Processing method and system of spodumene

Abstract

The invention discloses a spodumene processing method and system, and the method comprises the steps: 1) crushing spodumene raw ore to obtain ore; (2) the crushed ore is screened through a linear screen and roughed through a blanket, and first ore fraction and second ore fraction are obtained; (3) the first ore is subjected to shaking table concentration operation, and third ore and tantalum-niobium concentrate are obtained; 4) performing blanket scavenging operation on the second mineral fraction to obtain a fourth mineral fraction and a fifth mineral fraction; (5) the third mineral component and the fifth mineral component are combined and subjected to cyclone desliming operation, and a sixth mineral component and a seventh mineral component are obtained; (6) the sixth ore component is subjected to strong magnetic roughing operation, and an eighth ore component and a ninth ore component are obtained; 7) carrying out blanket machine operation on the eighth mineral component to obtain a tenth mineral component and magnetic tailings; 8) performing spodumene rough flotation operation on the seventh ore fraction to obtain an eleventh ore fraction and a twelfth ore fraction; (9) spodumene scavenging operation is conducted on the eleventh ore fraction, and a thirteenth ore fraction and a fourteenth ore fraction are obtained; (10) the ninth ore component is subjected to strong magnetic concentration operation, and a fifteenth ore component and feldspar concentrate are obtained; and (11) spodumene concentration operation is conducted on the twelfth ore fraction, and sixteenth ore fraction and spodumene concentrate are obtained. According to the method, the spodumene concentrate yield is high, byproducts generated in the machining process can be comprehensively utilized, and zero emission is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of spodumene, and in particular to a spodumene processing method and system. Background Art

[0002] With the rapid development of emerging technology industries, lithium is widely used in many emerging industries and fields such as high-energy batteries, energy storage, aerospace, controlled nuclear reactions, etc. due to its excellent performance. It enjoys the reputation of "industrial MSG", "aerospace alloy", "white oil" and "the metal with the most application potential in the 21st century". my country's lithium resource reserves are 8.1 million tons (calculated in terms of lithium carbonate equivalent), accounting for 6.3% of the world's total resources. At the same time, my country is the world's largest consumer of lithium carbonate and producer of lithium batteries. In 2022, the global demand for lithium carbonate will be 622,000 tons, of which my country's consumption demand will be 505,000 tons, accounting for 81%. At present, my country has become the world's largest consumer and trading country of lithium resources. The poor endowment of domestic lithium resources, imperfect market structure and financial system, and the need for breakthroughs in lithium extraction technology have led to the low level of development and utilization of domestic lithium resources in my country, insufficient supply, and external dependence as high as 67%. Therefore, it is of great significance to ensure the safe and stable supply of lithium resources.

[0003] As lithium resources are scarce in my country, and the new energy industry, mainly energy storage and power batteries, is becoming my country's emerging advantageous industry and taking an absolute leading position in the world, as a key mineral resource in the new energy industry, the utilization of spodumene in the existing technology is still imperfect. The traditional processing method of spodumene is: crushing, grinding, grading, flotation and concentration and drying. The processing process is relatively simple and the yield rate is low. The traditional flotation soluble alkali addition amount is 500-1000g per ton of ore, and the collector addition amount is 550-800g per ton of ore, which is a large amount.

[0004] Prior art 1 is patent CN 116510886 A "A method for processing spodumene", which discloses that the spodumene processing method is crushing, grinding, grading, flotation and concentration and drying, specifically including:

[0005] Step 1: Crushing: The mined spodumene is first crushed into blocks on site by a crushing device, and then these blocks of spodumene are transported to the inside of the crusher through a transmission device and processed into small blocks of 5-10 cm;

[0006] Step 2: Grinding, transporting the stones to the inside of the ball mill, grinding for 50-70 minutes, grinding into spodumene powder, until the particle size of the powder is maintained at 0.1-0.14mm, then stop processing and pour out the spodumene powder;

[0007] Step 3: Classification: Pour the ground spodumene powder into the interior of the classification device, and fill the interior of the classification device with water, the volume of which is 2-3 times that of the spodumene powder, and wash and classify the spodumene solid particles by taking advantage of the different specific gravities and different precipitation speeds in the liquid;

[0008] Step 4: flotation, pour the product obtained in step 3 into the interior of the flotation agent, pour sulfuric acid into the interior of the flotation agent, use a stirring device to continuously mix and stir for 8-10 minutes, stir and blend it, then continue to add spodumene collector and spodumene adjuster, inhibitor, frother, continue to stir and mix, and fully react for 40-50 minutes to obtain a spodumene concentrate semi-finished product;

[0009] Step 5: Concentration and drying, pouring the obtained spodumene concentrate semi-finished product into a concentrator for concentration. After the concentration is completed, pouring it into the interior of a drying device, adjusting the temperature of the drying device to be controlled at 80-100 degrees Celsius, and continuously drying the spodumene concentrate semi-finished product for 2-3 hours, and continuing to dry for 1-2 hours after drying to obtain a spodumene concentrate product.

[0010] The processing process of the prior art 1 is relatively simple, the route is single, the yield rate is low, and there is no quantitative requirement for the amount of reagents added, and there is no further comprehensive utilization of the tailings in the spodumene processing process. Therefore, how to expand the source of lithium ore resources and carry out deep processing to improve the utilization rate of spodumene has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0011] The technical problem to be solved by the present invention is to provide a spodumene processing method and system, which not only has a high spodumene concentrate yield rate, but also can comprehensively utilize the by-products generated during the processing to achieve zero emission.

[0012] In order to solve the above technical problems, the first aspect of the present invention provides a method for processing spodumene, comprising:

[0013] 1) crushing the spodumene ore to obtain ore;

[0014] 2) Screening the crushed ore through a linear screen and roughing with a felt to obtain a first ore fraction and a second ore fraction;

[0015] 3) The first ore fraction is subjected to a shaking table concentration operation to obtain a third ore fraction and tantalum-niobium concentrate;

[0016] 4) Carry out blanket sweeping on the second mineral fraction to obtain a fourth mineral fraction and a fifth mineral fraction;

[0017] 5) The third ore fraction and the fifth ore fraction are combined to perform a cyclone desludging operation to obtain a sixth ore fraction and a seventh ore fraction;

[0018] 6) subjecting the sixth mineral fraction to a strong magnetic roughing operation to obtain an eighth mineral fraction and a ninth mineral fraction;

[0019] 7) The eighth ore fraction is subjected to a felt machine operation to obtain a tenth ore fraction and magnetic tailings;

[0020] 8) performing a spodumene rough floatation operation on the seventh ore fraction to obtain an eleventh ore fraction and a twelfth ore fraction;

[0021] 9) performing spodumene sweeping operation on the eleventh mineral fraction to obtain the thirteenth mineral fraction and the fourteenth mineral fraction;

[0022] 10) subjecting the ninth mineral fraction to a strong magnetic concentration operation to obtain the fifteenth mineral fraction and feldspar concentrate;

[0023] 11) The twelfth mineral fraction is subjected to spodumene concentration operation to obtain the sixteenth mineral fraction and spodumene concentrate.

[0024] As an improvement of the above solution, step 2) includes:

[0025] The crushed ore is screened through a linear screen to obtain undersize Ⅰ and oversize Ⅰ;

[0026] The Ⅰ on the sieve is subjected to a wet ball mill grinding operation and then returned to the previous operation;

[0027] The undersize I is subjected to high-frequency screening to obtain undersize II and oversize II, and oversize II is returned to the previous operation;

[0028] The undersize II is subjected to a blanket roughing operation to obtain a first mineral fraction and a second mineral fraction.

[0029] As an improvement of the above scheme, the mesh number of the linear sieve is 20-80 mesh;

[0030] The wet ball mill is a continuous ball mill;

[0031] The high-frequency sieve has a vibration frequency of more than 24 Hz, an amplitude of 1.0-2.5 mm, and a mesh size of 50-200 meshes;

[0032] The felt roughing operation is performed by a felt machine.

[0033] As an improvement of the above solution, the feed particle size of the felt machine is 100-800 meshes.

[0034] As an improvement of the above scheme, in step 7), the eighth mineral fraction is subjected to a felt machine operation to obtain a tenth mineral fraction and magnetic tailings, and the tenth mineral fraction is returned to the shaking table concentration operation in step 3);

[0035] In step 9), the eleventh ore fraction is subjected to a spodumene sweeping operation to obtain a thirteenth ore fraction and a fourteenth ore fraction, the thirteenth ore fraction is returned to the strong magnetic roughing operation of step 6), and the fourteenth ore fraction is returned to the spodumene rough flotation operation of step 8);

[0036] In step 10), the ninth mineral fraction is subjected to a strong magnetic concentration operation to obtain the fifteenth mineral fraction and feldspar concentrate, and the fifteenth mineral fraction is returned to the blanket machine operation in step 7);

[0037] In step 11), the twelfth mineral fraction is subjected to spodumene concentration operation to obtain the sixteenth mineral fraction and spodumene concentrate, and the sixteenth mineral fraction is returned to the spodumene rough flotation operation of step 8).

[0038] As an improvement of the above scheme, the strong magnetic roughing and strong magnetic cleaning operations are performed by using a magnetic separator, and the magnetic separator is one or a combination of an electromagnetic strong magnetic separator, a drum-type mid-field strong magnetic separator, and a high-gradient vertical ring electromagnetic separator;

[0039] The drum-type medium-field high-intensity magnetic separator has a capacity of 0.6-1.2T.

[0040] As an improvement of the above scheme, a flotation agent is added to the spodumene rough flotation operation, and the flotation agent is a combination of a soluble alkali and a collector, wherein the soluble alkali is one or more of sodium hydroxide, potassium hydroxide, and calcium hydroxide, and the collector is one or more of oleic acid and sodium oleate.

[0041] As an improvement of the above scheme, the amount of the soluble alkali added is 300-600g per ton of ore;

[0042] The added amount of the collector is 400-700g per ton of ore.

[0043] Accordingly, the present invention discloses a spodumene processing system, comprising:

[0044] A crushing unit for crushing spodumene ore to obtain ore;

[0045] A first separation unit connected to the crushing unit, used for screening the crushed ore through a linear screen and roughing with a felt to obtain a first mineral fraction and a second mineral fraction;

[0046] A second separation unit connected to the first separation unit, used for performing a shaking table concentration operation on the first mineral fraction to obtain a third mineral fraction and tantalum-niobium concentrate;

[0047] A third separation unit connected to the first separation unit, used for performing a blanket sweeping operation on the second mineral fraction to obtain a fourth mineral fraction and a fifth mineral fraction;

[0048] A fourth separation unit connected to the second separation unit and the third separation unit, used to combine the third mineral fraction and the fifth mineral fraction for cyclone desludging to obtain a sixth mineral fraction and a seventh mineral fraction;

[0049] A fifth separation unit connected to the fourth separation unit for performing a strong magnetic roughing operation on the sixth mineral fraction to obtain an eighth mineral fraction and a ninth mineral fraction;

[0050] A sixth separation unit connected to the fifth separation unit for performing a felt machine operation on the eighth mineral fraction to obtain a tenth mineral fraction and magnetic tailings;

[0051] A seventh separation unit connected to the fourth separation unit, used for performing a spodumene rough floatation operation on the seventh mineral fraction to obtain an eleventh mineral fraction and a twelfth mineral fraction;

[0052] An eighth separation unit connected to the seventh separation unit, used for performing spodumene sweeping operation on the eleventh mineral fraction to obtain the thirteenth mineral fraction and the fourteenth mineral fraction;

[0053] A ninth separation unit connected to the fifth separation unit, used for performing a strong magnetic concentration operation on the ninth mineral fraction to obtain the fifteenth mineral fraction and feldspar concentrate;

[0054] The tenth separation unit is connected to the seventh separation unit and is used to carry out spodumene beneficiation operation on the twelfth mineral fraction to obtain the sixteenth mineral fraction and the spodumene concentrate.

[0055] As an improvement of the above solution, the sixth separation unit is connected to the second separation unit, and is used to return the tenth mineral fraction to the second separation unit for shaking table concentration operation;

[0056] The eighth separation unit is connected to the fifth separation unit and the seventh separation unit, and is used to return the thirteenth mineral fraction to the fifth separation unit for strong magnetic rough separation, and return the fourteenth mineral fraction to the seventh separation unit for spodumene rough flotation;

[0057] The ninth separation unit is connected to the sixth separation unit and is used to return the fifteenth mineral fraction to the sixth separation unit for felt machine operation;

[0058] The tenth separation unit is connected to the seventh separation unit and is used to return the sixteenth mineral fraction to the seventh separation unit for rough flotation of spodumene.

[0059] The implementation of the present invention has the following beneficial effects:

[0060] The present invention uses multi-step classification and mineral processing, not only has a high yield rate of spodumene concentrate, but also can make comprehensive use of by-products produced during the processing, has certain economic value, and achieves zero emission. Tantalum-niobium concentrate, magnetic tailings and feldspar concentrate are obtained during the processing of spodumene, wherein the tantalum-niobium concentrate can be used for heavy metal extraction, the magnetic tailings can be used for extraction in the steel industry, and the feldspar concentrate can be used in the building sanitary ceramics industry, with a high degree of comprehensive utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 : A flow chart of an embodiment of a method for processing spodumene of the present invention.

[0062] Figure 2 : A flow chart of another embodiment of the method for processing spodumene of the present invention.

[0063] Figure 3 : A schematic diagram of a processing system for spodumene of the present invention. DETAILED DESCRIPTION

[0064] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail with specific embodiments below.

[0065] To solve the above problems, Figure 1 As shown, the present invention provides a preferred embodiment of a method for processing spodumene, comprising:

[0066] S101, crushing the spodumene ore to obtain ore;

[0067] Preferably, in step S101, the spodumene ore is crushed, and the equipment used can be a jaw crusher, an impact crusher and a cone crusher, but is not limited thereto.

[0068] S102, screening the crushed ore through a linear screen and rough separation with a felt to obtain a first ore fraction and a second ore fraction;

[0069] The rough selection of the felt is to obtain the first mineral fraction and the second mineral fraction according to different specific gravities. Preferably, the specific gravity of the first mineral fraction is greater than 4.0, and the specific gravity of the second mineral fraction is less than or equal to 4.0.

[0070] It should be noted that specific gravity is also called relative density. The specific gravity of a solid or liquid is the density of the substance (in a completely dense state) divided by the density of pure H2O at standard atmospheric pressure (999.972 kg / m 3 ) ratio. The specific gravity of a gas is the ratio of the density of the gas to the density of air at standard conditions. The specific gravity of a liquid or solid tells you whether it sinks or floats in another fluid.

[0071] The present invention realizes graded screening by screening mineral components with different specific gravities, thereby obtaining high-precision spodumene concentrate.

[0072] Preferably, step S102 includes:

[0073] The crushed ore is screened through a linear screen to obtain undersize Ⅰ and oversize Ⅰ;

[0074] The Ⅰ on the sieve is subjected to a wet ball mill grinding operation and then returned to the previous operation;

[0075] The undersize I is subjected to high-frequency screening to obtain undersize II and oversize II, and oversize II is returned to the previous operation;

[0076] The undersize II is subjected to a blanket roughing operation to obtain a first mineral fraction and a second mineral fraction.

[0077] More preferably, the mesh number of the linear screen is 20-80 meshes; the wet ball mill is a continuous ball mill; the vibration frequency of the high-frequency screen is above 24 Hz, the amplitude is 1.0-2.5 mm, and the mesh number of the screen is 50-200 meshes; the felt roughing operation is carried out by a felt machine. The feed particle size of the felt machine is 100-800 meshes.

[0078] S103, performing a shaking table concentration operation on the first ore fraction to obtain a third ore fraction and tantalum-niobium concentrate;

[0079] The shaking table selection is to classify the materials according to their own specific gravity, the tilt angle of the shaking table and the shaking frequency after the materials enter the shaking table. The present invention uses a shaking table device, and the belt pulley drives the crankshaft of the shaking table device to rotate the rocker through the belt transmission, and the rocker moves up and down accordingly. When the rocker moves downward, the mineral material enters through the ore trough on the inclined table with a rifling bar, and the shaking table water tank provides lateral impact water, so that while vibrating and flushing, the minerals with different specific gravity, particle size and density flow out from the concentrate port and tailing port of the shaking table in different directions, directly forming a high-quality concentrate, and effectively recovering tantalum and niobium concentrate.

[0080] The third mineral fraction is mainly feldspar and spodumene, containing a small amount of tantalum-niobium ore. Preferably, the tilt angle of the shaking table is 0-10°, and the shaking frequency is 210-320 times / min, so as to achieve the classification of the materials, the specific gravity of the tantalum-niobium concentrate is greater than 5.0, and the specific gravity of the third mineral fraction is less than or equal to 5.0.

[0081] Therefore, the shaking table concentration of the present invention carries out enrichment and concentration according to the different specific gravities of the mineral components, and the tantalum-niobium concentrate has the largest specific gravity. After the shaking table concentration, a high-purity tantalum-niobium concentrate can be obtained.

[0082] S104, performing a blanket sweeping operation on the second mineral fraction to obtain a fourth mineral fraction and a fifth mineral fraction;

[0083] Felt sweeping separation uses the vibration of the felt to achieve mineral separation. When the vibrating felt concentrator is started, the vibrator starts to work, and the felt vibrates periodically. Under the action of vibration, minerals of different densities will move at different speeds, thus achieving gravity separation.

[0084] The fourth mineral fraction and the fifth mineral fraction are distinguished by their specific gravity. The specific gravity of the fourth mineral fraction is greater than 3.8, and the specific gravity of the fifth mineral fraction is less than or equal to 3.8.

[0085] S105, combining the third ore fraction and the fifth ore fraction to perform a cyclone desludging operation to obtain a sixth ore fraction and a seventh ore fraction;

[0086] The desludging of the cyclone is that after the material enters the cyclone, due to the spiral recoil of water, the materials with different specific gravities are presented in different positions. The materials with smaller specific gravity flow out through the overflow port at the top, and the materials with larger specific gravity flow out from the bottom port.

[0087] Preferably, the cyclone operation is to sort according to different specific gravities. The specific gravity of the sixth mineral fraction is less than or equal to 3.6, and the specific gravity of the seventh mineral fraction is greater than 3.6. The sixth mineral fraction has a smaller specific gravity and flows out from the overflow port, while the seventh mineral fraction has a larger specific gravity and flows out from the bottom port.

[0088] S106, performing a strong magnetic roughing operation on the sixth mineral fraction to obtain an eighth mineral fraction and a ninth mineral fraction;

[0089] Preferably, the strong magnetic roughing operation and the strong magnetic cleaning operation are performed by a magnetic separator, and the magnetic separator is one or a combination of an electromagnetic strong magnetic separator, a drum-type mid-field strong magnetic separator, and a high-gradient vertical ring electromagnetic separator; more preferably, the drum-type mid-field strong magnetic separator is 0.6-1.2T.

[0090] The strong magnetic roughing separation is distinguished according to the different iron contents. The eighth ore fraction has a large iron content, while the ninth ore fraction has a small iron content. Preferably, the eighth ore fraction has an iron content greater than 2%, while the ninth ore fraction has an iron content less than or equal to 2%.

[0091] It should be noted that in the embodiment of the present invention, the equipment used for strong magnetic roughing and strong magnetic concentrating is different. The roughing uses a drum-type mid-field strong magnetic separator with a magnetic field strength of 3000-4000gs. The concentrating uses a high-strength vertical ring electromagnetic separator with a magnetic field strength of more than 4500gs.

[0092] S107, performing a felt machine operation on the eighth mineral fraction to obtain a tenth mineral fraction and magnetic tailings;

[0093] This step uses the vibration of the felt to achieve mineral separation. When the vibrating felt concentrator is started, the vibrator starts working and the felt vibrates periodically. Under the action of vibration, minerals of different densities move at different speeds, thereby achieving gravity separation. The tenth mineral fraction has a greater specific gravity than the magnetic separation tailings, and is separated according to different specific gravities.

[0094] S108, performing a spodumene rough floatation operation on the seventh mineral fraction to obtain an eleventh mineral fraction and a twelfth mineral fraction;

[0095] Preferably, a flotation agent is added during the spodumene rough flotation operation, and the flotation agent is a combination of a soluble alkali and a collector, wherein the soluble alkali is one or more of sodium hydroxide, potassium hydroxide, and calcium hydroxide, and the collector is one or more of oleic acid and sodium oleate.

[0096] Preferably, the amount of the soluble alkali added is 300-600 g per ton of mineral material; and the amount of the collector added is 400-700 g per ton of mineral material.

[0097] Compared with the traditional flotation method in which the amount of soluble alkali added is 500-1000g per ton of ore and the amount of collector added is 550-800g per ton of ore, the amount of soluble alkali added in the present invention is smaller, the amount of collector added is smaller, and the yield rate of spodumene concentrate can be improved after the combined process.

[0098] According to the different specific gravities, the one with a small specific gravity is the eleventh mineral component, and the one with a large specific gravity is the twelfth mineral component. Preferably, the specific gravity of the eleventh mineral component is less than or equal to 3.0, and the specific gravity of the twelfth mineral component is greater than 3.0.

[0099] S109, performing spodumene sweeping operation on the eleventh mineral fraction to obtain a thirteenth mineral fraction and a fourteenth mineral fraction;

[0100] The spodumene scavenging operation is the flotation process. After the rough flotation operation of the seventh ore fraction, the eleventh ore fraction still contains spodumene components. After several flotations according to the different contents, the spodumene contained is further extracted.

[0101] Preferably, a flotation agent is added during the spodumene scavenging operation of this step, and the flotation agent is a combination of a soluble alkali and a collector, wherein the soluble alkali is one or more of sodium hydroxide, potassium hydroxide, and calcium hydroxide, and the collector is one or more of oleic acid and sodium oleate.

[0102] Preferably, the amount of the soluble alkali added is 300-600 g per ton of mineral material; and the amount of the collector added is 400-700 g per ton of mineral material.

[0103] Compared with the traditional flotation method in which the amount of soluble alkali added is 500-1000g per ton of ore and the amount of collector added is 550-800g per ton of ore, the amount of soluble alkali added in the present invention is smaller, the amount of collector added is smaller, and the yield rate of spodumene concentrate can be improved after the combined process.

[0104] According to the different specific gravities, the thirteenth mineral fraction has a smaller specific gravity and the fourteenth mineral fraction has a larger specific gravity. Preferably, the thirteenth mineral fraction has a specific gravity of less than or equal to 2.8, and the fourteenth mineral fraction has a specific gravity of greater than 2.8.

[0105] S110, performing a strong magnetic concentration operation on the ninth mineral fraction to obtain a fifteenth mineral fraction and feldspar concentrate;

[0106] Preferably, the strong magnetic roughing operation and the strong magnetic cleaning operation are performed by a magnetic separator, and the magnetic separator is one or a combination of an electromagnetic strong magnetic separator, a drum-type mid-field strong magnetic separator, and a high-gradient vertical ring electromagnetic separator; more preferably, the drum-type mid-field strong magnetic separator is 0.6-1.2T.

[0107] Strong magnetic concentration can use magnetic separation raw materials to remove the maximum amount of iron-containing substances in the mineral. The iron content of feldspar concentration is very small. Preferably, the iron content of the fifteenth ore fraction is greater than 0.2%, and the iron content of the feldspar concentrate is less than or equal to 0.2%.

[0108] It should be noted that the equipment used for strong magnetic roughing and strong magnetic concentrating is different. The roughing uses a drum-type mid-field strong magnetic separator with a magnetic field strength of 3000-4000gs. The concentrating uses a high-strength vertical ring electromagnetic magnetic separator with a magnetic field strength of more than 4500gs.

[0109] S111, performing spodumene concentration operation on the twelfth mineral fraction to obtain the sixteenth mineral fraction and spodumene concentrate.

[0110] Spodumene concentration is a flotation process. The specific gravity of the sixteenth mineral fraction is different from that of the spodumene concentrate. The specific gravity of the spodumene concentrate is higher. After adding the flotation reagent, the sixteenth mineral fraction and the spodumene concentrate are in different positions in the liquid, and components with different specific gravities flow out from different positions. This allows for maximum extraction of spodumene.

[0111] Preferably, a flotation agent is added to the spodumene concentration operation in this step, and the flotation agent is a combination of a soluble alkali and a collector, wherein the soluble alkali is one or more of sodium hydroxide, potassium hydroxide, and calcium hydroxide, and the collector is one or more of oleic acid and sodium oleate.

[0112] Preferably, the amount of the soluble alkali added is 300-600 g per ton of mineral material; and the amount of the collector added is 400-700 g per ton of mineral material.

[0113] Compared with the traditional flotation method in which the amount of soluble alkali added is 500-1000g per ton of ore and the amount of collector added is 550-800g per ton of ore, the amount of soluble alkali added in the present invention is smaller, the amount of collector added is smaller, and the yield rate of spodumene concentrate can be improved after the combined process.

[0114] The present invention adopts multi-step graded mineral processing with simple process. Not only the yield rate of spodumene concentrate is high, but also the by-products produced in the processing process can be comprehensively utilized, including tantalum-niobium concentrate, magnetic tailings, feldspar concentrate, etc. Among them, tantalum-niobium concentrate can be used for heavy metal extraction, magnetic tailings can be used for extraction in the steel industry, and feldspar concentrate can be used in the building sanitary ceramics industry, with a high degree of comprehensive utilization.

[0115] like Figure 2 As shown, the present invention provides another preferred embodiment of a method for processing spodumene, comprising:

[0116] S201, crushing the spodumene ore to obtain ore;

[0117] Preferably, in step S201, the spodumene ore is crushed, and the equipment used can be a jaw crusher, an impact crusher and a cone crusher, but is not limited thereto.

[0118] S202, screening the crushed ore through a linear screen and rough separation with a felt to obtain a first ore fraction and a second ore fraction;

[0119] The rough selection of blankets is to obtain the first mineral fraction and the second mineral fraction according to the different specific gravities. The specific gravity of the first mineral fraction is greater than 4.0, and the specific gravity of the second mineral fraction is less than or equal to 4.0.

[0120] It should be noted that specific gravity is also called relative density. The specific gravity of a solid or liquid is the density of the substance (in a completely dense state) divided by the density of pure H2O at standard atmospheric pressure (999.972 kg / m 3 ) ratio. The specific gravity of a gas is the ratio of the density of the gas to the density of air at standard conditions. The specific gravity of a liquid or solid tells you whether it sinks or floats in another fluid.

[0121] The present invention realizes graded screening by screening mineral components with different specific gravities, thereby obtaining high-precision spodumene concentrate.

[0122] Preferably, step S202 includes:

[0123] The crushed ore is screened through a linear screen to obtain undersize Ⅰ and oversize Ⅰ;

[0124] The Ⅰ on the sieve is subjected to a wet ball mill grinding operation and then returned to the previous operation;

[0125] The undersize I is subjected to high-frequency screening to obtain undersize II and oversize II, and oversize II is returned to the previous operation;

[0126] The undersize II is subjected to a blanket roughing operation to obtain a first mineral fraction and a second mineral fraction.

[0127] More preferably, the mesh number of the linear screen is 20-80 meshes; the wet ball mill is a continuous ball mill; the vibration frequency of the high-frequency screen is above 24 Hz, the amplitude is 1.0-2.5 mm, and the mesh number of the screen is 50-200 meshes; the felt roughing operation is carried out by a felt machine. The feed particle size of the felt machine is 100-800 meshes.

[0128] S203, performing a shaking table concentration operation on the first ore fraction to obtain a third ore fraction and tantalum-niobium concentrate;

[0129] The shaking table selection is to classify the materials according to their own specific gravity, the tilt angle of the shaking table and the shaking frequency after the materials enter the shaking table. The present invention uses a shaking table device, and the belt pulley drives the crankshaft of the shaking table device to rotate the rocker through the belt transmission, and the rocker moves up and down accordingly. When the rocker moves downward, the mineral material enters through the ore trough on the inclined table with a rifling bar, and the shaking table water tank provides lateral impact water, so that while vibrating and flushing, the minerals with different specific gravity, particle size and density flow out from the concentrate port and tailing port of the shaking table in different directions, directly forming a high-quality concentrate, and effectively recovering tantalum and niobium concentrate.

[0130] The third mineral fraction is mainly feldspar and spodumene, containing a small amount of tantalum-niobium ore. Preferably, the tilt angle of the shaking table is 0-10°, and the shaking frequency is 210-320 times / min, so as to achieve the classification of the materials, the specific gravity of the tantalum-niobium concentrate is greater than 5.0, and the specific gravity of the third mineral fraction is less than or equal to 5.0.

[0131] Therefore, the shaking table concentration of the present invention carries out enrichment and concentration according to the different specific gravities of the mineral components, and the tantalum-niobium concentrate has the largest specific gravity. After the shaking table concentration, a high-purity tantalum-niobium concentrate can be obtained.

[0132] S204, performing a blanket sweeping operation on the second mineral fraction to obtain a fourth mineral fraction and a fifth mineral fraction;

[0133] Felt sweeping separation uses the vibration of the felt to achieve mineral separation. When the vibrating felt concentrator is started, the vibrator starts to work, and the felt vibrates periodically. Under the action of vibration, minerals of different densities will move at different speeds, thus achieving gravity separation.

[0134] The fourth mineral fraction and the fifth mineral fraction are distinguished by their specific gravity. The specific gravity of the fourth mineral fraction is greater than 3.8, and the specific gravity of the fifth mineral fraction is less than or equal to 3.8.

[0135] S205, combining the third ore fraction and the fifth ore fraction to perform a cyclone desludging operation to obtain a sixth ore fraction and a seventh ore fraction;

[0136] The desludging of the cyclone is that after the material enters the cyclone, due to the spiral recoil of water, the materials with different specific gravities are presented in different positions. The materials with smaller specific gravity flow out through the overflow port at the top, and the materials with larger specific gravity flow out from the bottom port.

[0137] Preferably, the cyclone operation is to sort according to different specific gravities. The specific gravity of the sixth mineral fraction is less than or equal to 3.6, and the specific gravity of the seventh mineral fraction is greater than 3.6. The sixth mineral fraction has a smaller specific gravity and flows out from the overflow port, while the seventh mineral fraction has a larger specific gravity and flows out from the bottom port.

[0138] S206, performing a strong magnetic roughing operation on the sixth mineral fraction to obtain an eighth mineral fraction and a ninth mineral fraction;

[0139] Preferably, the strong magnetic roughing operation and the strong magnetic cleaning operation are performed by a magnetic separator, and the magnetic separator is one or a combination of an electromagnetic strong magnetic separator, a drum-type mid-field strong magnetic separator, and a high-gradient vertical ring electromagnetic separator; more preferably, the drum-type mid-field strong magnetic separator is 0.6-1.2T.

[0140] The strong magnetic roughing separation is distinguished according to the different iron contents. The eighth ore fraction has a large iron content, while the ninth ore fraction has a small iron content. Preferably, the eighth ore fraction has an iron content greater than 2%, while the ninth ore fraction has an iron content less than or equal to 2%.

[0141] It should be noted that in the embodiment of the present invention, the equipment used for strong magnetic roughing and strong magnetic concentrating is different. The roughing uses a drum-type mid-field strong magnetic separator with a magnetic field strength of 3000-4000gs. The concentrating uses a high-strength vertical ring electromagnetic separator with a magnetic field strength of more than 4500gs.

[0142] S207, the eighth mineral fraction is subjected to a felt machine operation to obtain a tenth mineral fraction and magnetic tailings, and the tenth mineral fraction is returned to the shaking table concentration operation of step S203;

[0143] This step uses the vibration of the felt to achieve mineral separation. When the vibrating felt concentrator is started, the vibrator starts working and the felt vibrates periodically. Under the action of vibration, minerals of different densities move at different speeds, thereby achieving gravity separation. The tenth mineral fraction has a greater specific gravity than the magnetic separation tailings, and is separated according to different specific gravities.

[0144] In this embodiment, the tenth mineral fraction returns to the shaking table concentration operation of step S203.

[0145] S208, performing a spodumene rough floatation operation on the seventh mineral fraction to obtain an eleventh mineral fraction and a twelfth mineral fraction;

[0146] Preferably, a flotation agent is added during the spodumene rough flotation operation, and the flotation agent is a combination of a soluble alkali and a collector, wherein the soluble alkali is one or more of sodium hydroxide, potassium hydroxide, and calcium hydroxide, and the collector is one or more of oleic acid and sodium oleate.

[0147] Preferably, the amount of the soluble alkali added is 300-600 g per ton of mineral material; and the amount of the collector added is 400-700 g per ton of mineral material.

[0148] Compared with the traditional flotation method in which the amount of soluble alkali added is 500-1000g per ton of ore and the amount of collector added is 550-800g per ton of ore, the amount of soluble alkali added in the present invention is smaller, the amount of collector added is smaller, and the yield rate of spodumene concentrate can be improved after the combined process.

[0149] According to the different specific gravities, the one with a small specific gravity is the eleventh mineral component, and the one with a large specific gravity is the twelfth mineral component. Preferably, the specific gravity of the eleventh mineral component is less than or equal to 3.0, and the specific gravity of the twelfth mineral component is greater than 3.0.

[0150] S209, performing spodumene sweeping operation on the eleventh mineral fraction to obtain the thirteenth mineral fraction and the fourteenth mineral fraction, the thirteenth mineral fraction returns to the strong magnetic roughing operation of step S206, and the fourteenth mineral fraction returns to the spodumene rough flotation operation of step S208;

[0151] The spodumene scavenging operation is the flotation process. After the rough flotation operation of the seventh ore fraction, the eleventh ore fraction still contains spodumene components. After several flotations according to the different contents, the spodumene contained is further extracted.

[0152] Preferably, a flotation agent is added during the spodumene scavenging operation of this step, and the flotation agent is a combination of a soluble alkali and a collector, wherein the soluble alkali is one or more of sodium hydroxide, potassium hydroxide, and calcium hydroxide, and the collector is one or more of oleic acid and sodium oleate.

[0153] Preferably, the amount of the soluble alkali added is 300-600 g per ton of mineral material; and the amount of the collector added is 400-700 g per ton of mineral material.

[0154] Compared with the traditional flotation method in which the amount of soluble alkali added is 500-1000g per ton of ore and the amount of collector added is 550-800g per ton of ore, the amount of soluble alkali added in the present invention is smaller, the amount of collector added is smaller, and the yield rate of spodumene concentrate can be improved after the combined process.

[0155] According to the different specific gravities, the thirteenth mineral fraction has a smaller specific gravity and the fourteenth mineral fraction has a larger specific gravity. Preferably, the thirteenth mineral fraction has a specific gravity of less than or equal to 2.8, and the fourteenth mineral fraction has a specific gravity of greater than 2.8.

[0156] In this embodiment, the thirteenth mineral fraction returns to the strong magnetic roughing operation of step S206, and the fourteenth mineral fraction returns to the spodumene rough flotation operation of step S208.

[0157] S210, performing a strong magnetic concentration operation on the ninth mineral fraction to obtain a fifteenth mineral fraction and feldspar concentrate, and the fifteenth mineral fraction returns to the blanket machine operation of step S207;

[0158] Preferably, the strong magnetic roughing operation and the strong magnetic cleaning operation are performed by a magnetic separator, and the magnetic separator is one or a combination of an electromagnetic strong magnetic separator, a drum-type mid-field strong magnetic separator, and a high-gradient vertical ring electromagnetic separator; more preferably, the drum-type mid-field strong magnetic separator is 0.6-1.2T.

[0159] Strong magnetic concentration can use magnetic separation raw materials to remove the maximum amount of iron-containing substances in the mineral. The iron content of feldspar concentration is very small. Preferably, the iron content of the fifteenth ore fraction is greater than 0.2%, and the iron content of the feldspar concentrate is less than or equal to 0.2%.

[0160] It should be noted that the equipment used for strong magnetic roughing and strong magnetic concentrating is different. The roughing uses a drum-type mid-field strong magnetic separator with a magnetic field strength of 3000-4000gs. The concentrating uses a high-strength vertical ring electromagnetic magnetic separator with a magnetic field strength of more than 4500gs.

[0161] In this embodiment, the fifteenth mine returns to the felt machine operation of step S207.

[0162] S211, the twelfth mineral fraction is subjected to spodumene concentration operation to obtain the sixteenth mineral fraction and spodumene concentrate, and the sixteenth mineral fraction is returned to the spodumene rough flotation operation of step S208.

[0163] Spodumene concentration is a flotation process. The specific gravity of the sixteenth mineral fraction is different from that of the spodumene concentrate. The specific gravity of the spodumene concentrate is higher. After adding the flotation reagent, the sixteenth mineral fraction and the spodumene concentrate are in different positions in the liquid, and components with different specific gravities flow out from different positions. This allows for maximum extraction of spodumene.

[0164] Preferably, a flotation agent is added to the spodumene concentration operation in this step, and the flotation agent is a combination of a soluble alkali and a collector, wherein the soluble alkali is one or more of sodium hydroxide, potassium hydroxide, and calcium hydroxide, and the collector is one or more of oleic acid and sodium oleate.

[0165] Preferably, the amount of the soluble alkali added is 300-600 g per ton of mineral material; and the amount of the collector added is 400-700 g per ton of mineral material.

[0166] Compared with the traditional flotation method in which the amount of soluble alkali added is 500-1000g per ton of ore and the amount of collector added is 550-800g per ton of ore, the amount of soluble alkali added in the present invention is smaller, the amount of collector added is smaller, and the yield rate of spodumene concentrate can be improved after the combined process.

[0167] In this embodiment, the sixteenth mineral fraction returns to the spodumene rough flotation operation of step S208.

[0168] The present invention adopts multi-step graded mineral processing with simple process. Not only the yield rate of spodumene concentrate is high, but also the by-products produced in the processing process can be comprehensively utilized, including tantalum-niobium concentrate, magnetic tailings, feldspar concentrate, etc. Among them, tantalum-niobium concentrate can be used for heavy metal extraction, magnetic tailings can be used for extraction in the steel industry, and feldspar concentrate can be used in the building sanitary ceramics industry, with a high degree of comprehensive utilization.

[0169] Moreover, in this embodiment, the recycling process of the intermediate products of multiple steps is also defined, specifically including the tenth mineral fraction in step S207 returning to the shaking table concentration operation of step S203; the thirteenth mineral fraction in step S209 returning to the strong magnetic roughing operation of step S206, and the fourteenth mineral fraction returning to the spodumene rough flotation operation of step S208; the fifteenth mineral fraction in step S210 returning to the blanket machine operation of step S207; the sixteenth mineral fraction in step S211 returning to the spodumene rough flotation operation of step S208. Through the recycling operation, the spodumene concentrate yield can be further improved, and the tantalum-niobium concentrate, magnetic tailings, and feldspar concentrate can be further refined to increase the output of by-products.

[0170] Accordingly, the present invention discloses a spodumene processing system, comprising:

[0171] A crushing unit 1 for crushing spodumene ore to obtain ore;

[0172] A first separation unit 2 connected to the crushing unit 1 and used for screening the crushed ore through a linear screen and rough separation with a felt to obtain a first mineral fraction and a second mineral fraction;

[0173] A second separation unit 3 connected to the first separation unit 2 and used for performing a shaking table concentration operation on the first mineral fraction to obtain a third mineral fraction and tantalum-niobium concentrate;

[0174] A third separation unit 4 connected to the first separation unit 2 and used for performing a blanket sweeping operation on the second mineral fraction to obtain a fourth mineral fraction and a fifth mineral fraction;

[0175] A fourth separation unit 5 connected to the second separation unit 3 and the third separation unit 4, used to combine the third mineral fraction and the fifth mineral fraction for cyclone desludging to obtain the sixth mineral fraction and the seventh mineral fraction;

[0176] A fifth separation unit 6 connected to the fourth separation unit 5 for performing a strong magnetic roughing operation on the sixth mineral fraction to obtain an eighth mineral fraction and a ninth mineral fraction;

[0177] A sixth separation unit 7 connected to the fifth separation unit 6 for performing a felt machine operation on the eighth mineral fraction to obtain a tenth mineral fraction and magnetic tailings;

[0178] A seventh separation unit 8 connected to the fourth separation unit 5 for performing a spodumene rough floatation operation on the seventh mineral fraction to obtain an eleventh mineral fraction and a twelfth mineral fraction;

[0179] An eighth separation unit 9 connected to the seventh separation unit 8 for performing spodumene sweeping operation on the eleventh mineral fraction to obtain the thirteenth mineral fraction and the fourteenth mineral fraction;

[0180] A ninth separation unit 10 connected to the fifth separation unit 6 and used for performing a strong magnetic separation operation on the ninth mineral fraction to obtain the fifteenth mineral fraction and feldspar concentrate;

[0181] The tenth separation unit 11 is connected to the seventh separation unit 8 and is used for performing spodumene beneficiation operation on the twelfth mineral fraction to obtain the sixteenth mineral fraction and spodumene concentrate.

[0182] The present invention adopts multi-step graded ore dressing, the system is simple, the equipment used is simple, not only the spodumene concentrate yield is high, and the by-products produced in the processing process can be comprehensively utilized, including tantalum-niobium concentrate, magnetic tailings, feldspar concentrate, etc. Among them, the tantalum-niobium concentrate can be used for heavy metal extraction, the magnetic tailings can be used for extraction in the steel industry, and the feldspar concentrate can be used in the building sanitary ceramics industry, with a high degree of comprehensive utilization.

[0183] Preferably, the sixth separation unit 7 is connected to the second separation unit 3, and is used to return the tenth mineral fraction to the second separation unit 3 for shaking table concentration operation;

[0184] The eighth separation unit 9 is connected to the fifth separation unit 6 and the seventh separation unit 8, and is used to return the thirteenth mineral fraction to the fifth separation unit 6 for strong magnetic roughing operation, and return the fourteenth mineral fraction to the seventh separation unit 8 for spodumene rough flotation operation;

[0185] The ninth separation unit 10 is connected to the sixth separation unit 7 and is used to return the fifteenth mineral fraction to the sixth separation unit 7 for felt machine operation;

[0186] The tenth separation unit 11 is connected to the seventh separation unit 8 and is used to return the sixteenth mineral fraction to the seventh separation unit 8 for rough flotation of spodumene.

[0187] The system of the present invention is provided with a plurality of recycling units, specifically including the sixth separation unit connected with the second separation unit, returning the tenth mineral fraction in step 7) to the shaking table selection operation in step 3); the eighth separation unit connected with the fifth separation unit and the seventh separation unit, returning the thirteenth mineral fraction in step 9) to the strong magnetic roughing operation in step 6), and returning the fourteenth mineral fraction to the spodumene rough flotation operation in step 8); the ninth separation unit connected with the sixth separation unit, returning the fifteenth mineral fraction in step 10) to the blanket machine operation in step 7); the tenth separation unit connected with the seventh separation unit, returning the sixteenth mineral fraction in step 11) to the spodumene rough flotation operation in step 8). In this way, the yield rate of spodumene concentrate can be further improved, and tantalum-niobium concentrate, magnetic tailings, and feldspar concentrate can be further refined to increase the yield of by-products.

[0188] The above disclosure is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A method for processing spodumene, characterized in that: include: 1) crushing the spodumene ore to obtain ore; 2) Screening the crushed ore through a linear screen and roughing with a felt to obtain a first ore fraction and a second ore fraction; 3) The first ore fraction is subjected to a shaking table concentration operation to obtain a third ore fraction and tantalum-niobium concentrate; 4) Carry out blanket sweeping on the second mineral fraction to obtain a fourth mineral fraction and a fifth mineral fraction; 5) The third ore fraction and the fifth ore fraction are combined to perform a cyclone desludging operation to obtain a sixth ore fraction and a seventh ore fraction; 6) subjecting the sixth mineral fraction to a strong magnetic roughing operation to obtain an eighth mineral fraction and a ninth mineral fraction; 7) The eighth mineral fraction is subjected to a felt machine operation to obtain a tenth mineral fraction and magnetic tailings; 8) performing a spodumene rough floatation operation on the seventh ore fraction to obtain an eleventh ore fraction and a twelfth ore fraction; 9) performing spodumene sweeping operation on the eleventh mineral fraction to obtain the thirteenth mineral fraction and the fourteenth mineral fraction; 10) subjecting the ninth mineral fraction to a strong magnetic concentration operation to obtain the fifteenth mineral fraction and feldspar concentrate; 11) The twelfth mineral fraction is subjected to spodumene concentration operation to obtain the sixteenth mineral fraction and spodumene concentrate.

2. The processing method of spodumene as claimed in claim 1, characterized in that, Step 2) includes: The crushed ore is screened through a linear screen to obtain undersize Ⅰ and oversize Ⅰ; The Ⅰ on the sieve is subjected to a wet ball mill grinding operation and then returned to the previous operation; The undersize I is subjected to high-frequency screening to obtain undersize II and oversize II, and oversize II is returned to the previous operation; The undersize II is subjected to a blanket roughing operation to obtain a first mineral fraction and a second mineral fraction.

3. The processing method of spodumene as claimed in claim 2, characterized in that, The mesh size of the linear sieve is 20-80 meshes; The wet ball mill is a continuous ball mill; The high-frequency sieve has a vibration frequency of more than 24 Hz, an amplitude of 1.0-2.5 mm, and a mesh size of 50-200 meshes; The felt roughing operation is performed by a felt machine.

4. The method for processing spodumene as claimed in claim 1 or 3, characterized in that: The feed particle size of the felt machine is 100-800 meshes.

5. The processing method of spodumene as claimed in claim 1, characterized in that, In step 7), the eighth mineral fraction is subjected to a felt machine operation to obtain a tenth mineral fraction and magnetic tailings, and the tenth mineral fraction is returned to the shaking table concentration operation in step 3); In step 9), the eleventh ore fraction is subjected to a spodumene sweeping operation to obtain a thirteenth ore fraction and a fourteenth ore fraction, the thirteenth ore fraction is returned to the strong magnetic roughing operation of step 6), and the fourteenth ore fraction is returned to the spodumene rough flotation operation of step 8); In step 10), the ninth mineral fraction is subjected to a strong magnetic concentration operation to obtain the fifteenth mineral fraction and feldspar concentrate, and the fifteenth mineral fraction is returned to the blanket machine operation in step 7); In step 11), the twelfth mineral fraction is subjected to spodumene concentration operation to obtain the sixteenth mineral fraction and spodumene concentrate, and the sixteenth mineral fraction is returned to the spodumene rough flotation operation of step 8).

6. The method for processing spodumene according to claim 1 or 5, characterized in that: The strong magnetic roughing and strong magnetic cleaning operations are performed by using a magnetic separator, which is one or a combination of an electromagnetic strong magnetic separator, a drum-type mid-field strong magnetic separator, and a high-gradient vertical ring electromagnetic separator; The drum-type medium-field high-intensity magnetic separator has a capacity of 0.6-1.2T.

7. The method for processing spodumene as claimed in claim 1, characterized in that: A flotation agent is added in the rough flotation operation of spodumene, and the flotation agent is a combination of a soluble alkali and a collector, wherein the soluble alkali is one or more of sodium hydroxide, potassium hydroxide, and calcium hydroxide, and the collector is one or more of oleic acid and sodium oleate.

8. The method for processing spodumene as claimed in claim 7, characterized in that: The amount of soluble alkali added is 300-600g per ton of ore; The added amount of the collector is 400-700g per ton of ore.

9. A spodumene processing system, characterized in that: include: A crushing unit for crushing spodumene ore to obtain ore; A first separation unit connected to the crushing unit, used for screening the crushed ore through a linear screen and roughing with a felt to obtain a first mineral fraction and a second mineral fraction; A second separation unit connected to the first separation unit, used for performing a shaking table concentration operation on the first mineral fraction to obtain a third mineral fraction and tantalum-niobium concentrate; A third separation unit connected to the first separation unit, used for performing a blanket sweeping operation on the second mineral fraction to obtain a fourth mineral fraction and a fifth mineral fraction; A fourth separation unit connected to the second separation unit and the third separation unit, used to combine the third mineral fraction and the fifth mineral fraction for cyclone desludging to obtain a sixth mineral fraction and a seventh mineral fraction; A fifth separation unit connected to the fourth separation unit for performing a strong magnetic roughing operation on the sixth mineral fraction to obtain an eighth mineral fraction and a ninth mineral fraction; A sixth separation unit connected to the fifth separation unit for performing a felt machine operation on the eighth mineral fraction to obtain a tenth mineral fraction and magnetic tailings; A seventh separation unit connected to the fourth separation unit, used for performing a spodumene rough floatation operation on the seventh mineral fraction to obtain an eleventh mineral fraction and a twelfth mineral fraction; An eighth separation unit connected to the seventh separation unit, used for performing spodumene sweeping operation on the eleventh mineral fraction to obtain the thirteenth mineral fraction and the fourteenth mineral fraction; A ninth separation unit connected to the fifth separation unit, used for performing a strong magnetic concentration operation on the ninth mineral fraction to obtain the fifteenth mineral fraction and feldspar concentrate; The tenth separation unit is connected to the seventh separation unit and is used to carry out spodumene beneficiation operation on the twelfth mineral fraction to obtain the sixteenth mineral fraction and the spodumene concentrate.

10. The spodumene processing system according to claim 1, characterized in that: The sixth separation unit is connected to the second separation unit and is used to return the tenth mineral fraction to the second separation unit for a shaking table concentration operation; The eighth separation unit is connected to the fifth separation unit and the seventh separation unit, and is used to return the thirteenth mineral fraction to the fifth separation unit for strong magnetic rough separation, and return the fourteenth mineral fraction to the seventh separation unit for spodumene rough flotation; The ninth separation unit is connected to the sixth separation unit and is used to return the fifteenth mineral fraction to the sixth separation unit for felt machine operation; The tenth separation unit is connected to the seventh separation unit and is used to return the sixteenth mineral fraction to the seventh separation unit for rough flotation of spodumene.

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