CN116328941A - Magnetic field instant adjusting system and method based on production process monitoring - Google Patents

Abstract

The invention belongs to the technical field of magnetic field adjustment, and particularly relates to a magnetic field instant adjustment system and method based on production process monitoring. The magnetic field assembly is positioned in the roller, the roller is positioned in the working groove, the magnetic field assembly and the roller rotate asynchronously, and the magnetic field assembly is provided with n adjustable magnetic fields; the sampling assembly is used for respectively collecting n target substances obtained through magnetic separation in the adjustable magnetic field areas to be detected samples, the detection assembly is used for detecting the purity of the target substances in the n samples to be detected, and the synchronous adjustment assembly can be used for adjusting the n adjustable magnetic fields to be the target magnetic fields. The magnetic separation system is adjusted according to the detection result and the actual demand, the monitoring and timely adjustment of the production process can be achieved, and the extraction precision of target substances is greatly improved.

Description

Magnetic field instant adjusting system and method based on production process monitoring

Technical Field

The invention belongs to the technical field of magnetic fields, relates to a magnetic field adjusting technology, and in particular relates to a magnetic field instant adjusting system and method based on production process monitoring.

Background

The red mud is tailings produced in the aluminum industry production process, has a complex mineral composition, mainly contains minerals such as Al2O3, fe2O3, siO2 and the like, and generally has strong alkalinity and corrosiveness. Typically on average 1 ton of alumina is produced, with 1.0-2.0 tons of red mud being produced.

The red mud is rich in iron, aluminum, calcium, silicon, titanium, sodium, nickel, manganese, chromium, vanadium and scandium, yttrium and lanthanide rare earth elements, and can change waste into valuable and become benefit through comprehensive development and utilization, and especially under the condition of increasingly lacking mineral resources, the recovery of valuable metals in the red mud is increasingly important. The content of ferric oxide in the red mud is up to 13% -22%, the content of titanium oxide is up to 4% -8%, even higher than the content of some titanium ores, and the content of aluminum oxide is up to 14% -20%, and all three elements have obvious extraction values.

Because the red mud raw materials and the intermediate materials used for separation have different factors such as component content, mineral composition, ore vein structure, arrangement and the like, the red mud raw materials or the intermediate materials used for separation have different regions and different batches, and the technological process of fixing parameters has limited contribution to the grade and quality improvement of obtaining valuable resources. For example, in the production process, the accuracy of the target substance obtained by the fixed-parameter process cannot be adjusted, i.e., only the mineral substance fed can be adjusted, or the target substance after the production is processed in the next step, but the system in the process production cannot be adjusted, so that the process efficiency is very low.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a magnetic field instant adjusting system and a magnetic field instant adjusting method based on production process monitoring.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

there is provided a magnetic field immediate adjustment system based on production process monitoring, comprising,

a working tank, a roller and a magnetic field assembly;

the magnetic field assembly is positioned in the roller, the roller is positioned in the working groove, the magnetic field assembly and the roller rotate asynchronously, and the magnetic field assembly is provided with n adjustable magnetic fields;

the device comprises a sampling assembly, a detection assembly and an adjusting assembly;

the sampling assembly is used for respectively collecting target substances obtained by magnetic separation of n adjustable magnetic field areas as samples to be detected, the detection assembly is used for detecting the purity of the target substances in the n samples to be detected and calculating one adjustable magnetic field corresponding to the samples to be detected, the purity of the target substances of which is greater than a purity threshold value, as a target magnetic field, the adjustment assembly is provided with a synchronous adjustment assembly and an asynchronous adjustment assembly, the synchronous adjustment assembly can be used for adjusting the n adjustable magnetic fields as the target magnetic field, the asynchronous adjustment assembly can be used for adjusting the n adjustable magnetic fields as different magnetic field intensities, and n is an integer greater than 1;

the n samples to be detected collected by the sampling component are in one-to-one correspondence with the n adjustable magnetic fields.

Preferably, the magnetic field assembly is provided with a main shaft and n permanent magnets, the adjusting assembly is provided with n adjusting modules, each adjusting module is provided with a changing assembly and a connecting piece, and the n permanent magnets are correspondingly connected with the n adjusting modules one by one through the n connecting pieces;

the variable component is of an external thread structure with small middle and large two ends, the variable component can be divided into a left component and a right component by taking the cross section of the part with the smallest external thread diameter as a tangent plane, the threads of the left component and the threads of the right component are the same in direction, n variable components are fixedly sleeved on the main shaft in the same direction, the thread lead angles of the left component are the same, the thread lead angles of n right components are distributed in a gradient manner, the permanent magnets are fixedly connected with the connecting piece, and the connecting piece is movably connected with the external threads of the variable component;

the working groove is provided with a scraper plate, and the scraper plate surface is provided with (n-1) separation plates which are used for separating target substances in n adjustable magnetic field areas.

Preferably, the end face of the main shaft driving end is provided with an indication line, the bracket is provided with scale lines matched with the indication line, and the scale lines and the thread lift angle of the change assembly are in one-to-one correspondence with each other in an (n+1) group.

Preferably, the sampling assembly has n samplers operable to collect n target substances extracted from the tunable magnetic field regions.

Preferably, the magnetic field assembly has a stop for preventing the permanent magnet from moving in the axial direction of the spindle.

Preferably, the connecting piece is provided with a first connecting piece, a second connecting piece and an auxiliary limiting piece;

the middle part of the second connecting piece is provided with a horizontal cross beam, the upper end of the first connecting piece is connected with the external thread in a matched manner, and the lower end of the first connecting piece is movably sleeved with the horizontal cross beam through a rolling piece, so that the upper end of the rolling piece is extruded with the lower end of the horizontal cross beam;

the lower extreme and the permanent magnet fixed connection of second connecting piece, the upper end of second connecting piece have two parallel curb plates of taking the connecting hole, and the main shaft contactless passes the connecting hole, and the change subassembly is located between the both sides board, and auxiliary limiting piece is located between adjacent change subassembly and the curb plate, and auxiliary limiting piece is laminated with the side at curb plate place, and auxiliary limiting piece passes through the bearing and is connected with the main shaft for auxiliary limiting piece can rotate around the axis of main shaft.

Preferably, the driven end of the spindle has an angle sensor for detecting the angle of torsion of the driven end of the spindle.

Preferably, the driven end of the spindle is provided with a first indication line, and the bracket is provided with a first scale line matched with the first indication line.

Preferably, the main shaft drive end has a catch member for preventing rotation of the main shaft.

The magnetic field instant adjusting method based on the production process monitoring comprises the magnetic field instant adjusting system based on the production process monitoring, specifically comprises the following steps,

s1: the system works to respectively produce concentrate and tailings;

s2: in the sampling stage, the main shaft is rotated to adjust the adjusting system, so that the distances between the n permanent magnets and the roller wall are different, the rotation direction and the rotation angle of the main shaft are recorded, and the sampler respectively collects the extracted target substances of the n permanent magnet areas;

s3: the detection stage is used for respectively detecting the purity of the target substances acquired by the n samplers;

s4: the method comprises the steps of a regulating stage, namely, finding out one changing component corresponding to a permanent magnet region with the purity of a target substance being greater than a purity threshold value as a target changing component, obtaining a target distance between the permanent magnets and a roller wall by combining the rotation direction and the rotation angle of a main shaft and parameters of the target changing component, and regulating the main shaft so that the distances between n permanent magnets and the roller wall are all target distances;

s5: in the production stage, the main shaft is fixed by the locking piece, tailings are discharged through the tailings pipeline, and concentrate is collected in the concentrate groove.

Preferably, between step S1 and step S2,

the sampler collects the target substances magnetically separated by the n permanent magnet areas respectively, judges whether the purity of the extracted target substances reaches the target parameters, jumps back to the step S1 if the purity of the extracted target substances reaches the target parameters, and jumps to the step S2 if the purity of the extracted target substances does not reach the target parameters.

The beneficial effects of the invention are as follows: according to the magnetic separation system, the adjusting module is adjusted, the distances between n permanent magnets and the roller wall are different, the precision of target substances produced in different areas is detected respectively, then the detected result is fed back to the adjusting module, the adjusting module is adjusted, the purpose that the magnetic field in the production process is adjustable is achieved, on one hand, the magnetic separation system is adjusted, the target substances with different precision and grade can be obtained, and the working efficiency of the magnetic separation system is improved. On the other hand, the magnetic separation system is adjusted according to detection results and actual demands by interval sampling detection or periodic sampling detection in the production process, and the magnetic separation system can monitor and timely adjust the production process, so that the extraction precision of target substances is greatly improved.

Drawings

FIG. 1 is an overall perspective view of the present invention;

FIG. 2 is a perspective view of a hidden roller according to the present invention;

FIG. 3 is a cross-sectional view of the present invention taken along a cross-section of a cylinder;

FIG. 4 is a schematic diagram of a magnetic field assembly according to the present invention;

FIG. 5 is an enlarged view of A in FIG. 4;

FIG. 6 is a schematic diagram of a variation assembly according to the present invention;

FIG. 7 is a perspective view of the main shaft of the present invention with an indicator wire at the drive end;

FIG. 8 is an enlarged view of B in FIG. 7;

FIG. 9 is a schematic view of the distance between the permanent magnet and the drum wall as the spindle rotates;

FIG. 10 is an overall perspective view of the driven end of the spindle with an angle sensor of the present invention;

FIG. 11 is an enlarged view of C in FIG. 10;

FIG. 12 is a perspective view of the main shaft of the present invention with a locking element at the drive end;

fig. 13 is an enlarged view of D in fig. 12;

fig. 14 is a flow chart of an embodiment of the present invention.

Description of the reference numerals

1. A working groove; 2. a roller; 3. a magnetic field assembly; 4. a bracket; 5. a sampling assembly; 51. a sampler; 11. a tailings pipeline; 12. a concentrate tank; 13. a scraper; 131. a water tap; 132. a partition plate; 31. a main shaft; 32. an adjustment module; 311. an indication line; 312. an angle sensor; 313. a first scale line; 314. a first indication line; 315. a locking piece; 3121. a detection end; 3122. a body; 321. a permanent magnet; 322. a connecting piece; 323. a change component; 3221. a first connector; 3222. a second connector; 3223. a horizontal cross beam; 3224. an auxiliary limiting member; 3225. a rolling member; 3231. a right member; 3232. a left member; 3233. an external thread; 41. graduation marks.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 14, the following specific embodiments of the present invention are provided:

example 1:

as shown in fig. 1-6, a system for the instantaneous adjustment of a magnetic field based on monitoring of a production process, comprising,

a working groove 1, a roller 2 and a magnetic field assembly 3;

the magnetic field assembly is positioned in the roller, the roller is positioned in the working groove, the magnetic field assembly and the roller rotate asynchronously, and the magnetic field assembly is provided with n adjustable magnetic fields;

the sampling assembly 5, the detection assembly and the adjusting assembly;

the sampling assembly is used for respectively collecting target substances obtained by magnetic separation of n adjustable magnetic field areas as samples to be detected, the detection assembly is used for detecting the purity of the target substances in the n samples to be detected and calculating one adjustable magnetic field corresponding to the samples to be detected, the purity of the target substances of which is greater than a purity threshold value, as a target magnetic field, the adjustment assembly is provided with a synchronous adjustment assembly and an asynchronous adjustment assembly, the synchronous adjustment assembly can be used for adjusting the n adjustable magnetic fields as the target magnetic field, the asynchronous adjustment assembly can be used for adjusting the n adjustable magnetic fields as different magnetic field intensities, and n is an integer greater than 1;

wherein, n samples to be detected that sampling assembly 5 gathered and n adjustable magnetic fields one by one.

When extracting high-purity resource substances from red mud, one of the mainstream fine screening methods is a magnetic separation method, which is a method for separating objects by using the principle of a magnetic field, and magnetic substances are separated from non-magnetic substances by using the acting force of the magnetic field. However, because the red mud raw materials and the intermediate materials used for separation have different component contents, mineral compositions, ore vein structures, arrangements and other factors, the red mud raw materials or the intermediate materials used for separation have different areas and different batches, and the technological process of fixing parameters has great limitation on the grade and quality improvement contribution of obtaining valuable resources. For example, in the production process, the accuracy of the target substance obtained by the fixed-parameter process cannot be adjusted, i.e. only the mineral substance fed can be adjusted, or the target substance after the production is processed in the next step, but the system in the process production cannot be adjusted, so that the processing efficiency is very low.

For example, the same red mud raw material is subjected to magnetic separation by using a type A magnetic separator and a type B magnetic separator to extract fine iron powder, wherein the type A magnetic separator and the type B magnetic separator only have different magnetic field intensities, the precision of the type A magnetic separator for extracting the fine iron powder is 89%, and the precision of the type B magnetic separator for extracting the fine iron powder is 92%; but for another identical red mud raw material, the precision of the refined iron powder extracted by the A-type magnetic separator is 92%, and the precision of the refined iron powder extracted by the B-type magnetic separator is 89%; therefore, the extraction precision of target substances in different red mud raw materials has strong correlation with the magnetic strength and the magnetic field strength of non-target substances. The accuracy in the magnetic separation process indicates the purity of the target substance, and for this purpose, it is very valuable to provide an immediate magnetic field regulating system based on production process monitoring.

In this embodiment, the present application may sample the concentrate obtained in the ongoing magnetic separation process, adjust the plurality of adjustable magnetic fields to different magnetic field intensities before sampling, collect the target substance obtained by magnetic separation in n different magnetic field areas as a sample to be detected, then detect the purity of the target substance in n samples to be detected by the detection component, calculate the adjustable magnetic field corresponding to the sample with the highest purity of the target substance as the target magnetic field, and finally adjust the n adjustable magnetic fields to the target magnetic field by the adjustment component, thereby realizing the magnetic field instant adjustment based on the production process.

In another alternative embodiment, the present application samples concentrate obtained by performing magnetic separation, the detecting component detects whether the purities of the n sampling components all meet the requirement, if all meet the requirement, the original production is maintained, if not, the magnetic field strength of the magnetic field component is corrected, the correction includes sampling, detecting and adjusting, firstly, the n adjustable magnetic fields are adjusted to different magnetic field strengths, the target substance obtained by magnetic separation in n different magnetic field areas is collected as a sample to be detected, then, the detecting component detects the purities of the target substance in the n samples to be detected, the adjustable magnetic field corresponding to the sample with the target substance purity meeting the requirement is calculated as a target magnetic field, finally, the adjusting component adjusts all the n adjustable magnetic fields as target magnetic fields, wherein the target magnetic fields may have 0 or more, when the target magnetic field is 0, the correction is performed according to the detection result until the target magnetic field is obtained, and if the target magnetic field has a plurality of target magnetic fields, one or the adjustable magnetic field corresponding to the highest purity is selected as the target magnetic field according to the actual production requirement. The time interval of sampling can be fixed time also can be change time, and this application detects the purity of concentrate through periodic or aperiodic sampling, can reach the monitoring effect in the production process, in time corrects after detecting that the precision does not satisfy the requirement, has realized the magnetic field instantaneous adjustment based on the production process control, has improved magnetic separation efficiency greatly, has increased the magnetic separation precision of target substance.

It should be noted that the detection component is detachably connected with the working groove, and the method for detecting the content of the target substance by the detection component can be various, including a chemical analysis method, an X-ray diffraction method, a heavy magnetic separation method, an inductively coupled plasma emission mass spectrometry method, a thermogravimetric method, an X-ray fluorescence method, and the like, and in one embodiment, the detection component adopts the X-ray diffraction method, and can take 2-5 minutes to obtain a detection result, so that the effects of monitoring and timely regulation can be achieved.

Example 2:

as shown in fig. 1-9, a working groove 1, a roller 2 and a magnetic field assembly 3;

wherein the magnetic field assembly 3 is positioned in the roller 2, the roller 2 is positioned in the working groove 1, and the magnetic field assembly 3 and the roller 2 rotate asynchronously around the same axis; it should be noted that there may be various connection manners between the magnetic field assembly and the roller, and in one embodiment, the magnetic field assembly is fixedly connected to the bracket, the rotating shaft of the magnetic field assembly is connected to the roller through a bearing, and the bracket provides a supporting force for the magnetic field assembly and the roller, so that the roller can rotate while the magnetic field assembly is not moving. In another alternative embodiment, the magnetic field assembly is fixedly connected with the first bracket, the roller is connected with the second bracket, the first bracket provides supporting force for the magnetic field assembly, the second bracket provides supporting force for the roller, the roller does not generate force with the magnetic field assembly and the first bracket when rotating, and the roller can rotate and the magnetic field assembly does not move.

The magnetic field assembly 3 is provided with a main shaft 31 and n permanent magnets 321, the adjusting assembly is provided with n adjusting modules 32, each adjusting module is provided with a changing assembly 323 and a connecting piece 322, and the n permanent magnets are respectively connected with the n adjusting modules in a one-to-one correspondence manner through the n connecting pieces;

wherein, the changing component 323 has an hourglass-shaped external thread 3233 structure, the changing component 323 can be divided into a left component 3232 and a right component 3231 by taking the cross section of the position with the smallest diameter of the external thread 3233 as a tangent plane, the threads of the left component 3232 and the right component 3231 are the same, n changing components 323 are fixedly sleeved on the main shaft 31 in the same direction, the thread rise angles of the left component 3232 are the same, the thread rise angles of n right components 3231 are distributed in a gradient manner, the permanent magnet 321 is fixedly connected with the connecting piece 322, and the connecting piece 322 is movably connected with the external thread 3233 of the changing component 323; when the spindle 31 drives the external thread 3233 to rotate, the connecting piece 322 moves in the groove of the external thread 3233, so that the rotary motion of the spindle 31 is converted into the up-down motion and the horizontal motion of the connecting piece 322, and the permanent magnet 321 is fixedly connected with the connecting piece 322, so that the purpose of adjusting the height of the permanent magnet 321 by rotating the spindle 31 can be achieved, and the distance between the permanent magnet 321 and the wall of the roller 2 can be changed by rotating the spindle 31 due to the fact that the position of the rotating shaft of the roller 2 is unchanged, so that the magnetic field intensity of a separation area in the working groove 1 is changed.

The working tank 1 is provided with a scraper 13, the highest end of the scraper 13 is close to the roller 2 at the tail end of the magnetic field region, a water tap 131 above the scraper 13 is opposite to the surface of the roller 2, n-1 separation plates 132 are arranged on the surface of the scraper 13, the separation plates 132 are used for separating target substances in n permanent magnet 321 regions, magnetic substances adsorbed by the permanent magnet 321 regions rotate to a weak magnetic region along the roller 2 and then are washed by water to fall on the scraper 13, and the separation plates 132 on the scraper 13 separate the target substances obtained in n magnetic field regions, so that the sampler is convenient for collecting samples respectively.

The end face of the main shaft 31 driving end is provided with an indication line 311, the bracket 4 is provided with scale lines 41 matched with the indication line 311, and the scale lines 41 are in one-to-one correspondence with the (n+1) groups of thread lead angles of the fluctuation component 323. The thread lead angles of the graduation marks 41 and the left component 3232 have a one-to-one correspondence of 1 group, and the thread lead angles of the graduation marks 41 and the n right components 3231 have a one-to-one correspondence of n groups.

In the existing magnetic separation system, when coarse mineral slurry is conveyed to one end of a working groove, the coarse mineral slurry enters a separation area in a suspension state under the action of blowing water, magnetic mineral particles are attracted onto the surface of a roller under the action of magnetic field force of a magnetic system, and move upwards along with the roller, and non-magnetic particles mixed in the magnetic mineral particles are separated in the moving process. In this embodiment, the working tank 1 is used for containing coarse mineral slurry to be separated, providing a place for separating materials, the bottom of the working tank 1 is connected with a tailing pipeline 11, the tailing pipeline 11 is used for transporting the tailing slurry, when magnetic substances are transferred to a region with weaker magnetic field by the drum 2, water is sprayed to the magnetic substances on the surface of the drum 2 through the water faucet 131, the magnetic substances are washed by water due to weakening of magnetism, and then the dropped magnetic substances flow into the concentrate tank 12 along the scraping plate 13.

Specifically, in the actual production process, before sampling, the main shaft starts to rotate from a standard position, so that distances between n permanent magnets and the roller wall are different, the standard position is the position of a 0 scale mark corresponding to an indication line of the main shaft when the connecting piece is connected with the position with the minimum diameter of the external thread, and the direction and the angle of the main shaft rotation are recorded through the indication line of the end face of the driving end of the main shaft and the corresponding scale mark. And then carrying out magnetic separation in a sampling stage, respectively collecting target substances in n permanent magnet areas from the scraping plate after a period of time, carrying out precision detection on the collected target substances, obtaining parameters of a fluctuation assembly corresponding to the permanent magnet area with the highest precision of the detected target substances, and calculating a synchronous rotation target angle by combining the rotation direction and angle of the main shaft. And rotating the main shaft back to the standard position, and then rotating the target angle in the opposite direction, namely adjusting the n adjusting modules to be consistent, and then carrying out magnetic separation in the production stage, so as to adjust the magnetic field intensity of the magnetic separation, and ensure that the accuracy of the extracted target substance reaches a higher level. It should be noted that, in a production process, one or more adjustments may be performed, where the duration of the adjustment interval and the number of adjustments depend on the actual situation. In one embodiment, sampling detection adjustment is performed every 2h interval, so that consistency of the extracted target substances can be ensured.

Regarding the adjustment of the adjusting component, specifically, the rotation of the main shaft may be motor driving or manual rotation by a handle, in one embodiment, the main shaft is driven by the motor, so that the rotating angle and the rotating direction of the main shaft can be known, before the main shaft is rotated, the main shaft is kept at a standard position, that is, the indication line of the main shaft points to the 0 scale line position, when the main shaft is at the standard position, the main shaft rotates anticlockwise to enable the connecting piece to enter the external thread groove of the left part, and rotates clockwise to enable the connecting piece to enter the external thread groove of the right part, and because the thread lift angles of the left part are the same, the n thread lift angles of the right part are distributed in a gradient manner, so that the main shaft can rotate anticlockwise at the standard position to synchronously adjust the distance between the permanent magnets and the drum wall, and the clockwise rotation is asynchronous adjustment of the distance between the n permanent magnets and the drum wall.

In one embodiment, during sampling detection, the distances between n permanent magnets and the roller wall are asynchronously adjusted by rotating the main shaft clockwise, target substances are respectively collected after magnetic separation is carried out for a period of time, the accuracy of the target substances is detected, a change component corresponding to the target substances with the highest separation accuracy is found out, then the angle Q1 needing synchronous adjustment is calculated through the corresponding relation among the rotating angle, the rotating direction and the external thread structure of the change component of the main shaft, the main shaft is rotated back to the standard position, then the n adjusting components are synchronously adjusted by rotating the main shaft anticlockwise by the angle Q1, the distances between the n permanent magnets and the roller wall are all optimal distances, and the magnetic field real-time adjustment based on production process monitoring is realized, so that the accuracy of magnetic separation is effectively improved.

Specifically, regarding the method for calculating the synchronous adjustment angle, in one embodiment, there are 6 adjustment modules, the lead angles of the right component of the 6 adjustment modules are A1, A2, A3, A4, A5, A6, respectively, the lead angle of the left component is B, D represents the distance between the permanent magnet and the drum wall when the spindle rotates counterclockwise from the standard position by an angle q°, and D1, D2, D3, D4, D5, D6 represent the distance between each permanent magnet and the drum wall when the spindle rotates clockwise from the standard position by an angle q°, as shown in fig. 9, the corresponding relationship respectively satisfied is: d=f (B, -Q), d1=f (A1, Q), d2=f (A2, Q), d3=f (A3, Q), d=f (A4, Q), d5=f (A5, Q), d6=f (A6, Q), wherein F () is a function of the calculated distance. When the spindle rotates the needle asynchronously, sampling detection precision is carried out, the highest precision of a target substance corresponding to a third adjusting component is detected, then an angle of the synchronous adjusting spindle which needs to rotate anticlockwise can be calculated, the angle is taken as a target angle Q1, D=D3, F (A3, Q) =F (B, -Q1) is obtained, the value of Q1 can be solved, namely, the optimal distance D0 between the permanent magnet and the roller wall is obtained, the specific functional relation is shown in fig. 7, the abscissa represents the angle Q of spindle rotation, the positive value represents the rotation direction of rotation direction position asynchronous adjustment, the negative value represents the rotation direction of rotation direction position synchronous adjustment, and the ordinate represents the distance between the permanent magnet and the roller wall under different functions. d0 represents the distance between the permanent magnet and the roller wall when the main shaft is positioned at the standard position, d0 is not less than 0, and d1 and d2 respectively represent the distance between the permanent magnet and the roller wall in the process of adjusting the main shaft. Wherein the distance between the synchronous adjusting permanent magnet and the drum wall is not less than the maximum value of the distance between the asynchronous adjusting permanent magnet and the drum wall.

It should be noted that the number n of the adjusting modules is set according to the specific situation, the preferred value range of n is 6-8, the preferred value range of the thread lead angle of the right component is 5-45 degrees, and the preferred value range of the thread lead angle of the left component is 10-35 degrees. For example, the thread lead angles of the 6 right members are distributed in a gradient, for example, the thread lead angles of the 6 right members are 5 °, 10 °, 15 °, 20 °, 25 °, 30 ° in order, and the thread lead angle of the left member is 15 °. The maximum torsion angle of the spindle is QM, and the connection member can move between the male screw grooves when the rotation angle of the spindle is between QM.

In the working process of magnetic separation, the application makes the distance between n permanent magnets and the roller wall different through adjusting the adjusting module, detects the precision of the target material of different regional production respectively, then feeds back the result of detection to the adjusting module, adjusts the adjusting module to reach the adjustable purpose of magnetic field in the production process, on the one hand this application adjusts magnetic separation system, can obtain the target material of different precision and grade, improves magnetic separation system's work efficiency. On the other hand, the magnetic separation system is adjusted according to detection results and actual demands by interval sampling detection or periodic sampling detection in the production process, and the magnetic separation system can monitor and timely adjust the production process, so that the extraction precision of target substances is greatly improved.

Example 3:

as shown in fig. 3, the sampling assembly 5 has n samplers 51 under the squeegee 13, and the samplers 51 can be used to collect the target substances extracted from the n permanent magnet 321 regions.

In this embodiment, n samplers are used to collect n target substances separated from the magnetic field areas, where the n samplers are located in a position corresponding to the n magnetic field areas one by one during sampling, and when the n samplers are seen along the axis of the drum 2 during sampling, the n sampler corresponds to the n permanent magnet 321. The sampler can have various forms, the sampler can be a movable opening container, the sampler is positioned below the scraping plate 13 for sampling during sampling, and the sampler can be taken down or stored under the scraping plate 13 without obstructing the flow of materials during non-sampling.

Example 4:

the magnetic field assembly 3 has a stopper for preventing the permanent magnet 321 from moving in the axial direction of the spindle 31.

The rotation of the main shaft can enable the connecting piece to move in the vertical direction and also enable the connecting piece to move in the horizontal direction, and the connecting piece is fixedly connected with the permanent magnet, namely the permanent magnet can also move in the vertical direction and the horizontal direction, when the permanent magnet moves in the horizontal direction, the position of each magnetic field area can be changed, so that the target substance entering the sampling is inaccurate, in one case, the target substance collected by the ith sampler is a mixture of the target substances magnetically separated from the ith magnetic field area and the (i-1) magnetic field area, and finally, the magnetic separation precision after synchronous adjustment is reduced.

In this embodiment, the locating part is used for preventing the permanent magnet to remove in the axial direction of main shaft, has promoted the rate of accuracy of gathering the collection material of collection sample, has increased the credibility of regulation.

In an alternative embodiment, the magnetic field assembly has a limit stop secured to the spindle between two adjacent adjustment assemblies by bearings, the limit stop being rotatable about the spindle but not movable on the axis, the end of the limit stop remote from the spindle separating adjacent permanent magnets.

In another alternative embodiment, the magnetic field assembly has a stopper fixed on the spindle between two adjacent adjustment assemblies by a bearing, the stopper being rotatable about the spindle but not movable on the axis, one end of the stopper remote from the spindle separating the adjacent connectors, the stopper being adapted to prevent movement of the connectors in the direction of the axis of the spindle.

Example 5:

as shown in fig. 4-5, the connecting member 322 has a first connecting member 3221, a second connecting member 3222, and an auxiliary stopper 3224;

the middle part of the second connecting piece 3222 is provided with a horizontal cross beam 3223, the upper end of the first connecting piece 3221 is in matched connection with the external thread 3233, and the lower end of the first connecting piece 3221 is movably sleeved with the horizontal cross beam 3223 through a rolling piece, so that the upper end of the rolling piece 3225 is extruded with the lower end of the horizontal cross beam 3223;

the lower end of the second connecting piece 3222 is fixedly connected with the permanent magnet 321, the upper end of the second connecting piece 3222 is provided with two parallel side plates with connecting holes, the main shaft 31 passes through the connecting holes in a non-contact mode, the changing assembly 323 is located between the two side plates, the auxiliary limiting piece 3224 is located between the adjacent changing assembly 323 and the side plates, the auxiliary limiting piece 3224 is attached to the side face where the side plates are located, and the auxiliary limiting piece 3224 is connected with the main shaft 31 through a bearing, so that the auxiliary limiting piece 3224 can rotate around the axis of the main shaft 31.

In this embodiment, the rolling member 3225 may roll relative to the first connecting member, and the rolling member may be in the form of a roller, a bearing, or the like, for example, the lower end of the first connecting member is movably connected with the horizontal beam through a roller with a bearing, so that the roller is pressed against the lower surface of the horizontal beam; specifically, the lower extreme fixedly connected with bearing of first connecting piece, the inner ring of bearing is passed to first connecting piece, and the outer loop of bearing is fixed the cover again on the interior survey face of gyro wheel for first connecting piece cup joints with horizontal crossbeam, and when the both ends connection change subassembly and permanent magnet of connecting piece, the upper surface of gyro wheel produces the extrusion with horizontal crossbeam lower surface. And two parallel side plates at the upper end of the second connecting piece are attached to the auxiliary limiting piece, so that the second connecting piece can be prevented from moving on the axis of the main shaft, and the limiting effect is achieved. And the connecting hole is not contacted with the main shaft, namely, when the main shaft rotates, the second connecting piece is always in the vertical direction due to the gravity of the permanent magnet. The first connecting piece and the external thread groove of the change assembly are matched and rotate, so that the rotary motion of the main shaft is converted into the horizontal motion and the up-down motion of the first connecting piece, and the horizontal cross beam is used for enabling the first connecting piece and the horizontal cross beam to generate horizontal displacement, so that the upper position and the lower position of the permanent magnet are changed, and the connecting piece can effectively prevent the permanent magnet from moving in the axial direction of the main shaft.

Further, the larger the attaching area of the parallel side plates, the more stable the connecting piece, and the shape of the limiting piece can be rectangle, round, square, etc. according to practical situations, and the thickness of the limiting piece is larger than that of the parallel side plates without specific limitation.

Example 6:

as shown in fig. 10-11, the driven end of the spindle 31 has an angle sensor 312, and the angle sensor 312 is used to detect the angle of torsion of the driven end of the spindle 31.

Because the main bearing receives the gravity of permanent magnet and resistance etc. of bearing, long-term regulation magnetic core to the distance between the magnetic field makes the main shaft by torsional deformation easily, after torsional deformation takes place for the main shaft, on the one hand, can make the distance between permanent magnet and the cylinder wall become the size different, and the magnetic field intensity in different regions is different, can lead to the type of the magnetic substance that the cylinder surface adsorbed to increase, for example, after the cylinder surface magnetic field intensity is strong, adsorbed the weak magnetic substance that should not adsorb, leads to the accuracy of magnetic field regulation to reduce, and then reduced the target substance precision of extracting. On the other hand, the long-term torsional deformation of the main shaft is not found and updated in time, and once the main shaft breaks, the whole magnetic separation system is extremely easy to discard.

For this reason, in the present embodiment, an angle sensor is mounted on the driven end of the spindle, the detection end of the angle sensor is fixedly connected to the spindle, the detection end 3121 is used for detecting the rotation angle of the spindle, and the body 3122 of the sensor is fixedly connected to the bracket. When the main shaft is rotated, the angle deflection data R1 of the driven end of the main shaft is obtained through the angle sensor, and then the obtained angle deflection data R1 is compared with the angle deflection data R2 of the driving end, so that the torsion condition of the main shaft is obtained through comparison. When R1 and R2 are the same, no torsion occurs when the spindle is rotated, and when R1 and R2 are different, torsion occurs when the spindle is rotated. The rotation angle of the main shaft driving end can be detected by an angle sensor, and can also be obtained by working parameters of the second motor. The torsion condition of the main shaft can be timely detected, and accuracy of adjustment accuracy and magnetic substance separation is guaranteed.

Example 7:

as shown in fig. 10-11, the driven end of the spindle 31 has a first indication line 314, and the bracket 4 has a first scale line 313 that cooperates with the first indication line 314.

The torsional deformation of the main shaft is often a gradual and cumulative process, and the main shaft is not twisted particularly much at a time, and when the main shaft is twisted, an angle sensor can detect a torsional deflection angle, for example, 0.5 degrees to 1 degrees, and can timely detect the torsion condition of the main shaft. However, when the deviation between the driving end and the driven end is smaller during each torsion, the angle sensor cannot detect data due to the limited resolution ratio detected by the angle sensor, but the torsion amount of the main shaft does exist, gradually increases, and finally the main shaft is twisted and cannot be detected through the angle sensor, so that when the main shaft is in a standard position, the positions of all the adjusting modules deviate, the adjusting effect is poor, even the adjusting fails, and the accuracy of extracting magnetic substances is seriously reduced.

In the present embodiment, by providing the first graduation mark 313 on the driven end of the spindle 31, the indication line 311 of the spindle 31 in the initial state is aligned with the 0 graduation mark of the first graduation mark 313, and when the driving end of the spindle 31 returns to the initial position, the torsion condition of the spindle 31 is judged by observing the positional relationship between the indication line 311 of the driven end and the 0 graduation mark. That is, when the driving end of the main shaft 31 returns to the initial position, the overlapping of the indication line 311 of the driven end and the 0 scale line of the first scale line 313 indicates that the main shaft 31 is not torsionally deformed, and the non-overlapping of the indication line 311 of the driven end and the 0 scale line of the first scale line 313 indicates that the main shaft 31 is torsionally deformed. The torsion condition of the main shaft 31 can be detected in real time, and the influence of the torsion of the main shaft 31 on the system separation precision is effectively avoided.

It should be noted here that the present application may be used in combination with an angle sensor.

Example 8:

as shown in fig. 12-13, the drive end of the spindle 31 has a catch member 315, the catch member 315 being adapted to prevent rotation of the spindle 31.

When the spindle is required to be operated, the locking piece can lock the spindle in a clamping nut, a tensioning nut, a through hole bolt, a positioning nut, a parallel key and the like, so that stability and reliability of the spindle in the working process are ensured, and the spindle is not particularly limited.

Example 9:

as shown in fig. 14, the method for instantly adjusting the magnetic field based on the monitoring of the production process comprises an instantly adjusting system for the magnetic field based on the monitoring of the production process, specifically comprising the following steps,

s1: the system works to respectively produce concentrate and tailings;

s2: in the sampling stage, the main shaft is rotated to adjust the adjusting system, so that the distances between the n permanent magnets and the roller wall are different, the rotation direction and the rotation angle of the main shaft are recorded, and the sampler respectively collects the extracted target substances of the n permanent magnet areas; in one embodiment, the direction and the angle of rotation of the main shaft driving end are obtained through a measuring tool, wherein the direction and the angle are determined relative to the standard position of the main shaft, the initial position of the main shaft, namely the main shaft, is at the standard position, the connecting piece enters the external thread groove of the left part by rotating anticlockwise, the connecting piece enters the external thread groove of the right part by rotating clockwise, and the main shaft can be rotated anticlockwise at the standard position to synchronously adjust the distance between the permanent magnets and the roller wall, and the distance between n permanent magnets and the roller wall can be adjusted asynchronously by rotating clockwise. After the distance between the permanent magnet and the roller wall is adjusted, the separation is started, and sampling is carried out when uniform target substances are collected at the scraper.

S3: in the detection stage, the accuracy of detecting the target substances is respectively carried out on the target substances acquired by the n samplers; the method for detecting the content of the target substance can be a chemical analysis method, an X-ray diffraction method, a heavy magnetic separation method, an inductively coupled plasma emission mass spectrometry method, a thermogravimetric method, an X-ray fluorescence method and the like, and in one embodiment, the detection result can be obtained after taking 2-5 minutes by adopting the X-ray diffraction method.

S4: and in the adjusting stage, the permanent magnet area with the highest target substance precision is found to be the preferable permanent magnet area, the parameters of the preferable permanent magnet area and the variable component are combined to obtain the target distance between the permanent magnet and the roller wall, the main shaft is adjusted to enable the distances between the permanent magnets of the n adjusting components and the roller wall to be the target distance, and the target substance is extracted. In one embodiment, during sampling detection, the distances between n permanent magnets and the roller wall are asynchronously adjusted by rotating the main shaft clockwise, target substances are respectively collected after magnetic separation is carried out for a period of time, a preferred change component corresponding to the target substance with highest separation precision is found out, then the angle Q1 needing synchronous adjustment is calculated through the corresponding relation between the angle Q rotated by the main shaft and the external thread structure of the preferred change component, after the main shaft is rotated back to the standard position, the n adjusting components are synchronously adjusted by rotating the main shaft anticlockwise, the distances between the n permanent magnets and the roller wall are all optimal distances, so that the effect of timely adjusting and controlling the magnetic field monitored in the production process is achieved, and the magnetic separation precision is effectively improved.

Further, the magnetic separation process mainly comprises two steps, wherein a motor is electrified to enable a roller to start rotating, and a faucet switch is opened to spray water towards the wall of the roller; the ore pulp is sent into a trough, water is conveyed to the feed trough through a water conveying end, tailings are discharged through a tailings pipeline, and concentrate is collected in a concentrate trough.

In describing embodiments of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "horizontal," "bottom," "inner," "outer," and indicated orientation or positional relationship are to be construed broadly, and that the terms "mounted," "connected," and "connected" should be construed broadly, e.g., as either a fixed connection, a removable connection, or an integral connection, unless explicitly stated or limited otherwise; the specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the description of embodiments of the invention, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples. In describing embodiments of the present invention, it will be understood that the term "ranges is intended to be inclusive of the recited range of values. For example, "A-B" means a range greater than or equal to A and less than or equal to B. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. An instantaneous magnetic field regulation system based on production process monitoring, characterized by comprising,

a working tank, a roller and a magnetic field assembly;

the magnetic field assembly is positioned in the roller, the roller is positioned in the working groove, the magnetic field assembly and the roller rotate asynchronously, and the magnetic field assembly is provided with n adjustable magnetic fields;

the device comprises a sampling assembly, a detection assembly and an adjusting assembly;

the sampling assembly is used for respectively collecting target substances obtained by magnetic separation of n adjustable magnetic field areas as samples to be detected, the detection assembly is used for detecting the purity of the target substances in the n samples to be detected and calculating one adjustable magnetic field corresponding to the samples to be detected, the purity of the target substances of which is greater than a purity threshold value, as a target magnetic field, the adjustment assembly is provided with a synchronous adjustment assembly and an asynchronous adjustment assembly, the synchronous adjustment assembly can be used for adjusting the n adjustable magnetic fields as the target magnetic field, the asynchronous adjustment assembly can be used for adjusting the n adjustable magnetic fields as different magnetic field intensities, and n is an integer greater than 1;

the n samples to be detected collected by the sampling component are in one-to-one correspondence with the n adjustable magnetic fields.

2. The production process monitoring-based magnetic field instantaneous regulation system of claim 1 wherein,

the magnetic field assembly is provided with a main shaft and n permanent magnets, the adjusting assembly is provided with n adjusting modules, each adjusting module is provided with a changing assembly and a connecting piece, and the n permanent magnets are correspondingly connected with the n adjusting modules one by one through the n connecting pieces;

the variable component is of an external thread structure with small middle and large two ends, the variable component can be divided into a left component and a right component by taking the cross section of the part with the smallest external thread diameter as a tangent plane, the threads of the left component and the threads of the right component are the same in direction, n variable components are fixedly sleeved on the main shaft in the same direction, the thread lead angles of the left component are the same, the thread lead angles of n right components are distributed in a gradient manner, the permanent magnets are fixedly connected with the connecting piece, and the connecting piece is movably connected with the external threads of the variable component;

the working groove is provided with a scraper plate, and the scraper plate surface is provided with (n-1) separation plates which are used for separating target substances in n adjustable magnetic field areas.

3. The production process monitoring based magnetic field instantaneous tuning system of claim 2 wherein the magnetic field is controlled by a control unit,

the end face of the main shaft driving end is provided with an indication line, the support is provided with scale lines matched with the indication line, and the scale lines are in one-to-one correspondence with the (n+1) groups of screw thread rising angles of the change assembly.

4. The production process monitoring-based magnetic field instantaneous regulation system of claim 3 wherein,

the sampling assembly has n samplers operable to collect n target substances extracted from the tunable magnetic field regions.

5. The production process monitoring-based magnetic field instantaneous adjustment system of claim 4 wherein the magnetic field is adjusted,

the connecting piece is provided with a first connecting piece, a second connecting piece and an auxiliary limiting piece;

the middle part of the second connecting piece is provided with a horizontal cross beam, the upper end of the first connecting piece is connected with the external thread in a matched manner, and the lower end of the first connecting piece is movably sleeved with the horizontal cross beam through a rolling piece, so that the upper end of the rolling piece is extruded with the lower end of the horizontal cross beam;

the lower extreme and the permanent magnet fixed connection of second connecting piece, the upper end of second connecting piece have two parallel curb plates of taking the connecting hole, and the main shaft contactless passes the connecting hole, and the change subassembly is located between the both sides board, and auxiliary limiting piece is located between adjacent change subassembly and the curb plate, and auxiliary limiting piece is laminated with the side at curb plate place, and auxiliary limiting piece passes through the bearing and is connected with the main shaft for auxiliary limiting piece can rotate around the axis of main shaft.

6. The production process monitoring based magnetic field instantaneous tuning system of claim 5 wherein,

the driven end of the spindle has an angle sensor for detecting the angle of twist of the driven end of the spindle.

7. The production process monitoring based magnetic field instantaneous tuning system of claim 6 wherein,

the driven end of the spindle is provided with a first indication line, and the bracket is provided with a first scale line matched with the first indication line.

8. The production process monitoring based magnetic field instantaneous tuning system of claim 7 wherein,

the main shaft driving end is provided with a locking piece which is used for preventing the main shaft from rotating.

9. The magnetic field instant regulating method based on the production process monitoring comprises the magnetic field instant regulating system based on the production process monitoring as claimed in claim 8, and is characterized by comprising the following steps,

s1: the system works to respectively produce concentrate and tailings;

s2: in the sampling stage, the main shaft is rotated to adjust the adjusting system, so that the distances between the n permanent magnets and the roller wall are different, the rotation direction and the rotation angle of the main shaft are recorded, and the sampler respectively collects the extracted target substances of the n permanent magnet areas;

s3: the detection stage is used for respectively detecting the purity of the target substances acquired by the n samplers;

s4: the method comprises the steps of a regulating stage, namely, finding out one changing component corresponding to a permanent magnet region with the purity of a target substance being greater than a purity threshold value as a target changing component, obtaining a target distance between the permanent magnets and a roller wall by combining the rotation direction and the rotation angle of a main shaft and parameters of the target changing component, and regulating the main shaft so that the distances between n permanent magnets and the roller wall are all target distances;

s5: in the production stage, the main shaft is fixed by the locking piece, tailings are discharged through the tailings pipeline, and concentrate is collected in the concentrate groove.

10. The method for the instantaneous adjustment of a magnetic field based on monitoring of a production process according to claim 9, characterized in that, between step S1 and step S2,

the sampler collects the target substances magnetically separated by the n permanent magnet areas respectively, judges whether the purity of the extracted target substances reaches the target parameters, jumps back to the step S1 if the purity of the extracted target substances reaches the target parameters, and jumps to the step S2 if the purity of the extracted target substances does not reach the target parameters.

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