-grade bauxite and the impurities can not be considered.

Inventors

WANG YUEYONG
LI LINYU
WANG DANYANG
SUN XINMIN
YANG WENXIAN
ZHAO HAOLIN
WANG DU
ZHANG BAOWEI
GUO XIN
SUN TIECHENG
LIU QIAOYUN
YAN FENG
CHEN XIANGQIAN
Cang Xiangyu
WANG YONGPING

Assignees

中铝郑州有色金属研究院有限公司
中铝中州铝业有限公司

Dates

Publication Date: 20260512
Application Date: 20251211

Claims (11)

1. A control system for bauxite re-selection and impurity removal equipment, comprising: the device comprises a data acquisition device, a first control device and a second control device; The data acquisition device, the first control device and the second control device are electrically connected in sequence; the data acquisition device is used for acquiring the operation data of the cyclone and sending the operation data to the first control device, wherein the operation data comprises judgment data and control data; The first control device is configured to determine, according to the determination data, a separation effect of bauxite and impurities in the cyclone, and if the separation effect belongs to an abnormal separation effect, obtain an initial extension length of an overflow pipe of the cyclone, obtain target adjustment data according to the separation effect, the control data, and the initial extension length of the overflow pipe, and send the target adjustment data to the second control device, where the target adjustment data includes a target extension length; The second control device is used for adjusting the extending length of the overflow pipe of the cyclone to the target extending length.
2. The control system of bauxite re-selection and impurity removal equipment as set forth in claim 1, wherein said judgment data includes an initial pulp density and an initial pressure of said cyclone underflow port and an initial pulp density and an initial pressure of said cyclone overflow port, and said control data includes an initial pulp density of said inlet, an initial pulp density and an initial pressure of said inlet.
3. The control system of bauxite re-selection and impurity removal equipment of claim 2, wherein said data collection device comprises: The density acquisition assemblies are electrically connected with the first control device and are configured to be arranged at the inlet, the underflow opening and the overflow opening of the cyclone respectively to obtain the initial pulp density and the initial pulp density of the inlet of the cyclone, the initial pulp density of the underflow opening of the cyclone and the initial pulp density of the overflow opening of the cyclone; the system comprises a first control device, a plurality of pressure acquisition assemblies, a cyclone inlet, a bottom flow port and an overflow port, wherein each pressure acquisition assembly is electrically connected with the first control device, and the plurality of density acquisition assemblies are configured to be respectively arranged at the cyclone inlet, the bottom flow port and the overflow port to acquire the initial pressure of the cyclone inlet, the initial pressure of the cyclone bottom flow port and the initial pressure of the cyclone overflow port.
4. The control system of bauxite re-selection and impurity removal equipment as set forth in claim 2, wherein determining the separation effect of bauxite from impurities in said cyclone based on said determination data comprises: when the initial pulp density of the bottom flow port is smaller than a first pulp density threshold value or the initial pressure of the bottom flow port is smaller than the first pulp pressure threshold value, judging that the separation effect is a first separation effect; judging that the separation effect is a second separation effect when the initial ore pulp density of the overflow port is larger than a second ore pulp density threshold value or the initial pressure of the overflow port is smaller than a second ore pulp pressure threshold value; the abnormal separation effect includes the first separation effect and the second separation effect.
5. The control system of bauxite re-selection and impurity removal equipment of claim 4, wherein obtaining said target adjustment data based on said separation effect, said control data and an initial extension length of said overflow pipe comprises: When the separation effect is the first separation effect, inputting the initial pulp density of the inlet, the initial pulp density, the initial pressure of the inlet and the initial extension length of the overflow pipe of the cyclone into a pre-configured prediction model to obtain first initial prediction data, wherein the first initial prediction data comprises the first initial prediction density of the pulp of the underflow opening; based on the initial extension length and the first preset step, obtaining h first reference extension lengths, taking the initial pressure as a first reference pressure, and executing a first step, wherein h is a positive integer, and the first step comprises: Respectively inputting the first reference extension length, the initial pulp density of the inlet and the first reference pressure into the prediction model for each first reference extension length to obtain h groups of first reference prediction data, wherein each group of first reference prediction data corresponds to one first reference extension length, and each group of first reference prediction data comprises the first reference prediction density of pulp of the bottom flow port; Determining a group of first reference prediction data with the maximum first reference prediction density from the h groups of first reference prediction data; and if the maximum first reference predicted density is greater than the first initial predicted density of the ore pulp of the bottom flow port, determining a first reference extension length corresponding to a group of first reference predicted data with the maximum first reference predicted density as the first target extension length.
6. The bauxite re-selection and impurity removal equipment control system of claim 5, wherein said target regulation data further comprises a target pressure of said cyclone inlet, said second control means further for regulating said cyclone inlet pressure to said target pressure, said first step further comprising: If the maximum first reference predicted density is smaller than or equal to the first initial predicted density of the pulp of the bottom flow port, increasing the first reference pressure based on a second preset step, repeating the first step based on the increased first reference pressure until the maximum first reference predicted density is greater than the initial predicted density of the pulp of the bottom flow port, determining a first reference extension length corresponding to a set of first reference predicted data with the maximum first reference predicted density as the first target extension length, and determining the current first reference pressure as the target pressure.
7. The control system of bauxite re-selection and impurity removal equipment of claim 4, wherein said target adjustment data is obtained based on said separation effect, said control data and an initial extension length of said overflow pipe, further comprising: When the separation effect is the second separation effect, inputting the initial pulp density of the inlet, the initial pulp density, the initial pressure of the inlet and the initial extension length of the overflow pipe of the cyclone into a pre-configured prediction model to obtain second initial prediction data, wherein the second initial prediction data comprises the second initial prediction density of the pulp of the overflow port; Based on the initial extension length and the third preset step, j second reference extension lengths are obtained, the initial pressure is used as a second reference pressure, a second step is executed, j is a positive integer, and the second step comprises: Inputting the second reference extension length, the initial pulp density of the inlet and the second reference pressure into the prediction model for each second reference extension length to obtain j groups of second reference prediction data, wherein each group of second reference prediction data corresponds to one second reference extension length, and each group of second reference prediction data comprises the second reference prediction density of the pulp of the overflow port; Determining a group of second reference prediction data with the minimum second reference prediction density from the j groups of second reference prediction data; And if the minimum second reference predicted density is greater than the second initial predicted density of the ore pulp of the overflow port, determining a second reference extension length corresponding to a group of second reference predicted data with the minimum second reference predicted density as the second target extension length.
8. The bauxite re-selection and impurity removal equipment control system of claim 7, wherein said target regulation data further comprises a target pressure of said cyclone inlet, said second control means further for regulating said cyclone inlet pressure to said target pressure, said second step further comprising: If the minimum second reference predicted density is smaller than or equal to the second initial predicted density of the ore pulp of the overflow port, increasing the second reference pressure based on a fourth preset step, repeating the second step based on the increased second reference pressure until the minimum second reference predicted density is larger than the second initial predicted density of the ore pulp of the overflow port, determining a second reference extension length corresponding to a set of second reference predicted data with the minimum second reference predicted density as the second target extension length, and determining the current second reference pressure as the target pressure.
9. The control system of bauxite re-selection and impurity removal equipment as claimed in any one of claims 5 to 8, wherein the prediction model is obtained by: Acquiring training data, wherein the training data comprises an input data set and an output data set, the input data set comprises a plurality of groups of input sample data, the output data set comprises label data corresponding to each group of input sample data, each group of input sample data comprises the extending length of an overflow pipe of the cyclone, the pulp density, the concentration and the inlet pressure of an inlet of the cyclone, and the label data comprises the pressure of an underflow outlet and an overflow outlet of the cyclone, the pulp concentration and the pulp density; and training a machine learning model constructed in advance based on the training data to obtain the prediction model.
10. The control system of bauxite re-selection and impurity removal equipment of claim 9, wherein said obtaining training data comprises: obtaining a plurality of sample extending lengths of an overflow pipe of the cyclone and structural parameters of the cyclone; Respectively constructing a three-dimensional model of the cyclone based on the sample extending length and the structural parameters aiming at each sample extending length, and constructing an Euler-Euler multiphase flow particle simulation model corresponding to the sample extending length based on the three-dimensional model and preset boundary conditions; Obtaining a plurality of groups of sample pulp densities, a plurality of groups of sample pulp densities and a plurality of groups of sample pressures at the inlet of the cyclone, obtaining a plurality of groups of input sample data based on the plurality of groups of sample stretching lengths, the plurality of groups of sample pulp densities and the plurality of groups of sample pressures, inputting the sample pulp densities, the sample pulp densities and the sample pressures in the input sample data into Euler-Euler multiphase flow particle simulation models corresponding to the sample stretching lengths for each group of input sample data, and solving to obtain the label data corresponding to the input sample data.
11. A control method of bauxite re-selection and impurity removal equipment, characterized by being applied to the control system of any one of claims 1 to 10, the method comprising: the data acquisition device acquires operation data of the cyclone and sends the operation data to the first control device, wherein the operation data comprises judgment data and control data; The first control device judges the separation effect of bauxite and impurities in the cyclone according to the judging data, if the separation effect belongs to an abnormal separation effect, the first control device obtains the initial extending length of an overflow pipe of the cyclone, obtains target adjustment data according to the separation effect, the control data and the initial extending length of the overflow pipe, and sends the target adjustment data to the second control device, wherein the target adjustment data comprises the target extending length; the second control device adjusts the extending length of the overflow pipe of the cyclone to the target extending length.

Description

Control system and control method of bauxite re-selection impurity-removing equipment Technical Field The invention relates to the technical field of bauxite resource treatment, in particular to a control system and a control method of bauxite reselection impurity removal equipment. Background Along with the development of mineral resources in a large quantity, the increasing depletion of ores and the improvement of environmental protection requirements, in order to alleviate the environmental and energy problems generally faced by the development and utilization of low-grade mineral resources, an ore preselection process is increasingly valued by the mineral separation industry, and the conventional impurity removal technology at present is mainly a flotation desilication technology, and the conventional impurity removal technology is required to be treated by adopting a crushing-grinding-flotation-sedimentation-filter pressing process, so that the processing cost is high, and the economic burden of ores for alumina enterprises is increased. The patent with publication number CN120169545A adopts a crushing-rod mill grading-heavy medium roughing-chute scavenging process, so that the comprehensive recovery rate of aluminum concentrate can be effectively improved, and the aluminum-silicon ratio of tailings can be reduced. In the process, the heavy medium roughing process utilizes the dead weight of the materials in the cyclone to drive, and aluminum concentrate with high density, such as boehmite with the density of 3.01-3.06 g/cm 3, hydraulic bauxite with the density of 3.3-3.5 g/cm 3, and impurities with low density, such as illite with the density of 2.6-2.9 gcm 3 and kaolin with the density of 2.60-2.63 g/cm 3, flow out from the overflow port of the heavy medium cyclone due to the high centrifugal force, so that high-grade aluminum concentrate can be rapidly separated. Because the energy consumption of the cyclone is extremely low, the aluminum concentrate separated by the cyclone is more, the processing capacity of the spiral chute can be reduced, and the energy consumption is reduced. Therefore, the treatment capacity and the separation efficiency of the gravity separation equipment cyclone in the gravity medium roughing process are improved, and the bauxite separation energy consumption can be greatly reduced. However, the heavy medium cyclone in the market at present is mainly used in industries such as coal, heavy metal beneficiation and the like, and has the problems of coarse grading granularity, limited types of separated minerals, low separation efficiency and the like. Compared with the heavy metal ore gravity separation (the density difference is larger than 0.7 g/cm 3), the bauxite ore separation has the characteristics of fine separation size and relatively small density difference (smaller than 0.4 g/cm 3) of different minerals, the fluctuation of impurity components is large, the applicability of the conventional heavy medium cyclone to the heavy metal ore gravity separation impurity removal is seriously insufficient, and particularly, the separation efficiency and the separation effect are difficult to be compatible. Disclosure of Invention The invention solves the defect that the separation efficiency and the separation effect of the conventional heavy medium cyclone for the heavy separation and impurity removal of low-grade bauxite cannot be considered. The invention provides a control system of bauxite re-selection impurity removal equipment, which comprises: the device comprises a data acquisition device, a first control device and a second control device; The data acquisition device, the first control device and the second control device are electrically connected in sequence; the data acquisition device is used for acquiring the operation data of the cyclone and sending the operation data to the first control device, wherein the operation data comprises judgment data and control data; The first control device is configured to determine, according to the determination data, a separation effect of bauxite and impurities in the cyclone, and if the separation effect belongs to an abnormal separation effect, obtain an initial extension length of an overflow pipe of the cyclone, obtain target adjustment data according to the separation effect, the control data, and the initial extension length of the overflow pipe, and send the target adjustment data to the second control device, where the target adjustment data includes a target extension length; The second control device is used for adjusting the extending length of the overflow pipe of the cyclone to the target extending length. Preferably, the judging data comprise initial pulp density and initial pressure of the cyclone bottom flow port and initial pulp density and initial pressure of the cyclone overflow port, and the control data comprise initial pulp density and initial pressure of the cyclone inlet. Preferably, the data acquisitio