Flotation product continuous rapid sampling detection device and method

Abstract

The invention discloses a flotation product continuous rapid sampling detection device and method, and belongs to the field of flotation product detection. The device consists of a vacuum filter wheel and a detection device, wherein the vacuum filter wheel comprises a pipeline, a central controller and a filter tank. The filter wheel rotates in ore pulp, and the pipeline is in a vacuum state in a material taking area through accurate setting of the central controller, so that a negative pressure environment is generated. The negative pressure environment enables flotation products in ore pulp to be adsorbed on the filter tank to form a uniform filter cake, and X-ray continuous detection is utilized to carry out real-time detection through a detection point 1 and a detection point 2. Detection data can guide flotation parameter adjustment in time, data is provided for automation and intelligentization of the flotation technology, and the method has wide application prospects in the aspect of online detection of coal slime flotation or other mineral separation.

Description

Technical Field

[0001] The object of the present invention is to provide a continuous and rapid sampling and detection device and method for flotation products, belonging to the field of flotation product detection. Background Art

[0002] Flotation is a beneficiation method widely used in the field of mineral processing. It separates valuable minerals from useless minerals by adding flotation agents to the pulp. The detection of flotation products is a key link to ensure the efficiency of mineral processing and the quality of products. During the flotation process, by accurately detecting various indicators of flotation products, such as ash content, mineral composition, etc., the flotation parameters can be monitored and adjusted in real time, so as to optimize the flotation effect, improve the recovery rate of valuable minerals and the quality of concentrate. In addition, accurate detection data is crucial for predicting and controlling possible problems during the flotation process, which helps to avoid waste of resources and unnecessary increase in production costs. With the development of industrial automation and intelligence, realizing the automation and continuity of flotation product detection can not only improve the efficiency and accuracy of detection, but also reduce the interference of human factors and ensure the stability and reliability of detection results. Therefore, the detection of flotation products is not only related to the production efficiency and economic benefits of mineral processing enterprises, but also an important factor promoting the technological progress and sustainable development of the entire mineral processing industry.

[0003] The traditional flotation process relies on manual sampling and intermittent detection. The process of manual sampling and detection is time-consuming and inefficient, unable to meet the requirements of high efficiency in modern industrial production; intermittent detection may lead to discontinuity of data, thus affecting the accurate control of the flotation process. Due to the long detection cycle, it is impossible to realize the real-time monitoring and adjustment of the flotation process, which limits the optimization of the flotation effect. Frequent manual sampling and detection not only increase the labor cost, but also may cause unnecessary loss of pulp.

[0004] The prior art CN113804679A discloses a gas-liquid-solid three-phase gas dispersion performance detection device and method for flotation equipment, belonging to the field of mineral processing technology. The device includes a host computer, a fixed end, a robotic arm, a sampling cylinder, a light source, a high-speed dynamic camera, a power supply, a microprocessor, a wireless transmitter, a memory, a wireless base station, a power cord and a communication line. Among them, the power supply is connected to the microprocessor, the wireless transmitter and the memory at the back, the light source and the high-speed dynamic camera are connected to the microprocessor, and the microprocessor is connected to the wireless transmitter and the memory. Its structure is complex, and the filter cake needs to be put into a special detection device for detection, and it is impossible to combine the detection with flotation production. Summary of the Invention

[0005] Object of the Invention: Aiming at the deficiencies of the prior art, the present invention provides a continuous and rapid sampling and detection device and method for flotation products, realizing rapid sampling, sample preparation and quality detection of flotation products. While saving the time of manual sampling and sample preparation, accurate real-time detection results can be obtained quickly, which is beneficial to the intelligent control of the flotation process. The present invention can be used for on-line detection of slime flotation or other mineral separation.

[0006] Technical Solution: To achieve the above technical object, the present invention discloses a continuous and rapid sampling and detection device for flotation products, including a continuous and rapid sampling device for flotation products and a detection device. The continuous and rapid sampling device for flotation products includes a vacuum filtration wheel with the lower part disposed in the pulp and imitating the rotation of a waterwheel for flotation sampling. The detection device is two groups of X-ray detectors disposed on the side of the vacuum filtration wheel. The vacuum filtration wheel is connected with a vacuum pumping device and a rotation driving device. The vacuum filtration wheel includes a filtration groove forming the rim and a pipeline forming the spoke structure. A central controller for controlling the rotation speed of the vacuum filtration wheel and the vacuum pumping of the pipeline is provided at the hub of the vacuum filtration wheel. Multiple filter holes communicating with the pipeline are arranged on the filtration groove. When the vacuum filtration wheel rotates in the pulp, a negative pressure environment is generated in the pipeline through the filter holes, so that the flotation products in the pulp can be adsorbed on the filtration groove, forming a layer of flotation product filter cake attached to the filtration groove. There are two groups of X-ray detectors, which are horizontally disposed on the side of the flotation product filter cake adsorbed on the top of the vacuum filtration wheel.

[0007] Further, a scraper 1 and a scraper 2 are respectively provided at the front and rear ends of the rotation of the vacuum filtration wheel. The end of the scraper 1 is at a distance from the filtration groove for detecting the thickness of the flotation product filter cake. During the rotation of the vacuum filtration wheel, the flotation products exceeding the preset thickness of the detected flotation product filter cake are scraped off by the scraper 1. The end of the scraper 2 is close to the filtration groove. During the rotation of the vacuum filtration wheel, the flotation product filter cake in the filtration groove is completely scraped off by the scraper 2 and sent to the conveying device for transportation.

[0008] Further, during the continuous and rapid sampling operation of the flotation products, the vacuum filtration wheel rotates in the clockwise direction and dynamically forms 6 functional sector partitions. The sector between 10:30 and 1:30 is the detection area, the sector between 1:30 and 3:00 is the unloading area, the sector between 3:00 and 4:30 is the blowing area, the sector between 4:30 and 6:00 is the flushing area, the sector between 6:00 and 8:00 is the material taking area, and the sector between 8:00 and 10:30 is the dehydration area. Two groups of X-ray detectors are disposed on the side of the flotation product filter cake in the detection area, and detection points 1 and 2 are formed on the flotation product filter cake by the two groups of X-ray detectors.

[0009] Further, a microwave drying device is provided at the dehydration area of the vacuum filtration wheel to help dehydrate the flotation product filter cake.

[0010] Further, the filtering tank is a concave U-shaped tank. The design of the U-shaped tank enables the material to be evenly adsorbed on the surface of the filtering medium, avoiding the problem of uneven material accumulation that may occur in traditional fan-shaped filter plates.

[0011] Further, the X-ray detector includes a ray emitter, a receiver, and a controller. The emitter and the receiver are respectively arranged at detection point 1 and detection point 2 on the flotation product filter cake. The controller is used to control the detection. Detection point 1 and detection point 2 enable the detector to scan the material from different angles, reduce the error that may be brought by a single detection point, improve the comprehensiveness and accuracy of the detection, and obtain more comprehensive flotation product information.

[0012] A detection method using a continuous rapid sampling detection device for flotation products is as follows: Place the material taking area and the flushing area at the lower part of the vacuum filtering wheel in the rapid sampling device into the pulp. Use the central controller to control the pipeline to generate a vacuum environment through the filter holes arranged in the filtering tank, and at the same time control the rotation of the vacuum filtering wheel. As the vacuum filtering wheel rotates clockwise, the material taking area of the vacuum filtering wheel continuously adsorbs the flotation products from the pulp onto the filtering tank through the negative pressure environment generated by the vacuum state, making the flotation products on the filtering tank gradually thicken. When the thickened flotation products move to scraper 1, scrape off the overly thick flotation products through scraper 1 and produce a compaction effect on the flotation products, so that the thickness of the flotation product filter cake on the filtering tank is uniform and compacted. As the vacuum filtering wheel rotates, the flotation product filter cake with uniform thickness and compaction moves to the dehydration area with the filtering tank, and is dehydrated through microwave drying and the self-weight of water, reducing the moisture in the flotation product filter cake. When the flotation product filter cake moves to the detection area, use two groups of X-ray detectors to analyze the internal structure and composition of the flotation product filter cake at detection point 1 and detection point 2, so as to evaluate the quality of the flotation product filter cake. The flotation product filter cake enters the discharging area, and use scraper 2 to scrape off the flotation product filter cake from the filtering tank, so that the flotation product filter cake smoothly enters the next production link. The blowing area is responsible for removing the residues on the filtering tank, ensuring the cleanliness of the filtering tank, preventing the filter holes from being blocked, and preparing for the next sampling. Finally, the filtering tank enters the flushing area for thorough cleaning. Repeat all the above steps, ensure the continuity and stability of the rotation of the vacuum filtering wheel, realize continuous rapid sampling of flotation products, realize real-time high-speed inspection, effectively improve the quality and efficiency of pulp treatment, and provide reliable data support for the subsequent production process.

[0013] Compared with traditional quality detection devices and methods, the present invention has the following advantages: (1) This device realizes the integration of on-line sampling and detection of minerals, saves the time of manual sampling, sample preparation and chemical analysis, improves the accuracy of mineral quality detection results, and realizes the intelligent production of minerals.

[0014] (2) The U-shaped groove is used to replace the traditional sector-shaped filter plate, so that the material forms a tight filter cake layer on the surface of the filter medium, avoiding inaccurate detection results caused by the accumulation and change of loose materials, and improving the on-line detection accuracy of the material.

[0015] (3) The integration of the dehydration process and the detection process is realized, greatly improving the production efficiency.

[0016] (4) This device has a simple structure, is easy to operate, has a low cost, and meets the needs of industrial production.

[0017] This method detects in a timely, accurate and efficient manner, effectively meeting the high requirements of modern production for speed and accuracy. By reducing manual intervention and improving the automation level, the quality control ability in the mineral processing process can be significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the working principle of the flotation product continuous rapid sampling and detection device according to the embodiment of the present invention; Figure 2 It is a schematic diagram of the structure of the vacuum filter wheel of the present invention; Figure 3 It is a schematic diagram of the adsorption of flotation products in the filter tank of the vacuum filter wheel of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] The following further describes with reference to the embodiments of the present invention: As Figure 1 and Figure 2 shown, the present invention discloses a flotation product continuous rapid sampling and detection device, which consists of a vacuum filter wheel and a detection device. The vacuum filter wheel includes a pipeline, a central controller and a filter tank. The filter wheel rotates in the pulp. Through the precise setting of the central controller, the pipeline forms a vacuum state in the material taking area, thus generating a negative pressure environment. This negative pressure environment enables the flotation products in the pulp to be adsorbed on the filter tank, forming a uniform filter cake, as Figure 3 shown.

[0020] The present invention uses a vacuum filter wheel to rotate in the pulp, and divides the vacuum filter wheel into different areas to continuously adsorb minerals in the pulp to form a filter cake, realizing continuous sampling. As the wheel disc rotates, it passes through the detection area. Ash detection probes are installed on both sides of the detection area. The filter cake is continuously detected by X-rays. After detection, the filter cake is scraped off or blown off, and the filter wheel is washed with water and then enters the pulp to adsorb the pulp. According to this cycle, continuous rapid sampling and detection of flotation products are realized. The detection device is an X-ray detector. When the filter cake passes through the dehydration zone, the excess liquid is quickly pumped out, ensuring the thickness and compactness of the filter cake. After entering the detection zone, the X-ray detector comes into play. Through the penetration of X-rays, the detector can accurately analyze the internal structure and composition of the filter cake, thereby evaluating its quality. In the discharging zone, a scraper is used to scrape the filter cake off the filter tank, enabling it to smoothly enter the next production process.

[0021] This process not only improves production efficiency but also ensures the continuity and accuracy of detection. The blowing zone is responsible for removing the residues on the filter tank, ensuring the cleanliness of the filter tank, preventing the filter holes from being blocked, and preparing for the next sampling. Finally, the filter tank enters the flushing zone for thorough cleaning. The entire system is designed to operate in an uninterrupted cycle, ensuring the continuity and stability of production. Through this efficient sampling and detection method, the quality and efficiency of pulp treatment can be greatly improved, and reliable data support is also provided for the subsequent production process.

[0022] The filter tank uses a U-shaped tank to replace the traditional sector-shaped filter plate. The design of the U-shaped tank enables the material to be evenly adsorbed on the surface of the filter medium, avoiding the problem of uneven material accumulation that may occur with the traditional sector-shaped filter plate. This uniformity is crucial for ensuring the accuracy of the detection results. Due to the geometric shape of the U-shaped tank, the material is less likely to form a loose accumulation during the filtration process, reducing the variation of the material during filtration, thereby improving the stability and reliability of the detection.

[0023] In the detection zone, detection point 1 and detection point 2 are respectively arranged on both sides of the filter tank. Each detection point is equipped with an X-ray detector. The detector includes a ray emitter, a receiver, and a controller, which can realize on-line real-time detection of the material quality and reduce the cost of manual detection. The setting of these two detection points enables the detector to scan the material from different angles, thereby obtaining more comprehensive material information. This multi-angle detection method can effectively reduce the errors that may be brought by a single detection point and improve the comprehensiveness and accuracy of the detection.

[0024] In the dehydration zone, a scraper 1 is specially set. This scraper keeps a certain distance from the filter tank, and its function is to scrape the sample adsorbed on the filter tank flat, ensuring that the sample forms a uniform thickness. This uniformity is crucial for the subsequent dehydration and detection processes.

[0025] The continuous operation of the filter wheel realizes continuous sampling and detection of the flotation product. This continuity significantly improves the efficiency of the entire detection process. After the detection is completed, the material is smoothly sent to the next production process through the automatic discharging function of the scraper, ensuring the smoothness and high efficiency of the entire production process.

Claims

1. A continuous and rapid sampling and detection device for flotation products, characterized in that: It includes a continuous and rapid sampling device and a detection device for flotation products. The continuous and rapid sampling device for flotation products includes a vacuum filter wheel whose lower part is arranged in the ore pulp and simulates the rotation of a waterwheel for flotation sampling. The detection device is two groups of X-ray detectors arranged on the vacuum filter wheel. The vacuum filter wheel is connected with a vacuum pumping device and a rotation drive device. The vacuum filter wheel includes a filter groove constituting a wheel rim and a pipeline constituting a spoke structure. A central controller for controlling the rotation speed of the vacuum filter wheel and the vacuum pumping of the pipeline is arranged at the hub of the vacuum filter wheel. A plurality of filter holes connected with the pipeline are arranged on the filter groove. When the vacuum filter wheel rotates in the ore pulp, the pipeline generates a negative pressure environment through the filter holes, so that the flotation product in the ore pulp can be adsorbed on the filter groove to form a layer of flotation product filter cake attached to the filter groove. There are two groups of X-ray detectors, which are horizontally arranged on the top of the vacuum filter wheel and adsorbed on the side of the flotation product filter cake on the filter groove.

2. The continuous rapid sampling and detection device for flotation products according to claim 1 is characterized in that: A scraper 1 and a scraper 2 are provided at the front and rear ends of the rotating vacuum filter wheel, respectively, wherein the end of the scraper 1 is spaced from the filter tank by a distance sufficient to detect the thickness of the flotation product cake. The vacuum filter wheel scrapes off the flotation product exceeding the preset flotation product cake thickness through the scraper 1 during rotation, and the end of the scraper 2 is close to the filter tank. The empty filter wheel completely scrapes off the flotation product cake in the filter tank through the scraper 2 during rotation and sends it to the conveying device for transportation.

3. The continuous rapid sampling and detection device for flotation products according to claim 1 is characterized in that: The vacuum filter wheel rotates in a clockwise direction during the process of continuous and rapid sampling of flotation products, and dynamically forms 6 functional sector divisions, among which the sector between 10:30 and 1:30 is the detection area, the sector between 1:30 and 3 o'clock is the unloading area, the sector between 3 o'clock and 4:30 is the blowing area, the sector between 4:30 and 6 o'clock is the flushing area, the sector between 6 o'clock and 8 o'clock is the feeding area, and the sector between 8 o'clock and 10:30 is the dehydration area; two groups of X-ray detectors are set on the side of the flotation product filter cake at the detection area, and the two groups of X-ray detectors form detection points 1 and detection points 2 on the flotation product filter cake.

4. The continuous rapid sampling and detection device for flotation products according to claim 3 is characterized in that: A microwave drying device is provided in the dehydration zone of the vacuum filter wheel to help dehydrate the flotation product cake.

5. The continuous rapid sampling and detection device for flotation products according to claim 1, characterized in that: The filter tank is a concave U-shaped tank. The U-shaped tank design allows the material to be evenly adsorbed on the surface of the filter medium, avoiding the problem of uneven material accumulation that may occur in traditional fan-shaped filter plates.

6. The continuous rapid sampling and detection device for flotation products according to claim 5, characterized in that: The X-ray detector includes a ray transmitter, a receiver and a controller, wherein the transmitter and the receiver are respectively arranged at detection point 1 and detection point 2 on the flotation product filter cake, and the controller is used to control the detection; detection point 1 and detection point 2 enable the detector to scan the material from different angles, reduce the error that may be caused by a single detection point, improve the comprehensiveness and accuracy of the detection, and obtain more comprehensive flotation product information.

7. A detection method using the flotation product continuous rapid sampling detection device according to any one of claims 1 to 6, characterized in that: Here are the steps: Place the material taking area and the flushing area of ​​the lower part of the vacuum filter wheel in the rapid sampling device into the ore pulp; The central controller is used to control the pipeline to generate a vacuum environment through the filter holes set in the filter tank, and at the same time control the rotation of the vacuum filter wheel; As the vacuum filter wheel rotates clockwise, the material taking area of ​​the vacuum filter wheel continuously adsorbs the flotation product from the slurry on the filter tank through the negative pressure environment generated by the vacuum state, so that the flotation product on the filter tank gradually thickens. When the thickened flotation product moves to the scraper 1, the scraper 1 scrapes off the excessively thick flotation product and compacts the flotation product, so that the flotation product filter cake on the filter tank is uniform in thickness and compacted. As the vacuum filter wheel rotates, the flotation product cake with uniform thickness and compaction moves with the filter tank to the dehydration area, where it is dehydrated by micro-drying and the dead weight of water to reduce the moisture in the flotation product cake; When the flotation product cake moves to the inspection area, two sets of X-ray detectors are used to analyze the internal structure and composition of the flotation product cake at inspection point 1 and inspection point 2 to evaluate the quality of the flotation product cake; The flotation product cake enters the unloading area, and the scraper 2 is used to scrape the flotation product cake from the filter tank, so that the flotation product cake can smoothly enter the next production link; The blowing area is responsible for removing the residue on the filter tank, ensuring the cleanliness of the filter tank, preventing the filter holes from being blocked, and preparing for the next sampling; Finally, the filter tank enters the rinse area for a thorough cleaning; Repeat all the above steps to ensure the continuity and stability of the vacuum filter wheel rotation, achieve continuous rapid sampling of flotation products, realize real-time and high-speed inspection, effectively improve the quality and efficiency of slurry processing, and provide reliable data support for subsequent production processes.

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