336 results about "Lithium oxide" patented technology

The invention discloses high-purity lithium sulfide as well as a preparation method and application thereof. The preparation method comprises the step that lithium hydride, lithium hydroxide and a sulfur source are subjected to a heating reaction in a dry inert atmosphere, and the high-purity lithium sulfide is obtained. The molar ratio of lithium hydride to lithium hydroxide is X: (10-X), and X is 1-6. The invention also discloses the prepared high-purity lithium sulfide and application of the high-purity lithium sulfide in preparation of sulfide solid electrolyte. Lithium hydroxide and lithium hydride are mixed to serve as a lithium source in lithium sulfide preparation, the lithium hydroxide quickly and uniformly reaches the reaction temperature by means of the characteristic that the lithium hydride reacts with a sulfur source to release heat and produce gas, the lithium hydride reacts to produce gas, meanwhile, discharging of product water vapor is facilitated, and oxygen in the environment is isolated; and hardening and generation of a side reaction product lithium sulfate are prevented, the conversion rate of lithium hydroxide to lithium sulfide is improved, and the raw material and process cost for preparing lithium sulfide is remarkably reduced.

The invention discloses high-toughness ultrathin flexible glass and a preparation method thereof, and relates to the technical field of glass manufacturing. The ultrathin flexible glass is prepared from the following raw materials: silicon dioxide, aluminum oxide, lithium oxide, sodium oxide, magnesium oxide, a modified nano reinforced phase, a high-temperature melting regulator and cerium dioxide. The modified nano reinforced phase is prepared by the following steps: pre-treating silicon carbide and silicon nitride with hydrochloric acid, and mixing with nano zirconium oxide to obtain a mixture; and modifying the mixture with a silane coupling agent to obtain the modified nano reinforced phase. The high-temperature melting regulator is a mixture of lithium borate, sodium sulfate and lithium fluoride. The preparation method of the ultra-thin flexible glass comprises the following steps: preparing the modified nano reinforced phase, melting and homogenizing the glass, forming the glass substrate, and preparing the ultra-thin flexible glass. The ultra-thin flexible glass prepared by the invention has relatively high fracture toughness and structural rigidity, excellent flexibility and bending fatigue durability, and excellent thermal shock resistance.

The invention discloses a method for preparing a lithium-copper composite negative electrode by utilizing lithium slag and application, and the preparation method of the negative electrode comprises the following steps: adding the lithium slag with certain concentration after removing impurities such as Ca < 2 + >, Mg < 2 + > and Fe < 3 + > through acid treatment into metal lithium in a molten state, and fully stirring until the reaction is complete; and coating the molten metal lithium obtained after the reaction on a current collector to obtain the modified lithium metal negative electrode plate. The prepared lithium-copper composite negative electrode has a lithium-loving 3D frame structure, volume expansion in the circulation process can be inhibited, lithium oxide, lithium aluminum alloy and lithium silicon alloy existing on the 3D frame structure can serve as lithium-loving sites for uniform lithium ion deposition, lithium dendrite growth is inhibited, and long-term stable circulation of the lithium metal negative electrode is promoted.

Disclosed in the present invention are a 90°C thermoplastic halogen-free low-smoke flame-retardant polyolefin sheath material and a preparation method therefor. The sheath material is prepared from raw materials comprising the following components in parts by mass: 20-40 parts of an ethylene-vinyl acetate copolymer, 20-40 parts of a linear low-density polyethylene, 2-10 parts of a high-density polyethylene, 20-40 parts of a metallocene ethylene-octylene copolymer, 10-15 parts of a maleic-anhydride-grafted metallocene linear low-density polyethylene copolymer, 58-73 parts of aluminum hydroxide, 20-25 parts of modified magnesium hydroxide, 64-84 parts of a synergistic flame retardant, 2-3 parts of a coupling agent, 1-4 parts of a lubricant, 1-3 parts of an antioxidant, and 2-7 parts of a coloring agent, wherein the synergistic flame retardant comprises lithium oxide. A matrix resin has low-temperature performance, mechanical properties and cracking resistance. With regard to flame retardance, a large amount of the synergistic flame retardant, i.e., lithium oxide, is added to a traditional magnesium-aluminum compound flame-retardant system, and therefore an off-white hard shell can be formed during a combustion process while low heat release is ensured, thereby ensuring no dripping during the combustion process.

The invention relates to lithium sulfide and a preparation method thereof.The preparation method includes the following steps that sublimed sulfur powder and a lithium source are mixed and subjected to a heating reaction, and the lithium source comprises at least one of anhydrous lithium hydroxide, lithium hydroxide monohydrate, lithium oxide, lithium hydride and lithium carbonate; a reducing gas is introduced while the heating reaction is performed, or the reducing gas is introduced after the heating reaction is finished, and a reduction reaction is performed; and after the reaction is finished, introducing protective gas for calcining to prepare the lithium sulfide. The preparation method provided by the invention can realize low-cost and high-purity production of lithium sulfide, and ensures the safety and environmental protection of the production process.

The invention relates to a method for simultaneously preparing lithium hydroxide and sulfuric acid. The invention provides a method for simultaneously preparing lithium hydroxide and sulfuric acid, which comprises the following steps: preparing a bipolar membrane electrodialysis device which comprises a first bipolar membrane, an anion exchange membrane, a cation exchange membrane and a second bipolar membrane, and forming an acid chamber between the first bipolar membrane and the anion exchange membrane, a salt chamber is formed between the anion exchange membrane and the cation exchange membrane, and an alkali chamber is formed between the cation exchange membrane and the second bipolar membrane; a lithium sulfate aqueous solution is added into a salt chamber of the bipolar membrane electrodialysis device, a sulfuric acid aqueous solution is added into an acid chamber, and a lithium hydroxide aqueous solution is added into an alkali chamber; and discharging the desalted solution formed in the salt chamber of the bipolar membrane electrodialysis device, discharging the sulfuric acid aqueous solution formed in the acid chamber, and discharging the lithium hydroxide aqueous solution formed in the alkali chamber.

The invention discloses a method for converting lithium hydroxide into lithium carbonate. The method comprises the following steps: S1, preparing or taking a lithium hydroxide solution and a carbonate solution; s2, putting the lithium hydroxide solution and the carbonate solution into electrodialysis equipment, and carrying out electrodialysis treatment; and S3, after electrodialysis is finished, collecting a lithium carbonate solution, and sequentially carrying out lithium precipitation and solid-liquid separation on the lithium carbonate solution to obtain the battery-grade lithium carbonate. According to the method for converting lithium hydroxide into lithium carbonate disclosed by the invention, CO2 is replaced by carbonate, so that the generation of lithium bicarbonate is avoided, the lithium carbonate and the byproduct alkali liquor are directly obtained, the raw material source is wide, the preparation condition is mild, the production cost is greatly reduced, and the method has huge potential economic benefits.

The present invention discloses a tellurium-lead-lithium oxide glass powder for BC cell N-region conductive paste and its preparation method, belonging to the field of photovoltaic silver paste. The glass powder adopts components with high Pb, Te, and Li: aTeO2 - bPbO - cLi2O - dBi2O3 - eWO3 - fZnO - gSiO2 - hNa2O; where a + b + c + d + e + f + g + h = 1, 0.2 < a < 0.4, 0.1 < b < 0.4, 0.1 < c < 0.25, 0 < d < 0.1, 0 < e < 0.1, 0 < f < 0.1, 0 < g < 0.1, 0 < h < 0.05, and a + b > 0.5, and the ratio of c to h is (3 - 10):1. By controlling the specific Pb, Te, and Li contents and the specific Li / Na ratio in the present invention, a strong corrosion effect on the poly layer of the cell is achieved, enabling more silver ions dissolved in the glass liquid to recrystallize on the surface of the silicon wafer, thereby achieving good ohmic contact.

The present invention relates to a method for preparing lithium sulfide, according to the present invention, when preparing lithium sulfide by a reaction between a lithium raw material and hydrogen sulfide, the reaction is carried out under relatively mild conditions compared to the prior art, so that frequent maintenance or replacement due to corrosion and failure of a reactor and various pipes is not required, thereby improving the economical efficiency of the process. Further, by reusing the unreacted hydrogen sulfide from which moisture has been removed and the solvent, process costs can be reduced, and economical efficiency can be ensured during mass production. Furthermore, moisture and water vapor generated in the lithium sulfide generation reaction are effectively removed, thereby preventing a reverse reaction for generating lithium hydroxide, promoting a positive reaction, and producing high-quality lithium sulfide with high purity and high yield. In addition, the particle size can be adjusted in units, and a separate pulverizing space or pulverizing table is not required, so that convenience and mass productivity are excellent.

The present invention provides a method for producing lithium hydroxide, comprising the steps of reacting lithium carbonate and calcium hydroxide in a liquid to obtain a solution containing lithium hydroxide, and performing solid-liquid separation on the solution into a liquid component containing lithium hydroxide and a solid component containing lithium derived from the lithium carbonate, and recovering lithium hydroxide from the liquid component.

The invention discloses a method for in-situ lossless repair of an attenuated lithium manganate positive electrode material, which specifically comprises the following steps: adding the attenuated lithium manganate material into a lithium hydroxide solution, supplementing lithium to an original value by a hydrothermal method, repairing the component and structure defects of attenuated LiMn2O4 by combining high-temperature roasting, and recycling and regenerating lithium manganate particles with severely attenuated capacity. The lithium manganate positive electrode material is directly recovered by the lossless method, and the chemical components and crystallinity of the invalid positive electrode material in various health states are reconstructed, so that the invalid positive electrode material can be repeatedly used in the lithium ion battery. Finally, the treated recycled powder material is coated by a metal organic framework (MOFs) self-assembly method, so that the electrochemical performance of the treated powder material is further improved. The method is simple, environmentally friendly and low in energy consumption, has obvious advantages compared with a traditional hydrometallurgy battery recovery method, and lays an important foundation for sustainable manufacturing of energy materials.

The application belongs to the technical field of lithium ion batteries, and particularly relates to a carbon-nitrogen double-layer coated positive electrode lithium supplementing agent and a preparation method and application thereof. The preparation method of the carbon-nitrogen double-layer coated positive electrode lithium supplementing agent provided by the application is as follows: a carbon source such as sucrose, a nitrogen source such as melamine, and an iron source such as nano-iron oxide are uniformly mixed, and then one-step sintering is performed to make the mixture dehydrate; then in the second-step sintering, a lithium source such as pitch and lithium oxide (Li2O) is introduced to generate lithium ferrite (Li5FeO4), which effectively avoids water generated by dehydration of the carbon source such as sucrose and impurities generated by the reaction of lithium ferrite, improves the purity and performance of the positive electrode lithium supplementing agent, and meanwhile, the carbon-nitrogen double-layer coating can effectively coat the lithium ferrite and introduce nitrogen, thereby improving the stability, ion diffusivity and conductivity of the positive electrode lithium supplementing agent, so as to solve the technical problem of poor performance of the lithium manganate positive electrode lithium supplementing agent prepared by the existing preparation method.

The invention discloses a current collector compositely modified by a polymer / metal-based oxyhalide and application of the current collector in a lithium metal battery, and the current collector is prepared by using the polymer and the metal-based oxyhalide as raw materials to prepare slurry and coating the surface of the current collector of the lithium metal battery with the slurry. A solid electrolyte interface (SEI) layer rich in lithium oxyhalide (Li3OX, X = Cl, Br, I) fast ion conductors is generated in situ through metal-based oxyhalide and lithium metal. The composite interface protection layer formed by the polymer organic component and the metal-based oxyhalide inorganic component has excellent flexibility, can adapt to the volume change of lithium metal in the charging and discharging process, guarantees the integrity and mechanical properties of an SEI layer, and inhibits the growth of lithium dendrites; in addition, in-situ formation of a lithium oxyhalide-rich fast lithium ion conductor can promote fast diffusion and transfer of lithium ions, and the long-term cycle performance of the lithium metal battery under high rate is improved.

The invention discloses a preparation method and application of lithium iron phosphate, and belongs to the field of lithium ion battery positive electrode materials. The preparation method comprises the following steps: (1) pre-sintering a lithium iron phosphate precursor; (2) uniformly mixing the pre-sintered lithium iron phosphate precursor with a lithium source, a phosphorus source, a doping element and a carbon source, grinding, and carrying out spray drying to obtain a spray material; and (3) carrying out sintering treatment on the spray material, and carrying out crushing and demagnetizing treatment after cooling to obtain the lithium iron phosphate. The pre-sintering temperature in the step (1) is 500-750 DEG C, and the pre-sintering time is 4-8 hours. The lithium source in the step (2) is one or more of lithium carbonate, lithium hydroxide, lithium dihydrogen phosphate and lithium phosphate; the phosphorus source is one or more of phosphoric acid, lithium dihydrogen phosphate and iron phosphate; the carbon source is at least two of glucose, cane sugar, polyethylene glycol and starch. The lithium iron phosphate provided by the invention can achieve the effects of low specific surface area, high compaction density and excellent electrochemical performance.

Lithium oxide argyrodites having the formula Li(6−y)PS4O(1−y)X(1+y) where X is a halide anion and y is a number between 0 and 0.8, inclusive, are provided herein. Also provided are methods of synthesizing the lithium oxide argyrodites and composites including the lithium oxide argyrodites, as well as other alkali metal oxide argyrodites and related methods and composites.

The present invention relates to a process for preparing lithium sulfide (LiS) from lithium hydroxide (LiOH) and hydrogen sulfide (HS), characterized in that the lithium hydroxide is sulfided in a reaction zone (9) comprising at least one moving-bed tubular reactor (9a) with an ascending oscillating spiral configuration, in which the lithium hydroxide (4) circulates countercurrently to an anhydrous gas mixture (10) containing hydrogen sulfide and at least one inert gas.

The invention relates to the technical field of glass ceramics, in particular to a silicon dioxide-containing glass ceramic wafer substrate and a preparation method thereof. The preparation method comprises the following steps: weighing aluminum oxide, hydroxyethyl urea, chromium dioxide, lithium oxide, magnesium oxide, titanium dioxide, a clarifying agent, a toughening agent and silicon dioxide; preparing an aqueous solution from hydroxyethyl urea, and putting the powder, a clarifying agent, a toughening agent and the aqueous solution into a ball milling tank to obtain slurry; carrying out vacuum defoaming, tape casting, drying, glue removal heat treatment, glass melting, rolling and annealing treatment to obtain a glass plate; and polishing, ultrasonically cleaning and drying the glass plate to obtain the wafer substrate. According to the preparation method, hydroxyethyl urea and chromium dioxide are combined under a specific controlled heat treatment system, so that the functions of a conventional dispersing agent are exceeded, a unique toughening phase existing in a grain boundary is generated through in-situ reaction, uniform formation of a superfine nanocrystalline structure is realized synergistically, and thus the fracture toughness and the surface flatness of the material are synchronously and remarkably improved.

This invention provides a method for producing a lithium-metal composite oxide using a two-stage firing process comprising a preliminary firing step for heating a precursor compound of a lithium-metal composite oxide and a lithium compound at a temperature of 500ºC to 650ºC to obtain a preliminary fired product; a pelletizing step for producing a pellet of the preliminary fired product; and a firing step for firing the pellet at a temperature of 700ºC to 1000ºC, such method is capable of minimizing the difference between a raw material metal ratio and the metal composition in a lithium-metal composite oxide, which occurs as a result of lithium element volatilization, and minimizing corrosion of a furnace body by lithium hydroxide.

The invention relates to the technical field of batteries, in particular to a high-entropy amorphous oxide material and a preparation method thereof, an electrolyte material and a battery. The preparation method provided by the invention comprises the following steps: providing lithium oxide, rare earth oxide and zirconium oxide, and mixing the lithium oxide, the rare earth oxide and the zirconium oxide according to a preset first molar ratio to obtain an oxide matrix; providing a transition metal oxide and a glass network forming body, and mixing the matrix, the transition metal oxide and the glass network forming body according to a preset second molar ratio to obtain a precursor; treating the precursor by adopting a sol-gel method or a ball milling method, and then heating and cooling to obtain an amorphous compact structure; and providing a substrate, taking the amorphous compact structure as a target material, depositing the target material on the substrate by adopting a magnetron sputtering method, and stripping the substrate to obtain the high-entropy amorphous oxide material. The invention seeks an amorphous oxide material which is stable in structure and has higher ionic conductivity compared with an inorganic solid electrolyte.

The application provides a positive electrode active material and a preparation method and application thereof. The positive electrode active material comprises primary particles and secondary particles formed by agglomeration of the primary particles; the primary particles comprise a ternary positive electrode material matrix and a coating layer arranged on at least part of the surface of the ternary positive electrode material matrix; the coating layer comprises a lithium oxide containing an A element; the A element comprises at least one of Co, W, Zr, Sb, Nb, Cr and Ta; and the positive electrode active material satisfies L / TM >= 1 and (BET1-BET0) / BET0 <= 20%, and the porosity is not higher than 3%. The positive electrode active material has good charge and discharge uniformity, and can effectively improve the cycle stability of a battery.

The invention provides a preparation method of lithium hydroxide, and relates to the technical field of salt lake lithium extraction. The preparation method of the lithium hydroxide comprises the following steps: S1, uniformly mixing a nanofiltration concentrated solution with a lithium precipitation mother solution, carrying out heating reaction, and filtering to obtain a mixed solution A; s2, the mixed solution A is subjected to impurity removal through a resin column, and a mixed solution B is obtained; s3, concentrating and crystallizing the mixed solution B to obtain a mixed solution C; s4, adding an acid solution into the mixed solution C to adjust the pH value, and then performing electrodialysis to obtain a mixed solution D; s5, the mixed solution D is subjected to boron removal through a resin column, and a purified solution is obtained; s6, the purified liquid is subjected to bipolar membrane electrodialysis, and a lithium hydroxide solution and an acid solution are obtained; and S7, evaporating, concentrating, crystallizing and centrifuging the lithium hydroxide solution to obtain lithium hydroxide. According to the method, the nanofiltration concentrated liquor and the lithium precipitation mother liquor are used for treating wastes with wastes, so that efficient recovery of lithium and green preparation of lithium hydroxide are realized.

This method comprises: mixing a first solution containing a metal nitrate with a second solution containing lithium hydroxide to precipitate a metal hydroxide; thermally decomposing lithium nitrate produced from the metal nitrate and the lithium hydroxide; and recovering lithium oxide contained in the thermal decomposition product of the lithium nitrate. This method may further comprise converting lithium oxide into lithium hydroxide and reusing the lithium hydroxide.

The invention belongs to the technical field of steel and iron smelting and material processing, and particularly discloses a peritectic steel casting blank surface longitudinal crack control method which specifically comprises the steps that firstly, the physical performance of casting powder is optimized, the crystallization temperature of the casting powder is controlled in a segmented mode according to the carbon content of peritectic steel, and the content of lithium oxide in the casting powder is controlled; secondly, adjusting the control precision of the crystallizer, controlling the opening degree shrinkage amount of a wide-surface copper plate of the crystallizer, and adjusting the narrow-surface taper of the crystallizer according to the type of the crystallizer; and finally, technological operation optimization is conducted, and the position of a tundish submersed nozzle, the fluctuation range of the liquid level of a crystallizer and the frequency of increasing and decreasing the pulling speed are controlled. According to the technical scheme, longitudinal cracks on the surface of the peritectic steel casting blank can be effectively controlled, and the quality and the production efficiency of the casting blank are improved.

Glass compositions include one or more of phosphorus oxide (P2O5), niobia (Nb2O5), titania (TiO2), potassium oxide (K2O) and lithium oxide (Li2O) as essential components and may optionally include barium oxide (BaO), zinc oxide (ZnO), V2O5 (vanadia), FeO (iron oxide) and other components.

The utility model relates to the technical field of lithium hydroxide production equipment, and provides a lithium hydroxide crushing production unit which comprises a crushing device for crushing, grinding and screening lithium hydroxide, and a re-feeding device and a conveying device which are arranged at the downstream of the crushing device, wherein the crushing device comprises a crushing mechanism, a grinding mechanism and a screening mechanism which are arranged up and down, the grinding mechanism is connected with the crushing mechanism to coaxially rotate with the crushing mechanism, and the screening mechanism and the grinding mechanism synchronously and reversely rotate. Through the crushing mechanism, the grinding mechanism and the screening mechanism which are arranged up and down on the crushing device, lithium hydroxide particles are refined and screened twice in a manner of crushing, grinding in the same direction and then screening in the reverse direction, and then cyclic crushing is realized through the re-feeding device, so that the uniformity of the granularity of the lithium hydroxide particles conveyed by the conveying device is ensured; the production efficiency is improved; in addition, a production unit composed of the smashing device, the re-feeding device and the material conveying device is compact in structure, and the production cost is greatly reduced.

The invention provides a preparation method for synthesizing lithium sulfide from industrial-grade lithium hydroxide and sodium sulfide, a preparation method for a solid electrolyte and a solid-state battery, and the preparation method for synthesizing lithium sulfide from industrial-grade lithium hydroxide and sodium sulfide comprises the following steps: dissolving an industrial-grade lithium hydroxide raw material, and sequentially carrying out oxidation, filtration, washing and drying to obtain lithium sulfide; sodium sulfide and a flocculating agent are added for precipitation and filtration, then sodium carbonate and barium nitrate are sequentially added for impurity removal and filtration, and a lithium hydroxide purified solution is obtained; reacting the sodium sulfide solid with dilute sulphuric acid to obtain hydrogen sulfide gas; hydrogen sulfide gas is introduced into the lithium hydroxide purification liquid for a reaction, and lithium sulfide slurry is obtained; evaporating, concentrating and crystallizing the lithium sulfide slurry, and centrifugally separating; and carrying out vacuum calcination on the crystal, and crushing to obtain lithium sulfide powder. Through oxidative conversion, chemical precipitation and crystallization purification, efficient and deep removal of impurities is realized, the problems that raw material components are complex and difficult to separate are solved, and the purity of lithium sulfide is improved.

The invention relates to the technical field of battery preparation, and provides a lithium oxide gradient doped lithium-phosphorus-sulfur-chlorine-oxygen solid electrolyte and a preparation method thereof.The lithium oxide gradient doped lithium-phosphorus-sulfur-chlorine-oxygen solid electrolyte comprises the main components that a lithium oxide concentration gradient exists in the thickness direction of the electrolyte, the molar content of surface layer lithium oxide is 5%-15%, and the molar content of surface layer lithium oxide is 5%-15%; the molar content of lithium oxide in the central layer is 0.5%-3%; wherein 0.05 < = x < = 0.8, and 0.01 < = y < = 0.3. According to the lithium oxide gradient doped lithium-phosphorus-sulfur-chlorine-oxygen solid electrolyte, the lithium oxide concentration gradient is set along the thickness direction of the electrolyte, so that the stress concentration caused by sudden concentration change can be avoided, and the interface layering risk and the longitudinal penetration of lithium dendrites can be inhibited.

The invention discloses high-strength chemically strengthened glass and a preparation method thereof, and relates to the technical field of glass. The chemically strengthened glass is prepared from the following raw materials: silicon dioxide, aluminum oxide, lithium oxide, sodium oxide, magnesium oxide, zirconium titanate, a cerium dioxide-yttrium oxide compound and a clarifying agent. The cerium dioxide-yttrium oxide compound is prepared from yttrium oxide and cerium dioxide; the clarifying agent is nano antimony trioxide. The preparation method of the high-strength chemically strengthened glass comprises the following steps: synthesis of zirconium titanate, preparation of a cerium dioxide-yttrium oxide compound, molding of a glass substrate, glass microcrystallization and preparation of the chemically strengthened glass. The chemically strengthened glass prepared by the invention is high in strength, and has excellent mechanical properties, impact resistance and acid and alkali resistance.

The present invention relates to the technical field of inorganic materials and new energy battery materials, and specifically to a method for preparing an oxide solid electrolyte. The high-temperature melt homogeneous reaction plus high-pressure blowing process of the present invention is used to prepare solid electrolyte ultrafine powders. First, zirconium oxide and lanthanum oxide are subjected to a high-temperature melt reaction, and then the temperature is appropriately lowered. Then, lithium oxide is added to the system and liquid phase homogenization reaction is carried out again. This can avoid the super-boiling temperature loss of lithium oxide, thereby improving the quality of lithium lanthanum zirconium oxide solid electrolyte ultrafine powders. The above process has the advantages of short process, low production cost, and less environmental pollution. The product produced has good particle size consistency, good dispersibility, and high surface activity. The uniformity, surface energy, and conductivity of the solid electrolyte powder are greatly improved, and the electrolyte conductivity can reach ≥10 ‑3 S / cm, which improves the performance and stability of ultrafine oxide solid electrolyte powders in the fields of new energy battery materials and so on.

The invention relates to the technical field of lithium compound production, in particular to a continuous production device for preparing lithium carbonate through lithium hydroxide carbonization reaction and a working method thereof.The continuous production device comprises a lithium hydroxide slurry blending tank, a main reactor, an aging tank, a centrifugal machine and a drying device which are sequentially connected through pipelines and pumps; the drying device at least comprises a pre-carbonization tower and a deep carbonization tower, and the drying device comprises a pre-pre-drying mechanism, a main drying mechanism and a final drying mechanism; the drying efficiency is high, the adaptability is high, the three-stage sectional design is adopted, optimization treatment is carried out according to different characteristics of materials under different water contents, especially air arrow impact and fall crushing in the pre-drying stage, high-humidity and easily-caked initial materials can be efficiently treated, and the problems that traditional equipment is prone to material blockage and uneven in drying are solved.