Light sorting and color sorting unit

Abstract

After ore to be sorted is fed into a roughing group color sorter, sorted concentrate is automatically conveyed to a concentration group color sorter, the concentration group color sorter sorts high-grade concentrate for the second time, and tailings sorted by the concentration group color sorter are automatically circulated to the roughing group color sorter to be subjected to light sorting again. A cycle is formed; tailings sorted by the roughing group color sorter are automatically conveyed to the scavenging group color sorter, middlings sorted by the scavenging group color sorter are automatically conveyed to the roughing group color sorter, sorting is carried out again, and a second cycle is formed; and tailings obtained through sorting are directly output. And through two closed-loop circular mineral separation, the to-be-separated ore can be more accurately selected, and final concentrate and tailings are obtained. Due to the fact that the roughing color sorter, the concentration color sorter and the scavenging color sorter are distributed in an up-and-down stacked mode and connected through the lifting conveying structure or the gravity self-conveying structure, the circulating closed-loop beneficiation function is achieved, meanwhile, the occupied area of the color sorter is effectively reduced, and the problem that belt conveying is prone to crossing is solved.

Description

Technical Field

[0001] The utility model relates to a beneficiation device, in particular to an optical sorting and color sorting unit. Background Art

[0002] The inventor of the utility model proposed a method for picking target fluorescent ores by a color sorter in the patent "Method for Beneficiating Fluorescent Ores" with the patent number 2023116390567, which can distinguish and pick target fluorescent ores from other minerals except the target ores, so as to select high-grade target fluorescent ore concentrates. By this method, a large amount of mixed gangue minerals can be discarded in advance, greatly reducing the amount of ore that needs to be ground and floated in the later stage, greatly reducing the grinding and flotation costs, and greatly improving the grade of the target fluorescent ore concentrates.

[0003] However, the inventor of the utility model found that due to various reasons, such as the low resolution of high-speed cameras, the untimely opening of solenoid valves, and the light reaction on one side of the target minerals, the existing color sorters are prone to mixing gangue in the target concentrates and mixing target minerals in the tailings, resulting in incomplete separation. It is very necessary to further process the products of the optical sorting. Increasing the number of cleaning times to remove gangue and increasing the number of scavenging times to pick up the concentrates are necessary measures to improve the grade and recovery rate of the concentrates.

[0004] However, currently, the existing color sorters for optical sorting are mainly single units, and each unit can only produce two products, namely optical sorting concentrates and optical sorting tailings. Therefore, to carry out cleaning and scavenging on minerals, the color sorters must be distributed. The concentrates and tailings that need to be further processed after the first optical sorting must be transported to another color sorter through a belt. Due to certain requirements for the spatial layout of belt transmission, it is difficult to arrange the color sorters on site, prone to belt crossing, poor linkage between each color sorter, and difficult operation. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an optical sorting and color sorting unit, which solves the technical problems of poor linkage between existing color sorters, large floor area and easy crossing of belt transmission in the prior art, and realizes that a circulating closed-circuit beneficiation can be formed through one optical sorting and color sorting unit to obtain final concentrates and tailings.

[0006] To solve the above technical problems, an embodiment of the utility model provides an optical sorting and color sorting unit, including: at least two groups of optical sorting and color sorting machines, wherein at least one group is a roughing group and at least one group is a cleaning group, and the color sorting machines of each group are stacked vertically;

[0007] The concentrate discharge end of the color sorting machine in the roughing group is communicated with the feed end of the color sorting machine in the cleaning group through a lifting transmission structure or a gravity self-transmission structure, and the output target ores are sent to the feed end of the color sorting machine in the cleaning group through the lifting transmission structure or the gravity self-transmission structure.

[0008] In the embodiment of the present utility model, compared with the prior art, through the above structural arrangement, after the ore to be sorted is fed into the roughing group color sorter, the selected target ore (concentrate) is automatically conveyed to the beneficiating group color sorter. The beneficiating group color sorter performs secondary sorting on the target ore that has been roughly sorted, and the high-grade concentrate is selected. The tailings selected by the beneficiating group color sorter are automatically recycled to the roughing group color sorter for re-optical sorting, forming a cycle. Through closed-circuit circulation beneficiation, the ore to be selected can be sorted more accurately to obtain the final concentrate. Moreover, since the color sorters of the roughing group and the beneficiating group are stacked vertically and are connected by a lifting and conveying structure or a gravity self-conveying structure, while realizing the function of closed-circuit circulation beneficiation, the floor area of the color sorter is effectively reduced, and the problem of easy cross-over of belt conveying is avoided.

[0009] The embodiment of the present utility model also provides an optical sorting and color sorting machine set, including: at least two groups of optical sorting and color sorting machines, where at least one group is a roughing group and at least one group is a scavenging group, and the color sorters of each group are stacked vertically.

[0010] The tailings discharge end of the roughing group color sorter is communicated with the feed end of the scavenging group color sorter through a lifting and conveying structure or a gravity self-conveying structure, and the output tailings are sent to the feed end of the scavenging group color sorter through the lifting and conveying structure or the gravity self-conveying structure.

[0011] In the embodiment of the present utility model, compared with the prior art, through the above structural arrangement, after the ore to be sorted is fed into the roughing group color sorter, the selected tailings are automatically conveyed to the scavenging group color sorter, and the color sorters of the scavenging group perform further sorting. The target ore (middlings) selected by the scavenging group color sorter is automatically conveyed to the roughing group color sorter for re-sorting, forming a cycle. The tailings selected by the scavenging group color sorter are directly output. Through closed-circuit circulation beneficiation, the ore to be selected can be sorted more accurately to obtain the final concentrate and tailings, avoiding waste. Moreover, since the color sorters of the roughing group and the scavenging group are stacked vertically and are connected by a lifting and conveying structure or a gravity self-conveying structure, while realizing the function of closed-circuit circulation beneficiation, the floor area of the color sorter is effectively reduced, and the problem of easy cross-over of belt conveying is avoided.

[0012] The embodiment of the present utility model also provides an optical sorting and color sorting machine set, including:

[0013] At least three optical sorting and color sorting machines, the at least three optical sorting and color sorting machines are divided into at least three groups, each group includes at least one color sorter; the three groups include at least one roughing group, one beneficiating group and one scavenging group, and the color sorters of each group are stacked vertically;

[0014] The concentrate discharge end of the roughing group color sorter is communicated with the feed end of the beneficiating group color sorter through a lifting and conveying structure or a gravity self-conveying structure;

[0015] The tailing discharge end of the rough selection color sorter is communicated with the feeding end of the scavenging selection color sorter through a lifting transmission structure or a gravity self-transmission structure;

[0016] The tailing discharge end of the fine selection color sorter is communicated with the feeding end of the rough selection color sorter through a lifting transmission structure or a gravity self-transmission structure;

[0017] The concentrate discharge end of the scavenging selection color sorter is communicated with the feeding end of the rough selection color sorter through a lifting transmission structure or a gravity self-transmission structure.

[0018] In terms of the prior art, in the embodiment of the present utility model, through the above structural arrangement, after the ore to be sorted is fed into the rough selection color sorter, the selected target ore (concentrate) is automatically transmitted to the fine selection color sorter. The fine selection color sorter performs secondary sorting on the target ore that has been roughly selected, and selects high-grade concentrate. The tailings selected by the fine selection color sorter are automatically recycled to the rough selection color sorter for re-optical sorting, forming a cycle; the tailings selected by the rough selection color sorter are automatically transmitted to the scavenging selection color sorter, and are sorted by the color sorter of the scavenging group. The target ore (middling ore) obtained by the scavenging selection color sorter is automatically transmitted to the rough selection color sorter for re-selection, forming a second cycle; the tailings obtained by the scavenging selection color sorter are directly output. Through two closed-circuit cycle ore dressing, the ore to be selected can be sorted more accurately to obtain the final concentrate and tailings. Moreover, since the color sorters of the rough selection group, the fine selection group and the scavenging selection group are stacked vertically and are connected by a lifting transmission structure or a gravity self-transmission structure, while realizing the function of closed-circuit cycle ore dressing, the floor area of the color sorter is effectively reduced, and the problem of easy intersection of belt transmission is avoided.

[0019] As a further improvement, the rough selection color sorter is located in the middle layer, the fine selection color sorter is located above the rough selection color sorter, and the scavenging selection color sorter is located below the rough selection color sorter;

[0020] The concentrate discharge end of the rough selection color sorter is communicated with the feeding end of the fine selection color sorter through a first lifting transmission structure, and the target ore output by the rough selection color sorter is transmitted to the feeding end of the upper-layer fine selection color sorter through the first lifting transmission structure;

[0021] The tailing discharge end of the fine selection color sorter is communicated with the feeding end of the rough selection color sorter through a first gravity self-transmission structure, and the tailings output by the fine selection color sorter are automatically transmitted to the feeding end of the lower-layer rough selection color sorter through the first gravity self-transmission structure;

[0022] The tailings discharge end of the rough selection color sorter is communicated with the feed end of the scavenging color sorter through a second gravity self-conveying structure, and the tailings output by the rough selection color sorter are automatically conveyed to the feed end of the scavenging color sorter on the next layer through the second gravity self-conveying structure;

[0023] The concentrate discharge end of the scavenging color sorter is communicated with the feed end of the rough selection color sorter through a second lifting and conveying structure, and the target ore output by the scavenging color sorter is conveyed to the feed end of the rough selection color sorter on the upper layer through the second lifting and conveying structure.

[0024] This method is more suitable for the case where the color sorter uses forward selection. Under this structure, after the ore to be sorted is fed into the rough selection color sorter, the selected target ore (concentrate) is conveyed to the upper-layer fine selection color sorter through the lifting and conveying structure. The fine selection color sorter performs secondary sorting on the rough-selected target ore to select high-grade concentrate. The tailings selected by the fine selection color sorter automatically flow into the rough selection color sorter under the action of gravity for re-optical sorting, forming a closed loop; the tailings selected by the rough selection color sorter are automatically conveyed to the scavenging color sorter under the action of gravity, and the color sorter of the scavenging group performs sorting. The target ore (middling ore) obtained by the scavenging color sorter is conveyed to the upper-layer rough selection color sorter through the lifting and conveying structure for re-sorting, forming a second closed loop; the final tailings obtained by the scavenging color sorter are directly output. The arrangement of the rough selection color sorter in the middle layer, the fine selection color sorter in the upper layer, and the scavenging color sorter in the lower layer makes the paths of the above two closed-loop beneficiations the shortest. While realizing the function of closed-loop beneficiation and reducing the floor area of the color sorter, it further shortens the circulation path of the color sorter group and improves the working efficiency of the color sorter group.

[0025] As a further improvement, the rough selection color sorter is located in the middle layer, the fine selection color sorter is located below the rough selection color sorter, and the scavenging color sorter is located above the rough selection color sorter;

[0026] The concentrate discharge end of the rough selection color sorter is communicated with the feed end of the fine selection color sorter through a first gravity self-conveying structure, and the target ore output by the rough selection color sorter is automatically conveyed to the feed end of the fine selection color sorter through the first gravity self-conveying structure;

[0027] The tailings discharge end of the fine selection color sorter is communicated with the feed end of the rough selection color sorter through a first lifting and conveying structure, and the tailings output by the fine selection color sorter are conveyed to the feed end of the rough selection color sorter through the first lifting and conveying structure;

[0028] The tailings discharge end of the rough selection color sorter is communicated with the feed end of the scavenging color sorter through a second lifting and conveying structure, and the tailings output by the rough selection color sorter are conveyed to the feed end of the scavenging color sorter through the second lifting and conveying structure;

[0029] The concentrate discharge end of the scavenging color sorter is communicated with the feed end of the rough selection color sorter through a second gravity self-conveying structure, and the target ore output by the scavenging color sorter is automatically conveyed to the feed end of the rough selection color sorter through the second gravity self-conveying structure.

[0030] This method is more suitable for the case where the color sorter uses reverse selection. In this structure, after the ore to be sorted is fed into the rough selection color sorter, the non-target ore (tailings) selected are conveyed to the upper-layer scavenging color sorter through the lifting and conveying structure. The scavenging color sorter performs secondary sorting on the rough-selected tailings to select the final tailings. The target ore (middlings or concentrate) not selected by the scavenging color sorter automatically flows into the rough selection color sorter under the action of gravity for re-optical sorting, forming a closed circuit; the target ore (concentrate) not selected by the rough selection color sorter is automatically conveyed to the fine selection color sorter under the action of gravity, and the color sorter of the fine selection group performs sorting. The non-target ore (tailings) obtained by the fine selection color sorter is conveyed to the upper-layer rough selection color sorter through the lifting and conveying structure for re-sorting, forming a second closed circuit; the final concentrate obtained by the fine selection color sorter is directly output. The arrangement of the rough selection color sorter in the middle layer, the fine selection color sorter in the lower layer, and the scavenging color sorter in the upper layer makes the paths of the above two closed-circuit beneficiations the shortest. While realizing the function of closed-circuit beneficiation and reducing the floor area of the color sorter, it further shortens the circulation path of the color sorter group and improves the working efficiency of the color sorter group.

[0031] As a further improvement, the color sorters of each group are arranged in a stepped manner in upper and lower layers. So that the target ore or tailings selected in the upper layer can more conveniently flow into the feed end of the color sorter in the lower layer under the action of gravity.

[0032] As a further improvement, the rough selection color sorter, the fine selection color sorter, and the scavenging color sorter are distributed in upper and lower layers or arranged in a stepped manner in upper and lower layers through the same support.

[0033] As a further improvement, the first lifting and conveying structure or the second lifting and conveying structure is one of the following:

[0034] A lifting bucket conveyor structure, a spiral lifting conveyor structure, or a large-angle belt conveyor structure.

[0035] As a further improvement, the first gravity self-conveying structure or the second gravity self-conveying structure is one of the following or any combination thereof:

[0036] Funnel structure, pipeline structure, and slide structure.

[0037] As a further improvement, each of the rough selection group, fine selection group, and scavenging group includes at least one color sorter, constituting a color sorter working group, and at least two of the color sorter working groups are included in one area. In this way, the amount of ore processed at one time can be increased, and the working efficiency of the color sorter group can be further improved.

[0038] As a further improvement, each of the rough selection group, fine selection group, and / or scavenging group further includes its own vibrating feeder, and the vibrating feeder is communicated with the feeding end of the color sorter in this group;

[0039] Each of the lifting and conveying structures or gravity self-conveying structures is communicated with the vibrating feeders of each group, and is communicated with the feeding ends of the color sorters of each group through the vibrating feeders.

[0040] As a further improvement, each of the rough selection group, fine selection group, and / or scavenging group further includes its own material distribution module, and the concentrate selected by the color sorter is sent to the concentrate discharge end through the material distribution module, and the tailings selected by the color sorter are sent to the tailings discharge end. Description of the Drawings

[0041] Figure 1 It is a structural diagram of an optical sorting color sorter group according to the second embodiment of the present invention.

[0042] Figure 2 It is a structural diagram of an optical sorting color sorter group according to the third embodiment of the present invention.

[0043] Figure 3 It is a structural diagram of an optical sorting color sorter group according to the fourth embodiment of the present invention. Detailed Embodiments

[0044] To make the objectives, technical solutions, and advantages of the present invention clearer, the following will elaborate on each embodiment of the present invention with reference to the accompanying drawings. However, those of ordinary skill in the art can understand that in each embodiment of the present invention, many technical details are provided for the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions required to be protected by the claims of the present application can still be achieved.

[0045] The first embodiment of the present invention relates to an optical sorting color sorter group, which solves the technical problems of poor linkage of existing color sorters, large floor area of belt conveying, and easy crossing, and realizes that a circulating closed-circuit ore dressing can be formed by one optical sorting color sorter group to obtain final concentrate and tailings.

[0046] The optical color sorter unit includes: at least three optical color sorters, which are divided into at least three groups, and each group includes at least one color sorter; the at least three groups include at least a rough selection group, a fine selection group, and a scavenging group, and the color sorters of each group are stacked vertically;

[0047] The concentrate discharge end of the rough selection group color sorter is communicated with the feed end of the fine selection group color sorter through a lifting conveyor structure or a gravity self-conveyor structure;

[0048] The tailings discharge end of the rough selection group color sorter is communicated with the feed end of the scavenging group color sorter through a lifting conveyor structure or a gravity self-conveyor structure;

[0049] The tailings discharge end of the fine selection group color sorter is communicated with the feed end of the rough selection group color sorter through a lifting conveyor structure or a gravity self-conveyor structure;

[0050] The concentrate discharge end of the scavenging group color sorter is communicated with the feed end of the rough selection group color sorter through a lifting conveyor structure or a gravity self-conveyor structure.

[0051] Through the color sorter unit of this embodiment, after the ore to be sorted is fed into the rough selection group color sorter, the selected target ore (concentrate) is automatically conveyed to the fine selection group color sorter. The fine selection group color sorter performs secondary sorting on the roughly selected target ore to select high-grade concentrate. The tailings selected by the fine selection group color sorter are automatically recycled to the rough selection group color sorter for re-optical sorting, forming a closed loop; the tailings selected by the rough selection group color sorter are automatically conveyed to the scavenging group color sorter for sorting by the color sorter of the scavenging group. The target ore (middlings) obtained by the scavenging group color sorter is automatically conveyed to the rough selection group color sorter for re-sorting, forming a second closed loop; the tailings obtained by the scavenging group color sorter are directly output. Through the two closed-loop beneficiations, the ore to be selected can be sorted more accurately to obtain the final concentrate and tailings. Moreover, since the color sorters of the rough selection group, the fine selection group, and the scavenging group are stacked vertically and connected by a lifting conveyor structure or a gravity self-conveyor structure, while realizing the function of closed-loop beneficiation, the floor area of the color sorter is effectively reduced, and the problem of easy intersection of belt conveyors is avoided.

[0052] As a further improvement, in this embodiment, the color sorters of each group are arranged in a stepped manner stacked vertically. So that the selected target ore or tailings on the upper layer can flow more conveniently and smoothly into the feed end of the lower layer color sorter under the action of gravity.

[0053] As a further improvement, the rough selection group color sorter, the fine selection group color sorter, and the scavenging group color sorter can be stacked vertically or arranged in a stepped manner stacked vertically through the same support.

[0054] As a further improvement, the above-mentioned first lifting and conveying structure or the second lifting and conveying structure is one of the following: a lifting bucket conveyor structure, a spiral lifting conveyor structure, or a steeply inclined belt conveyor structure.

[0055] As a further improvement, the first gravity self-conveying structure or the second gravity self-conveying structure is one of the following or any combination thereof: a funnel structure, a pipeline structure, or a slide structure.

[0056] The second embodiment of the present invention also relates to an optical sorting and color sorting machine set, including a rough sorting working group 101, a fine sorting working group 102, and a scavenging sorting working group 103. In this embodiment, the rough sorting optical sorting and color sorting machine (referred to as the color sorting machine) is located in the middle layer, the fine sorting color sorting machine is located above the rough sorting color sorting machine, and the scavenging sorting color sorting machine is located below the rough sorting color sorting machine.

[0057] The concentrate discharge end of the rough sorting color sorting machine is connected to the feed end of the fine sorting color sorting machine through a first lifting and conveying structure, and the target ore selected by the rough sorting color sorting machine is conveyed to the feed end of the fine sorting color sorting machine through the first lifting and conveying structure;

[0058] The tailing discharge end of the fine sorting color sorting machine is connected to the feed end of the rough sorting color sorting machine through a first gravity self-conveying structure, and the tailings output by the fine sorting color sorting machine are automatically conveyed to the feed end of the rough sorting color sorting machine through the first gravity self-conveying structure;

[0059] The tailing discharge end of the rough sorting color sorting machine is connected to the feed end of the scavenging sorting color sorting machine through a second gravity self-conveying structure, and the tailings output by the rough sorting color sorting machine are automatically conveyed to the feed end of the scavenging sorting color sorting machine through the second gravity self-conveying structure;

[0060] The concentrate discharge end of the scavenging sorting color sorting machine is connected to the feed end of the rough sorting color sorting machine through a second lifting and conveying structure, and the target ore output by the scavenging sorting color sorting machine is conveyed to the feed end of the rough sorting color sorting machine through the second lifting and conveying structure.

[0061] The structure of this embodiment is more suitable for the situation where the color sorting machine performs forward sorting. In specific implementation, each working group can consist of a vibrating feeder, a color sorting machine, and a distributing funnel as an independent part. The equipment of the three working groups is arranged on the same support, and is stacked from top to bottom in the order of the fine sorting working group 102, the rough sorting working group 101, and the scavenging sorting working group 103. The target ore selected by the color sorting machine of each working group flows through the distributing funnel to the bucket elevator (lifting and conveying structure), and returns to the feed end of the working group on the upper layer through the bucket elevator. The tailings remaining after the color sorting machine selection flow through the distributing funnel (gravity self-conveying structure) and flow by gravity to the vibrating feeder of the working group on the lower layer. In specific implementation, the color sorting machines of each working group can be arranged in a stepped shape in the upper and lower layers. So that the tailings discharged from the upper layer color sorting machine can flow more conveniently and smoothly into the feed end of the lower layer color sorting machine under the action of gravity.

[0062] Specifically, as Figure 1 shown, the optically sorted raw ore is conveyed by the feeding belt of the rough selection working group 101 in the middle layer to the vibrating feeder 1011 of the color sorter in the rough selection group. The vibrating feeder evenly spreads the material and conveys it to the feeding end of the rough selection group color sorter 1012. Inside the rough selection group color sorter 1012, the ore to be sorted generates a color reaction under the illumination of the light source. Under the resolution of the internal high-speed camera, the high-speed solenoid valve is opened through a signal to blow out the target minerals. The output end of the color sorter 1012 is connected to a distributing funnel 1013 (distributing module). The distributing funnel 1013 is respectively connected to the medium ore box and the tailing box, and outputs the target minerals blown out by the color sorter to the medium ore box and the tailings to the tailing box. The medium ore box is connected to a bucket elevator 1014 (the first lifting and conveying structure). The target minerals blown out by the color sorter 1012 flow by gravity into the medium ore box of the distributing funnel 1013, then flow by gravity into the bucket elevator 1014, and are transported by the bucket elevator to the vibrating feeder 1021 of the upper layer's fine selection group. The materials not blown out by the color sorter 1012 (i.e., tailings) flow by gravity into the tailing box of the distributing funnel 1013 and flow by gravity into the vibrating feeder 1031 of the scavenging group.

[0063] The rough selection target ore conveyed to the vibrating feeder 1021 of the fine selection group is evenly spread and fed into the fine selection group color sorter 1022. The color sorter 1022 selects the final concentrate through optical sorting and blowing; the tailings not blown out by the fine selection group color sorter 1022 flow by gravity through the distributing funnel 1023 into the tailing box and then flow by gravity to the vibrating feeder 1011 of the rough selection group color sorter in the middle layer for re-rough selection.

[0064] The rough selection tailings flowing from the rough selection group to the vibrating feeder 1031 of the scavenging group are evenly spread and fed into the scavenging group color sorter 1032. The target minerals blown out by the scavenging color sorter 1032 form scavenging medium ore in the medium ore box of the distributing funnel 1033 and flow by gravity to the bucket elevator 1034, and are returned to the vibrating feeder 1011 of the middle rough selection group color sorter through the bucket elevator 1034 for re-rough selection. The tailings not blown out by the scavenging color sorter 1032 form the final tailings under the action of gravity through the distributing funnel.

[0065] In summary, for the entire optical sorting color sorter unit, the low-grade tailings of each working group flow by gravity through the funnel into the vibrating feeder of the next working group and flow into the feeding port of the color sorter of the next working group; the high-grade concentrates (target ores) of each working group flow by gravity into the bucket elevator and are returned to the working group on the upper layer, realizing two closed-circuit beneficiation circulation processes, and finally obtaining the target concentrates and tailings after cyclic sorting. The grade and recovery rate of the concentrates are improved, and the loss in the tailings is reduced; and the self-flow of the tailings is realized through the height difference, reducing the space required for arranging the transfer belt, reducing the floor area of the color sorter unit, and at the same time avoiding the interference of material transmission caused by the cross arrangement of the belts.

[0066] In this embodiment, the rough selection color sorter group is arranged on the middle layer, the fine selection color sorter group is arranged on the upper layer, and the scavenging selection color sorter group is arranged on the lower layer. This structure makes the paths of the above two closed-circuit circulating ore dressing reach the shortest. While realizing the function of closed-circuit circulating ore dressing and reducing the floor area of the color sorter, it further shortens the circulating path of the color sorter group and improves the working efficiency of the color sorter group.

[0067] It should be noted that in the above example, the color sorter is preferably set to the forward selection mode, but it does not mean that the color sorter cannot adopt the reverse selection mode under this structure. When the color sorter adopts the reverse selection mode, the feeding module can be adjusted to make the tailings blown out by the color sorter flow to the lower working group by gravity, and the unblown target ore flows into the bucket elevator and returns to the upper working group. The above two closed-circuit circulating ore dressing processes can also be realized, and finally the target concentrate and tailings after cyclic picking are obtained.

[0068] The third embodiment of the present utility model also relates to an optical selection color sorter group, including a rough selection working group 101, a fine selection working group 102 and a scavenging selection working group 103. In this embodiment, the rough selection color sorter group is located in the middle layer, the fine selection color sorter group is located below the rough selection color sorter group, and the scavenging selection color sorter group is located above the rough selection color sorter group.

[0069] The concentrate discharge end of the rough selection color sorter group is communicated with the feed end of the fine selection color sorter group through a first gravity self-transmission structure, and the target ore output by the rough selection color sorter group is automatically transmitted to the feed end of the fine selection color sorter group through the first gravity self-transmission structure;

[0070] The tailings discharge end of the fine selection color sorter group is communicated with the feed end of the rough selection color sorter group through a first lifting transmission structure, and the tailings output by the fine selection color sorter group are transmitted to the feed end of the rough selection color sorter group through the first lifting transmission structure;

[0071] The tailings discharge end of the rough selection color sorter group is communicated with the feed end of the scavenging selection color sorter group through a second lifting transmission structure, and the tailings output by the rough selection color sorter group are transmitted to the feed end of the scavenging selection color sorter group through the second lifting transmission structure;

[0072] The concentrate discharge end of the scavenging selection color sorter group is communicated with the feed end of the rough selection color sorter group through a second gravity self-transmission structure, and the target ore output by the scavenging selection color sorter group is automatically transmitted to the feed end of the rough selection color sorter group through the second gravity self-transmission structure.

[0073] The structure of this embodiment is more suitable for the case where the color sorter performs reverse selection. In specific implementation, each working group can also consist of a vibrating feeder, a color sorter, and a distributing funnel as an independent part. Or, the feeding module, the color sorting module, and the distributing module can also be integrated in the color sorter. The integration or independence of each functional module does not affect the effect of the embodiment of the present application.

[0074] In this embodiment, the equipment of the three working groups is arranged on the same bracket, and is stacked from top to bottom as the screening working group, the rough selection working group, and the fine selection working group. The tailings blown out by the color sorters of each working group flow through the distributing hopper to the bucket elevator (lifting and conveying structure), and are returned to the feeding end of the working group on the upper layer through the bucket elevator. The target ore that is not blown out by the color sorter flows by gravity through the distributing hopper (gravity self-conveying structure) to the vibrating feeder of the working group on the lower layer. In specific implementation, the color sorters of each working group can be arranged in a stepped manner in upper and lower layers. So that the target minerals discharged from the color sorter on the upper layer can flow more conveniently and smoothly into the feeding end of the color sorter on the lower layer under the action of gravity.

[0075] Specifically, as Figure 2 shown, the optically sorted raw ore is conveyed to the vibrating feeder 1011 of the color sorter of the rough selection group through the feeding belt 1010 of the rough selection group in the middle layer. The vibrating feeder makes the material evenly spread out and conveys it to the feeding end of the rough selection group color sorter 1012. Inside the rough selection group color sorter 1012, the color sorter is set for reverse selection. The ore to be sorted produces a color reaction under the illumination of the light source. Under the discrimination of the high-speed camera inside, the high-speed solenoid valve is opened through a signal to blow out other minerals (tailings) different from the target minerals. The output end of the color sorter 1012 is connected to the distributing hopper 1013 (distributing module). The distributing hopper 1013 is respectively connected to the middlings box and the tailings box, and outputs the tailings blown out by the color sorter to the tailings box, and the remaining ore that is not blown out is output to the middlings box. The tailings box is connected to a bucket elevator 1014 (the first lifting and conveying structure). The tailings blown out by the color sorter 1012 flow by gravity into the tailings box of the distributing hopper 1013, then flow by gravity into the bucket elevator 1014, and are transported by the bucket elevator 1014 to the vibrating feeder 1031 of the upper screening group. The material that is not blown out by the color sorter 1012 (i.e., the target mineral) flows by gravity into the middlings box of the distributing hopper 1013 and then flows by gravity into the vibrating feeder 1021 of the fine selection group.

[0076] The rough selection target ore conveyed to the vibrating feeder 1021 of the fine selection group is evenly spread out and fed into the fine selection group color sorter 1022. The color sorter 1022 further blows out the non-target ore (tailings) through optical sorting. The blown non-target ore flows by gravity into the tailings box through the distributing hopper 1023, then flows by gravity into the bucket elevator 1024, and is transported by the bucket elevator 1024 to the vibrating feeder 1011 of the upper rough selection group. The concentrate remaining after the color sorter 1022 of the fine selection group blows out flows by gravity into the middlings box through the distributing hopper 1023 to form the final concentrate.

[0077] The rough tailings in the vibrating feeder 1031 flowing from the rough selection group to the scavenging group are evenly spread and fed into the scavenging group color sorter 1032. The non-target minerals blown by the scavenging color sorter 1032 form the final scavenging tailings in the middlings box of the distributing funnel 1033; the target minerals not blown by the scavenging color sorter 1032 flow by gravity through the distributing funnel 1033 into the vibrating feeder 1011 of the middle rough selection group color sorter for re-rough selection.

[0078] In summary, for the entire optical sorting and color sorting unit, the low-grade tailings of each working group flow by gravity into the bucket elevator and return to the upper working group for further optical sorting; the target ores of each working group flow by gravity through the funnel into the vibrating feeder of the next working group and then into the feed inlet of the color sorter of the next working group; the working group realizes a closed-circuit beneficiation process, and finally obtains the target concentrate and tailings after cyclic sorting. This improves the concentrate grade and recovery rate, reduces the loss in the tailings; and realizes the gravity flow of the tailings through the height difference, reduces the space required for arranging the transfer belt, reduces the floor area of the color sorting unit, and at the same time avoids the interference of material transmission caused by the cross arrangement of the belts.

[0079] In this embodiment, the rough selection group color sorters are arranged in the middle layer, the fine selection group color sorters are arranged in the lower layer, and the scavenging group color sorters are arranged in the upper layer. This structure makes the paths of the above two closed-circuit cyclic beneficiation the shortest. While realizing the function of closed-circuit cyclic beneficiation and reducing the floor area of the color sorters, it further shortens the cyclic path of the color sorting unit and improves the working efficiency of the color sorting unit.

[0080] It should be noted that in the above example, the color sorter is preferably set to the reverse selection mode, but it does not mean that the color sorter cannot adopt the forward selection mode under this structure. When the color sorter adopts the forward selection mode, the distribution module can be adjusted to make the target minerals blown by the color sorter flow by gravity to the lower working group, and the unblown tailings flow into the bucket elevator and return to the upper working group. Similarly, a closed-circuit beneficiation process can be realized, and finally the target concentrate and tailings after cyclic sorting can be obtained.

[0081] The fourth embodiment of the present utility model also relates to an optical sorting and color sorting unit. In this embodiment, each of the rough selection working group, the fine selection working group, and the scavenging working group includes a color sorter. Or, each working group can also be composed of a vibrating feeder, a color sorter, and a distributing funnel as an independent part; a rough selection working group, a fine selection working group, and a scavenging working group form an optical sorting and color sorting working group, and a region includes multiple optical sorting and color sorting working groups to form a large working group, as Figure 3 shown. By this method, the amount of ore processed at one time can be increased, and the working efficiency of the color sorting unit can be further improved.

[0082] The fifth embodiment of the present utility model also relates to an optical color sorting machine set. In this embodiment, it includes two working groups, one is a rough sorting group and the other is a fine sorting group. The color sorters of each group are stacked vertically.

[0083] The concentrate discharge end of the color sorter in the rough sorting group is connected to the feed end of the color sorter in the fine sorting group through a lifting conveyor structure or a gravity self-conveyor structure. The target ore output is sent to the feed end of the color sorter in the fine sorting group through the lifting conveyor structure or the gravity self-conveyor structure.

[0084] Compared with the prior art, in the embodiment of the present utility model, through the above structural arrangement, after the ore to be sorted is fed into the color sorter in the rough sorting group, the selected target ore (concentrate) is automatically conveyed to the color sorter in the fine sorting group. The color sorter in the fine sorting group performs secondary sorting on the roughly sorted target ore to select high-grade concentrate. The tailings selected by the color sorter in the fine sorting group are automatically recycled to the color sorter in the rough sorting group for re-optical sorting, forming a cycle; through closed-circuit circulation ore dressing, the ore to be selected can be sorted more accurately to obtain the final concentrate. Moreover, since the color sorters of the rough sorting group and the fine sorting group are stacked vertically and connected by a lifting conveyor structure or a gravity self-conveyor structure, while realizing the function of closed-circuit circulation ore dressing, the floor area of the color sorters is effectively reduced, and the problem of easy crossing of belt conveyors is avoided. In this embodiment, the specific structures and connection methods of the color sorters of each layer of working groups are similar to those of the second and third embodiments, and will not be elaborated here.

[0085] The sixth embodiment of the present utility model also relates to an optical color sorting machine set, including: two groups of optical color sorters, one is a rough sorting group and the other is a scavenging group. The color sorters of each group are stacked vertically;

[0086] The tailings discharge end of the color sorter in the rough sorting group is connected to the feed end of the color sorter in the scavenging group through a lifting conveyor structure or a gravity self-conveyor structure. The output tailings are sent to the feed end of the color sorter in the scavenging group through the lifting conveyor structure or the gravity self-conveyor structure.

[0087] Compared with the prior art, in the embodiment of the present utility model, through the above structural arrangement, after the ore to be sorted is fed into the color sorter in the rough sorting group, the selected tailings are automatically conveyed to the color sorter in the scavenging group, and the color sorter in the scavenging group performs further sorting. The target ore (middlings) obtained by the color sorter in the scavenging group is automatically returned to the color sorter in the rough sorting group for re-sorting, forming a cycle; the tailings obtained by the color sorter in the scavenging group are directly output. Through this closed-circuit circulation ore dressing, the ore to be selected can be sorted more accurately to obtain the final concentrate and tailings, avoiding waste. Moreover, since the color sorters of the rough sorting group and the scavenging group are stacked vertically and connected by a lifting conveyor structure or a gravity self-conveyor structure, while realizing the function of closed-circuit circulation ore dressing, the floor area of the color sorters is effectively reduced, and the problem of easy crossing of belt conveyors is avoided.

[0088] Those of ordinary skill in the art can understand that the above embodiments are specific examples for implementing the present utility model, and in actual applications, various changes can be made to them in form and details without departing from the spirit and scope of the present utility model.

Claims

1. An optical color sorting unit, characterized in that: include: At least two groups of optical color sorters, at least one of which is a roughing group and at least one is a fine selection group, and the groups of color sorters are stacked up and down; The concentrate discharge end of the roughing group color sorter is connected to the feed end of the cleaning group color sorter through a lifting and conveying structure or a gravity self-conveying structure, and the output target ore is delivered to the feed end of the cleaning group color sorter through the lifting and conveying structure or the gravity self-conveying structure.

2. An optical color sorting unit, characterized in that: include: At least two groups of optical color sorters, at least one of which is a roughing group and at least one is a scanning group, and the groups of color sorters are stacked up and down; The tailings discharge end of the roughing group color sorter is connected to the feed end of the scavenging group color sorter through a lifting and conveying structure or a gravity self-conveying structure, and the output tailings are sent to the feed end of the scavenging group color sorter through the lifting and conveying structure or the gravity self-conveying structure.

3. An optical color sorting unit, characterized in that: include: At least three optical color sorters, the at least three optical color sorters are divided into at least three groups, each group includes at least one color sorter; the three groups include at least one roughing group, one fine selection group and one scanning group, and the color sorters of each group are stacked up and down; The concentrate discharge end of the roughing group color sorter is connected to the feed end of the cleaning group color sorter through a lifting transmission structure or a gravity self-transmission structure; The tailings discharge end of the roughing group color sorter is connected to the feed end of the scavenging group color sorter through a lifting transmission structure or a gravity self-transmission structure; The tailings discharge end of the color sorter of the cleaning group is connected with the feed end of the color sorter of the roughing group through a lifting transmission structure or a gravity self-transmission structure; The concentrate discharge end of the scavenging group color sorter is connected to the feed end of the roughing group color sorter through a lifting transmission structure or a gravity self-transmission structure.

4. The optical color sorting unit according to claim 3, characterized in that: The roughing group color sorter is located in the middle layer, the cleaning group color sorter is located above the roughing group color sorter, and the sweeping group color sorter is located below the roughing group color sorter; The concentrate discharge end of the roughing group color sorter is connected to the feed end of the cleaning group color sorter through a first lifting and conveying structure, and the target ore output from the roughing group color sorter is conveyed to the feed end of the cleaning group color sorter through the first lifting and conveying structure; The tailings discharge end of the selective group color sorter is connected to the feed end of the roughing group color sorter through a first gravity self-transmission structure, and the tailings output by the selective group color sorter are automatically transmitted to the feed end of the roughing group color sorter through the first gravity self-transmission structure; The tailings discharge end of the roughing group color sorter is connected to the feed end of the scavenging group color sorter through a second gravity self-transmission structure, and the tailings output by the roughing group color sorter are automatically transmitted to the feed end of the scavenging group color sorter through the second gravity self-transmission structure; The concentrate discharge end of the scavenging group color sorter is connected to the feed end of the roughing group color sorter through a second lifting and conveying structure, and the target ore output by the scavenging group color sorter is conveyed to the feed end of the roughing group color sorter through the second lifting and conveying structure.

5. The optical color sorting unit according to claim 3, characterized in that: The roughing group color sorter is located in the middle layer, the cleaning group color sorter is located below the roughing group color sorter, and the scanning group color sorter is located above the roughing group color sorter; The concentrate discharge end of the roughing group color sorter is connected to the feed end of the concentrating group color sorter through a first gravity self-transmission structure, and the target ore output from the roughing group color sorter is automatically transported to the feed end of the concentrating group color sorter through the first gravity self-transmission structure; The tailings discharge end of the cleaning group color sorter is connected to the feed end of the roughing group color sorter through a first lifting and conveying structure, and the tailings output by the cleaning group color sorter are conveyed to the feed end of the roughing group color sorter through the first lifting and conveying structure; The tailings discharge end of the roughing group color sorter is connected to the feed end of the scavenging group color sorter through a second lifting and conveying structure, and the tailings output by the roughing group color sorter are conveyed to the feed end of the scavenging group color sorter through the second lifting and conveying structure; The concentrate discharge end of the scavenging group color sorter is connected to the feed end of the roughing group color sorter through a second gravity self-conveying structure, and the target ore output by the scavenging group color sorter is automatically conveyed to the feed end of the roughing group color sorter through the second gravity self-conveying structure.

6. The optical color sorting unit according to claim 3, characterized in that: The color sorting machines are arranged in a stepped manner stacked up and down.

7. The optical color sorting unit according to claim 3, characterized in that: The roughing group color sorter, the cleaning group color sorter and / or the scanning group color sorter are stacked and distributed up and down through the same bracket.

8. The optical color sorting unit according to claim 3, characterized in that: The lifting and conveying structure is one of the following: Lifting bucket conveying structure, spiral lifting conveying structure, or large-angle belt conveying structure.

9. The optical color sorting unit according to claim 3, characterized in that: The gravity self-transportation structure is one of the following or any combination thereof: Funnel structure, pipe structure, slide structure.

10. The optical color sorting unit according to claim 3, characterized in that: The roughing group, the fine selection group and the scanning selection group each include at least one color sorter, forming a color sorter working group, and one area includes at least two color sorter working groups.

11. The optical color sorting unit according to claim 3, characterized in that: The roughing group, the cleaning group and / or the scavenging group further include respective vibrating feeders, and the vibrating feeder of each group is connected to the feeding end of the color sorter of the group; Each of the lifting and conveying structures or gravity self-conveying structures is connected to each group of vibrating feeders, and is connected to the feeding end of each group of color sorters through the vibrating feeders.

12. The optical color sorting unit according to claim 3, characterized in that: The roughing group, the cleaning group and / or the scavenging group further include respective material separation modules, through which the concentrate selected by the color sorter is sent to the concentrate discharge end, and the tailings selected by the color sorter is sent to the tailings discharge end.

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