Automatic control system for cyanogen-containing tailing slurry

Abstract

The utility model provides an automatic control system for cyanogen-containing tailing slurry. The system is provided with a PLC control unit connected with an upper computer, an execution system connected with the PLC control unit, and an acquisition unit connected with the PLC control unit. Wherein the execution system comprises an ozone reactor stirring module, a filter press washing module, a filter pressing feeding pump used for conveying a solution in an ozone reactor into a filter press, and a pneumatic valve used for controlling the flow direction of the solution, and the acquisition unit comprises an ozone reactor monitoring module and a filter press monitoring module; in this way, the liquid level, the pressure, the flow of liquid and gas, the aeration degree, the filter pressing state and the like in the cyanogen-containing tailing slurry treatment process can be comprehensively detected in real time, process adjustment is carried out in time, and safety monitoring of the running state of equipment of the whole system is achieved. Therefore, the cyanogen-containing tailing slurry treatment process is highly automatic and reasonable, the labor force is reduced, the working efficiency is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic processing of ore pulp in the gold industry, in particular to an automatic control system for cyanide-containing tailing pulp. Background Art

[0002] According to statistics from the Gold Association, China's gold industry produces about 100 million tons of cyanide slag each year, of which about 30 million tons are suitable for filling. Cyanide slag is a major industrial solid waste in the gold industry, but due to its heavy weight and high transportation costs, its utilization rate is low, which has seriously affected the development of comprehensive utilization of major industrial solid waste in the gold industry. Using cyanide slag as a filling material in goafs can not only reduce the discharge of solid waste in mines, but also effectively control ground pressure and ensure the safe recovery of resources. For this reason, it is urgent to carry out research on key technologies for the ecological disposal and resource utilization of cyanide slag, and develop a proprietary cyanide breaking filter system to reduce the content of pollutants such as cyanide and heavy metals from the perspectives of source reduction and process control, while the corresponding process control system has not yet been developed.

[0003] In view of this, it is necessary to design an automatic control system for cyanide-containing tailings slurry to solve the above problems. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the purpose of the utility model is to provide an automatic control system for cyanide-containing tailings slurry, which realizes unmanned automation technology by controlling the process parameters of cyanide-containing tailings slurry treatment.

[0005] To achieve the above-mentioned purpose, the utility model provides an automatic control system for cyanide-containing tailings slurry, comprising: a host computer, a PLC control unit connected to the host computer, an execution system connected to the PLC control unit, and a collection unit connected to the PLC control unit; the execution system comprises an ozone reactor stirring module, a filter press water washing module, a filter press feed pump for conveying the solution in the ozone reactor to the filter press, and a pneumatic valve for controlling the flow direction of the solution.

[0006] Furthermore, the ozone reactor stirring module includes a liquid stirring module and a gas stirring module.

[0007] Furthermore, the liquid stirring module includes a plurality of stirring motors; and the gas stirring module includes an air compressor.

[0008] Furthermore, the filter press water washing module includes a water washing pump.

[0009] Furthermore, the stirring motor, the air compressor, the water washing pump, the filter press feed pump, and the pneumatic valve are respectively connected to the PLC control unit via electrical signals.

[0010] Furthermore, the collection unit includes an ozone reactor monitoring module and a filter press monitoring module.

[0011] Furthermore, the ozone reactor monitoring module includes a first electromagnetic flowmeter, a first pressure transmitter, a liquid level meter, a vortex flowmeter, and a cyanide online monitor.

[0012] Furthermore, the filter press monitoring module includes a second electromagnetic flowmeter and a second pressure transmitter.

[0013] Furthermore, the first electromagnetic flowmeter, the first pressure transmitter, the liquid level meter, the vortex flowmeter, the cyanide online monitor, the second electromagnetic flowmeter, and the second pressure transmitter are respectively connected to the PLC control unit via electrical signals.

[0014] Furthermore, the host computer includes a display and an industrial computer connected to the display via electrical signals.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides an automatic control system for cyanide tailings slurry, which is provided with a PLC control unit connected to a host computer, an execution system connected to the PLC control unit, and a collection unit connected to the PLC control unit, wherein the execution system comprises an ozone reactor stirring module, a filter press washing module, a filter press feed pump for conveying a solution in the ozone reactor to the filter press, and a pneumatic valve for controlling the flow direction of the solution, and the collection unit comprises an ozone reactor monitoring module and a filter press monitoring module; thus, the liquid level, pressure, flow rate of liquid and gas, aeration degree, filter press state, etc. in the process of treating the cyanide tailings slurry can be comprehensively detected in real time, and the process can be adjusted in time to realize safe monitoring of the operation state of the whole system equipment, so that the treatment process of the cyanide tailings slurry is highly automated and rationalized, the labor force can be reduced, the work efficiency can be improved, and the production cost can be reduced; in addition, the system fault can be predicted and treatment suggestions can be made, so as to provide preliminary preparation for the comprehensive utilization of the cyanide slag in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of an automatic control system for cyanide-containing tailings slurry provided by the utility model.

[0018] Reference numerals

[0019] 1-host computer; 11-display, 12-industrial computer; 2-PLC control unit; 21-programmable controller; 22-AI signal unit; 23-AI / AO signal unit; 24-DI / DO signal unit; 3-execution system; 4-acquisition unit. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme of the present invention are shown in the drawings, while other details that are not closely related to the present invention are omitted. In addition, it should also be noted that the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0022] like Figure 1 As shown, the utility model provides an automatic control system for cyanide-containing tailings slurry, comprising: a host computer 1, a PLC control unit 2 connected to the host computer 1, an execution system 3 connected to the PLC control unit 2, and a collection unit 4 connected to the PLC control unit 2.

[0023] The execution system 3 includes an ozone reactor stirring module, a filter press water washing module, a filter press feed pump for conveying the solution in the ozone reactor to the filter press, and a pneumatic valve for controlling the flow direction of the solution. The ozone reactor stirring module includes a liquid stirring module and a gas stirring module; the liquid stirring module includes a plurality of stirring motors; the gas stirring module includes an air compressor. The filter press water washing module includes a water washing pump. The stirring motor, the air compressor, the water washing pump, the filter press feed pump, and the pneumatic valve are respectively connected to the PLC control unit 2 through electrical signals.

[0024] The acquisition unit 4 includes an ozone reactor monitoring module and a filter press monitoring module; the ozone reactor monitoring module includes a first electromagnetic flowmeter, a first pressure transmitter, a liquid level meter, a vortex flowmeter, and a cyanide online monitor; the filter press monitoring module includes a second electromagnetic flowmeter and a second pressure transmitter. The first electromagnetic flowmeter, the first pressure transmitter, the liquid level meter, the vortex flowmeter, the cyanide online monitor, the second electromagnetic flowmeter, and the second pressure transmitter are connected to the PLC control unit 2 through electrical signals.

[0025] Such a setting can realize real-time comprehensive detection of the liquid level, pressure, liquid and gas flow, aeration degree and filtration status during the treatment process of cyanide tailings slurry, and timely process adjustment to achieve safe monitoring of the operating status of the equipment in the whole system, so as to make the cyanide tailings slurry treatment process highly automated and rationalized, reduce labor, improve work efficiency and reduce production costs.

[0026] The automatic control system for cyanide-containing tailings slurry provided by the utility model is specifically described below in conjunction with the embodiments.

[0027] Example

[0028] like Figure 1 As shown, this embodiment provides an automated control system for cyanide-containing tailings slurry, including: a host computer 1, a PLC control unit 2 connected to the host computer 1, an execution system 3 connected to the PLC control unit 2, and a collection unit 4 connected to the PLC control unit 2.

[0029] The host computer 1 includes a display 11 and an industrial computer 12 connected to the display 11 via electrical signals.

[0030] The PLC control unit 2 includes a programmable controller 21 connected to the industrial computer 12 via Ethernet communication, an AI signal unit 22 connected to the programmable controller 21 via electrical signals, an AI / AO signal unit 23 connected to the AI ​​signal unit 22 via electrical signals, and a DI / DO signal unit 24 connected to the AI / AO signal unit 23 via electrical signals.

[0031] The execution system 3 includes an ozone reactor stirring module, a filter press water washing module, a filter press feed pump for conveying the solution in the ozone reactor to the filter press, and a pneumatic valve for controlling the flow direction of the solution. The ozone reactor stirring module includes a liquid stirring module and a gas stirring module; the liquid stirring module includes a plurality of stirring motors; the gas stirring module includes an air compressor. The filter press water washing module includes a water washing pump. The stirring motor, the air compressor, the water washing pump, the filter press feed pump, and the pneumatic valve are respectively connected to the DI / DO signal unit 24 in the PLC control unit 2 through electrical signals.

[0032] The acquisition unit 4 includes an ozone reactor monitoring module and a filter press monitoring module; the ozone reactor monitoring module includes a first electromagnetic flowmeter, a first pressure transmitter, a liquid level meter, a vortex flowmeter, and a cyanide online monitor; the filter press monitoring module includes a second electromagnetic flowmeter and a second pressure transmitter. The first electromagnetic flowmeter, the first pressure transmitter, the liquid level meter, the cyanide online monitor, the second electromagnetic flowmeter, and the second pressure transmitter are respectively connected to the AI ​​signal unit 22 of the PLC control unit 2 through electrical signals (wherein the first electromagnetic flowmeter, the second electromagnetic flowmeter, the first pressure transmitter, the second pressure transmitter, the liquid level meter, the vortex flowmeter, and the cyanide online monitor are all connected to the safety isolation fence and then electrically connected to the PLC control unit 2); the vortex flowmeter is connected to the AI / AO signal unit 23 of the PLC control unit 2 through electrical signals.

[0033] The ozone reactor is divided into four sections connected in the first place; the four sections in the ozone reactor are all matched with a first electromagnetic flowmeter, a first pressure transmitter stirring motor, a liquid level meter, and a vortex flowmeter; only the fourth section in the ozone reactor is provided with a cyanide online detector.

[0034] The following is a description of the workflow of an automatic control system for cyanide-containing tailings slurry provided by the utility model:

[0035] like Figure 1 As shown, the cyanide tailings slurry automation control system can realize the switching of manual / automatic control mode. In manual mode, the acid water treatment process can be controlled by operating the valve machine side box, or it can be operated through the host computer 1. In automatic mode, it is operated on the host computer 1, and has the function of one-button start and stop.

[0036] The following describes the working process in automatic mode: First, operate the start button through the host computer 1 to start the air compressor in the ozone reactor; then the slurry delivery pump pumps the tailings slurry (pH=7~8) into the ozone reactor at a frequency of 40Hz. At the same time, the stirring motor and the liquid level meter in the ozone reactor are started in linkage, and the pneumatic valve in the first interval of the ozone reactor is adjusted to 50% through the regulating valve to carry out ozone oxidation treatment and adjust the ozone amount; the cyanide online monitor in the fourth interval of the ozone reactor is also turned on, and the cyanide index is measured in real time; the tailings slurry flows from the first interval into the second interval, then to the third interval, and finally to the fourth interval. When the cyanide in the fourth interval After the online monitor detects that the cyanide index is qualified, the treated tailings slurry flows into the filter press buffer tank and is pumped into the filter press through the open filter press feed pump for the filter press process; if the online monitor detects that the cyanide index is unqualified, the treated tailings slurry will flow into the first section of the ozone reactor through the open pneumatic valve to restart the treatment; and after the treated tailings slurry enters the filter press, the water washing pump and the pneumatic valve are turned on to backwash the treated tailings slurry for 10 minutes, and then the valve of the gas pipeline is controlled to blow the treated tailings slurry forward and backward for 5 minutes each, and finally the circulating water washing is performed to forward and backward blow the treated tailings slurry 3 times; wherein each process parameter is set in the host computer 1. After the process is completed, the filter press is unloaded.

[0037] The upper computer 1 screen displays the running process screen and various sensor parameters in real time, completes the setting of process parameters, and assists process personnel in data analysis in the report screen and curve screen. When a device or instrument fails, the upper computer 1 pops up a window to prompt an alarm message.

[0038] In summary, the utility model provides an automated control system for cyanide-containing tailings slurry, which comprises a PLC control unit connected to a host computer, an execution system connected to the PLC control unit, and a collection unit connected to the PLC control unit, wherein the execution system comprises an ozone reactor stirring module, a filter press washing module, a filter press feed pump for conveying the solution in the ozone reactor to the filter press, and a pneumatic valve for controlling the flow direction of the solution, and the collection unit comprises an ozone reactor monitoring module and a filter press monitoring module; in this way, the liquid level, pressure, flow rate of liquid and gas, aeration degree, filter press status, etc. in the process of treating cyanide-containing tailings slurry can be comprehensively detected in real time, and the process can be adjusted in time to realize safe monitoring of the operating status of the whole system equipment, so that the treatment process of cyanide-containing tailings slurry is highly automated and rationalized, labor can be reduced, work efficiency can be improved, and production costs can be reduced; in addition, system failures can be predicted and treatment suggestions can be made, providing preliminary preparations for the comprehensive utilization of cyanide slag in the later stage.

[0039] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model.

Claims

1. An automatic control system for cyanide-containing tailings slurry, characterized in that: include: A host computer, a PLC control unit connected to the host computer, an execution system connected to the PLC control unit, and a collection unit connected to the PLC control unit; the execution system includes an ozone reactor stirring module, a filter press water washing module, a filter press feed pump for conveying the solution in the ozone reactor to the filter press, and a pneumatic valve for controlling the flow direction of the solution.

2. The automatic control system for cyanide-containing tailings slurry according to claim 1, characterized in that: The ozone reactor stirring module comprises a liquid stirring module and a gas stirring module.

3. The automatic control system for cyanide-containing tailings slurry according to claim 2, characterized in that: The liquid stirring module includes a plurality of stirring motors; the gas stirring module includes an air compressor.

4. The automatic control system for cyanide-containing tailings slurry according to claim 3, characterized in that: The filter press water washing module comprises a water washing pump.

5. The automatic control system for cyanide-containing tailings slurry according to claim 4, characterized in that: The stirring motor, the air compressor, the water washing pump, the filter press feed pump, and the pneumatic valve are respectively connected to the PLC control unit through electrical signals.

6. The automatic control system for cyanide-containing tailings slurry according to claim 1, characterized in that: The collection unit includes an ozone reactor monitoring module and a filter press monitoring module.

7. The automatic control system for cyanide-containing tailings slurry according to claim 6, characterized in that: The ozone reactor monitoring module includes a first electromagnetic flowmeter, a first pressure transmitter, a liquid level meter, a vortex flowmeter, and a cyanide online monitor.

8. The automatic control system for cyanide-containing tailings slurry according to claim 7, characterized in that: The filter press monitoring module includes a second electromagnetic flowmeter and a second pressure transmitter.

9. The automatic control system for cyanide-containing tailings slurry according to claim 8, characterized in that: The first electromagnetic flowmeter, the first pressure transmitter, the liquid level meter, the vortex flowmeter, the cyanide online monitor, the second electromagnetic flowmeter, and the second pressure transmitter are respectively connected to the PLC control unit via electrical signals.

10. The automatic control system for cyanide-containing tailings slurry according to claim 1, characterized in that: The host computer includes a display and an industrial computer connected to the display via electrical signals.

Images