Graphite preparation equipment

Abstract

The utility model provides graphite preparation equipment, graphite preparation equipment includes crushing mechanism, first tower mill, hydrocyclone, flotation mechanism and tailing treatment mechanism, crushing mechanism's output end with first tower mill feed inlet intercommunication, first tower mill outlet with hydrocyclone inlet intercommunication, hydrocyclone has underflow mouth and overflow mouth, flotation mechanism has underflow mouth and overflow mouth, flotation mechanism has underflow mouth and overflow mouth. The flotation mechanism comprises a size mixing unit and a flotation unit which are communicated, the flotation unit is provided with a concentrate discharge end and a tailing discharge end, materials flowing out of the overflow port flow through the size mixing unit and the flotation unit to form corresponding concentrate and tailings, and the tailing treatment mechanism is communicated with the tailing discharge end. And the tailing treatment mechanism is provided with a material return port which is communicated with the swirler. According to the graphite ore dressing equipment, the ore dressing efficiency and the concentrate quality are remarkably improved, the ore grinding energy consumption is effectively reduced, and then the problem that the grade is low due to the fact that the graphite concentrate separation efficiency of ore dressing equipment in the prior art is low can be solved.

Description

Technical Field

[0001] This utility model relates to the technical field of battery negative electrode materials, specifically to a graphite beneficiation equipment. Background Technology

[0002] Flake graphite is the primary raw material for producing anode materials. Currently available micro-fine flake graphite, a type of graphite ore, primarily ranges in particle size from 10 to 1 μm. The natural distribution of this type of graphite ore is unique; the extremely fine and uniformly distributed intergrowth of gangue minerals and graphite particles presents a series of challenges during beneficiation. Traditional beneficiation methods, such as multi-stage grinding and flotation, while capable of handling most graphite ores, prove inadequate for micro-fine flake graphite. The core issue lies in the fact that the liberation of micro-fine graphite from gangue minerals requires more refined and energy-intensive grinding operations, increasing energy consumption and prolonging the flotation process. In conventional multi-stage grinding and flotation, ultrafine gangue minerals are difficult to effectively suppress, resulting in low separation efficiency from the graphite concentrate during the flotation stage and ultimately producing a graphite concentrate of unsatisfactory grade.

[0003] As can be seen from the above, the existing mineral processing equipment suffers from low separation efficiency of graphite concentrate, resulting in low grade. Utility Model Content

[0004] The main purpose of this utility model is to provide a graphite beneficiation equipment to solve the problem of low separation efficiency of graphite concentrate in existing beneficiation equipment, which leads to low grade.

[0005] To achieve the above objectives, according to one aspect of the present invention, a graphite beneficiation equipment is provided. The graphite beneficiation equipment includes a crushing mechanism, a first tower mill, a hydrocyclone, a flotation mechanism, and a tailings treatment mechanism. The crushing mechanism is used to crush the raw material. The output end of the crushing mechanism is connected to the feed inlet of the first tower mill. The outlet of the first tower mill is connected to the inlet of the hydrocyclone. The hydrocyclone has an underflow port and an overflow port. The underflow port is connected to the first tower mill for material return. The flotation mechanism includes a slurry conditioning unit and a flotation unit connected in series. The flotation unit has a concentrate discharge end and a tailings discharge end. The material flowing out of the overflow port flows through the slurry conditioning unit and the flotation unit to form corresponding concentrate and tailings. The tailings treatment mechanism is connected to the tailings discharge end and has a return port connected to the inlet of the hydrocyclone.

[0006] Furthermore, the flotation mechanism also includes a first thickener and a second tower mill connected in sequence. The slurry preparation unit includes a first slurry preparation unit located upstream of the first thickener and a second slurry preparation unit located downstream of the second tower mill. The flotation unit includes a first flotation machine and a second flotation machine. The first flotation machine is located between the first slurry preparation unit and the first thickener. The concentrate discharge end of the first slurry preparation unit is connected to the first thickener. Part of the tailings discharge end of the first flotation machine is connected to the tailings treatment mechanism. The second flotation machine is located downstream of the second slurry preparation unit. The tailings discharge end of the second flotation machine is connected to the tailings treatment mechanism.

[0007] Furthermore, multiple first slurry conditioners are provided and connected in series. The first slurry conditioner located at the first end of the multiple first slurry conditioners is connected to the overflow port for material inflow. The first slurry conditioner located at the second end of the multiple first slurry conditioners is connected to the first flotation machine for material discharge. The material flowing out of the overflow port of the hydrocyclone flows sequentially through the multiple first slurry conditioners to the first flotation machine. Each of the multiple first slurry conditioners has an additive port. Multiple second slurry conditioners are provided and connected in series. The second slurry conditioner located at the first end of the multiple second slurry conditioners is connected to the second tower mill. The second slurry conditioner located at the second end of the multiple second slurry conditioners is connected to the second flotation machine. The material flowing out of the second tower mill flows sequentially through the multiple second slurry conditioners to the second flotation machine. Each of the multiple second slurry conditioners has an additive port.

[0008] Furthermore, multiple first flotation machines are provided and connected in series. The first slurry conditioner is connected to the first first flotation machine. In two adjacent first flotation machines, the concentrate discharge end of the upstream first flotation machine is connected to the inlet of the downstream first flotation machine.

[0009] Furthermore, multiple first flotation machines form an upstream first number of first flotation machines and a downstream second number of first flotation machines. The graphite beneficiation equipment also includes a tailings collection device. The tailings discharge end of the first number of first flotation machines is connected to the tailings collection device, and the tailings discharge end of the second number of first flotation machines is connected to the tailings processing mechanism.

[0010] Furthermore, multiple second flotation machines are provided and connected in series. The second flotation machine located at the first end of the multiple second flotation machines is connected to the second slurry conditioner. In two adjacent second flotation machines, the concentrate discharge end of the upstream second flotation machine is connected to the inlet of the downstream second flotation machine. The tailings discharge end of each second flotation machine is connected to the tailings treatment mechanism. The graphite beneficiation equipment also includes a concentrate collection device. The concentrate discharge end of the second flotation machine located at the second end of the multiple second flotation machines is connected to the concentrate collection device.

[0011] Furthermore, the tailings treatment unit includes a second thickener, a third tower mill, and a third flotation machine arranged in sequence. The tailings discharge end of the flotation machine unit is connected to the second thickener. The third flotation machine has a tailings discharge end and a concentrate discharge end. The concentrate discharge end of the third flotation machine is a return feed port. The graphite beneficiation equipment also includes a tailings collection device. The tailings discharge end of the third flotation machine is connected to the tailings collection device.

[0012] Furthermore, the crushing mechanism includes a jaw crusher, a cyclone pulverizer, and a dust collector arranged in sequence. The raw material passes through the jaw crusher and the cyclone pulverizer in sequence to form particles of different sizes, and the particles of different sizes are sorted after passing through the dust collector.

[0013] Furthermore, the graphite beneficiation equipment also includes a storage silo and a transport component. The storage silo is located at and connected to the discharge port of the dust collector. The transport component is located below the storage silo of the crushing mechanism and is used for material transfer. The output end of the transport component is opposite to and connected to the inlet end of the first tower mill.

[0014] Furthermore, the graphite beneficiation equipment also includes water pipes, sensors, and a drying structure. The water pipes are connected to the first tower mill to supply water, the sensors are installed in the first tower mill for concentration detection, and the drying structure is installed at the concentrate output end of the second flotation machine of the flotation unit for drying.

[0015] According to the technical solution of this utility model, the graphite beneficiation equipment includes a crushing mechanism, a first tower mill, a hydrocyclone, a flotation mechanism, and a tailings treatment mechanism. The crushing mechanism is used to crush the raw ore. The output end of the crushing mechanism is connected to the feed inlet of the first tower mill. The outlet of the first tower mill is connected to the inlet of the hydrocyclone. The hydrocyclone has an underflow port and an overflow port. The underflow port is connected to the first tower mill for material return. The flotation mechanism includes a slurry conditioning unit and a flotation unit connected in series. The flotation unit has a concentrate discharge end and a tailings discharge end. The material flowing out of the overflow port flows through the slurry conditioning unit and the flotation unit to form corresponding concentrate and tailings. The tailings treatment mechanism is connected to the tailings discharge end and has a return port connected to the inlet of the hydrocyclone.

[0016] As can be seen from the above, the graphite beneficiation equipment of this application uses a crushing mechanism, a first tower mill, a hydrocyclone, and a flotation mechanism arranged in sequence to generate corresponding concentrates and tailings from the raw ore, which significantly improves the beneficiation efficiency and concentrate quality of fine-grained, difficult-to-benefit graphite. The structural design of this application, through the combination of the crushing mechanism and the first tower mill, effectively reduces grinding energy consumption, shortens the number of grinding stages, and achieves full liberation of graphite from gangue minerals. After the material is screened by the hydrocyclone, the granular material of the target size is processed by the slurry conditioning unit and the flotation unit to generate high-grade concentrate. The application of slurry conditioning and flotation processes significantly improves the fixed carbon content of the final concentrate and increases the concentrate generation efficiency.

[0017] This application also includes a tailings treatment facility to reprocess the tailings and return the treated tailings to the hydrocyclone for further processing, effectively recovering valuable graphite components. This reusable structure reduces resource waste in tailings discharge and improves the stability and efficiency of the entire system. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 This is a schematic diagram of the graphite beneficiation equipment provided by this utility model.

[0020] 10. Crushing mechanism; 110. Jaw crusher; 120. Cyclone mill; 130. Dust collector; 20. First tower mill; 30. Hydrocyclone; 40. First slurry conditioner; 50. First flotation machine; 60. First thickener; 70. Second tower mill; 80. Second slurry conditioner; 90. Second flotation machine; 100. Tailings treatment mechanism; 1010. Second thickener; 1020. Third tower mill; 1030. Third flotation machine. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0023] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0024] To address the problem of low separation efficiency and low grade of graphite concentrate in existing mineral processing equipment, this application provides a graphite mineral processing device.

[0025] like Figure 1As shown, the graphite beneficiation equipment includes a crushing mechanism 10, a first tower mill 20, a hydrocyclone 30, a flotation mechanism, and a tailings treatment mechanism 100. The crushing mechanism 10, the first tower mill 20, the hydrocyclone 30, the flotation mechanism, and the tailings treatment mechanism 100 work together to form graphite concentrate.

[0026] Specifically, the output end of the crushing mechanism 10 is connected to the feed inlet of the first tower mill 20, the outlet of the first tower mill 20 is connected to the inlet of the hydrocyclone 30, the hydrocyclone 30 has an underflow port and an overflow port, the underflow port is connected to the first tower mill 20 for material return, the flotation mechanism includes a slurry conditioning unit and a flotation unit connected in series, the flotation unit has a concentrate discharge end and a tailings discharge end, the material flowing out of the overflow port flows through the slurry conditioning unit and the flotation unit to form corresponding concentrate and tailings, the tailings treatment mechanism 100 is connected to the tailings discharge end, the tailings treatment mechanism 100 has a return port, the return port is connected to the inlet of the hydrocyclone 30 for material recycling.

[0027] In this embodiment, the graphite beneficiation equipment of this application uses a crushing mechanism 10, a first tower mill 20, a hydrocyclone 30, and a flotation mechanism arranged in sequence to generate corresponding concentrates and tailings from the raw ore, which significantly improves the beneficiation efficiency and concentrate quality of fine-grained, difficult-to-benefit graphite. The structural design of this application, through the combination of the crushing mechanism 10 and the first tower mill 20, effectively reduces grinding energy consumption, shortens the number of grinding stages, and achieves full liberation of graphite from gangue minerals. After the material is screened by the hydrocyclone 30, the granular material of the target size is processed by the slurry preparation unit and the flotation unit to generate high-grade concentrate. The application of slurry preparation and flotation processes significantly improves the fixed carbon content of the final concentrate and increases the concentrate generation efficiency.

[0028] Among them, the crushing mechanism 10 is the starting point of the entire mineral processing process. The crushing mechanism 10 is used to crush the raw mineral material, such as fine-grained flake graphite material. The crushing mechanism 10 includes a jaw crusher 110, a cyclone pulverizer 120 and a dust collector 130 connected in sequence. The raw mineral material passes through the jaw crusher 110 and the cyclone pulverizer 120 in sequence to form particles of different sizes. The particles of different sizes are sorted after passing through the dust collector 130.

[0029] The raw material first enters the jaw crusher 110, where it is initially crushed into smaller particles. These particles then enter the cyclone pulverizer 120. Based on the impact friction pulverization mechanism, the material is driven by two upper and lower discs rotating in different directions within the crusher chamber, resulting in mutual crushing and further refinement. The crushed particles then enter the dust collector 130, which is equipped with a screen. This application utilizes the screen in the dust collector 130 to allow small particles to pass through while large particles cannot, thus achieving particle classification in the dust collector 130 to form qualified particles. The qualified particles after crushing have a particle size distribution of at least 50% -100 mesh. Larger particles on the screen of the dust collector 130 can be manually transferred back to the jaw crusher 110.

[0030] In this embodiment, the graphite beneficiation equipment also includes a storage bin and a transport component. The storage bin is located at and connected to the discharge port of the dust collector 130, and is used to receive particulate materials. The transport component is located below the storage bin of the crushing mechanism 10, and is used for material transfer. The output end of the transport component is opposite to and connected to the inlet end of the first tower mill 20.

[0031] The conveyor is a belt. Driven by a motor, the conveyor rotates and the granular material enters the storage silo after passing through the dust collector 130. The material is then transferred from the storage silo to the conveyor, which then transfers the granular material into the interior of the first tower mill 20.

[0032] After being processed by the crushing mechanism 10, the raw ore is formed into granular material, which then enters the first tower mill 20 for grinding. The first tower mill 20 is a high-efficiency grinding equipment that can grind the ore into finer particles, promoting the full liberation of graphite and gangue minerals. The outlet of the first tower mill 20 is connected to the inlet of the hydrocyclone 30, through which the material enters the hydrocyclone 30 for classification.

[0033] In this embodiment, the graphite beneficiation equipment also includes water pipes and sensors. The water pipes are connected to the first mill 20 to supply water, and the sensors are installed in the first mill 20 for concentration detection. During the grinding process inside the first mill 20, water can be injected through the water pipes to adjust the slurry concentration or to use recycled production water to adjust the slurry concentration, ensuring that the grinding concentration inside the first mill 20 remains within a preset range. The sensors perform real-time concentration detection to ensure the accuracy of the slurry concentration.

[0034] like Figure 1As shown, the hydrocyclone 30 is a structure in the prior art that can be used to classify particulate materials. The hydrocyclone 30 of this application is located downstream of the first tower mill 20, with its overflow port located above the low-flow port. The hydrocyclone 30 uses centrifugal force to separate the particulate materials, returning larger particles to the first tower mill 20 through the underflow port for further grinding; while smaller particles flow to the sorting mechanism through the overflow port. This cyclic classification design ensures the uniformity of the material and suitability for flotation requirements.

[0035] like Figure 1 As shown, the flotation mechanism also includes a first thickener 60 and a second tower mill 70 connected in sequence. The first thickener 60, the second tower mill 70, the slurry preparation unit, and the flotation unit cooperate to form the flotation mechanism of this application.

[0036] It is understood that the first concentrator 60, the second concentrator 1010, the first tower mill 20, the second tower mill 70, and the third tower mill 1020 in this application are all commonly used structures in the graphite field.

[0037] The slurry conditioning unit includes a first slurry conditioning machine 40 located upstream of the first thickener 60 and a second slurry conditioning machine 80 located downstream of the second tower mill 70. The flotation unit includes a first flotation machine 50 and a second flotation machine 90. The first flotation machine 50 is located between the first slurry conditioning machine 40 and the first thickener 60. The concentrate discharge end of the first slurry conditioning machine 40 is connected to the first thickener 60. Part of the tailings discharge end of the first flotation machine 50 is connected to the tailings treatment mechanism 100. The second flotation machine 90 is located downstream of the second slurry conditioning machine 80. The tailings discharge end of the second flotation machine 90 is connected to the tailings treatment mechanism 100.

[0038] Specifically, the only difference between the first mill 20 and the second mill 70 is the grinding precision. The second mill 70 is used to further refine materials with smaller particle sizes. The first slurry conditioner 40, the second slurry conditioner 80, the first flotation machine 50, the second flotation machine 90, and the third flotation machine 1030 in this application are also commonly used structures in the graphite field.

[0039] The first mill 20 and the second mill 70 are the main grinding structures of this application. The first mill 20 and the second mill 70 and the two grinding processes are conducive to forming concentrate particles of the target size, reducing the energy consumption of the grinding process and achieving the effect of energy saving.

[0040] In this embodiment, the overflow port of the hydrocyclone 30 is connected to the first slurry conditioner 40 to provide granular material of the target size. The material flowing out of the overflow port enters the interior of the first slurry conditioner 40. Specific additives are added to the interior of the first slurry conditioner 40, which is a high-speed shear slurry conditioner. The high-speed rotation of the first slurry conditioner 40 agitates and flocculates the granular material and additives, and then it enters the first flotation machine 50 for flotation to generate concentrate. The concentrate enters the first thickener 60 for concentration, and after concentration, it enters the second tower mill 70 for regrinding. After grinding, it enters the second slurry conditioner 80 for secondary flocculation, and after flocculation, it enters the second flotation machine 90 for secondary flotation to generate high-grade concentrate.

[0041] The preferred shearing speed of the first slurry conditioner 40 is 2200 r / min to 3000 r / min.

[0042] In this embodiment, multiple first slurry conditioners 40 are provided and connected in series along the material transport direction. The first slurry conditioner 40 located at the first end of the multiple first slurry conditioners 40 is connected to the overflow port for material inflow. The first slurry conditioner 40 located at the second end of the multiple first slurry conditioners 40 is connected to the first flotation machine 50 for material discharge. The material flowing out of the overflow port of the hydrocyclone 30 flows sequentially through the multiple first slurry conditioners 40 to the first flotation machine 50. In this application, each of the multiple first slurry conditioners 40 has an additive port for adding specific additives.

[0043] It should be noted that the first end of the multiple first pulp conditioners 40 is the head end, and the second end of the multiple first pulp conditioners 40 is the tail end. That is, when there are N first pulp conditioners 40, the overflow port of the hydrocyclone 30 is connected to the first first pulp conditioner 40 located at the first end, and the Nth first pulp conditioner 40 located at the second end is connected to the first flotation machine 50.

[0044] The specific additives are sodium hexamethylene phosphate, carboxymethyl cellulose, water glass, and diesel oil. Sodium hexamethylene phosphate, carboxymethyl cellulose, and water glass effectively suppress gangue minerals. The addition of diesel oil as an agglomerating agent can form graphite concentrate flocs during the shear flocculation process. After being floated by a flotation machine, the graphite concentrate flocs are converted into concentrate and tailings.

[0045] The first slurry conditioner 40 of this application is provided with three, and the material flows through the three first slurry conditioners 40 in sequence for processing. Carboxymethyl cellulose, sodium hexametaphosphate and water glass are added to the three first slurry conditioners 40, and the dosages are 2000g / t, 2000g / t and 1000g / t, respectively. Diesel oil is added to the second and third first slurry conditioners 40, and the dosages are 1000g / t and 800g / t, respectively.

[0046] like Figure 1As shown, multiple first flotation machines 50 are provided and connected in series. The first slurry conditioner 40 is connected to the first first flotation machine 50. In two adjacent first flotation machines 50, the concentrate discharge end of the upstream first flotation machine 50 is connected to the inlet of the downstream first flotation machine 50.

[0047] Among the multiple first flotation machines 50 arranged in series, the downstream first flotation machine 50 is used to further screen the concentrate generated by the upstream first flotation machine 50 to obtain a high-grade concentrate.

[0048] In this embodiment, a plurality of first flotation machines 50 form an upstream first number of first flotation machines 50 and a downstream second number of first flotation machines 50. The graphite beneficiation equipment also includes a tailings collection device. The tailings discharge end of the first number of first flotation machines 50 is connected to the tailings collection device, and the tailings discharge end of the second number of first flotation machines 50 is connected to the tailings processing mechanism 100.

[0049] The first quantity is a positive integer greater than or equal to 1, and the second quantity is a positive integer greater than or equal to 1.

[0050] Specifically, in this embodiment, the first quantity is 1, the second quantity is 3, and a total of 4 first flotation machines 50 are provided.

[0051] In this embodiment, the concentrate from multiple first flotation machines 50 enters a first thickener 60 for concentration. The concentrated concentrate then enters a second tower mill 70 for secondary grinding to further refine the concentrate. After grinding, it enters a second slurry conditioner 80 for secondary flocculation. Multiple second slurry conditioners 80 are arranged in series along the material transport direction. The second tower mill 70 is connected to the second slurry conditioner 80 located at the first end of the multiple second slurry conditioners 80, i.e., the first of the multiple second slurry conditioners 80 arranged in series. The second slurry conditioner 80 located at the second end of the multiple second slurry conditioners 80 is connected to the second flotation machine 90, i.e., the last of the multiple second slurry conditioners 80 arranged in series. The material flowing out of the second tower mill 70 flows sequentially through the multiple second slurry conditioners 80 to the second flotation machine 90. Each of the multiple second slurry conditioners 80 in this application has an additive port for adding specific additives.

[0052] It should be noted that the first end of the multiple second mixing machines 80 is the head end, and the second end of the multiple second mixing machines 80 is the tail end. That is, when there are N second mixing machines 80, the first second mixing machine 80 is located at the first end of the multiple second mixing machines 80, and the last one, i.e. the Nth second mixing machine 80, is located at the second end of the multiple second mixing machines 80.

[0053] The specific additives are sodium hexamethylene phosphate, carboxymethyl cellulose, water glass, and diesel oil. Sodium hexamethylene phosphate, carboxymethyl cellulose, and water glass effectively suppress gangue minerals. The addition of diesel oil as an agglomerating agent can form graphite concentrate flocs during the shear flocculation process. After being floated by a flotation machine, the graphite concentrate flocs are converted into concentrate and tailings.

[0054] This application has three second slurry conditioners 80. The material flows through the three second slurry conditioners 80 in sequence for processing. Carboxymethyl cellulose, sodium hexametaphosphate and water glass are added to the three second slurry conditioners 80, and the dosages are 2000g / t, 2000g / t and 1000g / t, respectively. Diesel oil is added to the second and third second slurry conditioners 80, and the dosages are 1000g / t and 800g / t, respectively.

[0055] like Figure 1 As shown, multiple second flotation machines 90 are arranged in series. The second flotation machine 90 located at the first end of the multiple second flotation machines 90 is connected to the second slurry conditioner 80. In two adjacent second flotation machines 90, along the material transport direction, the concentrate discharge end of the upstream second flotation machine 90 is connected to the inlet of the downstream second flotation machine 90. The tailings discharge end of each second flotation machine 90 is connected to the tailings treatment mechanism 100 for tailings treatment to achieve the recycling of tailings.

[0056] Among the multiple second flotation machines 90 arranged in series, the downstream second flotation machine 90 is used to further screen the concentrate generated by the upstream second flotation machine 90 to obtain a high-grade concentrate with a carbon content of over 94%.

[0057] In this embodiment, the graphite beneficiation equipment also includes a concentrate collection device. The concentrate discharge end of the second flotation machine 90 located at the second end of the plurality of second flotation machines 90 is connected to the concentrate collection device to achieve the collection of high-grade concentrate. The concentrate collection device can be a collection box with an internal cavity. It should be noted that the first end of the plurality of second flotation machines 90 is the head end, that is, the second flotation machine 90 located at the first end is the first second flotation machine 90; the second end of the plurality of second flotation machines 90 is the tail end, that is, the second flotation machine 90 located at the second end is the last second flotation machine 90.

[0058] like Figure 1As shown, the tailings treatment unit 100 includes a second thickener 1010, a third tower mill 1020, and a third flotation machine 1030 arranged in sequence. The tailings discharge end of the flotation unit is connected to the second thickener 1010. The third flotation machine 1030 has a tailings discharge end and a concentrate discharge end. The concentrate discharge end of the third flotation machine 1030 is a return port, which is used to provide the concentrate discharged from the concentrate discharge end of the third flotation machine 1030 to the hydrocyclone 30. The tailings discharge end of the third flotation machine 1030 is connected to a tailings collection device for discharging tailings.

[0059] The tailings treatment device 100 of this application realizes the reprocessing of tailings and realizes the return of the processed tailings to the hydrocyclone 30 for further processing, effectively recovering valuable graphite components, forming a reuse structure, reducing resource waste in tailings discharge, and improving the stability and efficiency of the entire system.

[0060] In this application, the tailings discharge ends of the first flotation machine 50 and the third flotation machine 1030 located upstream are connected to the tailings collection device to output the material discharged from the entire device. The tailings collection device can be a collection box with an inner cavity.

[0061] In this embodiment, the tailings discharge ends of the second number of first flotation machines 50 and the plurality of second flotation machines 90 located downstream of the first number of first flotation machines 50 are connected to the tailings processing mechanism 100, which is used to process the tailings into concentrate that can be recycled to the hydrocyclone 30 and tailings that need to be discharged to the tailings collection device.

[0062] Specifically, the tailings enter the second thickener 1010 for thickening, and after thickening, they enter the third tower mill 1020 for grinding and refining. Then, they are floated by the third flotation machine 1030 to generate the corresponding concentrate that can be recycled to the hydrocyclone 30 and the tailings that need to be discharged to the tailings collection device.

[0063] In this embodiment, the tailings treatment mechanism 100 further includes a drying structure for drying. The drying structure is located at the concentrate output end of the second flotation machine 90 located at the second end of the plurality of second flotation machines 90 in the flotation unit, and performs drying treatment on the concentrate that needs to be transferred to the hydrocyclone 30. The drying structure can be a heating fan or a heating furnace, or other structures that can be used to heat the concentrate.

[0064] In this embodiment, the graphite beneficiation equipment also includes a concentrate carbon content testing mechanism, which comprises a muffle furnace, several magnetic boats, several ceramic crucibles, an analytical balance, and several covered glass dishes. Specifically, the testing preparation includes a muffle furnace with a maximum temperature exceeding 1000℃, several magnetic boats, several ceramic crucibles, an analytical balance, and several covered glass dishes. 0.5g of mixed graphite concentrate is weighed into a magnetic boat using the analytical balance. The muffle furnace is heated to above 950℃, and the magnetic boat is placed in the muffle furnace and ignited for 1 hour. After cooling to room temperature, the mass of the ignited concentrate is weighed, and the ash content (A) is calculated. 1g of mixed concentrate is weighed into a ceramic crucible using the analytical balance. The muffle furnace is heated to above 950℃, and the ceramic crucible is placed in the muffle furnace and ignited for 8 minutes. After cooling to room temperature, the mass of the ignited concentrate is weighed, and the volatile matter (B) is calculated. Weigh 10g of mixed concentrate into a glass dish, dry it in a forced-air drying oven at 150℃ for half an hour, remove it and cover it with the glass dish lid, weigh it on an analytical balance, calculate the moisture C, and then fix the carbon grade as 100-ABC.

[0065] In this embodiment, the usage process of the graphite beneficiation equipment of this application is as follows:

[0066] Raw ore material smaller than 300mm is fed into the high-efficiency crushing mechanism 10 by a loader. The crushing mechanism 10 crushes the ore smaller than 300mm into ore smaller than 1mm, of which -100 mesh accounts for about 50%.

[0067] The crushed products obtained above are transported to the first tower mill 20 via belt conveyor. The concentration of the material is controlled by water pipes and sensors to ensure it is between 50% and 60%. After processing in the first tower mill 20, the material is classified by a φ150mm hydrocyclone 30. Unqualified material enters the first tower mill 20 for regrinding through the low flow port, forming a closed-loop grinding cycle. Qualified material is produced from the overflow port of the hydrocyclone 30.

[0068] The qualified material enters the first slurry conditioner 40 for mixing and flocculation with specific additives. After flocculation, it enters the first flotation machine 50 for preliminary flotation. After preliminary flotation, it enters the first thickener 60 for concentration. After concentration, it passes through the second tower mill 70 for grinding and refining treatment and then enters the second slurry conditioner 80 for secondary flocculation. After secondary flocculation, it enters the second flotation machine 90 for secondary flotation and finally produces high-purity graphite concentrate with a carbon content of 94%.

[0069] The tailings can be processed by the tailings treatment unit 100 and then returned to the hydrocyclone 30 for recycling.

[0070] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0071] The graphite beneficiation equipment of this application uses a crushing mechanism 10, a first tower mill 20, a hydrocyclone 30, and a flotation mechanism arranged in sequence to generate corresponding concentrates and tailings from the raw ore, which significantly improves the beneficiation efficiency and concentrate quality of fine-grained, difficult-to-benefit graphite. The structural design of this application, through the cooperation of the crushing mechanism 10 and the first tower mill 20, effectively reduces grinding energy consumption, shortens the number of grinding stages, and achieves full liberation of graphite from gangue minerals. After the material is screened by the hydrocyclone 30, the granular material of the target size is processed by the slurry conditioning unit and the flotation unit to generate high-grade concentrate. The application of slurry conditioning and flotation processes significantly improves the fixed carbon content of the final concentrate and increases the concentrate generation efficiency.

[0072] This application also includes a tailings treatment facility 100 to reprocess the tailings and return the treated tailings to the hydrocyclone 30 for further processing. This effectively recovers valuable graphite components, forming a reuse structure that reduces resource waste in tailings discharge and improves the stability and efficiency of the entire system.

[0073] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0074] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0075] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0076] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A graphite beneficiation equipment, characterized in that, include: Crushing mechanism (10) is used to crush raw ore materials; The first tower mill (20) has its output end connected to the feed inlet of the crushing mechanism (10); The hydrocyclone (30) is connected to the outlet of the first tower mill (20) and the inlet of the hydrocyclone (30). The hydrocyclone (30) has an underflow port and an overflow port. The underflow port is connected to the first tower mill (20) for material reflux. The flotation mechanism includes a slurry conditioning unit and a flotation unit connected in series. The flotation unit has a concentrate discharge end and a tailings discharge end. The material flowing out of the overflow port flows through the slurry conditioning unit and the flotation unit to form corresponding concentrate and tailings. The tailings treatment mechanism (100) is connected to the tailings discharge end. The tailings treatment mechanism (100) has a return port, which is connected to the inlet of the hydrocyclone (30).

2. The graphite beneficiation equipment according to claim 1, characterized in that, The flotation mechanism also includes a first thickener (60) and a second tower mill (70) connected in sequence: The pulp conditioning unit includes a first pulp conditioning machine (40) located upstream of the first thickener (60) and a second pulp conditioning machine (80) located downstream of the second tower mill (70); The flotation unit includes a first flotation machine (50) and a second flotation machine (90). The first flotation machine (50) is located between the first slurry conditioner (40) and the first thickener (60). The concentrate discharge end of the first slurry conditioner (40) is connected to the first thickener (60). A portion of the tailings discharge end of the first flotation machine (50) is connected to the tailings treatment mechanism (100). The second flotation machine (90) is located downstream of the second slurry conditioner (80). The tailings discharge end of the second flotation machine (90) is connected to the tailings treatment mechanism (100).

3. The graphite beneficiation equipment according to claim 2, characterized in that, Multiple first slurry conditioners (40) are provided and connected in series. The first slurry conditioner (40) located at the first end of the multiple first slurry conditioners (40) is connected to the overflow port for material inflow. The first slurry conditioner (40) located at the second end of the multiple first slurry conditioners (40) is connected to the first flotation machine (50) for material discharge. The material flowing out of the overflow port of the hydrocyclone (30) flows sequentially through the multiple first slurry conditioners (40) to the first flotation machine (50). Each of the multiple first slurry conditioners (40) has an additive port. Multiple second slurry conditioners (80) are provided and connected in series. The second slurry conditioner (80) located at the first end of the multiple second slurry conditioners (80) is connected to the second tower mill (70). The second slurry conditioner (80) located at the second end of the multiple second slurry conditioners (80) is connected to the second flotation machine (90). The material flowing out of the second tower mill (70) flows through the multiple second slurry conditioners (80) in sequence to the second flotation machine (90). Each of the multiple second slurry conditioners (80) has an additive port.

4. The graphite beneficiation equipment according to claim 2, characterized in that, Multiple first flotation machines (50) are provided and connected in series. The first slurry conditioner (40) is connected to the first first flotation machine (50). In two adjacent first flotation machines (50), the concentrate discharge end of the upstream first flotation machine (50) is connected to the inlet of the downstream first flotation machine (50).

5. The graphite beneficiation equipment according to claim 4, characterized in that, Multiple first flotation machines (50) form an upstream first number of first flotation machines (50) and a downstream second number of first flotation machines (50). The graphite beneficiation equipment also includes a tailings collection device. The tailings discharge end of the first number of first flotation machines (50) is connected to the tailings collection device, and the tailings discharge end of the second number of first flotation machines (50) is connected to the tailings treatment mechanism (100).

6. The graphite beneficiation equipment according to claim 3, characterized in that... Multiple second flotation machines (90) are provided and connected in series. The second flotation machine (90) located at the first end of the multiple second flotation machines (90) is connected to the second slurry conditioner (80). In two adjacent second flotation machines (90), the concentrate discharge end of the upstream second flotation machine (90) is connected to the inlet of the downstream second flotation machine (90). The tailings discharge end of each second flotation machine (90) is connected to the tailings treatment mechanism (100). The graphite beneficiation equipment also includes a concentrate collection device, wherein the concentrate discharge end of the second flotation machine (90) located at the second end of the plurality of second flotation machines (90) is connected to the concentrate collection device.

7. The graphite beneficiation equipment according to any one of claims 1 to 6, characterized in that, The tailings processing facility (100) includes: The second thickener (1010), the third tower mill (1020), and the third flotation machine (1030) are connected in sequence. The tailings discharge end of the flotation machine unit is connected to the second thickener (1010). The third flotation machine (1030) has a tailings discharge end and a concentrate discharge end. The concentrate discharge end of the third flotation machine (1030) is the return port. The graphite beneficiation equipment also includes a tailings collection device, and the tailings discharge end of the third flotation machine (1030) is connected to the tailings collection device.

8. The graphite beneficiation equipment according to any one of claims 1 to 6, characterized in that, The crushing mechanism (10) includes a jaw crusher (110), a cyclone pulverizer (120) and a dust collector (130) arranged in sequence. The raw material passes through the jaw crusher (110) and the cyclone pulverizer (120) in sequence to form granular materials of different sizes. The granular materials of different sizes are sorted after passing through the dust collector (130).

9. The graphite beneficiation equipment according to claim 8, characterized in that, The graphite beneficiation equipment also includes: A storage bin is provided at the discharge port of the dust collector (130) and is connected to the discharge port; The transport component is located below the storage bin of the crushing mechanism (10) for material transfer. The output end of the transport component is opposite to and connected to the inlet end of the first tower mill (20).

10. The graphite beneficiation equipment according to any one of claims 1 to 6, characterized in that, The graphite beneficiation equipment also includes: A water pipe, which is connected to the first tower mill (20), is used to supply water; A sensor is installed in the first tower mill (20) for concentration detection; A drying structure is provided at the concentrate output end of the second flotation machine (90) of the flotation unit for drying.

Images