A real-time detection system and method for solid content of ore pulp

Abstract

The present invention relates to the technical field of ore pulp solid content detection, and specifically to a real-time detection system and method for ore pulp solid content. A real-time detection system for ore pulp solid content, comprising a column body, an anti-bubble overflow device and an auxiliary pressure detection unit, wherein the column body is composed of a column major diameter and a column minor diameter; the column minor diameter is provided with a slurry inlet and a compressed gas inlet connected to the interior thereof, and the column major diameter is provided with a slurry discharge port connected to the interior thereof; the anti-bubble overflow device is arranged at the upper part of the column minor diameter and is connected to the interior of the column minor diameter, and the anti-bubble overflow device is provided with a liquid level detection unit; the auxiliary pressure detection unit is arranged at the lower part of the column minor diameter and is connected to the interior of the column minor diameter, and the auxiliary pressure detection unit is provided with a pressure sensor.

Description

Technical Field

[0001] The present invention relates to the technical field of ore pulp solid content detection, and in particular to a ore pulp solid content real-time detection system and detection method. Background Art

[0002] Solid content detection of slurry is an important technology in industrial process control and is widely used in mining, papermaking, pharmaceutical, food processing and chemical industries. Solid content of slurry refers to the proportion of solid particles in slurry, which directly affects the quality of products and process efficiency. For example, in mining, the solid content of slurry determines the efficiency and cost of the mineral processing process; in the papermaking industry, the solid content of pulp affects the quality and production speed of paper.

[0003] Traditional methods for detecting solid content in slurry mainly include gravity sedimentation method, dry weight percentage method and specific gravity method. The dry weight percentage method is more accurate in determining concentration, but the slurry needs to be dried, which takes a long time and cannot meet the timely requirements of on-site adjustment of process flow. Although these methods can meet the detection requirements to a certain extent, they have some shortcomings. First, traditional methods often require complex sample processing processes, making it difficult to achieve online real-time detection. Second, these methods usually rely on manual operation, which can easily introduce human errors and affect the accuracy of the test results. In addition, traditional detection methods often show low detection efficiency and reliability when faced with slurries with high solid content and high viscosity.

[0004] With the continuous development of industrial automation and intelligence, higher requirements are placed on slurry solid content detection technology. Modern industrial processes require a technology that can quickly, accurately, and online in real time detect slurry solid content to improve production efficiency, optimize process control, and reduce production costs. In view of the shortcomings of existing technologies, a new type of slurry solid content detection device and method is urgently needed to overcome the defects of traditional methods and provide a more efficient and reliable detection solution. Summary of the invention

[0005] Based on this, this patent aims to provide an improved slurry solid content detection technology, which can achieve efficient, accurate, online and real-time detection of slurry solid content through innovative detection principles and equipment design to meet the needs of modern industrial production.

[0006] A real-time detection system for slurry solid content, comprising a column body, wherein the column body is composed of a column major diameter and a column minor diameter; the column minor diameter is provided with a slurry inlet connected to the interior thereof, and the column major diameter is provided with a slurry discharge outlet and a compressed gas inlet connected to the interior thereof;

[0007] Also included is an anti-bubble overflow device, which is arranged at the upper part of the column diameter and communicated with the interior of the column diameter, and a liquid level detection unit is provided on the anti-bubble overflow device;

[0008] The auxiliary pressure detection part is arranged at the lower part of the minor diameter of the column and communicated with the interior of the minor diameter of the column. The auxiliary pressure detection part is provided with a pressure sensor.

[0009] Furthermore, the diameter of the major diameter of the column is greater than the diameter of the minor diameter of the column.

[0010] Furthermore, an inclined plate is provided inside the major diameter of the column, the inclined plate is arranged at an acute angle to the bottom wall of the major diameter of the column, and is fixedly connected to the inner wall of the major diameter of the column, and the slurry discharge port is located above the inclined plate.

[0011] Furthermore, the compressed gas inlet is externally connected to a compressed gas delivery and compressed gas metering control device, a bubble dispersion device is provided inside the major diameter of the column, the bubble dispersion device has an air inlet and an air outlet, and the air inlet of the bubble dispersion device is connected to the compressed gas inlet.

[0012] Further, the anti-bubble overflow device includes a slurry interception part and a liquid level detection part;

[0013] The slurry interception part is communicated with the interior of the column minor diameter, the slurry interception part has an inclined wall, the inclined wall of the slurry interception part is set at an acute angle with the column minor diameter, an interception baffle and a plurality of first ribs are arranged in the slurry interception part, the plurality of first ribs are all set at an acute angle with the side wall of the column minor diameter, and are sequentially spaced and distributed along the inclination direction of the inclined wall of the slurry interception part, there is a gap between the first rib and the inclined wall of the slurry interception part, the interception baffle is vertically arranged, and its bottom end is connected and fixed to the first rib close to the column minor diameter;

[0014] The liquid level detection part is arranged at the upper end of the slurry retention part, and is communicated with the interior of the slurry retention part. A liquid inlet is arranged at the lower part of the liquid level detection part, and a liquid level detection unit and an air inlet are arranged at the upper end. The liquid level detection unit is used to detect the height of the liquid position in the liquid level detection part.

[0015] Furthermore, the lengths of the first ribs gradually increase in a direction approaching the liquid level detection portion, and an angle between the first ribs and the minor diameter of the column is 30° to 80°.

[0016] Furthermore, the side of the auxiliary pressure detecting part away from the column minor diameter is set at an acute angle to the column minor diameter, and a second rib is provided inside the auxiliary pressure detecting part. The second rib is set at an acute angle to the side wall of the column minor diameter, and there is a gap between the second rib and the inner side wall of the auxiliary pressure detecting part. A pressure sensor is provided at the upper end of the auxiliary pressure detecting part.

[0017] Furthermore, the angle between the side of the auxiliary pressure detection portion away from the minor diameter of the column and the minor diameter of the column is 30° to 80°, and the angle between the second rib and the minor diameter of the column is 30° to 80°.

[0018] A method for detecting solid content of ore pulp, using the above-mentioned real-time detection system for solid content of ore pulp for detection, mainly comprises the following steps:

[0019] S1. The calculation formula for the solid content of the slurry in the small diameter of the column is as follows:

[0020]

[0021] Where k is the mass concentration percentage of the slurry, ρ 固 is the density of solid matter in the slurry, ρ 液 is the density of the liquid substance in the slurry, P is the pressure at the bottom of the column, h is the height between the liquid level detected by the liquid level detection unit and the detection port of the pressure sensor, M 气 is the amount of gas injected into the cylinder's small diameter from the compressed gas inlet, ρ 气 is the density of the compressed gas, v is the rising velocity of the bubble in the cylinder, and r is the radius of the cylinder's minor diameter.

[0022] S2. Obtain the density value of the solid matter in the slurry, the density value of the liquid matter in the slurry, the pressure value at the bottom of the column diameter, the height value between the liquid level detected by the liquid level detection unit and the detection port of the pressure sensor, the gas volume of the compressed gas and the rising speed of the bubbles in sequence, and substitute them into equations (1) and (2) in S1 to measure the solid content value of the slurry.

[0023] The beneficial effects brought by the technical solution provided by the present invention are:

[0024] (1) The real-time detection system for slurry solid content of the present invention can realize the detection of the slurry solid content in the column body, and has the advantages of accurate detection results, high detection efficiency and high intelligence. It also has the advantages of simple structure, convenient operation and low implementation cost, and meets the needs of modern industrial production.

[0025] (2) Different from the traditional method for detecting the solid content of ore pulp, the method for detecting the solid content of ore pulp of the present invention has higher detection efficiency and more accurate detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a real-time detection system for solid content of slurry according to the present invention;

[0027] Figure 2 It is a partial structural schematic diagram of a real-time detection system for solid content of slurry according to the present invention;

[0028] Figure 3 It is a partial structural schematic diagram of a real-time detection system for slurry solid content according to the present invention. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0030] According to the pressure formula of homogeneous liquid P = ρ·g·h, as long as the bottom pressure of the homogeneous liquid and the vertical height of the homogeneous liquid are measured, the density of the homogeneous liquid can be calculated. If the homogeneous liquid is composed of multiple substances, the equivalent density of the homogeneous liquid can be calculated using the formula Expression, where ρ is the equivalent density, k n is the mass ratio of each component, ρ n is the density of each component. When the homogeneous liquid is composed of two groups of components, the component ratio can be calculated according to the above formula. The slurry in the column is a mixture of gas, solid and liquid. By detecting the bottom pressure P of the slurry in the column, the liquid level position detection sensor detects that the height between the liquid level and the pressure sensor detection port is h, and the amount of gas injected into the column through the compressed gas inlet is M. 气 , the mass percentage concentration k of the slurry can be calculated; based on this principle, the present invention designs a real-time detection system and method for slurry solid content that uses the pressure difference principle to detect the slurry solid content.

[0031] like Figure 1-3As shown, a real-time detection system for solid content of slurry comprises a column body, wherein the column body is filled with slurry 100 to be tested, the column body is provided with a slurry inlet 104 and a slurry outlet 105 which are connected to the inside of the column body, the column body is composed of a column major diameter 101 and a column minor diameter 102, and the major diameter 101 and the minor diameter 102 are connected to each other, the diameter of the column major diameter 101 is larger than the diameter of the column minor diameter 102, an inclined plate 103 is provided inside the column major diameter 101, the inclined plate 103 is arranged at an acute angle with the bottom wall of the column major diameter 101, and is fixedly connected to the inner wall of the column major diameter 101, the slurry The discharge port 105 is arranged on the major diameter 101 of the column and is communicated with the interior of the major diameter 101 of the column. Optimally, the slurry discharge port 105 is located above the inclined plate 103, so that the slurry 100 guided by the inclined plate 103 can be discharged from the slurry discharge port 105. A valve is provided at the slurry discharge port 105, and a filler is provided in the column to prevent the rapid sedimentation of particles. The slurry inlet 104 is arranged in the middle and upper part of the minor diameter 102 of the column and is communicated with the interior of the minor diameter 102 of the column. A foam product discharge port 106 is provided at the top of the minor diameter 102 of the column for discharging the foam product inside the minor diameter 102 of the column.

[0032] In the present invention, the column body is a hollow structure with corrugated plate structured packing arranged inside, and the ore slurry 100 enters through the slurry inlet 104 and is discharged through the slurry outlet 105. After the compressed air enters the column, some extremely small bubbles will be formed, and these small bubbles will be attached to the surface of the target floatable object. Since the bubble volume is small, the buoyancy generated is small, and the rising rate of the floatable object will be small. In addition, after the slurry in the column is injected from the feed port, it moves toward the bottom discharge port as a whole, which will cause some floatable objects to be suspended in the column or move to the discharge port with the slurry. Therefore, the diameter of the major diameter of the column is larger than the diameter of the minor diameter of the column, so as to reduce the flow rate of the slurry, so that the floatable objects attached to the bubbles rise again at the major diameter, increase the probability of collision with the large bubbles, and attach the target floatable objects to the large bubbles, and discharge from the top as the large bubbles rise. In order to prevent solid materials from accumulating at the bottom of the column's major diameter 101, an inclined plate 103 is added to the bottom of the column's major diameter 101. As another embodiment of the present invention, a funnel-shaped discharge port can also be directly set at the bottom of the column's major diameter 101 to utilize the gravity effect to prompt the solid materials to move toward the slurry discharge port 105, thereby realizing automatic discharge of the solid materials.

[0033] As another embodiment of the present invention, a real-time detection system for slurry solid content also includes a bubble dispersion device 20, and a compressed gas inlet 106 connected to the interior of the column major diameter 101 is provided on the column major diameter 101, and the compressed gas inlet 106 is externally connected to a compressed gas delivery device and a compressed gas metering control device. The bubble dispersion device 20 is arranged in the column major diameter 101, and has an air inlet 208 and an air outlet. The air inlet 208 of the bubble dispersion device 20 is connected to the compressed gas inlet 106.

[0034] In the present invention, the function of the bubble dispersion device 20 is to disperse the high-pressure compressed gas and then inject it into the ore pulp 100. Under the action of the bubble dispersion device, the gas is evenly dispersed in the slurry in the column in the form of small bubbles, increasing the total surface area of ​​the bubbles in the column major diameter 101 and the column minor diameter 102, increasing the probability of the bubbles colliding with the target floatable objects, and also facilitating the formation of a homogeneous system in the column. It should be noted that the bubble dispersion device 20 in the present invention is a prior art, and its specific structure and working principle will not be described in detail here. The foam product in the column minor diameter 102 rises and is discharged through the foam product discharge port 106. The compressed gas conveying device is used to convey compressed gas into the column major diameter 101, and the compressed gas metering control device is used to measure the volume of compressed gas input into the column major diameter 101, both of which are prior art.

[0035] As another embodiment of the present invention, a real-time detection system for solid content of slurry also includes an anti-bubble overflow device 200, which is located at the upper part of the column diameter 102, and includes a slurry interception part 201 and a liquid level detection part 202, the slurry interception part 201 is connected to the inside of the column diameter 102, the slurry interception part 201 has an inclined wall 203, the inclined wall 203 of the slurry interception part 201 is set at an acute angle to the column diameter 102, and the slurry interception part 201 is provided with an interception baffle 204 and a plurality of first fins 205, the plurality of first fins 205 are all set at an acute angle to the side wall of the column diameter 102, and along the The inclined direction of the inclined wall 203 of the slurry retention part 201 is distributed in sequence at intervals, and there is a gap between the first rib 205 and the inclined wall 203 of the slurry retention part 201. The retention baffle 204 is vertically arranged, and its bottom end is connected and fixed to the first rib 205 close to the column diameter 102. The liquid level detection part 202 is arranged at the upper end of the slurry retention part 201, and is connected with the interior of the slurry retention part 201. The lower part of the liquid level detection part 202 is provided with a liquid inlet 206, and the upper end thereof is provided with a liquid level detection unit 207 and an air inlet 208. The liquid level detection unit 207 is used to detect the height of the liquid position in the liquid level detection part 202.

[0036] In the present invention, the bubble overflow preventer 200 is used to intercept the solid matter and bubbles of the slurry 100 in the column diameter 102, so that the liquid component in the slurry 100 enters the liquid level detection part 202, and the liquid level height in the liquid level detection part 202 is detected. Specifically, the side wall of the column diameter 102 is provided with a discharge port, and the slurry interception part 201 is connected with the discharge port of the column diameter 102. The slurry 100 in the column diameter 102 enters the slurry interception part 201 through the discharge port. Under the action of the interception baffle 204 and a plurality of fins, the solid matter and bubbles in the slurry 100 are intercepted layer by layer, and finally the liquid part in the slurry 100 enters the liquid level detection part 202. At the same time, the external liquid enters the liquid level detection part 202 through the liquid inlet 206, and the liquid level detection unit 207 detects the liquid level height in the liquid level detection part 202 in real time. Optimally, there are four first fins 205, and the lengths of the four first fins 205 gradually increase in the direction close to the liquid level detection part 202 to ensure the interception effect of the solid matter in the slurry 100. In the present invention, the angle between the first fin 205 and the column diameter 102 is 30° to 80°, preferably 60°, and the angle between the inclined wall 203 of the slurry interception part 201 and the column diameter 102 is 30° to 80°, preferably 60°.

[0037] In the present invention, the liquid level detection unit 207 is a liquid level detection sensor, which is a prior art, and the present invention will not elaborate on its structure and working principle.

[0038] As another embodiment of the present invention, a real-time detection system for slurry solid content also includes an auxiliary pressure detection unit 300, which is arranged at the lower part of the column minor diameter 102, and its interior is connected to the interior of the column minor diameter 102, and the side of the auxiliary pressure detection unit 300 away from the column minor diameter 102 is arranged at an acute angle to the column minor diameter 102, and the interior of the auxiliary pressure detection unit 300 is provided with a second rib 301, which is arranged at an acute angle to the side wall of the column minor diameter 102, and its upper end is fixedly connected to the side of the column minor diameter 102, and its lower end extends to the inner side wall close to the auxiliary pressure detection unit 300, and there is a gap between the inner side wall of the auxiliary pressure detection unit 300, and the upper end of the auxiliary pressure detection unit 300 is provided with a pressure sensor 302.

[0039] In the present invention, the auxiliary pressure detection part 300 is used to detect the pressure of the slurry 100 in the bottom of the column minor diameter 102, and in order to ensure the accuracy of the detection result, a pressure sensor detection port 303 is provided at the upper end of the auxiliary pressure detection part 300. Similarly, the second fin 301 is used to intercept the main slurry 100 material and bubbles to prevent the slurry 100 material from entering the pressure sensor detection port 303 and affecting the detection result of the pressure sensor 302. In the present invention, the angle between the side of the auxiliary pressure detection part 300 away from the column minor diameter 102 and the column minor diameter 102 is 30° to 80°, preferably 60°, and the angle between the second fin 301 and the column minor diameter 102 is 30° to 80°, preferably 60°.

[0040] The real-time detection system for slurry solid content of the present invention can realize the detection of the slurry solid content in the column body, and has the advantages of accurate detection results, high detection efficiency and high intelligence. It also has the advantages of simple structure, convenient operation and low implementation cost, and meets the needs of modern industrial production.

[0041] Another aspect of the present invention is to protect a method for detecting solid content of slurry, which specifically comprises the following steps:

[0042] S1. The calculation formula for the solid content of the slurry in the small diameter of the column is as follows:

[0043]

[0044] Where k is the mass concentration percentage of the slurry, ρ 固 is the density of solid matter in the slurry, ρ 液 is the density of the liquid substance in the slurry, P is the pressure at the bottom of the column, h is the height between the liquid level detected by the liquid level detection unit and the detection port of the pressure sensor, M 气 is the amount of gas injected into the cylinder's small diameter from the compressed gas inlet, ρ 气 is the air density and v is the rising velocity of the bubble.

[0045] Specifically, the derivation process of formula (2) is:

[0046] Assume k is the mass concentration percentage of the slurry, ρ 固 is the density of solid matter in the slurry, ρ 液 is the density of the liquid substance in the slurry, P is the pressure measured by the pressure sensor at the bottom of the column, h is the height between the liquid level detected by the liquid level detection unit and the pressure sensor detection port, and the amount of gas injected into the column through the compressed gas inlet is M 气 cubic / second, the density of the compressed gas is ρ 气 , the bubble rising speed in the column is measured as v m / s, the equivalent density of the three-phase mixture of gas, solid and liquid in the small diameter of the column is ρ, and the radius of the small diameter of the column is r, then:

[0047] P=ρ·g·h ①

[0048] Equivalent cross-sectional area after the gas enters the column

[0049]

[0050] Then the volume of the gas in the cylinder of height h is

[0051]

[0052] The volume of the cylinder's minor diameter is

[0053] V 柱 =π·r 2 ·h③

[0054] The volume of slurry in the small diameter of the column is

[0055] V 浆 =V 柱 -V 气 ④

[0056] The total gas mass within the cylinder's minor diameter is

[0057] m 气 =ρ 气 ·V 气

[0058] The total slurry mass within the column diameter is

[0059] m 浆 =ρ 浆 ·V 浆

[0060] According to the density definition formula, the equivalent density ρ of the uniform mixture of gas, solid and liquid in the cylinder is

[0061]

[0062] Combine ①②③④⑤ to get

[0063]

[0064] Assume that the total mass of the slurry is M1 grams.

[0065] The mass of the solid matter in the slurry is M 固 =M1g The mass of the liquid in the pulp is Mliquid = (1-k)M1g The volume of the solid in the pulp is V 固 for:

[0066]

[0067] The volume of liquid in the slurry V 液 for:

[0068]

[0069] The total volume of the slurry V 混 for:

[0070]

[0071] Density of slurry ρ 浆 for:

[0072]

[0073] Simplify the above equation to:

[0074]

[0075] Then, the expression for mass concentration k is:

[0076]

[0077] Substituting equation ⑥ into equation ⑧, we can obtain the value of k.

[0078] When the compressed gas M injected into the small diameter of the column 气 =0, Formula ⑥ can be simplified to:

[0079]

[0080] Then formula ⑧ can be simplified to:

[0081]

[0082] S2. Obtain the density value of the solid matter in the slurry, the density value of the liquid matter in the slurry, the pressure value at the bottom of the column diameter, the height value between the liquid surface detected by the liquid level detection unit and the detection port of the pressure sensor, the gas volume of the compressed gas, and the rising speed of the bubbles in sequence, and substitute them into equations (1) and (2) in S1 to measure the solid content value of the slurry.

[0083] <Example 1>

[0084] This example takes lead-zinc ore as an example. It is found that the density of the ore is ρ 固 =2.7g / cm 3 , the density of water in the slurry is ρ 液 =1g / cm 3The grinding fineness is minus 200 mesh 70%. The lead-zinc ore and water are mixed to a slurry concentration of 30% solid content (a mixture of 30 parts by mass of solid material and 70 parts by mass of water). The slurry pump is continuously pumped into the small diameter of the column through the slurry inlet. The slurry in the column is controlled by a valve to control the flow rate so that the liquid level in the liquid level detection part is constant at the preset position. At the same time, a certain amount of compressed air (M 气 =0.01 cubic / second, the density of compressed air is ρ 气 =1.12kg / m 3 ) enters the column diameter through the compressed gas inlet through the bubble dispersion device, and the bubbles rise in the column diameter. At this time, the measured rising speed of the bubbles is v = 0.3 m / s. The rising bubbles separate the lead from the lead-zinc ore slurry and overflow from the foam product discharge port. It is measured that the radius of the column diameter is r = 0.3m, the vertical distance between the liquid level position in the liquid level detection part and the pressure sensor detection port is h = 7.5m, and the pressure value of the real-time sampling pressure sensor is P = 80132Pa. Substituting into formula (1) and formula (2), the measured slurry solid content k = 30.18%.

[0085] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.

[0086] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0087] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A real-time detection system for solid content of slurry, comprising a column body, characterized in that: The column body is composed of a column major diameter and a column minor diameter; the column minor diameter is provided with a slurry inlet connected to the interior thereof, and the column major diameter is provided with a slurry discharge outlet and a compressed gas inlet connected to the interior thereof; Also included is an anti-bubble overflow device, which is arranged at the upper part of the column diameter and communicated with the interior of the column diameter, and a liquid level detection unit is provided on the anti-bubble overflow device; The auxiliary pressure detection part is arranged at the lower part of the minor diameter of the column and communicated with the interior of the minor diameter of the column. The auxiliary pressure detection part is provided with a pressure sensor.

2. A real-time detection system for slurry solid content according to claim 1, characterized in that: The diameter of the major diameter of the column is greater than the diameter of the minor diameter of the column.

3. A real-time detection system for slurry solid content according to claim 1, characterized in that: An inclined plate is provided inside the large diameter of the column, the inclined plate is arranged at an acute angle with the bottom wall of the large diameter of the column, and is fixedly connected to the inner wall of the large diameter of the column, and the slurry discharge port is located above the inclined plate.

4. A real-time detection system for slurry solid content according to claim 1, characterized in that: The compressed gas inlet is externally connected to a compressed gas delivery and compressed gas metering control device, a bubble dispersion device is provided inside the major diameter of the column, the bubble dispersion device has an air inlet and an air outlet, and the air inlet of the bubble dispersion device is connected to the compressed gas inlet.

5. A real-time detection system for slurry solid content according to claim 1, characterized in that: The anti-bubble overflow device includes a slurry interception part and a liquid level detection part; The slurry interception part is communicated with the interior of the column minor diameter, the slurry interception part has an inclined wall, the inclined wall of the slurry interception part is set at an acute angle with the column minor diameter, an interception baffle and a plurality of first ribs are arranged in the slurry interception part, the plurality of first ribs are all set at an acute angle with the side wall of the column minor diameter, and are sequentially spaced and distributed along the inclination direction of the inclined wall of the slurry interception part, there is a gap between the first rib and the inclined wall of the slurry interception part, the interception baffle is vertically arranged, and its bottom end is connected and fixed to the first rib close to the column minor diameter; The liquid level detection part is arranged at the upper end of the slurry retention part, and is communicated with the interior of the slurry retention part. A liquid inlet is arranged at the lower part of the liquid level detection part, and a liquid level detection unit and an air inlet are arranged at the upper end. The liquid level detection unit is used to detect the height of the liquid position in the liquid level detection part.

6. A real-time detection system for slurry solid content according to claim 5, characterized in that: The lengths of the first ribs gradually increase in a direction approaching the liquid level detection portion, and an angle between the first ribs and the minor diameter of the column is 30° to 80°.

7. A real-time detection system for slurry solid content according to claim 1, characterized in that: The side of the auxiliary pressure detecting part away from the column minor diameter is set at an acute angle to the column minor diameter, and a second rib is provided inside the auxiliary pressure detecting part. The second rib is set at an acute angle to the side wall of the column minor diameter, and there is a gap between the second rib and the inner side wall of the auxiliary pressure detecting part. A pressure sensor is provided at the upper end of the auxiliary pressure detecting part.

8. A real-time detection system for slurry solid content according to claim 7, characterized in that: The angle between the side of the auxiliary pressure detection portion away from the minor diameter of the column and the minor diameter of the column is 30° to 80°, and the angle between the second rib and the minor diameter of the column is 30° to 80°.

9. A real-time detection system for slurry solid content according to claim 1, characterized in that: A valve is provided at the slurry discharge outlet.

10. A method for detecting solid content of slurry, characterized in that: The detection is performed using the real-time detection system for solid content of slurry according to any one of claims 1 to 9, comprising the following steps: S1. The calculation formula for the solid content of the slurry in the small diameter of the column is as follows: Where k is the mass concentration percentage of the slurry, ρ 固 is the density of solid matter in the slurry, ρ 液 is the density of the liquid substance in the slurry, P is the pressure at the bottom of the column, h is the height between the liquid level detected by the liquid level detection unit and the detection port of the pressure sensor, M 气 is the amount of gas injected into the cylinder's small diameter from the compressed gas inlet, ρ 气 is the density of the compressed gas, v is the rising velocity of the bubble in the cylinder, and r is the radius of the cylinder's minor diameter. S2. Obtain the density value of the solid matter in the slurry, the density value of the liquid matter in the slurry, the pressure value at the bottom of the column diameter, the height value between the liquid level detected by the liquid level detection unit and the detection port of the pressure sensor, the gas volume of the compressed gas and the rising speed of the bubbles in sequence, and substitute them into equations (1) and (2) in S1 to measure the solid content value of the slurry.

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