Method and system for ore sorting
By using multi-stage screening and sorting methods, combined with X-ray sorting technology, low-grade ore is screened and washed for particle size separation, which solves the problem of unused low-grade ore, improves sorting efficiency and resource utilization, and reduces costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- LONGI OPTICAL SORTING CO LTD
- Filing Date
- 2023-11-28
- Publication Date
- 2026-05-12
AI Technical Summary
Existing technologies cannot effectively separate low-grade ores, resulting in these ores being left unused and increasing transportation and processing costs for businesses.
A multi-stage screening and sorting method is adopted, including raw ore processing, roughing and cleaning steps, combined with X-ray fluorescence separator and X-ray transmission imaging separator, to screen, wash and sort ores of different particle size ranges to ensure that the preset grade is achieved.
It improves the product grade and operational yield of ore sorting, increases the amount of resources available to enterprises, reduces processing costs, realizes the reuse of low-grade ore, and brings economic and social benefits.
Smart Images
Figure CN117443558B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of mineral processing technology, and more specifically, to an ore sorting method and system. Background Technology
[0002] Mineral resources have been mined for decades or even centuries, resulting in a large accumulation of ore that did not meet the required grade and overburden layers from open-pit mining. However, this portion of the ore still contains useful minerals. Utilizing this ore could increase the amount of resources available to the enterprise, and since it does not require blasting or underground transportation, the cost is far lower than mining costs. However, current technology cannot effectively sort this portion of the ore. Summary of the Invention
[0003] In view of this, the present invention proposes an ore sorting method, aiming to solve the problem that existing technologies cannot effectively sort low-grade ores. The present invention also proposes an ore sorting system.
[0004] In one aspect, the present invention proposes an ore sorting method, which includes the following steps: a raw ore processing step, processing the raw ore and screening out ore with a first particle size range, ore with a second particle size range and ore with a third particle size range, and outputting the ore with the first particle size range; a roughing step, processing the ore with the third particle size range to obtain ore smaller than the third particle size range; and a cleaning step, processing the ore smaller than the third particle size range and the ore with the second particle size range, and outputting the processed ore.
[0005] Furthermore, in the above-mentioned ore sorting method, the raw ore processing step further includes: a first screening step for raw ore, screening the raw ore to separate ore with a particle size larger than the third particle size range; a crushing step for raw ore, crushing the ore with a particle size larger than the third particle size range; a second screening step for raw ore, screening the remaining ore after screening the ore with a particle size larger than the third particle size range with the crushed ore to separate ore with a particle size range of the first, second, and third particle sizes; and a first output step, outputting the ore with a particle size range of the first as the first product.
[0006] Furthermore, in the above ore beneficiation method, the roughing step further includes: a roughing washing sub-step, which washes the ore with a third particle size range; a roughing separation sub-step, which separates the washed ore to separate the ore that meets the preset grade; and a roughing crushing sub-step, which crushes the separated ore to obtain ore smaller than the third particle size range.
[0007] Furthermore, in the above-mentioned ore beneficiation method, the beneficiation step further includes: a beneficiation sieving sub-step, which screens ore smaller than the third particle size range and ore with the second particle size range to separate ore with the first particle size range, ore with the fourth particle size range, and ore with the fifth particle size range; a second output sub-step, which outputs ore with the first particle size range as the first product; a beneficiation washing sub-step, which washes ore with the fourth particle size range and ore with the fifth particle size range respectively; and a beneficiation sorting sub-step, which sorts ore with the fourth particle size range and ore with the fifth particle size range after washing, and outputs ore with the fourth particle size range that meets the preset grade as the second product, and ore with the fifth particle size range that meets the preset grade as the third product.
[0008] Furthermore, in the above-mentioned ore sorting method, in the roughing sorting sub-step, an X-ray fluorescence separator is used to sort the washed ore; and / or, in the cleaning sorting sub-step, an X-ray transmission imaging separator is used to sort the washed ore with a fourth particle size range or an ore with a fifth particle size range.
[0009] Furthermore, in the above ore sorting method, the ore with the first particle size range is ore less than 10 mm; the ore with the second particle size range is ore with a particle size of 10 mm to 60 mm; the ore with the third particle size range is ore with a particle size of 60 mm to 180 mm; the ore with the fourth particle size range is ore with a particle size of 10 mm to 30 mm; and the ore with the fifth particle size range is ore with a particle size of 30 mm to 60 mm.
[0010] In this invention, the raw ore is processed and screened to separate ore with a first particle size range, an ore with a second particle size range, and an ore with a third particle size range. The ore with the third particle size range is then processed to obtain ore smaller than the third particle size range. The ore smaller than the third particle size range and the ore with the second particle size range are then processed. The processed ore with the first particle size range is output, and the processed ore with the second particle size range is segmented and output separately. This improves the product grade, ensures higher-grade concentrate, provides higher-quality raw materials for concentrators, effectively ensures the separation effect, realizes the reuse of low-grade raw ore, improves the utilization rate of raw ore, solves the problem that existing technologies cannot effectively separate low-grade ore, and can improve the operational output and efficiency of ore separation. It also increases the amount of usable resources for enterprises, bringing significant economic and social benefits.
[0011] On the other hand, the present invention also proposes an ore sorting system, which includes: a first processing system for processing the raw ore and screening out ore with a first particle size range, ore with a second particle size range and ore with a third particle size range, and outputting the ore with the first particle size range; a second processing system for processing the ore with the third particle size range to obtain ore smaller than the third particle size range; and a third processing system for processing the ore smaller than the third particle size range and the ore with the second particle size range, and outputting the processed ore.
[0012] Furthermore, in the aforementioned ore sorting system, the first processing system includes: a first screening device for receiving raw ore and screening it to separate ore particles larger than a third particle size range; a first crushing device for crushing the ore particles larger than the third particle size range; and a second screening device for screening the remaining ore after the ore particles larger than the third particle size range have been screened out in the first screening device, together with the crushed ore in the first crushing device, to separate ore particles with a first particle size range, ore particles with a second particle size range, and ore particles with a third particle size range, and outputting the ore particles with a first particle size range.
[0013] Furthermore, in the above-mentioned ore sorting system, the second processing system includes: a first washing device for washing ore with a third particle size range; a first sorting device for sorting the washed ore to separate ore that meets a preset grade; and a second crushing device for crushing the sorted ore that meets the preset grade to obtain ore smaller than the third particle size range.
[0014] Furthermore, in the aforementioned ore sorting system, the third processing system includes: a third screening device for screening the ore smaller than the third particle size range obtained by the second crushing device and the ore with the second particle size range screened by the second screening device, to separate the ore with the first particle size range, the fourth particle size range, and the fifth particle size range, and output the ore with the first particle size range; a second washing device for washing the ore with the fourth particle size range; a second sorting device for sorting the washed ore with the fourth particle size range, and output the sorted ore that meets the preset grade; a third washing device for washing the ore with the fifth particle size range; and a third sorting device for sorting the washed ore with the fifth particle size range, and output the sorted ore that meets the preset grade.
[0015] This invention can improve the grade of products, ensure higher grade concentrates, provide better raw materials for ore beneficiation plants, effectively ensure the sorting effect, realize the reuse of low grade raw ore, and improve the output and operating efficiency of ore sorting. Attached Figure Description
[0016] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0017] Figure 1 A flowchart of an ore sorting method provided in an embodiment of the present invention;
[0018] Figure 2 This is an overall flowchart of the ore sorting method provided in the embodiments of the present invention;
[0019] Figure 3 This is a schematic diagram of the ore sorting system provided in an embodiment of the present invention;
[0020] Figure 4 A schematic diagram of the structure of the first processing system in the ore sorting system provided in the embodiment of the present invention;
[0021] Figure 5 This is a schematic diagram of the structure of the second processing system in the ore sorting system provided in an embodiment of the present invention;
[0022] Figure 6 This is a schematic diagram of the third processing system in the ore sorting system provided in an embodiment of the present invention. Detailed Implementation
[0023] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0024] Example of ore sorting method:
[0025] See Figure 1 , Figure 1 A flowchart of an ore sorting method provided in an embodiment of the present invention is shown. As illustrated, the ore sorting method includes the following steps:
[0026] The raw ore processing step S1 involves processing the raw ore and screening it to separate ore with a first particle size range, ore with a second particle size range, and ore with a third particle size range, and then outputting the ore with the first particle size range.
[0027] Specifically, the raw ore undergoes pre-screening, crushing, and further screening to obtain ore with a first particle size range, an ore with a second particle size range, and an ore with a third particle size range. The ore with the first particle size range is less than 10 mm, the ore with the second particle size range is 10 mm to 60 mm, and the ore with the third particle size range is 60 mm to 180 mm. Then, the ore with the first particle size range, i.e., the ore less than 10 mm, is output as the first product.
[0028] See Figure 2 The raw ore processing step S1 further includes:
[0029] The first screening step S11 of the raw ore is to screen the raw ore and separate out the ore with a particle size larger than the third particle size range.
[0030] Specifically, a bar feeder is used to screen the raw ore, separating out ore particles larger than the third particle size range. Among these, the ore particles larger than the third particle size range are those larger than 180mm. The bar feeder then separates the ore particles larger than 180mm from those smaller than 180mm.
[0031] The raw ore crushing sub-step S12 involves crushing ore larger than the third particle size range.
[0032] Specifically, ore larger than 180mm is fed to a crushing device for crushing to reduce the ore size to less than 180mm. However, ore smaller than 180mm separated by the bar feeder does not need to be crushed to prevent over-crushing of ore smaller than 180mm.
[0033] Preferably, the crushing device is a jaw crusher.
[0034] In the second screening step S13 of the raw ore, the remaining ore after screening out the ore larger than the third particle size range is screened together with the crushed ore to separate the ore with the first particle size range, the second particle size range, and the third particle size range.
[0035] Specifically, the remaining ore after the first screening step S11 of the raw ore, in which ore larger than the third particle size range is screened out, namely the ore smaller than 180mm screened out in the first screening step S11, and the ore smaller than 180mm after crushing in the raw ore crushing sub-step S12, are all transported to the screening device for screening. The screening device screens out the ore with the first particle size range, the ore with the second particle size range, and the ore with the third particle size range.
[0036] Preferably, the screening device is a double-layer vibrating screen.
[0037] The first output sub-step S14 outputs ore with a first particle size range as the first product.
[0038] Specifically, the screening device outputs the ore with a first particle size range as the first product, that is, the ore smaller than 10mm is output as the first product.
[0039] In the coarse selection step S2, the ore with the third particle size range is processed to obtain ore smaller than the third particle size range.
[0040] Specifically, the ore with a third particle size range screened out in the second screening molecular step S13 of the raw ore is washed, sorted, and crushed to obtain ore smaller than the third particle size range. Among them, ore smaller than the third particle size range is ore smaller than 60 mm.
[0041] The coarse selection step S2 further includes:
[0042] The roughing and washing sub-step S21 involves washing the ore with a third particle size range.
[0043] Specifically, since the raw ore contains some slime, which can easily affect the grade of the sorted products, it is necessary to wash the ore with a third particle size range.
[0044] Preferably, a circular vibrating screen is used as the washing screen. Taking advantage of its large amplitude, ore with a third particle size range is thrown and turned on the screen surface. During this process, a high-pressure water spraying device sprays and washes the ore, removing the ore mud attached to the surface of the ore from all angles.
[0045] In the roughing and sorting sub-step S22, the washed ore is sorted to separate ore that meets the preset grade.
[0046] Specifically, the washed ore with a third particle size range is conveyed by a belt conveyor to a sorting device for sorting, preferably using an X-ray intelligent sorting device. The sorting device separates the ore that meets the preset grade from the ore that does not. The ore that does not meet the preset grade is output to prevent it from being crushed later and producing powdery waste rock, which would lower the grade of the product.
[0047] In practice, the preset grade can be determined based on the actual situation, and this embodiment does not impose any restrictions on it. For example, taking copper ore as an example, the preset grade can be 0.04%, then ore with a grade lower than 0.04% and a third particle size range will be output.
[0048] Preferably, an X-ray fluorescence separator is used to separate the washed ore. Taking advantage of the high precision and large particle size of the X-ray fluorescence separator, the separation operation of ore with a third particle size range is completed. Ore that does not meet the preset grade is discarded in advance, preventing the ore that does not meet the preset grade from being crushed in the subsequent process and producing unsortable powdery waste rock (less than 10mm). This prevents the powdery waste rock from being mixed into the ore of the subsequent separation process and reducing the grade of the product. It can also preliminarily enrich the ore grade, which is beneficial to the control of the final product grade in the subsequent separation process.
[0049] In the coarse crushing step S23, the sorted ore is crushed to obtain ore smaller than the third particle size range.
[0050] Specifically, the ore is conveyed to the crushing device via a belt conveyor. The crushing device crushes the ore that meets the preset grade and has a third particle size range to obtain ore smaller than the third particle size range, that is, ore smaller than 60mm.
[0051] Preferably, a cone crusher is used for crushing.
[0052] In step S3, the ore smaller than the third particle size range and the ore with the second particle size range are processed, and the processed ore is output.
[0053] Specifically, the ore smaller than the third particle size range obtained in the coarse crushing sub-step S23 is screened, washed, and separated from the ore with the second particle size range in the second screening sub-step S13 of the original ore to obtain ore with the first particle size range, ore with the fourth particle size range, and ore with the fifth particle size range. The ore with the fourth particle size range is 10mm to 30mm, and the ore with the fifth particle size range is 30mm to 60mm. That is, ore smaller than 10mm (i.e., powdery ore), ore between 10mm and 30mm (i.e., fine-grained ore), and ore between 30mm and 60mm (i.e., medium-grained ore) are obtained.
[0054] The ore with a first particle size range is output as the first product, the ore with a fourth particle size range is output as the second product, and the ore with a fifth particle size range is output as the third product.
[0055] Selected step S3 further includes:
[0056] In the fine screening step S31, ore smaller than the third particle size range and ore with the second particle size range are screened to separate ore with the first particle size range, ore with the fourth particle size range and ore with the fifth particle size range.
[0057] Specifically, a screening device is used to screen the ore smaller than the third particle size range obtained in the coarse crushing sub-step S23 together with the ore with the second particle size range screened in the second screening sub-step S13 of the original ore. Preferably, the screening device is a vibrating screen.
[0058] The second output sub-step S32 outputs ore with a first particle size range as the first product.
[0059] Specifically, the ore with a first particle size range (i.e., ore less than 10 mm) screened in the above-mentioned fine screening step S31 and the ore with a first particle size range (i.e., ore less than 10 mm) screened in the second screening step S13 of the raw ore are mixed as the first product and output.
[0060] The ore washing sub-step S33 involves washing ore with a fourth particle size range and ore with a fifth particle size range, respectively.
[0061] Specifically, the ore with the fourth particle size range (i.e., ore with a particle size of 10 mm to 30 mm) and the ore with the fifth particle size range (i.e., ore with a particle size of 30 mm to 60 mm) are washed separately to obtain washed ore with the fourth particle size range and ore with the fifth particle size range.
[0062] Preferably, a circular vibrating screen is used as the washing screen. Taking advantage of its large amplitude, the ore is thrown and turned on the screen surface. During this process, a high-pressure water spraying device sprays and washes the ore, removing the ore mud adhering to the ore surface from all angles.
[0063] In the fine selection and sorting sub-step S34, the ore with the fourth particle size range and the ore with the fifth particle size range after washing are sorted respectively. The ore with the fourth particle size range that meets the preset grade is output as the second product, and the ore with the fifth particle size range that meets the preset grade is output as the third product.
[0064] Specifically, the washed ore with a fourth particle size range is conveyed to a sorting device via a belt conveyor. The sorting device separates the washed ore with a fourth particle size range that meets the preset grade (i.e., ore with a particle size range of 10mm to 30mm). Preferably, an X-ray intelligent sorting system is used for the sorting operation. Then, the ore that meets the preset grade and has a fourth particle size range is used as the second product and output.
[0065] After washing, ore with a particle size range of five is conveyed to a sorting unit via a belt conveyor. The sorting unit separates the ore with a particle size range of five that meets the preset grade (i.e., ore between 30mm and 60mm). Preferably, an X-ray intelligent sorting system is used for the sorting operation. Then, the ore with a particle size range that meets the preset grade is output as the third product.
[0066] Preferably, an X-ray transmission imaging separator is used to separate ore with a fourth or fifth particle size range after washing. Specifically, taking advantage of the X-ray transmission imaging separator's large processing capacity and low minimum particle size limit, fine-grained ore (10mm–30mm) and medium-grained ore (30mm–60mm) are separated after classification. This improves the separator's recognition and execution efficiency to a certain extent, increases the grade of the second product to meet the beneficiation plant's standards, and simultaneously maximizes the grade of the third product while minimizing metal loss.
[0067] By screening ores smaller than the third particle size range and ores in the second particle size range (less than 60mm), ores smaller than 10mm are separated and used as the first product, thus improving the grade of the first product. Then, the 10mm–60mm ores are screened into narrow-particle sizes of 10mm–30mm and 30mm–60mm. These narrow-particle sizes are then subjected to segmented washing and refining, which improves identification efficiency and execution accuracy, thereby better ensuring product yield and grade, reducing metal loss, and increasing the utilization rate of low-grade ores.
[0068] Preferably, in the roughing and sorting sub-step S22, an X-ray fluorescence separator is used to sort the washed ore; and / or, in the fine sorting and sorting sub-step S34, an X-ray transmission imaging separator is used to sort the washed ore with a fourth particle size range or an ore with a fifth particle size range.
[0069] As can be seen, in this embodiment, the raw ore is processed and screened to separate ore with a first particle size range, an ore with a second particle size range, and an ore with a third particle size range. Then, the ore with the third particle size range is processed to obtain ore smaller than the third particle size range. Then, the ore smaller than the third particle size range and the ore with the second particle size range are processed. The processed ore with the first particle size range is output, and the processed ore with the second particle size range is segmented and output separately. This improves the grade of the product, ensures higher-grade concentrate, provides higher-quality raw materials for the concentrator, effectively ensures the separation effect, realizes the reuse of low-grade raw ore, improves the utilization rate of raw ore, solves the problem that existing technologies cannot effectively separate low-grade ore, improves the output and operating efficiency of ore separation, increases the amount of usable resources for enterprises, and brings significant economic and social benefits.
[0070] Example of an ore sorting system:
[0071] This embodiment also proposes an ore sorting system, see [link to documentation]. Figure 3 The ore sorting system includes a first processing system 100, a second processing system 200, and a third processing system 300. The first processing system 100 receives raw ore, processes it, and separates it into ore with a first particle size range, ore with a second particle size range, and ore with a third particle size range, and outputs the ore with the first particle size range. The ore with the first particle size range is less than 10 mm, the ore with the second particle size range is 10 mm to 60 mm, and the ore with the third particle size range is 60 mm to 180 mm.
[0072] The second processing system 200 is used to process ore with a third particle size range to obtain ore smaller than the third particle size range. Specifically, the ore with a third particle size range is washed, sorted, and crushed to obtain ore smaller than the third particle size range. The ore smaller than the third particle size range is defined as ore smaller than 60 mm.
[0073] The third processing system 300 processes ores smaller than the third particle size range and ores with the second particle size range, and outputs the processed ores. Specifically, the ores smaller than the third particle size range and the ores with the second particle size range are screened, washed, and sorted to obtain ores with the first particle size range, the fourth particle size range, and the fifth particle size range. The fourth particle size range consists of ores with a particle size of 10mm to 30mm, and the fifth particle size range consists of ores with a particle size of 30mm to 60mm. That is, ores smaller than 10mm (i.e., powdered ore), ores 10mm to 30mm (i.e., fine-grained ore), and ores 30mm to 60mm (i.e., medium-grained ore) are obtained. The ores with the first particle size range are output as the first product, the ores with the fourth particle size range as the second product, and the ores with the fifth particle size range as the third product.
[0074] As can be seen, in this embodiment, the first processing system 100 processes the raw ore and screens out ore with a first particle size range, ore with a second particle size range, and ore with a third particle size range. The second processing system 200 processes the ore with the third particle size range to obtain ore smaller than the third particle size range. The third processing system 300 processes the ore smaller than the third particle size range and the ore with the second particle size range, outputting the processed ore with the first particle size range, and segmenting and outputting the processed ore with the second particle size range separately. This improves the grade of the product, ensures higher grade concentrate, provides higher quality raw materials for the concentrator, effectively ensures the separation effect, realizes the reuse of low-grade raw ore, and improves the output and operating efficiency of ore separation.
[0075] See Figure 4 In the above embodiment, the first processing system 100 includes: a first screening device 110, a first crushing device 120, and a second screening device 130. The first screening device 110 receives raw ore and screens it to separate ore particles larger than a third particle size range. Wherein, ore particles larger than the third particle size range are those larger than 180mm, the first screening device 110 separates both ore particles larger than 180mm and ore particles smaller than 180mm. The first screening device 110 can be a bar feeder.
[0076] The first crushing device 120 is used to crush ore larger than the third particle size range to reduce the ore to a size of less than 180 mm. Preferably, the first crushing device 120 is a jaw crusher.
[0077] The second screening device 130 is used to screen the remaining ore after the ore larger than the third particle size range has been screened out in the first screening device 110, and the crushed ore in the first crushing device 120, to screen out ore with a first particle size range, ore with a second particle size range, and ore with a third particle size range, and output the ore with the first particle size range. Specifically, the second screening device 130 screens out the ore smaller than 180mm in the first screening device 110 and the crushed ore smaller than 180mm in the first crushing device 120, to screen out ore smaller than 10mm, ore between 10mm and 60mm, and ore between 60mm and 180mm.
[0078] Preferably, the second screening device 130 is a double-layer vibrating screen.
[0079] As can be seen, in this embodiment, the ore larger than the third particle size range in the raw ore is screened out and crushed. Then, the crushed ore and the ore smaller than the third particle size range in the raw ore are screened together. The ore with the first particle size range screened out is directly output as the first product, which improves the grade and sorting accuracy of the product.
[0080] See Figure 5 In the above embodiments, the second processing system 200 includes: a first washing device 210, a first sorting device 220, and a second crushing device 230. The first washing device 210 is used to wash ore with a third particle size range to remove ore slime and improve the grade of the sorted product. Preferably, the first washing device 210 is a circular vibrating screen.
[0081] The first sorting device 220 is used to sort the washed ore to separate ore that meets a preset grade. Specifically, the first sorting device 220 uses X-ray intelligent sorting to separate ore that meets the preset grade from ore that does not, outputting the ore that does not meet the preset grade to prevent it from being crushed later and producing powdery waste rock, which would lower the grade of the product. In specific implementation, the value of the preset grade can be determined according to the actual situation, and this embodiment does not impose any restrictions on it.
[0082] Preferably, the first sorting device 220 is an X-ray fluorescence sorter.
[0083] The second crushing device 230 is used to crush the sorted ore that meets the preset grade to obtain ore smaller than the third particle size range, that is, ore smaller than 60mm. Preferably, the second crushing device 230 is a cone crusher.
[0084] As can be seen, in this embodiment, washing, sorting and crushing the ore with a third particle size range to obtain ore smaller than the third particle size range can effectively improve the grade of the product and facilitate the control of the final product grade in the subsequent sorting process.
[0085] See Figure 6 In the above embodiments, the third processing system 300 includes: a third screening device 310, a second washing device 320, a second sorting device 330, a third washing device 340, and a third sorting device 350.
[0086] in,
[0087] The third screening device 310 receives ore smaller than the third particle size range output from the second crushing device 230 and ore with the second particle size range screened by the second screening device 130. It then screens the ore smaller than the third particle size range and the ore with the second particle size range to separate ore with the first particle size range, the fourth particle size range, and the fifth particle size range, and outputs the ore with the first particle size range. Specifically, the ore with the first particle size range screened by the third screening device 310 is mixed with the ore with the first particle size range screened by the second screening device 130 as the first product, which is then output.
[0088] Preferably, the third screening device 310 is a vibrating screen.
[0089] The second washing device 320 is used to receive ore with a fourth particle size range output from the third screening device 310 and wash the ore with the fourth particle size range. Preferably, the second washing device 320 is a circular vibrating screen for washing ore with a particle size of 10mm to 30mm.
[0090] The second sorting device 330 is used to sort ore with a fourth particle size range after washing, and outputs the sorted ore that meets the preset grade. Specifically, the second sorting device 330 sorts out ore that meets the preset grade and has a particle size of 10mm to 30mm, and uses the ore that meets the preset grade and has a particle size of 10mm to 30mm as the second product. Preferably, the second sorting device 330 is an X-ray transmission imaging sorting machine.
[0091] The third washing device 340 is used to receive ore with a fifth particle size range output from the third screening device 310 and wash the ore with a fifth particle size range. Preferably, the third washing device 340 is a circular vibrating screen for washing ore with a particle size of 30mm to 60mm.
[0092] The third sorting device 350 is used to sort ore with a fifth particle size range after washing, and outputs the sorted ore that meets the preset grade. Specifically, the third sorting device 350 sorts out ore that meets the preset grade and has a particle size of 30mm to 60mm, and uses the ore that meets the preset grade and has a particle size of 30mm to 60mm as the third product. Preferably, the third sorting device 350 is an X-ray transmission imaging sorting machine.
[0093] As can be seen, in this embodiment, the third screening device 310 screens ores smaller than the third particle size range and ores with the second particle size range, i.e., ores smaller than 60mm, separating out ores smaller than 10mm, which are then used as the first product, thus improving the grade of the first product. Then, the 10mm-60mm ores are screened into narrow-particle sizes of 10mm-30mm and 30mm-60mm. These narrow-particle sizes are then segmented, washed, and refined, improving identification efficiency and execution accuracy, thereby better ensuring product yield and grade, reducing metal loss, and increasing the utilization rate of low-grade ores.
[0094] In summary, this embodiment can improve the grade of the product, ensure higher grade concentrate, provide better raw materials for the concentrator, effectively ensure the separation effect, realize the reuse of low grade raw ore, and improve the output and operating efficiency of ore separation.
[0095] It should be noted that the ore sorting method and ore sorting system in this invention are based on the same principle, and related aspects can be referred to each other.
[0096] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate the direction or positional relationship, are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.
[0097] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0098] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.
Claims
1. A method for separating ores, characterized in that, Includes the following steps: The raw ore processing steps involve processing the raw ore and screening it to separate ore with a first particle size range, ore with a second particle size range, and ore with a third particle size range, as well as outputting the ore with the first particle size range. The coarse selection step processes the ore with the third particle size range to obtain ore smaller than the third particle size range; The process involves selecting steps to process the ore smaller than the third particle size range and the ore with the second particle size range, and then outputting the processed ore. The selection steps further include: The fine screening step involves screening the ore smaller than the third particle size range and the ore with the second particle size range to separate the ore with the first particle size range, the fourth particle size range, and the fifth particle size range. The second output sub-step outputs the ore with the first particle size range as the first product. The washing process is carefully selected, and the ore with the fourth particle size range and the ore with the fifth particle size range are washed separately. The selection and sorting sub-steps separate the ore with the fourth particle size range and the ore with the fifth particle size range after washing. The ore with the fourth particle size range that meets the preset grade is output as the second product, and the ore with the fifth particle size range that meets the preset grade is output as the third product. The ore having the first particle size range is ore less than 10 mm; The ore having the second particle size range is ore with a particle size of 10 mm to 60 mm; The ore with the third particle size range is ore with a particle size of 60 mm to 180 mm; The ore with the fourth particle size range is ore with a particle size of 10 mm to 30 mm; The ore with the fifth particle size range is ore with a particle size of 30 mm to 60 mm.
2. The ore sorting method according to claim 1, characterized in that, The raw ore processing steps further include: The first molecular screening step of the raw ore is to screen the raw ore to separate out ore particles larger than the third particle size range; The raw ore crushing sub-step involves crushing the ore that is larger than the third particle size range; The second screening step of the raw ore involves screening the remaining ore after screening out the ore with particles larger than the third particle size range, and then screening out the ore with particles in the first particle size range, the second particle size range, and the third particle size range. The first output sub-step outputs the ore having a first particle size range as the first product.
3. The ore sorting method according to claim 1, characterized in that, The coarse selection step further includes: The roughing and washing sub-step involves washing the ore with the third particle size range. The roughing and sorting sub-step sorts the washed ore to separate the ore that meets the preset grade. The coarse crushing step crushes the separated ore to obtain ore smaller than the third particle size range.
4. The ore sorting method according to claim 3, characterized in that, In the roughing and sorting sub-step, an X-ray fluorescence separator is used to sort the washed ore; and / or, In the fine selection and sorting sub-step, an X-ray transmission imaging sorting machine is used to sort the ore with a fourth particle size range or a fifth particle size range after washing.
5. An ore sorting system using the ore sorting method as described in any one of claims 1 to 4, characterized in that, include: A first processing system (100) is used to process the raw ore and screen out ore with a first particle size range, ore with a second particle size range and ore with a third particle size range, and output the ore with the first particle size range. A second processing system (200) is used to process the ore having a third particle size range to obtain ore smaller than the third particle size range; A third processing system (300) is used to process the ore smaller than the third particle size range and the ore having the second particle size range, and to output the processed ore.
6. The ore sorting system according to claim 5, characterized in that, The first processing system (100) includes: The first screening device (110) is used to receive the raw ore and screen the raw ore to screen out ore larger than the third particle size range. The first crushing device (120) is used to crush the ore that is larger than the third particle size range; The second screening device (130) is used to screen the remaining ore after the ore larger than the third particle size range has been screened out in the first screening device and the crushed ore in the first crushing device, so as to screen out the ore with the first particle size range, the ore with the second particle size range and the ore with the third particle size range, and output the ore with the first particle size range.
7. The ore sorting system according to claim 6, characterized in that, The second processing system (200) includes: A first washing device (210) is used to wash the ore having the third particle size range; The first sorting device (220) is used to sort the washed ore to separate the ore that meets the preset grade. The second crushing device (230) is used to crush the sorted ore that meets the preset grade to obtain ore smaller than the third particle size range.
8. The ore sorting system according to claim 7, characterized in that, The third processing system (300) includes: The third screening device (310) is used to screen the ore smaller than the third particle size range obtained by the second crushing device and the ore with the second particle size range screened by the second screening device, so as to screen out the ore with the first particle size range, the ore with the fourth particle size range and the ore with the fifth particle size range, and output the ore with the first particle size range. The second washing device (320) is used to wash the ore having the fourth particle size range; The second sorting device (330) is used to sort the ore with a fourth particle size range after washing, and output the sorted ore that meets the preset grade. The third washing device (340) is used to wash the ore having the fifth particle size range; The third sorting device (350) is used to sort the ore with a fifth particle size range after washing, and output the sorted ore that meets the preset grade.