Copper concentrate batching system and smelting plant

Abstract

The utility model discloses a copper concentrate batching system and a smelting factory, the system comprises a warehousing device, a warehouse and a feeding device, the warehouse comprises a grabbing device and a plurality of raw material warehouses, and the plurality of raw material warehouses are configured to store a plurality of raw materials for copper smelting in a one-to-one correspondence manner; wherein the warehousing device is configured to distribute various raw materials to corresponding raw material warehouses in a classified manner; the warehouse is configured to grab the raw materials from the multiple raw material warehouses through the grabbing device and convey the grabbed raw materials to the feeding device; and the feeding device is configured to convey the uniformly mixed raw materials to a top-blowing smelting furnace for copper smelting. The copper concentrate batching system is uniform in batching, beneficial to stabilizing furnace conditions, and capable of reducing cost and increasing income.

Description

Technical Field

[0001] The utility model relates to the technical field of metal smelting, in particular to a copper concentrate batching system and a smelting plant. Background Art

[0002] The raw materials of the copper smelting process are diverse and complex. A copper smelting plant may receive copper raw materials supplied by dozens of suppliers at the same time. The colors, particle sizes, specific gravities, and chemical compositions of different types of copper concentrates are all different. Worse still, the physical and chemical components of the raw materials supplied by the same supplier are uneven and unstable. Many concentrates with unknown components are directly sent to the pyrometallurgical section without being sampled and analyzed. At the same time, the components of the mixed concentrates prepared by the related technologies of bin batching and stack batching are variable, which brings great trouble to the operation of the subsequent pyrometallurgical section. Improper or untimely disposal will lead to accidents such as furnace blockage, melt leakage, and foaming slag in the smelting furnace. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems in the related technologies to some extent. For this purpose, the purpose of the utility model is to provide a copper concentrate batching system and a smelting plant, so as to make the batching uniform, stabilize the furnace condition, reduce costs, and increase benefits.

[0004] To achieve the above object, the first aspect of the utility model provides a copper concentrate batching system, which includes: a warehousing device, a warehouse, and a feeding device. The warehouse includes a grasping device and a plurality of raw material warehouses, and the plurality of raw material warehouses are configured to store a variety of raw materials for copper smelting in one-to-one correspondence; wherein, the warehousing device is configured to classify and distribute the variety of raw materials to the corresponding raw material warehouses; the warehouse is configured to grab raw materials from the plurality of raw material warehouses through the grasping device and transport the grabbed raw materials to the feeding device; the feeding device is configured to transport the uniformly mixed raw materials to a top-blown smelting furnace for copper smelting.

[0005] In addition, the above copper concentrate batching system of the utility model may further have the following additional technical features:

[0006] In some examples, at least part of the warehousing device is arranged on the first side of the warehouse, and the feeding device is arranged on the second side of the warehouse, wherein the second side is opposite to the first side.

[0007] In some examples, the multiple raw material storage bins include an imported copper concentrate storage bin, a domestic copper concentrate storage bin, a quartz stone storage bin, a coal storage bin, and an ash storage bin. The imported copper concentrate storage bin is provided with a discharging belt. The warehousing device includes: an off-site ore discharging belt, a forklift, and multiple trucks. The off-site ore discharging belt is arranged on the third side of the warehouse and is configured to transport imported copper concentrate from the third side to the discharging belt and discharge the imported copper concentrate to the imported copper concentrate storage bin through the discharging belt, wherein the third side is perpendicular to the first side. The multiple trucks are respectively configured to transport domestic copper concentrate from the first side to the domestic copper concentrate storage bin, transport quartz stone to the quartz stone storage bin, and transport coal to the coal storage bin. The forklift is configured to transport an ash can from the first side to the ash storage bin.

[0008] In some examples, the warehousing device further includes: a spraying device, which is arranged outside the entrance on the first side of the warehouse and is configured to perform spraying work.

[0009] In some examples, the warehousing device further includes: a wheel washer, which is arranged at a position near the entrance on the first side of the warehouse and is configured to wash the wheels of the trucks.

[0010] In some examples, the warehouse further includes: a sampling area and a loader. The loader is configured to mix the raw materials grabbed by the grabbing device in multiple batches and place the mixed raw materials each time in the sampling area. After all the raw materials are mixed, the grabbing device transports the mixed raw materials from the sampling area to the feeding device.

[0011] In some examples, the warehouse further includes: a flat storage bin, which is configured to place a flat screen for screening raw materials.

[0012] In some examples, the feeding device includes: a feeding bin, a metering belt, and a belt conveyor. The feeding bin is configured to receive the raw materials transported by the grabbing device, and after metering the raw materials through the metering belt, transport them to the top-blown smelting furnace through the belt conveyor.

[0013] In some examples, the domestic copper concentrate storage bin includes a low-sulfur domestic copper concentrate sub-bin, a normal domestic copper concentrate sub-bin, and a high-sulfur domestic copper concentrate sub-bin.

[0014] To achieve the above object, a second aspect of the present invention proposes a smelting plant, including: a top-blown smelting furnace, and the above copper concentrate batching system.

[0015] The copper concentrate batching system and the smelting plant of the present invention have uniform batching, which is beneficial to stabilizing the furnace condition, can reduce costs and increase revenues. Description of the Drawings

[0016] Figure 1 It is a structural block diagram of a copper concentrate batching system according to an embodiment of the present utility model;

[0017] Figure 2 It is a structural block diagram of a copper concentrate batching system according to another embodiment of the present utility model;

[0018] Figure 3 It is a schematic diagram of a batching method according to another embodiment of the present utility model;

[0019] Figure 4 It is a structural block diagram of a smelting plant according to an embodiment of the present utility model. Detailed implementation manners

[0020] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0021] The copper concentrate batching system and the smelting plant according to the embodiments of the present utility model will be described below with reference to the accompanying drawings.

[0022] Figure 1 It is a structural block diagram of a copper concentrate batching system according to an embodiment of the present utility model.

[0023] As Figure 1 shown, the copper concentrate batching system 100 includes: a warehousing device 101, a warehouse 102, and a feeding device 103. The warehouse 102 includes a grasping device 105 and a plurality of raw material warehouses 104. The plurality of raw material warehouses 104 are configured to store various raw materials for copper smelting in a one-to-one correspondence; wherein, the warehousing device 101 is configured to classify and deliver various raw materials to the corresponding raw material warehouses 104; the warehouse 102 is configured to grab raw materials from the plurality of raw material warehouses 104 through the grasping device 105 and transport the grabbed raw materials to the feeding device 103; the feeding device 103 is configured to transport the uniformly mixed raw materials to a top-blown smelting furnace for copper smelting.

[0024] The copper concentrate batching system according to the embodiment of the present utility model has uniform batching, which is beneficial to stabilizing the furnace condition, can reduce costs and increase revenues.

[0025] In some embodiments, at least a part of the warehousing device 101 is disposed on the first side of the warehouse 102, and the feeding device 103 is disposed on the second side of the warehouse 102, wherein the second side is opposite to the first side.

[0026] In some embodiments, as Figure 2As shown in the figure, multiple raw material warehouses 104 include an imported copper concentrate warehouse 1041, a domestic copper concentrate warehouse 1042, a quartz stone warehouse 1043, a coal warehouse 1044, and an ash warehouse 1045. The imported copper concentrate warehouse 1041 is provided with a discharge belt 1046; the warehousing device 101 includes: an off-site ore unloading belt 1011, a forklift 1012, and multiple trucks 1013; the off-site ore unloading belt 1011 is arranged on the third side of the warehouse 102 and is configured to transport imported copper concentrate from the third side to the discharge belt 1046 and unload the imported copper concentrate to the imported copper concentrate warehouse 1041 through the discharge belt 1046, where the third side is perpendicular to the first side; the multiple trucks 1013 are respectively configured to transport domestic copper concentrate from the first side to the domestic copper concentrate warehouse 1042, transport quartz stone to the quartz stone warehouse 1043, and transport coal to the coal warehouse 1044; the forklift 1012 is configured to transport an ash can from the first side to the ash warehouse 1045.

[0027] Specifically, as Figure 2 shown, the domestic copper concentrate warehouse 1042 includes a low-sulfur domestic copper concentrate sub-warehouse, a normal domestic copper concentrate sub-warehouse, and a high-sulfur domestic copper concentrate sub-warehouse. The warehouse 102 may further include: an intermediate material area 109 for storing intermediate materials generated during smelting, where the intermediate materials include: black copper powder, lead matte powder, electrolytic cleaning waste, commercial cleaning waste, anode furnace cleaning waste, dry copper powder, sulfuric acid filling sand, sulfuric acid cleaning waste, sulfuric acid anthracite, polymetallic copper slag, copper oxide skin, refining cleaning waste, etc. Among them, the commercial cleaning waste may be sundries cleaned out of the warehouse 102. The main components after mixing imported copper concentrate and domestic copper concentrate are shown in Table 1:

[0028] Table 1

[0029] Component Cu (%) S(％) Fe (%) Copper concentrate charged into furnace 22.3±0.5 26.93 25.396

[0030] The ash composition is shown in Table 2:

[0031] Table 2

[0032]

[0033] In some embodiments, as Figure 2 shown, the warehousing device 101 further includes: a wheel washer 1015 arranged at a position near the entrance on the first side of the warehouse 102 and configured to clean the wheels of the trucks 1013.

[0034] In some embodiments, as Figure 2 shown, the warehousing device 101 further includes: a spraying device 1014 arranged outside the entrance on the first side of the warehouse 102 and configured to perform spraying work.

[0035] Specifically, before using the truck 1013 to unload ore, it is required that all trucks 1013 drive through the wheel washer 1015. After cleaning the sundries carried by the wheels, the ore unloading operation is carried out in front of the warehouse entrance. While the truck 1013 is unloading ore, the spraying device 1014 at the warehouse entrance is turned on to reduce dust and losses.

[0036] In some embodiments, as Figure 2 shown, the warehouse 102 further includes: a sampling area 106 and a loader 107; the loader 107 is configured to mix the raw materials grabbed by the grabbing device 105 in multiple batches and place the mixed raw materials in the sampling area 106 each time; among them, after all the raw materials are mixed evenly, the grabbing device 105 transports the mixed raw materials from the sampling area to the feeding device 103.

[0037] Specifically, after the raw materials are put into the warehouse, the raw materials are sampled and tested in the sampling area 106 according to the assay requirements, and a batching sheet is prepared based on the assay results and the production requirements of the top-blown smelting furnace. The raw materials grabbed by the grabbing device 105 are mixed in multiple batches to prepare the soot mixture. The specific method is as follows: as Figure 3 shown, a batching sheet is formulated daily and placed in the loader 107 responsible for batching; a special person registers the position and variety of the intermediate materials in the warehouse, makes records and updates them in real time; the batching process is refined, and small units are batched in multiple batches strictly according to the requirements of the batching sheet. After one batch of batching is completed, the loader 107 is immediately used to mix evenly, and then the next batch of batching is carried out, and so on, to ensure that the proportion of each batch of batching is uniform. For example: the batching sheet is 3 shovels of copper concentrate, 1 shovel of soot, 0.5 tons of miscellaneous material A, and 0.5 tons of miscellaneous material B. After these 4 kinds of materials are proportioned according to the ratio, they are fully mixed evenly, and then another batch is prepared and mixed evenly. The grabbing device 105 performs a secondary turning of the evenly mixed raw materials that have been proportioned by the loader 107. Various miscellaneous materials are fed with a bunker belt under qualified conditions to reduce batching fluctuations. Among them, miscellaneous material A is various unmixed intermediate materials, and miscellaneous material B is the mixed intermediate material. The composition table of miscellaneous material A is shown in Table 3:

[0038] Table 3

[0039] Serial number Sample name Cu (%) S(％) Fe (%) 1 Copper oxide material 47.11 3.64 0.2 2 Refining slag 36.85 6.1 \ 3 Cleaning material of anode furnace 5.49 14.21 0.63 4 Intermediate material 1 0.68 0.58 38.19 5 Oversize 21.79 4.41 24.36 6 Lead matte powder 29.64 5.74 16.78 7 Lead matte 4.50 0.67 39.47

[0040] The composition table of the soot mixture is shown in Table 4:

[0041] Table 4

[0042] Cu (%) S(％) Fe (%) Miscellaneous material A 20.87 5.05 17.09 Miscellaneous material B 19.23 5.16 16.35 Soot 8.43 5.28 10.83 Average value 16.18 5.16 14.76

[0043] The furnace inlet soot mixture is obtained by mixing the soot mixture into the copper concentrate. The composition of the furnace inlet soot mixture is shown in Table 5 according to the ratio of furnace inlet soot mixture / copper concentrate = 1 / 1, 1 / 2, 1 / 3, 1 / 4, 1 / 5:

[0044] Table 5

[0045]

[0046] In top-blown converter smelting, the copper grade of the raw materials charged into the furnace has a significant impact on the furnace condition. When the amount of materials charged into the furnace is stable, a low copper grade of the raw materials charged into the furnace will result in a low grade of matte, an increase in the amount of matte, an accelerated consumption of the lance, an intensified erosion of the copper mouth pressing plate and launder of the electric furnace, an increase in losses. On the other hand, it will prolong the blowing period of the converter and reduce the output; a high copper grade of the raw materials charged into the furnace will lead to a high grade of matte, a reduction in the amount of matte, an increase in the operating temperature, an increase in the copper content in the slag of the electric furnace, and a high content of Fe 3 O 4 in the slag, forming furnace accretion. Through long-term practice in the top-blown smelting furnace, when the copper grade of the raw materials charged into the furnace is 22.3 ± 0.5, it most meets the furnace condition requirements. According to Table 5, when the mixing ratio of the soot mixture and copper concentrate is 1 / 2, the copper grade of the raw materials charged into the furnace most meets the charging requirements (the mixing ratio will change with different selected copper concentrates).

[0047] In some embodiments, as Figure 2 shown, the feeding device 103 includes: a feeding bin 1031, a metering belt 1032, and a belt conveyor 1033; wherein, the feeding bin 1031 is configured to receive the raw materials transported by the grasping device 105, and after metering the raw materials through the metering belt 1032, transport them to the top-blown smelting furnace through the belt conveyor 1033.

[0048] Specifically, adjust the processing capacity of the metering belt 1032 according to the batching list, and the grasping device 105 transports the evenly mixed raw materials (soot mixture charged into the furnace) into the top-blown smelting furnace for smelting.

[0049] In some embodiments, as Figure 2 shown, the warehouse 102 further includes: a flat storage 108, which is configured to place a flat screen for screening raw materials.

[0050] In summary, the copper concentrate batching system of the embodiment of the present utility model batches out a uniform mixed material that meets the requirements according to the batching needs of the top-blown smelting furnace, and processes a part of the intermediate materials to make their in-furnace components as consistent with the copper concentrate as possible, achieving the purpose of reducing costs, expanding benefits, and stabilizing the production of the top-blown smelting furnace; the system optimizes the batching process of the intermediate materials, changes the batching method, adds a secondary stacking process for the grasping device, improves work efficiency, reduces the risk of mistakes, and further expands production benefits.

[0051] Figure 4 is the structural block diagram of a smelting plant according to an embodiment of the present utility model.

[0052] As Figure 4 shown, the smelting plant 400 includes: a top-blown smelting furnace 401, and the above-mentioned copper concentrate batching system 100.

[0053] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0054] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0055] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0056] In the present utility model, unless otherwise clearly specified and defined, the terms such as "mounted", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0057] In the present utility model, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0058] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present utility model.

Claims

1. A copper concentrate batching system, characterized in that: The system comprises: a storage device, a warehouse and a feeding device, wherein the warehouse comprises a grabbing device and a plurality of raw material warehouses, wherein the plurality of raw material warehouses are configured to store a plurality of raw materials for copper smelting in a one-to-one correspondence; wherein: The storage device is configured to classify and distribute the multiple raw materials to corresponding raw material warehouses; The warehouse is configured to grab raw materials from the plurality of raw material warehouses through the grabbing device and transport the grabbed raw materials to the feeding device; The feeding device is configured to transport the mixed raw materials to the top-blown smelting furnace for copper smelting.

2. The copper concentrate batching system according to claim 1, characterized in that: The warehousing device is at least partially disposed on a first side of the warehouse, and the feeding device is disposed on a second side of the warehouse, wherein the second side is opposite to the first side.

3. The copper concentrate batching system according to claim 2, characterized in that: The multiple raw material warehouses include an imported copper concentrate warehouse, a domestic copper concentrate warehouse, a quartz stone warehouse, a coal warehouse, and a ash warehouse. The imported copper concentrate warehouse is provided with a discharge belt; the storage device includes: an off-site discharge belt, a forklift, and multiple vehicles; The off-site unloading belt is arranged on the third side of the warehouse, and is configured to transport the imported copper concentrate from the third side to the unloading belt, and unload the imported copper concentrate to the imported copper concentrate warehouse through the unloading belt, wherein the third side is perpendicular to the first side; The plurality of vehicles are respectively configured to transport domestic copper concentrate from the first side to the domestic copper concentrate storage, transport quartz stone to the quartz stone storage, and transport coal to the coal storage; The forklift is configured to transport the ashtray from the first side to the ashtray.

4. The copper concentrate batching system according to claim 3, characterized in that: The storage device also includes: The spray device is arranged outside the entrance of the first side of the warehouse and is configured to perform a spraying operation.

5. The copper concentrate batching system according to claim 3, characterized in that: The storage device also includes: A wheel washer is disposed on the first side of the warehouse near an entrance and is configured to wash wheels of the automobile.

6. The copper concentrate batching system according to claim 1, characterized in that: The warehouse also includes: a sampling area and a loader; A loader is configured to mix the raw materials grabbed by the grabbing device in multiple batches and place the mixed raw materials in each batch in the sampling area; After all the raw materials are mixed, the grabbing device transports the mixed raw materials from the sampling area to the feeding device.

7. The copper concentrate batching system according to claim 2, characterized in that: The warehouse also includes: The flat plate store is configured to place a flat plate screen for screening raw materials.

8. The copper concentrate batching system according to claim 1, characterized in that: The feeding device comprises: a feeding bin, a metering belt and a belt conveyor; wherein, The feeding bin is configured to receive the raw materials transported by the grabbing device, and after the raw materials are metered by the metering belt, they are transported to the top-blown smelting furnace by the belt conveyor.

9. The copper concentrate batching system according to claim 3, characterized in that: The domestic copper concentrate depot includes a low-sulfur domestic copper concentrate sub-depot, a normal domestic copper concentrate sub-depot and a high-sulfur domestic copper concentrate sub-depot.

10. A smelting plant, characterized in that: include: A top-blown smelting furnace, and a copper concentrate batching system according to any one of claims 1-9.

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