Ore pulp solid content detection system

Abstract

The utility model relates to the technical field of ore pulp concentration detection, in particular to an ore pulp concentration real-time detection system. An ore pulp solid content detection system comprises a cylinder body, an anti-bubble overflow device and an auxiliary pressure detection part, and the cylinder body is composed of a cylinder large diameter and a cylinder small diameter; the small diameter of the cylinder is provided with a slurry inlet and a compressed gas inlet which are communicated with the interior of the cylinder, and the large diameter of the cylinder is provided with a slurry outlet communicated with the interior of the cylinder; the bubble overflow prevention device is arranged at the upper part of the small-diameter part of the column body and is communicated with the interior of the small-diameter part of the column body, and a liquid level detection unit is arranged on the bubble overflow prevention device; and the auxiliary pressure detection part is arranged at the lower part of the small diameter of the column body and is communicated with the interior of the small diameter of the column body, and the auxiliary pressure detection part is provided with a pressure sensor.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of ore pulp concentration detection, and specifically relates to an ore pulp solid content detection system. BACKGROUND

[0002] Ore pulp solid content detection is an important technology in industrial process control, widely used in mining, papermaking, pharmaceutical, food processing and chemical industries. Ore pulp solid content refers to the proportion of solid particles in the ore pulp, which directly affects the quality of the product and the process efficiency.

[0003] With the continuous development of industrial automation and intelligentization, higher requirements are put forward for ore pulp solid content detection technology. Modern industrial processes require a technology that can quickly, accurately and online real-time detect the ore pulp solid content to improve production efficiency, optimize process control and reduce production cost. In view of the deficiencies in the prior art, a new type of ore pulp solid content detection device is needed. INNOVATION CONTENT

[0004] Therefore, the patent aims to provide an improved ore pulp solid content detection technology, which realizes efficient, accurate and online real-time detection of ore pulp solid content through innovative detection principle and equipment design, to meet the needs of modern industrial production.

[0005] An ore pulp solid content detection system, comprising a column body, the column body is composed of a large diameter column and a small diameter column; a pulp inlet is arranged on the small diameter column and communicates with the inside of the small diameter column, and a pulp discharge outlet and a compressed gas inlet are arranged on the large diameter column and communicate with the inside of the large diameter column.

[0006] Further, a bubble overflow preventer is arranged on the upper part of the small diameter column and communicates with the inside of the small diameter column, and a liquid level detection unit is arranged on the bubble overflow preventer.

[0007] Further, an auxiliary pressure detection part is arranged on the lower part of the small diameter column and communicates with the inside of the small diameter column, and a pressure sensor is arranged on the auxiliary pressure detection part.

[0008] Further, the diameter of the large diameter column is greater than the diameter of the small diameter column.

[0009] Further, an inclined plate is arranged in the inside of the large diameter column, the inclined plate is arranged at an acute angle with the bottom wall of the large diameter column and is fixedly connected with the inner wall of the large diameter column, and the pulp discharge outlet is located above the inclined plate.

[0010] Further, the compressed gas inlet is externally connected with a compressed gas delivery and compressed gas metering control device, the large-diameter column body is internally provided with a bubble dispersion device, the bubble dispersion device is provided with an air inlet and an air outlet, and the air inlet of the bubble dispersion device is in communication with the compressed gas inlet.

[0011] Further, the bubble overflow preventer comprises a slurry interception portion and a liquid level detection portion.

[0012] The slurry interception portion is in communication with the interior of the small-diameter column body, the slurry interception portion is provided with an inclined wall, the inclined wall of the slurry interception portion is arranged at an acute angle with the small-diameter column body, the slurry interception portion is internally provided with an interception baffle and a plurality of first ribs, the plurality of first ribs are all arranged at an acute angle with the side wall of the small-diameter column body and are sequentially and spacedly distributed along the inclination direction of the inclined wall of the slurry interception portion, a gap is formed between the first ribs and the inclined wall of the slurry interception portion, and the interception baffle is vertically arranged and is fixedly connected with the first ribs close to the small-diameter column body at the bottom end.

[0013] The liquid level detection portion is arranged at the upper end of the slurry interception portion and is in communication with the interior of the slurry interception portion, the lower part of the liquid level detection portion is provided with a liquid inlet, the upper end of the liquid level detection portion is provided with a liquid level detection unit and an air inlet, and the liquid level detection unit is used for detecting the liquid position height in the liquid level detection portion.

[0014] Further, the lengths of the plurality of first ribs gradually increase along the direction close to the liquid level detection portion, and the included angle between the first ribs and the small-diameter column body is 30°-80°.

[0015] Further, the side of the auxiliary pressure detection portion away from the small-diameter column body is arranged at an acute angle with the small-diameter column body, the interior of the auxiliary pressure detection portion is provided with a second rib, the second rib is arranged at an acute angle with the side wall of the small-diameter column body, a gap is formed between the second rib and the inner side wall of the auxiliary pressure detection portion, and the upper end of the auxiliary pressure detection portion is provided with a pressure sensor.

[0016] Further, the included angle between the side of the auxiliary pressure detection portion away from the small-diameter column body and the small-diameter column body is 30°-80°, and the included angle between the second rib and the small-diameter column body is 30°-80°.

[0017] The slurry solid content detection system of the utility model can realize the detection of the slurry concentration in the column body, has the advantages of accurate detection result, high detection efficiency and high intelligent degree, has the advantages of simple structure, convenient operation and low implementation cost, and meets the needs of modern industrial production. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1This is a schematic diagram of the structure of the slurry solids content detection system described in this utility model;

[0019] Fig. 2 This is a partial structural schematic diagram of a slurry solids content detection system according to the present invention;

[0020] Fig. 3 This is a partial structural schematic diagram of a slurry solids content detection system according to the present invention. Detailed Implementation

[0021] To make the objectives, technical solutions and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0022] like Figs. 1-3 As shown, a slurry solids content detection system includes a column body filled with the slurry 100 to be tested. The column body has a slurry inlet 104 and a slurry outlet 105 communicating with its interior. The column body consists of a major diameter 101 and a minor diameter 102, which are internally connected. The diameter of the major diameter 101 is larger than the diameter of the minor diameter 102. An inclined plate 103 is provided inside the major diameter 101, forming an acute angle with the bottom wall of the major diameter 101 and fixedly connected to its inner wall. The slurry outlet... The outlet 105 is located on the major diameter 101 of the column and communicates with the interior of the major diameter 101. Preferably, the slurry outlet 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 outlet 105. A valve is provided at the slurry outlet 105. The column is filled with packing to prevent particles from settling rapidly. The slurry inlet 104 is located in the upper middle part of the minor diameter 102 of the column and communicates with the interior of the minor diameter 102. A foam product outlet 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.

[0023] In the utility model, the column body is the hollow structure that internally is provided with the regular filler of corrugated board, the ore pulp 100 enters through the slurry inlet 104, and is discharged through the slurry discharge port 105. After compressed air enters the column, it will form some very small bubbles, and these small bubbles adhere to the surface of the target floatable object. Since the volume of the bubbles is small, the buoyancy generated is small, and the rising rate of the floatable object will be small. Since the slurry in the column moves as a whole to the bottom discharge port after being injected from the feed inlet, it will cause some floatable objects to be suspended in the column or to move with the slurry to the discharge port. Therefore, the diameter of the large diameter of the column is greater than the diameter of the small diameter of the column, so as to reduce the flow rate of the slurry, make the floatable object with bubbles rise again at the large diameter, increase the collision probability with large bubbles, and attach the target floatable object to the large bubbles, and then discharge from the top. In order to realize that the solid material is not accumulated at the bottom of the large diameter of the column 101, a sloping plate 103 is arranged at the bottom of the large diameter of the column 101, which is another embodiment of the utility model. A funnel-shaped discharge port can also be directly arranged at the bottom of the large diameter of the column 101, so as to promote the movement of the solid material to the slurry discharge port 105 by gravity effect, and realize the automatic discharge of the solid material.

[0024] As another embodiment of the utility model, a slurry solid content detection system further comprises a bubble dispersion device 20, the large diameter of the column 101 is provided with a compressed gas inlet 106 which is in communication with the inside thereof, the compressed gas inlet 106 is connected with a compressed gas conveying device and a compressed gas metering control device, and the bubble dispersion device 20 is arranged in the large diameter of the column 101 and has a gas inlet 208 and a gas outlet, and the gas inlet 208 of the bubble dispersion device 20 is in communication with the compressed gas inlet 106.

[0025] In the utility model, the function of the bubble dispersion device 20 is to inject the high-pressure compressed gas into the ore pulp 100 after dispersion treatment. Under the action of the bubble dispersion device, the gas is uniformly dispersed in the slurry in the column in the form of small bubbles, the total surface area of the bubbles in the large diameter of the column 101 and the small diameter of the column 102 is increased, the probability of collision between the bubbles and the target floatable object is increased, and a homogeneous system is also formed in the column. It should be noted that the bubble dispersion device 20 in the utility model is prior art, and its specific structure and working principle will not be described here. The rising of the foam product in the small diameter of the column 102 is discharged through the foam product discharge port 106. The compressed gas conveying device is used for conveying compressed gas into the large diameter of the column 101, and the compressed gas metering control device is used for metering the volume of the compressed gas input into the large diameter of the column 101, which are both prior art.

[0026] As another embodiment of the utility model, a kind of ore pulp solid content detection system further includes anti-foam overflow 200, the anti-foam overflow 200 is located in the upper portion of the cylinder small diameter 102, it includes ore pulp interception part 201 and liquid level detection part 202, the ore pulp interception part 201 is communicated with the inside of the cylinder small diameter 102, ore pulp interception part 201 has inclined wall 203, the inclined wall 203 of the ore pulp interception part 201 is arranged with the acute angle of the cylinder small diameter 102, interception baffle 204 and multiple first ribs 205 are equipped in the ore pulp interception part 201, multiple the first rib 205 is arranged with the acute angle of the side wall of the cylinder small diameter 102, and it is sequentially spaced along the inclination direction of the inclined wall 203 of the ore pulp interception part 201, the first rib 205 and the inclined wall 203 between the ore pulp interception part 201 have gap, the interception baffle 204 is vertically arranged, and its bottom end is connected and fixed with the first rib 205 close to the cylinder small diameter 102, the liquid level detection part 202 is arranged in the upper end of the ore pulp interception part 201, and it is communicated with the inside of the ore pulp interception part 201, the lower portion of the liquid level detection part 202 is equipped with liquid inlet 206, and its upper end is equipped with liquid level detection unit 207 and gas inlet 208, and the liquid level detection unit 207 is used to detect the liquid position height in the liquid level detection part 202.

[0027] In the utility model, anti-foam overflow 200 is used to intercept the solid material and bubble of ore pulp 100 in the cylinder small diameter 102, so that the liquid component in ore pulp 100 enters the liquid level detection part 202, and the detection of the liquid height in the liquid level detection part 202 is realized.Specifically, the side wall of the cylinder small diameter 102 is equipped with discharge port, and the ore pulp interception part 201 is communicated with the discharge port of the cylinder small diameter 102, and the ore pulp 100 in the cylinder small diameter 102 enters the ore pulp interception part 201 through the discharge port, and under the action of interception baffle 204 and multiple ribs, the solid material and bubble in ore pulp 100 are intercepted layer by layer, finally, the liquid part in ore pulp 100 enters the liquid level detection part 202, and at the same time, external liquid enters the liquid level detection part 202 through liquid inlet 206, and liquid level detection unit 207 detects the liquid height in the liquid level detection part 202 in real time.Optimally, the first rib 205 is equipped with 4, and the length of the four first ribs 205 gradually increases along the direction close to the liquid level detection part 202, to ensure the interception effect of the solid material in ore pulp 100.In the utility model, the included angle between the first rib 205 and the cylinder small diameter 102 is 30 °-80 °, preferably 60 °, and the included angle between the inclined wall 203 of the ore pulp interception part 201 and the cylinder small diameter 102 is 30 °-80 °, preferably 60 °.

[0028] In the utility model, liquid level detection unit 207 is liquid level detection sensor, it is prior art, the utility model no longer carries out the tedious description to its structure and working principle here.

[0029] As another embodiment of the utility model, a kind of ore pulp solid content detection system further includes auxiliary pressure detection part 300, the auxiliary pressure detection part 300 is arranged at the lower part of the cylinder small diameter 102, inside and the inside of the cylinder small diameter 102 are communicated, the side of the auxiliary pressure detection part 300 away from the cylinder small diameter 102 is arranged with the acute angle of the cylinder small diameter 102, the inside of the auxiliary pressure detection part 300 is equipped with second baffle 301, the second baffle 301 is arranged with the acute angle of the side wall of the cylinder small diameter 102, its upper end is fixedly connected with the side of the cylinder small diameter 102, its lower end extends to the inner side wall close to the auxiliary pressure detection part 300, and there is gap between the inner side wall of the auxiliary pressure detection part 300, the upper end of the auxiliary pressure detection part 300 is equipped with pressure sensor 302.

[0030] In the utility model, auxiliary pressure detection part 300 is used to realize the pressure detection of ore pulp 100 in the bottom of cylinder small diameter 102, and in order to guarantee the accuracy of detection result, the upper end of auxiliary pressure detection part 300 is equipped with pressure sensor detection port 303.Similarly, the second baffle 301 is used to intercept main ore pulp 100 substance and bubble, avoid ore pulp 100 substance into pressure sensor detection port 303, influence the detection result of pressure sensor 302.In the utility model, the included angle between the side of the auxiliary pressure detection part 300 away from the cylinder small diameter 102 and the cylinder small diameter 102 is 30 °-80 °, preferably 60 °, the included angle between the second baffle 301 and the cylinder small diameter 102 is 30 °-80 °, preferably 60 °.

[0031] The ore pulp solid content detection system of the utility model can realize the detection of ore pulp concentration in the cylinder body, has the advantages of accurate detection result, high detection efficiency and high intelligent degree, and also has the advantages of simple structure, convenient operation and low implementation cost, meets the needs of modern industrial production.

[0032] The ore pulp solid content detection system of the utility model specifically includes the following operation steps:

[0033] S1, the calculation formula of the ore pulp concentration in the cylinder small diameter is as follows:

[0034]

[0035] Wherein, k is the mass concentration percentage of ore pulp, ρ 固 The density of solid material in ore pulp, ρ 液Let P be the density of the liquid substance in the slurry, P be the pressure at the bottom of the small diameter column, h be the height between the liquid level detected by the liquid level detection unit and the detection port of the pressure sensor, and M be the density of the liquid substance in the slurry. 气 ρ is the amount of gas injected into the small diameter column at the compressed gas inlet. 气 Let ρ be the air density and v be the bubble's upward velocity.

[0036] Specifically, the derivation process of equation (2) is as follows:

[0037] Let k be the mass concentration percentage of the slurry, ρ 固 ρ is the density of the solid matter in the slurry. 液 Let P be the density of the liquid substance in the slurry, P be the pressure measured by the pressure sensor at the bottom of the small diameter column, h be the height of the liquid level detected by the liquid level detection unit from the detection port of the pressure sensor, and M be the amount of gas injected into the small diameter column through the compressed gas inlet. 气 cubic meters per second, the density of the compressed gas is ρ. 气 The measured rising velocity of the bubbles inside the column is v m / s. The equivalent density of the gas-solid-liquid three-phase mixture within the small diameter of the column is ρ, and the radius of the small diameter of the column is r. Then:

[0038] P=ρ·g·h ①

[0039] Equivalent cross-sectional area of ​​gas after entering the column

[0040]

[0041] The volume of the gas in the column at height h is:

[0042]

[0043] The volume of the minor diameter of the prism is

[0044] V 柱 =π·r 2 ·h ③

[0045] The volume of the slurry in the small diameter of the column is

[0046] V 浆 =V 柱 -V 气 ④

[0047] The total gas mass within the small diameter of the column is

[0048] m 气 =ρ 气 ·V 气

[0049] The total mass of slurry within the small diameter of the column is

[0050] m 浆 =ρ 浆 ·V浆

[0051] The equivalent density of the three-phase uniform mixture of gas, solid and liquid in the column is ρ according to the density definition formula

[0052]

[0053] Combining ①②③④⑤, we get

[0054]

[0055] Assume that the total mass of the ore pulp is M1 grams.

[0056] The mass of the solid material in the ore pulp is M 固 = M1 grams

[0057] The mass of the liquid material in the ore pulp is Mliquid = (1-k)M1 grams

[0058] The volume of the solid material in the ore pulp V 固 is:

[0059]

[0060] The volume of the liquid material in the ore pulp V 液 is:

[0061]

[0062] The total volume of the ore pulp V 混 is:

[0063]

[0064] The density of the ore pulp ρ 浆 is:

[0065]

[0066] Simplify the above equation as:

[0067]

[0068] Then, the expression of the mass concentration k is:

[0069]

[0070] Bring the ⑥ formula into the ⑧ formula to get the value of k.

[0071] When the compressed gas M 气 = 0 injected into the small diameter of the column, the ⑥ formula can be simplified as:

[0072]

[0073] Then the formula 7 can be simplified as:

[0074]

[0075] S2, sequentially obtain the density value of solid matter in the pulp, the density value of liquid matter in the pulp, the pressure value at the bottom of the small diameter of the column, the height value of 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, the bubble rising speed, and the formula (1) and formula (2) in S1, so as to measure the pulp concentration value.

[0076] In this article, the front, back, up, down and other orientation words are defined by the position of the parts in the drawing and the position of the parts relative to each other in the drawing, just to express the technical solution clearly and conveniently. It should be understood that the use of the orientation words should not limit the scope of the application.

[0077] In the case of no conflict, the above-mentioned embodiments and features in the embodiments can be combined with each other.

[0078] The above is only the preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. An ore pulp solids content detection system comprising a column body, characterized in that, The column body is composed of a large-diameter column and a small-diameter column; the small-diameter column is provided with a slurry inlet communicating with the inside of the small-diameter column, and the large-diameter column is provided with a slurry discharge outlet and a compressed gas inlet communicating with the inside of the large-diameter column; Further comprising a bubble overflow preventer, which is arranged at the upper part of the small-diameter column and communicates with the inside of the small-diameter column, and is provided with a liquid level detection unit; An auxiliary pressure detection part, which is arranged at the lower part of the small-diameter column and communicates with the inside of the small-diameter column, and is provided with a pressure sensor.

2. A system for detecting solids content of a mineral slurry according to claim 1, characterized in that, The diameter of the large-diameter column is larger than that of the small-diameter column.

3. A system for detecting solids content of a mineral slurry according to claim 1, characterized in that, The inside of the large-diameter column is provided with an inclined plate, which is arranged at an acute angle with the bottom wall of the large-diameter column and is fixedly connected with the inner wall of the large-diameter column, and the slurry discharge outlet is located above the inclined plate.

4. A system for detecting solids content of a mineral slurry according to claim 1, characterized in that, The compressed gas inlet is circumscribed by compressed gas delivery and compressed gas metering control devices, the inside of the large-diameter column is provided with a bubble dispersion device, which has an air inlet and an air outlet, and the air inlet of the bubble dispersion device communicates with the compressed gas inlet.

5. A system for detecting solids content of a mineral slurry according to claim 1, wherein The bubble overflow preventer comprises a slurry interception part and a liquid level detection part; The slurry interception part communicates with the inside of the small-diameter column, has an inclined wall, which is arranged at an acute angle with the small-diameter column, and is provided with an interception baffle and a plurality of first ribs, the plurality of first ribs are arranged at an acute angle with the side wall of the small-diameter column and are sequentially and spacedly distributed along the inclination direction of the inclined wall of the slurry interception part, the first ribs and the inclined wall of the slurry interception part have gaps therebetween, and the interception baffle is vertically arranged, with its bottom end fixedly connected with the first ribs close to the small-diameter column; The liquid level detection part is arranged at the upper end of the slurry interception part, communicates with the inside of the slurry interception part, has a liquid inlet at its lower part, and has a liquid level detection unit and an air inlet at its upper end, and the liquid level detection unit is used for detecting the liquid position height in the liquid level detection part.

6. A system for detecting solids content of a mineral slurry according to claim 5, characterized in that The lengths of the plurality of first ribs gradually increase along the direction close to the liquid level detection part, and the included angle between the first ribs and the small-diameter column is 30°-80°.

7. A system for detecting solids content of a mineral slurry according to claim 1, wherein The side of the auxiliary pressure detection part away from the small-diameter column is arranged at an acute angle with the small-diameter column, the inside of the auxiliary pressure detection part is provided with a second rib, the second rib is arranged at an acute angle with the side wall of the small-diameter column, the second rib and the inner side wall of the auxiliary pressure detection part have gaps therebetween, and the upper end of the auxiliary pressure detection part is provided with a pressure sensor.

8. A system for detecting solids content of a mineral slurry according to claim 7, characterized in that The included angle between the side of the auxiliary pressure detection part away from the small-diameter column and the small-diameter column is 30°-80°, and the included angle between the second rib and the small-diameter column is 30°-80°.

9. A system for detecting solids content of a mineral slurry according to claim 1, wherein The slurry discharge outlet is provided with a valve.

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