CN114383664A - A system and method for automatic measurement of flotation bubble load - Google Patents

Abstract

The invention relates to the technical field of beneficiation equipment, in particular to a flotation bubble load automatic measurement system, comprising a sampling device, a liquid level sensor, a vacuum pump, a quality detection sensor, an air volume detection sensor and a display control box. The liquid level sensor is used for The liquid level inside the sampling device is detected, the vacuum pump is used to extract the air in the sampling device, the quality detection sensor is used to measure the mass in the sampling device, and the gas volume detection sensor is used to measure the gas flow rate of the vacuum pump. The liquid level sensor, the gas flow sensor and the mass sensor are respectively electrically connected to the input end of the display control box, and the vacuum pump is electrically connected to the output end of the display control box. The invention can realize accurate sampling, solve the problem of on-line measurement of bubble load parameters, and can meet the development requirements of automation and intelligent equipment. The invention also provides a flotation bubble load measurement method.

Description

A system and method for automatic measurement of flotation bubble load

technical field

The invention relates to the technical field of mineral processing equipment, in particular to a flotation bubble load automatic measurement system and method.

Background technique

Flotation is the most important beneficiation method in the world at present, and 90% of non-ferrous metals and 50% of ferrous metals can be recovered by flotation. The basic process of flotation is that bubbles and ore particles collide, adhere and fall off in the pulp, in which useful minerals adhere to the bubbles, and are brought out of the pulp phase as the bubbles float to form concentrate foam. The amount of minerals carried by the bubbles is the bubble load, which is an important parameter to characterize the ability of the bubbles to carry minerals in the slurry phase. Seaman, Moys, Dyer, Mohsen and others abroad have successively designed bubble load sampling devices or systems with different structural characteristics to obtain mineral samples for analysis, and similar measuring devices have also appeared in my country. However, there are still some problems in the existing measuring devices: First, there are differences between the measurement object and the measurement environment, and the load of the bubbles will be significantly different, which makes it difficult to grasp the sampling amount during the measurement process, and the sample is insufficient when the sampling amount is too small at one time. In order to meet the analysis amount, secondary supplementary sampling will cause a large measurement error; if the amount of one sampling is too large, the workload of sample processing will increase, which will affect the work efficiency. Second, the measured bubble load needs to wait for the entire test. After the process is completed, manual sample preparation and analysis can be performed to obtain the results. The test process cannot know the real-time air bubble load, and cannot guarantee the technical requirements of online test analysis.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an automatic measurement system for flotation bubble load, which can realize accurate sampling, solve the problem of on-line measurement of bubble load parameters, and meet the development requirements of automation and intelligent equipment.

The invention provides an automatic measurement system for flotation bubble load, comprising a sampling device, a liquid level sensor, a vacuum pump, a quality detection sensor, an air volume detection sensor and a display control box. The liquid level sensor is used to detect the liquid level inside the sampling device, The vacuum pump is used to extract the air in the sampling device, the quality detection sensor is used to measure the mass in the sampling device, the air volume detection sensor is used to measure the gas flow rate of the vacuum pump, the liquid level sensor, the gas The flow sensor and the mass sensor are respectively electrically connected to the input end of the display control box, and the vacuum pump is electrically connected to the output end of the display control box.

Preferably, the sampling device includes: a box, a baffle, a sampling tube, an extension tube, and a liquid level quick-adjusting valve, the sampling tube penetrates through the bottom of the sampling device and is connected to an extension tube located outside the sampling device. The flow plate is arranged above the sampling pipe, and the liquid level quick adjustment valve is arranged on the side of the box body.

Preferably, the liquid level sensor, the vacuum pump and the display control box form an automatic liquid level balance system. By comparing the detected liquid level value with the set value, the suction volume of the vacuum pump is controlled to keep the liquid level at the set value.

Preferably, the quality detection sensor, the gas volume detection sensor and the display control box constitute a bubble load parameter detection, calculation and display system, and the bubble load parameters are calculated and displayed in real time through the mass and gas volume parameters.

Preferably, the liquid level sensor for detecting the internal liquid level of the sampling device is arranged on the upper part of the box body, and the upper part of the box body is provided with an exhaust port, the exhaust port and the air inlet of the vacuum pump The air outlet of the vacuum pump is connected to the inlet of the gas flow sensor, and the bottom of the inner side of the sampling device is provided with a bottom plate.

Preferably, the bottom plate is placed obliquely, and a discharge valve is provided at the lowest point of the bottom plate.

Preferably, the front panel of the sampling device is provided with an observation window.

A flotation bubble load measurement method, comprising the following steps:

The quality parameters, gas flow parameters, and liquid level parameters are transmitted to the display control box in real time, and the calculation of each parameter is completed in the display control box, and the results are displayed. At the same time, the display control box sends an adjustment control signal to the vacuum pump to adjust its suction volume. Keep the liquid level at the set value.

Beneficial effects:

(1) The liquid level measurement value is related to the speed adjustment of the vacuum pump. After the liquid level value is set, the measurement process can always maintain a stable height and improve the test accuracy.

(2) Due to the addition of a mass sensor and a gas flow sensor, these two parameter values can be obtained in real time, and the real-time bubble load value can be calculated by using the mass and gas volume parameters, without manual weighing and calculation, and the timeliness is also greatly improved.

(3) The bubble load parameters can be displayed in real time, and can be transmitted to the remote end through the data port, which is conducive to the participation of the bubble load parameters in the optimal control of the entire system.

(4) The bubble load measurement process is automated, reducing the workload of manual labor.

Description of drawings

In order to illustrate the specific embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

Fig. 1 is the overall schematic diagram of the present invention;

2 is a schematic diagram of some components of the present invention;

FIG. 3 is a process schematic diagram of the flotation bubble load measurement method of the present invention.

Description of reference numerals: 1-sampling device, 2-base, 3-mass sensor, 4-liquid level sensor, 5-vacuum pump, 6-gas flow sensor, 7-display control box, 101-box body, 102-lead Flow plate, 103-manhole, 104-sampling pipe, 105-base plate, 106-connector, 107-extension pipe, 108-observation window, 109-discharge valve, 110-liquid level quick adjustment valve, 111-sensor installation Hole, 112 - sensor spare mounting hole, 113 - exhaust port.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc., or The positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, features defined as "first", "second" may expressly or implicitly include one or more of said features. In the description of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be It is directly connected, or it can be indirectly connected through an intermediate medium, and it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Example 1

A bubble load sampling system in the flotation process of the present invention is shown in FIG. . The sampling device 1 is installed on the base 2 , and a mass sensor 3 is also installed between the sampling device 1 and the base 2 . A liquid level sensor 4 is installed above the sampling device. The air inlet of the vacuum pump 5 is connected to the exhaust hole of the sampling device 1 through an air pipe, and the air outlet of the vacuum pump 5 is connected to the inlet of the gas flow sensor 6 through an air pipe. The signals of the mass sensor 3 , the liquid level sensor 4 and the gas flow sensor 6 are transmitted to the display control box 7 through the line. The display control box 7 outputs a control signal to the vacuum pump 5 .

As shown in FIG. 2 , the sampling device 1 takes the box 101 as the main body, the deflector 102 is placed obliquely above the sampling tube 104 , the bottom of the sampling tube 104 passes through the obliquely placed bottom plate 105 , and passes through the connector 106 and the extension tube 107 . connected. At the same time, a discharge valve 109 and a liquid level quick adjustment valve 110 are provided on one side of the box body 101 . A sensor mounting hole 111 , a sensor spare mounting hole 112 and an exhaust hole 113 are provided on the upper end surface of the box body 101 . A manhole 103 is provided on the rear side of the box body 101 .

Working and using process:

During operation, the base 2 and the sampling device 1 are fixed on the test platform, and the sampling device 1 penetrates deep into the ore slurry level through the extension pipe 107 . Inject clean water into the box 101 of the sampling device 1, and control the liquid level at a proper position through the liquid level quick adjustment valve 110. Set the condition parameters and the liquid level value in the sampling device 1 through the display control box 7, open the valve from the exhaust port 113, and start the measurement program at the same time. As the air bubbles enter the sampling device 1 during the measurement process, the liquid level will When a drop occurs, when the liquid level sensor 4 detects that the liquid level is lower than the set value in real time, it will feed back the liquid level information to the display control box 7. By judging the difference between the measured liquid level value and the set liquid level value, the display control box 7 will The rotational speed adjustment signal is input to the vacuum pump 5, and the suction volume of the vacuum pump 5 is adjusted to keep the set value of the liquid level. During the test, the mass signal obtained by the mass sensor 3 and the gas volume signal obtained by the gas flow sensor 6 will be transmitted to the display control box 7 in real time, and the measurement data will be displayed on the display screen. The bubble load value calculated by the parameters, and the result is displayed on the display screen in real time. There is a communication interface in the display control box 7, which can transmit the measurement data to the remote end.

A flotation bubble load measurement method, comprising the following steps:

(1) Set the following numerical input system: ore specific gravity, liquid specific gravity, sampling pipe section, liquid level height setting and maximum sampling weight setting;

(2) Start the system and the vacuum pump runs. At this time, if the liquid level in the sampling device is lower than the height of the set liquid level, the vacuum pump increases the speed; if the liquid level in the sampling device is higher than the height of the set liquid level, the vacuum pump reduces the speed;

(3) Record initial weight, accumulated mass, accumulated gas flow and running time;

(4) Calculate the sampling amount, the bubble load rate and the inflation rate according to the data recorded in step (3), if the accumulated mass is greater than or equal to the maximum sampling weight setting value, the system stops;

(5) Display the results on the display of the display control box: air bubble load rate and inflation rate.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (8)

1. The utility model provides a flotation bubble load automatic measuring system, its characterized in that, includes sampling device, level sensor, vacuum pump, quality detection sensor, tolerance detection sensor and display control case, level sensor is used for detecting the inside liquid level of sampling device, the vacuum pump is used for extracting the air in the sampling device, quality detection sensor is used for measuring the quality size in the sampling device, tolerance detection sensor is used for measuring the gas flow that the vacuum pump was given vent to anger, level sensor gas flow sensor with quality sensor respectively with display control case's input electric connection, the vacuum pump with display control case's output electric connection.

2. The flotation bubble load automatic measurement system of claim 1, wherein the sampling device comprises: box, guide plate, sampling pipe, extension pipe, liquid level quick adjustment valve, the sampling pipe runs through sampling device's bottom and links to each other with the extension pipe that is located the sampling device outside, the guide plate is established the top of sampling pipe, liquid level quick adjustment valve establishes the side of box.

3. The system according to claim 1, wherein the level sensor, the vacuum pump and the display control box form an automatic level balancing system, and the suction amount of the vacuum pump is controlled to maintain the liquid level at a set value by comparing the detected liquid level value with the set value.

4. The automatic measuring system for the flotation bubble load according to claim 1, wherein the quality detection sensor, the air quantity detection sensor and the display control box form a bubble load parameter detection, calculation and display system, and the bubble load parameters are calculated in real time through the quality and air quantity parameters and displayed.

5. The automatic flotation bubble load measuring system according to claim 2, wherein the liquid level sensor for detecting the liquid level inside the sampling device is arranged at the upper part of the box body, the upper part of the box body is provided with an exhaust port, the exhaust port is connected with the air inlet of the vacuum pump, the air outlet of the vacuum pump is connected with the inlet of the gas flow sensor, and the bottom inside the sampling device is provided with a bottom plate.

6. The automatic flotation bubble load measuring system according to claim 5, wherein the bottom plate is placed at an incline, and a discharge valve is provided at the lowest point of the bottom plate.

7. The flotation bubble load automatic measurement system according to claim 1, wherein the front panel of the sampling device is provided with a viewing window.

8. A flotation bubble load measuring method based on the automatic flotation bubble load measuring system according to any one of claims 1 to 7, comprising the steps of:

the quality parameters, the gas flow parameters and the liquid level parameters are transmitted to a display control box in real time, the calculation of each parameter is completed in the display control box, the result is displayed, and meanwhile, the display control box sends out a regulation control signal to the vacuum pump to regulate the air suction amount of the vacuum pump so as to keep the liquid level at a set value.

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