145 results about "Spodumene" patented technology

The invention relates to the technical field of sewage treatment, and discloses spodumene flotation tailing water treatment equipment which comprises a plate-and-frame filter press and a feed flow real-time control system electrically connected with the plate-and-frame filter press. According to the system, a slurry characteristic coefficient, a power supply coefficient, a dynamic matching coefficient and a filter cloth state coefficient are respectively obtained in real time through a slurry state evaluation module, a power evaluation module, a process dynamic matching module and a filter cloth state evaluation module. And dynamically calculating and adjusting the target feeding flow by the feeding flow adjusting and controlling model according to the coefficients. According to the invention, through multi-parameter collaborative sensing and intelligent matching, the dynamic adaptation of the feed flow, the slurry characteristics, power supply and the state of the filter cloth is realized, the technical problems of poor adaptability, control lag, easy damage of the filter cloth and high energy consumption of the traditional plate-and-frame filter press under complex working conditions are effectively solved, and the treatment efficiency and the operation stability are remarkably improved.

The utility model discloses a lepidolite spodumene roasting flue gas multi-pollutant efficient treatment device which comprises a high-temperature dust removal and denitration integrated tower, a fan, a flue gas deacidification tower and a flue gas heat exchanger, the high-temperature dust removal and denitration integrated tower is communicated with a kiln tail of a roasting kiln, and a cooling section of the flue gas heat exchanger is communicated with the high-temperature dust removal and denitration integrated tower and the fan. Flue gas is subjected to heat exchange in the cooling section and then conveyed to the flue gas deacidification tower through a fan, a gas outlet of the flue gas deacidification tower is communicated with the heating section of the flue gas heat exchanger, the flue gas is subjected to heat exchange with flue gas of the high-temperature dust removal and denitration integrated tower in the flue gas heat exchanger to be heated, and the flue gas is discharged through a chimney communicated with the heating section on the flue gas heat exchanger. The device disclosed by the utility model can be used for cooperatively treating various pollutants including dust, SO2, HF, HCL, nitrogen oxides, dioxin, heavy metals and the like, so that high-efficiency treatment on flue gas is realized, and good economic benefits are achieved.

The invention discloses a method for extracting lithium by coupling roasting of lepidolite and spodumene, and belongs to the technical field of metal smelting, the method comprises the following steps: calcining a mixture to obtain a roasted material, and then leaching the roasted material to obtain a lithium-containing solution and slag; the mixture comprises mixed stone and a roasting aid, and the mixed stone comprises lepidolite and spodumene. According to the method, the lepidolite and the spodumene are subjected to coupled calcination, and the reaction activity of the lithium element is improved through fluorine in the lepidolite, so that the roasting temperature and the doping amount of a roasting auxiliary agent required by phase transformation of the lepidolite and the spodumene are reduced, and the energy consumption and the generation of slag in the lithium extraction process are further reduced.

This application relates to the field of metal surface treatment materials, specifically disclosing a silicon-integrated inorganic supercrystalline thermal energy powder and its preparation and application methods. The silicon-integrated inorganic supercrystalline thermal energy powder comprises raw material A and raw material B. Raw material A includes the following: magnesium oxide, sodium fluoroaluminate, sodium polyphosphate, zinc oxide, crystalline tin tetrachloride, silicon dioxide, and boric acid. Raw material B includes the following raw materials in parts by weight: spodumene, lithium carbonate, titanium dioxide, zinc silicate, sodium carbonate, antimony trioxide, albite, fluorite, boric acid, sodium hydroxide, and yttrium oxide. The inorganic supercrystalline thermal energy powder of this application has advantages such as corrosion resistance and oxidation resistance, good thermal stability, no damage from thermal cycling, high hardness, wear resistance and high temperature resistance, energy saving, water scale reduction, and the ability to replace organosilicon high-temperature resistant special coatings, baking paints, enamel paints, and ceramic floor glazes.

The invention discloses a spodumene concentrate resourceful treatment method which comprises the following steps: carrying out wet treatment on spodumene acid clinker to prepare lithium-removed filter residues and leachate; carrying out neutralization treatment and desulfurization treatment on the leachate to obtain a lithium-containing purified solution, gypsum and iron oxide red, and carrying out lithium extraction treatment on the lithium-containing purified solution to obtain a lithium salt and mirabilite; the lithium-removed filter residues are treated through a process combining a beneficiation method and a chemical method, and water glass, nano kaolinite, ceramsite aggregate and tantalum-niobium concentrate are obtained. According to the method, whole-process slag-free production of the spodumene concentrate is achieved, and meanwhile the lithium-containing compound with the high purity and the high quality is obtained; and various valuable products can be obtained.

The invention discloses a method for preparing lithium phosphate with high efficiency and low cost, which comprises the following steps: roasting spodumene concentrate and phosphoric acid, and carrying out slurrying leaching and solid-liquid separation to obtain a lithium dihydrogen phosphate solution; the method comprises the following steps: evaporating and concentrating a lithium dihydrogen phosphate solution, regulating the pH value of the lithium dihydrogen phosphate solution to 7-8 by adopting ammonia water, adding calcium phosphate seed crystals, inducing to remove residual calcium ions and magnesium ions in the solution, and carrying out solid-liquid separation to obtain a phosphate solution containing lithium ions; and then adjusting the pH value back to 11-13 by adopting alkali for lithium precipitation to obtain a lithium phosphate solid, and washing and drying to obtain a battery-grade lithium phosphate product. According to the preparation process of the lithium phosphate, the spodumene is acidized and roasted by adopting phosphoric acid, and pulpified and leached, and calcium ions and magnesium ions in a solution are directly induced by adopting calcium phosphate seed crystals to form crystals to be separated out on the basis of a weakly alkaline condition, so that the process steps are simple and convenient, the subsequent purification procedure is omitted, and the preparation process is more suitable for industrialization; meanwhile, the lithium phosphate product with high purity and high yield can be obtained through the simple and convenient process, the purity can reach 99.5% or above, and the yield can reach 92% or above.

The invention discloses a preparation method of a three-dimensional split-phase fancy glaze for coal gangue ceramic body decoration, the three-dimensional split-phase fancy glaze comprises a ground glaze and a cover glaze, the cover glaze comprises the following raw materials by weight: 15-20% of quartz, 10-15% of calcite, 5-10% of kaolin, 5-10% of zinc oxide, 10-15% of calcium phosphate, 25-30% of potassium feldspar, 2-5% of calcium borate, 5-10% of tin dioxide, 3-5% of spodumene, and 2-5% of a coloring oxide; the ground glaze is prepared from the following raw materials in percentage by weight: 15-20% of quartz, 10-15% of wollastonite, 5-10% of kaolin, 10-15% of zinc oxide, 15-20% of calcium phosphate, 15-20% of spodumene, 5-10% of titanium dioxide, 5-10% of calcium borate, 2-5% of coal gangue and 2-5% of coloring oxide, and the product is obtained through raw material preparation, glazing and sintering. The prepared three-dimensional split-phase fancy glaze is simple in process, high in adaptability, unique in effect and wide in market prospect.

The invention discloses a low-temperature-resistant spodumene flotation collector as well as a preparation method and application thereof, and relates to the technical field of mineral flotation. The flotation collecting agent is prepared from the following raw materials in percentage by mass: 60%-80% of an anionic fatty acid collecting agent, 5%-20% of a sulfonate auxiliary collecting agent, 5%-15% of a hydroximic acid auxiliary collecting agent and 3%-15% of a nonionic surfactant. The flotation collecting agent still has excellent collecting performance and selectivity under the low-temperature condition of 6 DEG C, the problem that the low-temperature activity of a conventional flotation collecting agent is suddenly reduced is effectively solved, pre-desliming or calcium chloride activation is not needed when the flotation collecting agent is used, the process is simple, the cost is low, and the flotation collecting agent is suitable for industrial flotation of spodumene ore.

The invention relates to high-strength and high-transparency nano glass ceramic and a preparation method and application thereof, and the high-strength and high-transparency nano glass ceramic is prepared from a synthetic aluminum-rich feldspar ceramic glass material, a beta-spodumene material, a cordierite material, a synthetic beta-dicalcium silicate material and a magnesium aluminate spinel material. According to the present invention, a stable-structure feldspar matrix glass is adopted as a main body precursor mineral material, zirconia micro-powder with a particle size of less than 10 nm is adopted as a nucleation agent and a micro-crack damping pinning agent, nanometer microcrystals with a particle size of less than 100 nm are controlled to be generated in a glass body formed after melting, and the nanometer microcrystals account for 50-95% by volume; the high-strength and high-transparency nanocrystalline glass with a uniform microstructure is formed and woven with matrix glass in a symbiotic manner. The prepared nano microcrystalline glass has the advantages of high hardness, high fracture toughness resistance and high light transmittance, and is suitable for manufacturing various optical glass.

The invention discloses a spodumene smelting slag desulfurization method, and belongs to the technical field of solid waste resource utilization. The method provided by the invention comprises the following steps: S1, mixing spodumene smelting slag with water, and adjusting the pH value to 8-12.5 to prepare ore pulp; s2, a regulator is added into the ore pulp for pulp mixing, and first pulp is obtained; the adjusting agent comprises water glass, sodium citrate and ethylenediamine tetramethylene sodium phosphate; and S3, a collecting agent is added into the first slurry, flotation desulfurization operation is carried out, filtering and drying are carried out, and a gypsum product and desulfurized lithium slag are obtained. The desulfurization method is high in desulfurization efficiency and simple in technological process.

The invention belongs to the technical field of mineral separation, and discloses an amidated carboxylic acid compound, a collecting agent for spodumene flotation, a preparation method of the amidated carboxylic acid compound and application of the amidated carboxylic acid compound in spodumene flotation. The amidated carboxylic acid compound is obtained through the reaction of amino acid, acyl chloride and sodium hydroxide, is resistant to acid and alkali in the normal temperature state, is not prone to decomposition and can improve the selectivity of the collecting agent. The collecting agent comprises 30-45 parts of amidated carboxylic acid compounds, 5-15 parts of oleic acid, 3-10 parts of inorganic base and 10-25 parts of alcohol compounds. The spodumene flotation collecting agent has good dispersity, foaming capacity and capacity of inhibiting gangue, feldspar and quartz minerals, has a good collecting effect on spodumene at the room temperature, remarkably improves ore selectivity, guarantees the concentrate grade of spodumene, meanwhile improves the recovery rate and has a good application effect in spodumene flotation.

The invention relates to the technical field of casting powder, in particular to electromagnetic ejection duplex stainless steel special casting powder which comprises the following raw materials: red mud, wollastonite, modified fluorite, borax, spodumene and blast furnace slag. The fluorite is treated through yttrium oxide modification and forsterite coating processes, release of harmful fluorine ions at high temperature is effectively inhibited, and erosion to refractory materials is greatly reduced; meanwhile, the stability of particles is enhanced through forsterite coating, and the comprehensive use effect of the casting powder is improved; in addition, the modified fluorite is beneficial for forming a slag film with better lubricity, and slag entrapment and casting blank surface defects are reduced.

The invention provides an energy-saving boiler and a thallium removal process for spodumene brine. Relates to the field of energy-saving boilers. The furnace body is fixedly mounted at the bottom of the inner wall of the isolation box through a bracket; and the top cover is fixedly mounted at the top of the furnace body. According to the energy-saving boiler and the spodumene brine thallium removal process provided by the invention, water is injected into the boiler body by arranging the water delivery pump, and external high-temperature flue gas sequentially flows through the plurality of heating pipes, so that layered and stepped uniform heating of the water body in the boiler body is realized, the heat energy utilization efficiency is remarkably improved, and the energy is saved; smoke flows step by step in the heating pipe and is finally discharged, the flow speed of the smoke is reduced, heat is fully exchanged, the smoke discharging temperature is reduced, meanwhile, the water suction pump continuously and stably outputs hot water at the constant temperature of 40 DEG C to the constant-temperature water bath, stability of the water supply temperature is guaranteed, operation is energy-saving, and the automation degree is high.

The invention belongs to the technical field of mineral processing and metallurgical engineering, and particularly relates to a method for extracting lithium from spodumene by acid leaching through microwave and ultrasonic wave synergistic enhancement. The method comprises the following steps: taking beta-spodumene as a raw material, grinding the beta-spodumene, mixing the grinded beta-spodumene with concentrated sulfuric acid and phosphoric acid, carrying out rapid sulfating roasting under microwave heating, placing the obtained roasted clinker in a persulfate solution, and carrying out short-time water leaching under the assistance of ultrasonic waves to realize efficient leaching of lithium. Wherein the dissolution of impurities such as iron and aluminum can be selectively inhibited by adding phosphoric acid, and the mass transfer barrier of lithium ion dissolution can be effectively destroyed by the cooperation of persulfate and the ultrasonic cavitation effect. According to the method, water leaching can be completed within 2-5 minutes, the lithium leaching rate exceeds 97%, the impurity content is low, energy consumption and acid consumption are small, and the method is suitable for continuous clean production.

The present application relates to a kind of rotary kiln device of overhauling slag and lithiumite / cell powder calcination, it is related to rotary kiln related technical field, including supporting platform, feeding equipment, built-in cylinder, sliding groove, cylinder, built-in groove, anti-conclusion component, convex drag reduction component, extrusion type gas blowing component, cleaning component, the present application can solve in the mixed calcination process of overhauling slag and lithiumite / cell powder, fluoride in overhauling slag, cryolite and metal salt in cell powder, under high temperature environment of 800-1000 ℃, complex physical and chemical reaction occurs easily, form low melting point eutectic liquid phase, these liquid phase material has extremely high viscosity, surface tension and adhesion, will firmly adhere to kiln wall, only rely on gravity, these melts can only extremely slowly "creep" or "slip" on kiln wall surface, its root firmly adheres to the surface of heat-resistant layer, when kiln body rotates and it enters high temperature zone again, these melts will be re-baked hard, cause ring problem.

The invention discloses a method for extracting lithium through micro-bubble reinforced flotation of spodumene and roasting acid leaching, belongs to the technical field of mineral processing and resource recovery, and aims at solving the technical problems that the recovery rate of spodumene flotation is low and the influence of flotation reagents on the environment is large. The flotation recovery rate of spodumene under the same condition is increased; and the obtained spodumene concentrate is subjected to roasting and acid leaching treatment, so that the lithium element is further extracted. According to the spodumene beneficiation process based on micro-nano bubble enhanced flotation, through introduction of micro-nano bubbles, the flotation efficiency and the concentrate grade of spodumene are improved, the reagent dosage is reduced, and efficient recovery of spodumene resources is achieved.

The invention discloses an LF refining furnace plastic refractory and a production method thereof, and relates to the technical field of plastic manufacturing. The LF refining furnace plastic refractory is prepared from the following components in parts by weight: 60-75 parts of seawater magnesia particles, 5-8 parts of seawater magnesia ultrafine powder, 5-8 parts of an aluminum sulfate solution, 4-8 parts of acetylated castor oil, 5-8 parts of east mud, 1-3 parts of spodumene, 2.5-3.5 parts of ammonium magnesium phosphate whiskers, 1-2 parts of liquid raw molasses, 2-4 parts of silica fume, 1-2 parts of amino phenolic resin powder, 1-1.5 parts of sodium hexametaphosphate and 0.5-1 part of British glue. According to the plastic refractory for the LF refining furnace, the seawater magnesia particles with specific particle size distribution serve as aggregate, close packing and basic fire resistance of the material are ensured, the seawater magnesia ultrafine powder and the ammonium magnesium phosphate whiskers are matched, the high-temperature breaking strength and toughness of the material are improved, and the final product has excellent plasticity.

The present disclosure relates to an apparatus and process for lithium aluminosilicate transformation roasting, waste heat recovery and tail gas treatment, and relates to the technical field of lithium aluminosilicate transformation. The transformation unit in the apparatus comprises a heating assembly, a transformation assembly and a transformation material gas-solid separator; the transformation material gas-solid separator comprises a transformation material inlet, a solid outlet and a gas outlet; the heating assembly comprises a connected temperature rising furnace and a first air supply assembly; the transformation assembly comprises a connected transformation furnace and a second air supply assembly; the first outlet of the temperature rising furnace is connected with the second inlet of the transformation furnace, and the first outlet of the transformation furnace is connected with the transformation material inlet; the temperature rising furnace and the transformation furnace are both vertical furnaces; the first inlet of the heat exchange unit is connected with the feeding unit, and the second inlet of the heat exchange unit is connected with the gas outlet; the first outlet of the heat exchange unit is connected with the second inlet of the temperature rising furnace, the second outlet of the heat exchange unit is connected with the flue gas treatment unit, and the solid outlet is used for making the transformed material enter the subsequent process.

The utility model provides a waste calcium carbide remelting and upgrading conveying device, which belongs to the technical field of conveying devices, and comprises a crushing chamber, a rotator arranged in the crushing chamber, two first rotating shafts rotationally connected in the rotator, two crushers fixedly connected to the lower ends of the two first rotating shafts, and two second rotating shafts rotationally connected in the two crushers. The two first gears are fixedly connected to the circumferential surfaces of the two first rotating shafts, the gear ring is fixedly connected to the interior of the crushing chamber, and the first gears are meshed with the gear ring. Meanwhile, powder calcium carbide directly reaches the furnace bottom through the inside of the electrode and does not make contact with a furnace charge layer, current shunting is eradicated, waste products are directly added to the furnace bottom after being powdered and can be rapidly reacted and fused with semi-finished product calcium carbide, and electric energy consumption is greatly reduced.

The application provides a composite phase change energy storage material using spodumene lithium extraction tailings (lithium tailings) as a carrier and a preparation method thereof. The geopolymer microspheres are prepared by a dispersion suspension method, and are washed, dried and calcined. Then, through heating and vacuum impregnation, the phase change energy storage material is stably encapsulated in the geopolymer microspheres, and a shaped composite phase change energy storage material is obtained. The application not only provides a phase change energy storage material with large heat storage capacity, excellent encapsulation performance, good chemical stability, strong anti-leakage capacity, strong cycle stability, strong heat conduction capacity and good light-heat conversion capacity, but also provides a new high-value utilization method of spodumene lithium extraction tailings.

The invention discloses a high-simulation and high-performance stone-imitating bright ceramic tile which sequentially comprises a high-strength green body layer, a functional ground glaze layer, a multi-mode digital texture layer, an interface strengthening-optical adaptation transition layer and a high-transmittance protective glaze layer from bottom to top. The raw materials of the high-strength green body layer comprise spodumene tailing powder and a compound of zirconium silicate and zinc oxide serving as a sintering aid, the water absorption rate is smaller than or equal to 0.2% after sintering, the fracture modulus is larger than or equal to 42 MPa, the high-strength green body layer is covered with the functional ground coat layer, and the raw materials of the functional ground coat layer comprise a porous forming agent and active components capable of reacting with follow-up ink. According to the invention, through multi-modal data acquisition and morphology channel printing, full-dimensional physical recarving of natural stone from macroscopic color veins to micro-crystal fluctuations is realized, and high-refractive-index ink and an interface strengthening-optical adaptation transition layer are combined, so that the appearance of the natural stone is enhanced. The product can present the specific deep feeling, moist feeling and mineral crystal flash of natural stone under any illumination, and the vivid degree which is difficult to distinguish by naked eyes is achieved.

The invention discloses a method for extracting lithium sulfate from high-iron spodumene concentrate, which comprises the following steps: mixing high-iron spodumene concentrate, sulfate and carbonate, and processing to obtain powder; the mass ratio of the high-iron spodumene concentrate to the sulfate to the carbonate is 1: (0.3-0.8): (0.01-0.5); the powder is subjected to brick pressing forming, a powder green brick is obtained, and the powder green brick is dried and roasted at the temperature of 900-1050 DEG C; cooling and crushing the roasted powder green brick to obtain a roasted particle material; adding water into the roasted particle material, carrying out ball milling, and leaching to obtain a leaching solution and leaching residues; and carrying out purification and concentration treatment on the leachate to obtain the lithium sulfate. By implementing the method, the interference of iron impurities can be eliminated, and the cost is reduced while the lithium recovery rate is improved.

The invention discloses a wear-resistant and crack-resistant porcelain glaze which is mainly prepared from the following raw materials: 20-35 parts of zirconium silicate, 2-3 parts of zinc oxide, 6-15 parts of kaolin, 15-20 parts of potassium feldspar, 8-12 parts of spodumene, 5-8 parts of magnesium oxide, 9-16 parts of corundum and 6-12 parts of calcite. The invention discloses a preparation process of a wear-resistant and crack-resistant porcelain glaze, which comprises the steps of frit micro-crystallization treatment, optimization of the composition of frit glaze and heating, and at the same time, under the catalytic action of zinc oxide, the grain size of crystal grains separated out from zirconium silicate is smaller, and the prepared porcelain glaze is excellent in compactness and more uniform in coverage. Therefore, toughness, hardness and wear resistance are improved, and wear resistance and crack resistance of the glaze are guaranteed. Compared with the prior art, the prepared glaze layer has more excellent wear resistance and crack resistance.

The invention belongs to the field of new energy, and discloses an African spodumene beneficiation process which comprises the following steps: step 1, crushing African spodumene ore to obtain a crushed product; step 2, carrying out ball milling on the crushed product to obtain a ball-milled product; 3, light components and heavy components in the ball-milling product are separated, and a first light component and a first heavy component are obtained; 4, at least part of mica particles in the first light component are removed, and slurry is obtained; step 5, removing slime in the slurry to obtain a second heavy component; and step 6, carrying out first flotation treatment and second flotation treatment on the second heavy component. According to the process, ball milling is conducted firstly, then large-particle mica is removed, then desliming is conducted, and finally flotation of mica and spodumene lithium concentrate is conducted, the problem that spodumene is difficult to be smoothly sorted due to the fact that the mica content is too high and the ore mud content is large is solved, compared with a traditional process, the recovery rate of the lithium concentrate is increased by 2%-6%, and the operation recovery rate of spodumene is higher than 70%. Meanwhile, the invention further discloses a system suitable for the process.

A method for producing a lithium solution according to the present disclosure comprises igniting a mixture of alpha-spodumene and metallic aluminum to cause a thermite reaction and bringing the reaction product into contact with a leaching agent to obtain a lithium solution. The leaching agent may be water or sulfuric acid. When the leaching agent is water, it is also possible to obtain a lithium solution by bringing water into contact with the reaction product without subjecting the reaction product to a sulfation treatment.

The lithium extraction method provided by the embodiment of the invention comprises the following steps: mechanically activating lithium ore slurry to obtain activated slurry; stirring the activated slurry under the action of an electric field, and leaching; then carrying out solid-liquid separation to obtain a lithium-rich solution and leaching residues; the lithium ore slurry comprises beta-spodumene and alkali liquor, and the concentration of the alkali liquor is 4wt%-40wt%. In the lithium extraction step, under the alkaline condition, under the synergistic effect of mechanical activation and an electric field, the lithium leaching efficiency of beta-spodumene is remarkably improved. The method can be carried out at normal pressure and low temperature, does not need non-standard equipment such as a pressure container and special corrosion-resistant equipment, and is easy for industrial production.

This invention belongs to the field of building materials technology. Specifically, it discloses a glaze for preventing ceramic tile deformation and an anti-deformation ceramic tile, comprising the following raw materials in parts by weight: 15-30 parts spodumene, 15-30 parts calcite, 12-20 parts bauxite, 8-15 parts pyrophyllite, 6-12 parts modified magnesium borate whiskers, 5-9 parts wet-process mica powder, 3-6 parts palygorskite, 1-2.5 parts calcium borate, 1-2 parts tricalcium silicate, and 0.2-0.7 parts ammonium fluoride. The system of this invention uses spodumene, calcite, bauxite, and pyrophyllite as the matrix minerals, effectively lowering the sintering temperature and providing basic strength to the system. At a lower firing temperature, a high degree of sintering of the glaze layer can be ensured, preventing sintering failure of other materials. By adding modified magnesium borate whiskers and wet-process mica powder, the flexural strength is effectively improved.

The application provides a preparation method of a high-thickness low-temperature binder grinding roller needle ceramic grinding tool, and the binder is composed of 10-17% of superfine black clay powder, 35-45% of low-melting-point superfine glass material, 5-10% of nano silicon dioxide, 1-3% of superfine spodumene and 25-49% of superfine feldspar powder, and the low-melting-point superfine glass material is composed of 44-46% of silicon dioxide, 18-20% of aluminum oxide, 1-2% of magnesium oxide, 11-13% of sodium oxide and 16-20% of boron trioxide; the preparation method of the high-thickness low-temperature binder grinding roller needle ceramic grinding tool can reduce the sintering temperature during the production of the grinding tool, realize low-temperature sintering of the binder, avoid the situation that the high-thickness grinding tool is prone to collapse and black core at 1200-1300 DEG C, and reduce the production energy consumption.

The application discloses a process method for extracting pure spodumene minerals, which comprises the following steps: anti-pollution crushing and weak magnetic impurity removal; strong magnetic separation of +0.15 mm sieve product for impurity removal; regrinding of +0.15 mm particle size spodumene strong magnetic separation concentrate product; fine particle product strong magnetic separation operation; screening and grading of the strong magnetic separation spodumene concentrate; super-shaking table gravity separation; and acid leaching depth impurity removal. The application adopts the combined process of magnetic separation-gravity separation-acid leaching to extract pure spodumene minerals, and has the characteristics of good purification effect, high purity of the pure minerals, simple operation, environmental protection and no pollution.