Automatic ore sampling and sample preparation system and sampling and sample preparation method

Abstract

The invention discloses an automatic ore sampling and sample preparation system and method, and the system comprises a material taking device which is used for sampling ore from an ore conveying line, and a crushing device which is arranged corresponding to the material taking device and is used for receiving and crushing the ore of the material taking device; the division device is arranged at the discharging end of the crushing device and is used for performing division treatment on the crushed ore particles for at least one time; the drying device is arranged at the discharging end of the division device and is used for drying the ore particles, and the sample collecting device is used for collecting the ore particles dried by the drying device. According to the invention, sampling and sample preparation operations can be fully automatically carried out on line, the labor intensity of workers can be reduced, the risk in the production process is greatly reduced, the safety coefficient is improved, the ore sampling representativeness is improved, and the accuracy of subsequent ore detection and analysis can be improved.

Description

Technical Field

[0001] The present application belongs to the technical field of ore processing, and in particular relates to an automatic ore sampling and preparation system and a sampling and preparation method. Background Art

[0002] Ore is a naturally occurring mineral resource with inherently uneven quality. Impurities can also enter the ore during blasting, transportation, loading, and unloading. Ore sampling and analysis is a critical step in mineral exploration, mining, and processing. Its primary purpose is to obtain representative samples through scientific methods and conduct testing to assess the ore's quality, composition, and economic value.

[0003] Currently, the most commonly used sampling and sample preparation method is manual sampling. Specifically, a material cart is manually pushed to the bottom of the ore conveyor line, and large pieces of ore are pushed into the sampling cart using tools. The ore in the cart is then transported to the sampled ore pile. After a sufficient weight of ore is collected (usually several tons), the ore is sent to the crushing mechanism for crushing. Compared to the amount of the entire batch of ore, the sample size is too low and unrepresentative, which can easily lead to misjudgment of ore quality. Therefore, not only is the sampling volume large each time, but multiple samplings are required. This process occupies a large amount of site space, is very labor-intensive, and poses many safety hazards.

[0004] Based on this technical problem, this application solution is proposed. Summary of the Invention

[0005] The embodiments of the present application provide an automatic ore sampling and preparation system and a sampling and preparation method, which can perform sampling and preparation operations online and fully automatically, obtain larger and more ore samples, and thus improve the representativeness of ore sampling.

[0006] In order to solve the above technical problems, the embodiments of the present application disclose the following technical solutions:

[0007] An automatic ore sampling and sample preparation system, comprising:

[0008] A reclaimer, used to sample ore from the ore transport line;

[0009] a crushing device, provided corresponding to the reclaiming device and configured to receive the ore from the reclaiming device and crush it;

[0010] A reduction device is provided at the discharge end of the crushing device and is configured to reduce and process the crushed ore particles at least once;

[0011] A drying device is provided at the discharge end of the reduction device, and is used to collect the ore particles after being reduced by the reduction device, and the drying device dries the ore particles;

[0012] The sample collecting device collects the ore particles dried by the drying device.

[0013] In some embodiments, the material taking device includes:

[0014] A hopper for loading sampled ore;

[0015] a first displacement mechanism adapted to move the hopper between the ore transport line and the feed opening of the crushing device;

[0016] A material taking and lifting module is provided on the first displacement mechanism and is used to lift the material taking hopper;

[0017] The first turning mechanism is arranged on the material taking and lifting module. A material taking hopper is arranged on the turning part of the first turning mechanism. The material taking hopper feeds materials toward the crushing device through the first turning mechanism.

[0018] In some embodiments, the reduction device includes at least one reducer, and the reducer includes:

[0019] A reduction feed hopper, wherein the reduction feed hopper comprises a trough-shaped feed cavity;

[0020] A first material distribution trough grid, wherein a plurality of the first material distribution trough grids correspond to the feed cavity and are spaced apart along the length direction of the feed cavity, and the discharge openings of the plurality of the first material distribution trough grids form a first material distribution opening;

[0021] The material dividing trough grid 2, several material dividing trough grids 2 correspond to the feed cavity, and are distributed at intervals along the length direction of the feed cavity, and the material dividing trough grid 1 and the material dividing trough grid 2 are arranged in sequence, and the discharge ports of several material dividing trough grids 2 form the material dividing port 2.

[0022] In some embodiments, several groups of the reducers are included, and the several groups of the reducers are connected end to end in the flow direction of the ore particles. The feed chamber of the uppermost level of the reducer corresponds to the discharge end of the crushing device, the feed chamber of the lower level of the reducer corresponds to the distribution port 1 or the distribution port 2 of the upper level of the reducer, and the discharge end of the lowermost level of the reducer corresponds to the drying device.

[0023] In certain embodiments, the drying device comprises:

[0024] A receiving tray for loading the crushed stone particles after being reduced by the reduction device;

[0025] The second displacement mechanism is provided with a heating module on the movable end of the second displacement mechanism, and the heating module is adjusted relative to the discharge port of the shrinking device through the second displacement mechanism, and the heating module heats the material loaded on the receiving tray.

[0026] In some embodiments, a transport clamping device is further included, wherein the transport clamping device includes:

[0027] A lifting mechanism is arranged on a fixed body, a support frame is provided on the lifting end of the lifting mechanism, a second flipping mechanism is provided on the support frame, a clamping mechanism is provided on the rotating end of the second flipping mechanism, and the clamping mechanism is used to clamp the receiving tray; the lifting mechanism drives the clamping mechanism to lift and clamp the receiving tray, and dumps the dried gravel particles toward the sample collection device through the second flipping mechanism.

[0028] In certain embodiments, at least one of the following features is included:

[0029] (a) The crushing device comprises: a primary crushing mechanism and a secondary crushing mechanism, in the direction of ore particle transmission, behind the primary crushing mechanism, at least one set of the secondary crushing mechanism is sequentially provided;

[0030] (b) The sample collecting device includes a third displacement mechanism and a sample collecting container provided on the third displacement mechanism, the bottom of the sample collecting container is provided with a weighing module for weighing the gravel sample weight within the sample collecting container;

[0031] (c) Also includes a stirring mechanism, which is arranged above the drying device, and the stirring mechanism is used to stir and disturb the gravel particles in the docking tray.

[0032] An automatic online sampling and preparation method for ore comprises the following steps:

[0033] Sampling ore from an ore conveyor line in a conveying state;

[0034] The sampled ore is fed into a crushing device for at least one stage of crushing;

[0035] The crushed ore is subjected to at least one reduction process to obtain ore particles of a preset weight;

[0036] Drying the ore particles after the reduction process to remove moisture from the ore;

[0037] The dried ore particles were collected as the final sample.

[0038] In some embodiments, during the reduction process, ore particles of a first preset weight are obtained at one time, and ore particles of a second preset weight are obtained after drying, and the ore particles of the second preset weight are the final sample.

[0039] In some embodiments, when sampling ore from an ore transport line, multiple samplings are performed at different times, and the ore after each sampling is crushed, reduced, and dried before being collected to obtain batch samples. Multiple batch samples are mixed and concentrated to obtain a final sample.

[0040] In certain embodiments, the reclaiming hopper is moved to one end of the ore conveying line by a first displacement mechanism, large pieces of ore on the ore conveying line enter the reclaiming hopper, and an initial weight of ore is obtained. The reclaiming hopper containing the ore is displaced above the feed port of the crushing device by the first displacement mechanism, and is fed toward the feed port of the primary crushing mechanism by a first turning mechanism.

[0041] The ore is crushed by the primary crushing mechanism and at least one set of secondary crushing mechanisms, and then transported to the feed port of the reduction device for reduction processing;

[0042] The crushed ore particles enter the reduction feed hopper and are divided by the first and second distribution troughs respectively, and discharged from the first and second distribution ports; the ore particles discharged from the first distribution port are collected and transported to the ore collection area, and the ore particles discharged from the second distribution port enter the next level of the reduction device for further division; this process is repeated until the ore particles of the preset weight are obtained;

[0043] The ore particles after shrinkage enter the receiving tray for drying to remove moisture from the ore particles, and are stirred by a stirring mechanism during the drying process; after drying, the ore particles are located in the receiving tray, and then the lifting mechanism drives the clamping mechanism to clamp the receiving tray, and then the second turning mechanism pours the ore particles in the receiving tray into the sample collection container and weighs them;

[0044] The ore is taken from the ore transport line in multiple batches and the above steps are repeated until an ore sample of a preset weight is obtained.

[0045] One of the above technical solutions has the following advantages or beneficial effects:

[0046] In this technical solution, sampling and sample preparation operations can be performed online in a fully automated manner, reducing or even eliminating manual participation, reducing labor intensity, reducing site space occupied by ore accumulation, and significantly reducing risks in the production process, thereby improving the safety factor.

[0047] In addition, the automated material taking, crushing, shrinking and drying processes can replace the frequent and multiple operations in each process during manual operation, greatly optimizing the process and improving work efficiency.

[0048] The present invention can sample ore from the ore transmission line multiple times and quickly, so the sources of ore samples are more dispersed, and more ore samples can be sampled, thereby improving the representativeness of ore sampling and improving the accuracy of subsequent ore detection and analysis. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0050] Figure 2 It is a top view of the overall structure of the present invention;

[0051] Figure 3 This is a three-dimensional schematic diagram of the present invention excluding the reclaiming device and the ore transmission line;

[0052] Figure 4 It is a three-dimensional schematic diagram of the present invention including a drying device, a transport clamping device and a sample collecting device;

[0053] Figure 5 It is a top view of the present invention including the shrinking device, the drying device, the transport clamping device and the sample collecting device;

[0054] Figure 6 It is a half-section schematic diagram along the AA line of the present invention;

[0055] Figure 7 A schematic diagram of the three-dimensional structure of a group of reducers of the present invention;

[0056] Figure 8 It is a partial enlarged schematic diagram of the drying device and the transfer clamping device of the present invention;

[0057] Figure 9 It is a partial enlarged schematic diagram of the wall cleaning mechanism included in the present invention;

[0058] Figure 10 For the present invention Figure 9 Half-section diagram of . DETAILED DESCRIPTION

[0059] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0060] like Figures 1 to 6 As shown, an automatic ore sampling and preparation system includes:

[0061] The reclaiming device 1 is used to sample ore from the ore transport line 100; wherein the ore transport line 100 is a belt or chain plate conveyor mechanism;

[0062] Crushing device 2 is provided in correspondence with reclaimer 1 and is used to receive and crush the ore from reclaimer 1. The crushed particle size can be adaptively adjusted based on the subsequent ore testing process schedule. The selection of an appropriate crushing device is not specifically limited here. The main purpose of the crushing device is to break large ore into smaller pieces that are convenient for subsequent manual handling or grinding. This only provides initial crushing of the ore; one or more crushing steps may be performed before subsequent grinding.

[0063] The reduction device 3 is arranged at the discharge end of the crushing device 2, and reduces the crushed ore particles at least once; the crushed ore particles are reduced once or multiple times, thereby performing multi-level sampling from a large number of samples, improving the dispersion of the samples, and improving the representativeness of the ore sampling.

[0064] The drying device 4 is provided at the discharge end of the reduction device 3 and is used to collect the ore particles after reduction by the reduction device 3, and the drying device 4 dries the ore particles; since the collected ore generally contains moisture, the drying device can ensure the dryness of the ore particles.

[0065] The sample collecting device 5 collects the ore particles dried by the drying device 4 for subsequent testing or re-crushing, grinding, etc.

[0066] In this technical solution, sampling and sample preparation operations can be performed online in a fully automated manner, reducing or even eliminating manual participation, reducing labor intensity, reducing site space occupied by ore accumulation, and significantly reducing risks in the production process, thereby improving the safety factor.

[0067] In addition, the automated material taking, crushing, shrinking and drying processes can replace the frequent and multiple operations in each process during manual operation, greatly optimizing the process and improving work efficiency.

[0068] This system can sample ore from the ore transmission line multiple times and quickly, so the source of the ore samples is more dispersed, and more ore samples can be sampled, thereby improving the representativeness of the ore sampling and improving the accuracy of subsequent ore detection and analysis.

[0069] like Figure 1 and Figure 2 As shown, the material taking device 1 includes:

[0070] A hopper 11 having an upward opening for loading sampled ore;

[0071] a first displacement mechanism 12 adapted to move the hopper 11 between the ore transport line 100 and the feed port of the crushing device 2;

[0072] The reclaiming lifting module 14 is provided on the first displacement mechanism 12 and is used to lift the reclaiming hopper 11 . The height position of the reclaiming hopper can be adjusted by the reclaiming lifting module for better docking with the ore transmission line 100 .

[0073] The first turning mechanism 13 is provided on the lifting end of the material taking lifting module 14 . A material taking hopper 11 is provided on the turning portion of the first turning mechanism 13 . The material taking hopper 11 feeds materials toward the crushing device 2 through the first turning mechanism 13 .

[0074] The hopper 11 is moved to one end of the ore transport line 100 by the first displacement mechanism 12, and large pieces of ore on the ore transport line 100 fall into the hopper and are weighed for the first time to obtain the initial weight of the ore. The hopper containing the ore is displaced to above the feed port of the crushing device by the first displacement mechanism. The structure of the reclaiming device in this embodiment is simple.

[0075] In some embodiments, the first displacement mechanism 12 includes a guide rail 123, a slide 121 and a pushing mechanism 122. The two ends of the guide rail 123 correspond to the ore transmission line and the feed port of the crushing device 2, respectively. The slide 121 is slidingly arranged on the guide rail 123. The pushing mechanism 122 is a telescopic cylinder, which is fixed relative to the guide rail, and the movable end is connected to the slide 121, which is used to push the slide 121 and the first weighing mechanism 14 and the first flipping mechanism 13 on the slide to displace.

[0076] The reclaiming hopper 11 is hingedly mounted on the lifting end of the reclaiming lifting module. The tilting mechanism 13 is a rotary mechanism, and the rotary end drives the reclaiming hopper 11 to rotate. Alternatively, the tilting mechanism 13 is a telescopic mechanism, such as a telescopic cylinder or a telescopic oil cylinder, one end of which is hinged to the fixed support of the reclaiming lifting module and the other end is hinged to the reclaiming hopper 11, used to drive the reclaiming hopper to rotate within a certain angle range.

[0077] The reclaim hopper 11 can be of specific size and specifications. When the reclaim hopper 11 is full, its weight is approximately equal to the theoretical reclaim weight of the reclaim hopper 11. In addition, a weighing module can be provided between the reclaim hopper 11 and the reclaim lifting module 14 to accurately weigh the gravel in the reclaim hopper 11.

[0078] As attached Figure 6 and attached Figure 7As shown, the reduction device 3 includes at least one reducer, and the reducer includes:

[0079] A reduction feed hopper 33, wherein the reduction feed hopper 33 comprises a trough-shaped feed cavity;

[0080] A material distribution trough grid 1 31, wherein a plurality of the material distribution trough grids 1 31 correspond to the feed cavity and are spaced apart along the length direction of the feed cavity, and the discharge ports of the plurality of the material distribution trough grids 1 31 form a material distribution port 1 310;

[0081] The second dividing trough grid 32, several second dividing trough grids 32 correspond to the feed cavity, and are spaced apart along the length direction of the feed cavity, and the first dividing trough grid 31 and the second dividing trough grid 32 are spaced apart in sequence, and the discharge ports of several second dividing trough grids 32 form a second dividing port 320.

[0082] The first and second trough compartments 31 and 32 are identical in structure, forming a "J"-shaped shell structure. Their feed and discharge ports are not aligned, meaning the discharge port is vertically offset from the feed port. The first and second trough compartments 31 and 32 are mirror images of the feed hopper 33, with the first and second trough compartments 310 and 320 located on opposite sides of the feed hopper 33, thereby diverting the flow of the gravel particles.

[0083] The apparatus comprises several groups of dividers, which are connected end to end in the direction of ore particle flow. The feed chamber of the top-level divider corresponds to the discharge end of the crushing device 2, the feed chamber of the next-level divider corresponds to the first dividing port 310 or the second dividing port 320 of the previous-level divider, and the discharge end of the bottom-level divider corresponds to the drying device. By using multiple groups of dividers, a small portion of a larger amount of ore particles can be separated, which not only provides a larger sample size but also achieves the effect of random sampling, thereby improving the representativeness of the ore sampling.

[0084] The reduction device 3 also includes a flow guide shell 35, which is a shell structure with openings at both ends. In each reducer, the flow guide shell corresponds to the material distribution port that does not need to undergo subsequent reduction operations, that is, the ore particles that do not need to undergo subsequent reduction operations are diverted and discharged to the outside of the reduction device 3, as shown in the attached figure. Figure 6 As shown, the second distribution port of the reduction device 3 is a sampling discharge port that participates in subsequent distribution, and the first distribution port is a non-sampling discharge port that does not participate in subsequent distribution. A guide groove 34 is provided corresponding to the non-sampling discharge port, and a non-sampling conveying mechanism 24 is also provided below the non-sampling distribution port, which is used to convey the ore particles discharged from the non-sampling discharge port to the gravel pile.

[0085] The drying device 4 includes:

[0086] The receiving tray 41 is used to load the crushed stone particles after being reduced by the reduction device 3;

[0087] A second displacement mechanism 42 is provided with a heating module 43 at its movable end. The heating module 43 is adjusted relative to the discharge port of the reduction device by the second displacement mechanism. The heating module 43 heats the receiving tray 41 and the gravel particles within the receiving tray 41, removing moisture from the gravel particles and keeping them dry. The receiving tray 41 is an upwardly-opening container, and its shape is not specifically limited. The second displacement mechanism 42 can be a telescopic mechanism or a screw mechanism, for example.

[0088] The receiving tray 41 on the heating module 43 is driven to move by the second displacement mechanism 42, so that the receiving tray 41 can be moved below the discharge port of the shrinking device or moved out, so as to facilitate the removal of the shrunken gravel particles for drying.

[0089] like Figure 4-6 and Figure 8 As shown, it also includes a transport clamping device 6, which is used to grab the receiving tray 41 and pour the ore particles in the receiving tray 41 into the sample collecting device 5.

[0090] The transport clamping device 6 comprises:

[0091] The lifting mechanism 62 is mounted on the fixed body 60. A support frame 73 is mounted on the lifting end of the lifting mechanism 62. The support frame 73 is a U-shaped plate structure with its opening facing downward. A second turning mechanism 66 is mounted on the support frame 73. A clamping mechanism 64 is mounted on the rotating end of the second turning mechanism 66. The clamping mechanism 64 is used to clamp the receiving tray 41. The lifting mechanism 62 drives the clamping mechanism 64 to lift and clamp the receiving tray 41, and the second turning mechanism 66 is used to dump the dried gravel particles toward the sample collection device 5. After dumping is completed, the second turning mechanism 66 returns to its original position, and the clamping mechanism 64 releases the receiving tray 41, allowing the receiving tray 41 to return to its original position on the heating module 43.

[0092] At least one arm of the support frame is equipped with a clamping mechanism 64. This clamping mechanism 64 is a telescopic mechanism comprising a telescopic member 70 and a chuck 69 mounted at the telescopic end of the telescopic member 70. The chuck's shape matches the shape of the receiving tray 41. The telescopic member 70 can be a telescopic air cylinder, a telescopic oil cylinder, or an electric telescopic rod. The clamping mechanism 64 is mounted on the support frame 73 via a connecting base 63. Two sets of these clamping mechanisms are located on each arm of the support frame.

[0093] The second turning mechanism 66 includes a rotary motor 661 and a turning frame 77 disposed at the rotating end of the rotary motor 661. The turning frame 77 serves as a mounting carrier for the clamping mechanism 64. The rotating end of the turning frame 77 is disposed on the support frame 73. The turning frame 77 includes two sets of symmetrically arranged secondary brackets, one of which is used to mount a telescopic member 70 and a clamp 69.

[0094] More specifically, in this solution, the two secondary supports are fixedly connected by a blocking rod 67, which forms a connecting rod connecting the two secondary supports. At this time, only one set of rotary motors is needed to drive the flip frame 77 to rotate around the axis or flip at a certain angle.

[0095] The rotary motor 662 is also provided with a transmission mechanism at its rotating end, and the flip frame 77 is connected to the rotary motor 662 via the transmission mechanism. The transmission mechanism includes a gear 6622 and a chain 6621. The rotary motor 661 is fixed to the support frame 73. The output end of the rotary motor 661 is provided with a gear 6622. The rotary end of the flip frame 77 is also provided with a gear 6622. The two sets of gears 6622 are connected by a chain 6621.

[0096] A speed reducer is also provided between the output end of the rotary motor 661 and the transmission mechanism.

[0097] The support frame is also provided with a shift rod 67. Before clamping the receiving tray 41, the lifting mechanism drives the clamping mechanism to move downward, and makes the shift rod 67 located above the path of the second displacement mechanism. When the second displacement mechanism drives the receiving tray 41 away from the shrinking device 3, it can limit and block the receiving tray 41, thereby ensuring the accuracy of the subsequent clamping position.

[0098] The support frame 73 is also provided with a rotary brush mechanism, which includes a third lifting mechanism 72 and a mounting seat 74. The mounting seat 74 is slidingly guided up and down between the two arms of the support frame 73. The support frame 73 is provided with a third lifting mechanism 72 for driving the mounting seat 74 to rise and fall. The mounting seat 74 is provided with a rotary brush 71, which is used to clean the gravel and powder remaining on the inner wall of the receiving tray 41 to avoid interference of the residue with subsequent sampling.

[0099] The third displacement mechanism 75 is also included. A sliding seat 61 is provided on the fixed base for guiding sliding. The lifting mechanism is provided on the sliding seat 61. The third displacement mechanism 75 is a telescopic mechanism, such as a telescopic cylinder, which is used to drive the sliding seat 61 to slide on the fixed base, so that the tilting mechanism can be positioned above the second displacement mechanism and on the sample collection device. After tilting is completed, the second flipping mechanism 66 is reset. The third displacement mechanism 75 drives the lifting mechanism 62 and the clamping mechanism 64 to reset to above the second displacement mechanism 42. The second displacement mechanism 42 drives the heating module 43 to move below the receiving tray 41 after tilting is completed. The clamping mechanism 64 releases the receiving tray 41 and allows the receiving tray 41 to return to its original position on the heating module 43.

[0100] The sample collecting device 5 includes a third displacement mechanism 52 and a sample collecting container 51 disposed on the third displacement mechanism 52 . A weighing module is disposed at the bottom of the sample collecting container 51 for weighing the gravel sample in the sample collecting container 51 .

[0101] The device further includes a stirring mechanism 80 , which is disposed above the drying device 4 , and is used to stir and disturb the gravel particles in the docking tray 41 .

[0102] The crushing device 2 includes: a primary crushing mechanism 21 and a secondary crushing mechanism 22. In the direction of ore particle transmission, at least one group of the secondary crushing mechanisms 22 is sequentially arranged behind the primary crushing mechanism 21.

[0103] This embodiment includes two crushing mechanisms: a primary crushing mechanism 21 and a secondary crushing mechanism 22, both of which are jaw crushers. A conveyor 25 is provided at the discharge end of the primary crushing mechanism 21. The conveyor 25 bridges the feed end of the secondary crushing mechanism 22 and the discharge end of the primary crushing mechanism 21. A baffle 23 is also provided on the conveyor 25 to block large pieces of crushed stone from the crushing process.

[0104] After the crushed stone particles are crushed by the primary crushing mechanism 21 and enter the secondary crushing mechanism 22, some of the crushed stone particles will adhere to and clog the inner wall of the second feed bin 220 at the feed port of the secondary crushing mechanism 22, or the crushed stone will accumulate and jam the second feed bin, making it difficult for the crushed stone particles to move downward.

[0105] As attached Figure 9 and attached Figure 10 As shown, a wall cleaning mechanism is correspondingly provided at the feed port of the secondary crushing mechanism 22, and the wall cleaning mechanism is used to remove the gravel stuck on the inner wall of the second feed bin 220 and in the inner cavity of the second feed bin to ensure the smooth transportation of the gravel particles.

[0106] In a specific embodiment, the wall cleaning mechanism includes an air knife 221 provided on the second feed bin 220, and the air knife 221 is located inside or above the feed port. For example, the air knife 22 is provided inside the second feed bin via an air knife mounting plate 222. During the process of transferring the gravel particles to the second feed bin, the air knife 221 continuously blows compressed air into the second feed bin, impacting the gravel particles, thereby preventing the gravel particles from becoming stuck in the second feed bin 22. At the same time, the compressed air from the air knife can also impact the wall of the second feed bin, preventing excessive dust from adhering to the wall.

[0107] In another specific embodiment, the wall cleaning mechanism includes a plurality of air blowing pipes 223 distributed in the second feed bin 220. The air blowing pipes 223 blow air toward the interior of the second feed bin 223 to prevent the gravel particles from getting stuck in the second feed bin 22. At the same time, the blown gas can also impact the wall of the second feed bin to prevent excessive dust from adhering to the wall.

[0108] Preferably, the air blowing pipe 223 can simultaneously introduce a mixed gas and an aqueous solution, which can absorb surrounding dust and reduce dust. At the same time, the mixed airflow of the aqueous solution can wet the gravel particles to a certain extent, reducing the friction between the gravel particles, thereby preventing the gravel particles from getting stuck in the second feed bin.

[0109] Preferably, a needle-tube-type air outlet needle 224 may be further provided at the air outlet end of the air blowing tube 223 to form the gas or gas-liquid mixture or liquid into a jet-like posture, with a stronger and more concentrated impact force.

[0110] An automatic online sampling and preparation method for ore comprises the following steps:

[0111] Sampling ore from the ore transport line 100 in a conveying state;

[0112] The sampled ore is fed into a crushing device for at least one stage of crushing;

[0113] The crushed ore is subjected to at least one reduction process to obtain ore particles of a preset weight;

[0114] Drying the ore particles after the reduction process to remove moisture from the ore;

[0115] The dried ore particles were collected as the final sample.

[0116] In some embodiments, during the reduction process, ore particles of a first preset weight are obtained at one time, and ore particles of a second preset weight are obtained after drying, and the ore particles of the second preset weight are the final sample.

[0117] In some embodiments, when sampling ore from the ore transport line 100, multiple samplings are performed at different times, and the ore after each sampling is crushed, reduced, and dried before being collected to obtain batch samples. Multiple batch samples are mixed and concentrated to obtain a final sample.

[0118] In some embodiments, the reclaiming hopper 11 is moved to one end of the ore conveying line 100 by the first displacement mechanism 12, and the large pieces of ore on the ore conveying line 100 enter the reclaiming hopper and are weighed for the first time (this first weighing can be roughly estimated based on the size of the reclaiming hopper, or can be actually measured by a weighing module on the reclaiming hopper) to obtain an initial weight of the ore. The reclaiming hopper containing the ore is then displaced to above the feed port of the crushing device by the first displacement mechanism, and is fed toward the feed port of the primary crushing mechanism by the first turning mechanism 13.

[0119] The ore is crushed by the primary crushing mechanism and at least one set of secondary crushing mechanisms, and then transported to the feed port of the reduction device for reduction processing;

[0120] The crushed ore particles enter the reducing feed hopper 33 and are divided by the first and second troughs 31 and 32 respectively, and are discharged from the first and second troughs 31 and 320 respectively; the ore particles discharged from the first trough 310 are collected and transported to the ore collection area, and the ore particles discharged from the second trough 320 enter the next level reducer for further division; this process is repeated until the ore particles of the preset weight are obtained;

[0121] The shrunken ore particles enter the receiving tray 41 for drying to remove moisture from the ore particles, and are stirred by a stirring mechanism during the drying process; the dried ore particles are located in the receiving tray 41, and then the lifting mechanism drives the clamping mechanism to clamp the receiving tray 41, and then the ore particles in the receiving tray 41 are poured into the sample collection container 51 by the second flipping mechanism 66 and weighed.

[0122] The ore is taken from the ore transport line in multiple batches and the above steps are repeated until an ore sample of a preset weight is obtained.

[0123] In this technical solution, sampling and sample preparation operations can be performed online in a fully automated manner, reducing or even eliminating manual participation, reducing labor intensity, reducing site space occupied by ore accumulation, and significantly reducing risks in the production process, thereby improving the safety factor.

[0124] In addition, the automated material taking, crushing, shrinking and drying processes can replace the frequent and multiple operations in each process during manual operation, greatly optimizing the process and improving work efficiency.

[0125] This system can sample ore from the ore transmission line multiple times and quickly, so the source of the ore samples is more dispersed, and more ore samples can be sampled, thereby improving the representativeness of the ore sampling and improving the accuracy of subsequent ore detection and analysis.

[0126] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly specified and specifically limited. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0127] The above steps are merely provided to help understand the method, structure, and core concept of the present application. A person skilled in the art may make several improvements and modifications to the present application without departing from the principles of the present application, and such improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. An automatic ore sampling and preparation system, characterized in that: include: A material taking device (1) for sampling ore from an ore transport line (100); A crushing device (2), arranged corresponding to the reclaiming device (1), and used for receiving the ore from the reclaiming device (1) and crushing it; A reduction device (3) is provided at the discharge end of the crushing device (2) and is configured to reduce the crushed ore particles at least once; A drying device (4) is provided at the discharge end of the reduction device (3) and is used to collect the ore particles after reduction by the reduction device (3), and the drying device (4) dries the ore particles; The sample collecting device (5) collects the ore particles dried by the drying device (4).

2. The automatic ore sampling and sample preparation system according to claim 1, characterized in that: The material taking device (1) comprises: A hopper (11) for loading sampled ore; a first displacement mechanism (12) adapted to move the hopper (11) between the ore transport line (100) and the feed opening of the crushing device (2); A material taking and lifting module (14), which is arranged on the first displacement mechanism (12) and is used to lift and lower the material taking hopper (11); A first turning mechanism (13) is provided on the material taking and lifting module (14); a material taking hopper (11) is provided on the turning portion of the first turning mechanism (13); and the material taking hopper (11) feeds material toward the crushing device (2) through the first turning mechanism (13).

3. The automatic ore sampling and sample preparation system according to claim 1, characterized in that: The reduction device (3) comprises at least one reducer, and the reducer comprises: A reduction feed hopper (33), wherein the reduction feed hopper (33) comprises a trough-shaped feed cavity; A material distribution trough grid (31), wherein a plurality of the material distribution trough grids (31) correspond to the feed cavity and are spaced apart and distributed along the length direction of the feed cavity, and the discharge ports of the plurality of the material distribution trough grids (31) form a material distribution port (310); A second material distribution trough grid (32), a plurality of second material distribution trough grids (32) correspond to the feed cavity and are spaced apart along the length direction of the feed cavity, and the first material distribution trough grid (31) and the second material distribution trough grid (32) are spaced apart in sequence, and the discharge ports of the plurality of second material distribution trough grids (32) form a second material distribution port (320).

4. The automatic ore sampling and preparation system according to claim 3, characterized in that: The invention comprises a plurality of groups of the reducers, and the plurality of groups of the reducers are connected end to end in the flow direction of the ore particles, the feed cavity of the uppermost level of the reducer corresponds to the discharge end of the crushing device (2), the feed cavity of the lower level of the reducer corresponds to the distribution port 1 (310) or the distribution port 2 (320) of the upper level of the reducer, and the discharge end of the lowermost level of the reducer corresponds to the drying device.

5. The automatic ore sampling and preparation system according to claim 1, characterized in that: The drying device (4) comprises: a receiving tray (41) for loading the crushed stone particles after being reduced by the reduction device (3); A second displacement mechanism (42) is provided with a heating module (43) on a movable end of the second displacement mechanism (42), and the heating module (43) is adjusted relative to the discharge port of the reduction device by the second displacement mechanism (42), and the heating module (43) heats the material loaded on the receiving tray (41).

6. The automatic ore sampling and sample preparation system according to claim 1, characterized in that: It also includes a transport clamping device (6), which includes: A lifting mechanism (62) is arranged on a fixed body (60); a support frame (73) is arranged on the lifting end of the lifting mechanism (62); a second turning mechanism (66) is arranged on the supporting frame (73); a clamping mechanism (64) is arranged on the rotating end of the second turning mechanism (66); the clamping mechanism (64) is used to clamp the receiving tray (41); the lifting mechanism (62) drives the clamping mechanism (64) to lift and clamp the receiving tray (41), and dumps the dried gravel particles toward the sample collecting device (5) through the second turning mechanism (66).

7. The automatic ore sampling and preparation system according to claim 1, characterized in that: At least one of the following features: (a) The crushing device (2) includes: a primary crushing mechanism (21) and a secondary crushing mechanism (22), wherein at least one set of the secondary crushing mechanisms (22) is sequentially arranged behind the primary crushing mechanism (21) in the direction of ore particle transmission; (b) The sample collection device (5) includes a third displacement mechanism (52) and a sample collection container (51) disposed on the third displacement mechanism (52), and a weighing module is provided at the bottom of the sample collection container (51) for weighing the gravel sample in the sample collection container (51); (c) Also includes a stirring mechanism (80), which is arranged above the drying device (4), and the stirring mechanism (80) is used to stir and disturb the gravel particles in the docking tray (41).

8. A method for automatic online sampling and preparation of ore, characterized in that: An automatic ore sampling and preparation system according to any one of claims 1 to 7 is used. The following steps are involved: Sampling ore from an ore transport line (100) in a conveying state; The sampled ore is fed into a crushing device for at least one stage of crushing; The crushed ore is subjected to at least one reduction process to obtain ore particles of a preset weight; Drying the ore particles after the reduction process to remove moisture from the ore; The dried ore particles were collected as the final sample.

9. The method for automatic online ore sampling and preparation according to claim 8, characterized in that: During the reduction process, ore particles of a first preset weight are obtained at one time, and ore particles of a second preset weight are obtained after drying, and the ore particles of the second preset weight are the final sample; Alternatively, when sampling ore from the ore transport line (100), multiple samplings are performed at different times, and the ore after each sampling is crushed, reduced, and dried before being collected to obtain batch samples, and the multiple batch samples are mixed and concentrated to obtain a final sample.

10. The method for automatic online ore sampling and preparation according to claim 8, characterized in that: The hopper (11) is moved to one end of the ore transport line (100) by a first displacement mechanism (12), and large pieces of ore on the ore transport line (100) enter the hopper to obtain ore of an initial weight. The hopper containing the ore is displaced to above the feed port of the crushing device by the first displacement mechanism, and is fed toward the feed port of the primary crushing mechanism by a first turning mechanism (13); The ore is crushed by the primary crushing mechanism and at least one set of secondary crushing mechanisms, and then transported to the feed port of the reduction device for reduction processing; The crushed ore particles enter the reducing feed hopper (33), and are respectively divided through the said dividing trough grid 1 (31) and the dividing trough grid 2 (32), and are discharged from the dividing port 1 (310) and the dividing port 2 (320); the ore particles discharged from the dividing port 1 are collected and transported to the ore collection area, and the ore particles discharged from the dividing port 2 enter the next level of reducing device for further division; this process is repeated until the ore particles of the preset weight are obtained; The ore particles after shrinkage enter the receiving tray (41) for drying to remove moisture from the ore particles, and are stirred by a stirring mechanism during the drying process; the dried ore particles are located in the receiving tray (41), and then the receiving tray (41) is clamped by a lifting mechanism driving a clamping mechanism, and then the ore particles in the receiving tray (41) are poured into a sample collection container (51) by a second turning mechanism and weighed; The ore is taken from the ore transport line in multiple batches and the above steps are repeated until an ore sample of a preset weight is obtained.

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