一种基于DBD等离子体技术的高纯氧化锂连续生产系统
High-purity lithium oxide is generated by breaking the Li⁺-OH⁻ ionic bond at low temperature using DBD plasma technology, which solves the problems of high production cost and low purity of existing high-purity lithium oxide and realizes efficient and low-cost lithium oxide production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN UNION SHINE NEW ENERGY SCI TECH CO LTD
- Filing Date
- 2025-07-30
- Publication Date
- 2026-07-17
AI Technical Summary
Existing high-purity lithium oxide production processes suffer from high production costs, significant safety risks, and low product purity.
Using DBD plasma technology, lithium hydroxide is used as a dielectric layer on the lower electrode plate of the DBD plasma device. Through pulsed micro-discharge and high-energy electron impact, the Li⁺-OH⁻ ionic bonds are broken, resulting in low-temperature thermal decomposition to generate high-purity lithium oxide and discharge pollution-free gas.
This technology enables the generation of high-purity lithium oxide at lower temperatures and voltages, reducing production costs, improving product purity, simplifying the process, and avoiding the generation of lithium peroxide at high temperatures and the use of solvents and catalysts.
Smart Images
Figure CN224507080U_ABST
Abstract
Claims
1. A high-purity lithium oxide continuous production system based on DBD plasma technology, characterized in that, It includes a pneumatic crushing and screening device (1), which is connected to a dust removal and material collection device (4) via a pipeline. The dust removal and material collection device (4) is connected to a pretreatment rotary kiln (2) via a pipeline. The pretreatment rotary kiln (2) is connected to a temporary storage silo (8) via a pipeline. The temporary storage silo (8) is connected to a DBD plasma device (3) via a pipeline. The DBD plasma device (3) is connected to a finished product silo (14) via a pipeline.
2. The system for continuous production of high purity lithium oxide based on DBD plasma technology according to claim 1, characterized in that, The pneumatic crushing and screening device (1) includes a cylinder (104), a motor (101) is installed at the bottom of the cylinder (104), the output shaft of the motor (101) passes through the bottom of the cylinder (104) and is connected to a rotating disk (115), a number of crushing blades (109) are provided on the rotating disk (115), a number of first air inlet pipes (103) tangent to the cylinder (104) are provided on the outer wall of the cylinder (104), a first feed pipe (108) located above the first air inlet pipe (103) is provided on the cylinder (104), a connecting plate (107) is connected to the top of the cylinder (104), a first discharge pipe (106) is provided on the connecting plate (107), and a columnar filter screen (113) is connected to the first discharge pipe (106). 3.The DBD plasma technology-based continuous production system of high-purity lithium oxide according to claim 2, characterized in that, The connecting plate (107) is provided with an annular purge air pipe (105) sleeved on the outside of the first discharge pipe (106). The bottom of the connecting plate (107) is provided with an annular air curtain guide groove (112), which is connected to the annular purge air pipe (105) through several pipes. 4.The DBD plasma technology-based continuous production system of high-purity lithium oxide according to claim 1, characterized in that, The pretreatment rotary kiln (2) includes at least two supports (201), and a drum (202) is rotatably mounted on the supports (201). The two ends of the drum (202) are respectively rotatably sealed with a first end cap (210) and a second end cap (215). A heating chamber (221) is provided in the side wall of the drum (202). A hot liquid inlet pipe (212) is provided at the axis of the drum (202) and passes through the first end cap (210). A first connecting pipe (222) is connected between one end of the hot liquid inlet pipe (212) and the heating chamber (221). A jacket (211) is fitted on the hot liquid inlet pipe (212). A second connecting pipe (224) is connected between the jacket (211) and the heating chamber (221). The jacket (211) passes through the first end cap (210) and is connected to a hot liquid outlet pipe (213).
5. The system for continuous production of high purity lithium oxide based on DBD plasma technology according to claim 4, characterized in that, The second end cap (215) is provided with a second inlet pipe (218) for conveying thermal inert gas, and the first end cap (210) is provided with an outlet pipe (208), and a first water vapor sensor (207) is provided in the outlet pipe (208).
6. The system for continuous production of high purity lithium oxide based on DBD plasma technology according to claim 4, characterized in that, The inner wall of the roller (202) is provided with several tipping plates (220) and several rotating baffles (219). 7.The DBD plasma technology-based continuous production system of high-purity lithium oxide according to claim 1, wherein, The DBD plasma device (3) includes a hollow shell (303), in which a lower electrode plate (322) and an upper electrode plate (323) are arranged in parallel and spaced apart. A lifting support (309) is provided on the hollow shell (303), and a screw lifting drive mechanism (310) is installed on the lifting support (309). The screw lifting drive mechanism (310) is connected to a hollow screw (311) that is movably sealed and penetrates the hollow shell (303). The upper electrode plate (323) is hollow and communicates with the hollow screw (311). The upper end of the hollow screw (311) is rotatably connected to a first rotary pipe joint (320), and a first coolant delivery pipe (321) is provided on the first rotary pipe joint (320). 8.The DBD plasma technology-based continuous production system of high-purity lithium oxide according to claim 7, characterized in that, The hollow shell (303) is connected to a support frame (304), and the lower electrode plate (322) is connected to a hollow connecting rod (325) that rotates and seals through the hollow shell (303). A pulley (302) is fixedly sleeved on the hollow connecting rod (325). A pulley motor (301) is provided on the support frame (304). The pulley motor (301) is connected to the pulley (302) via a belt. The lower end of the hollow connecting rod (325) is rotatably connected to a second rotary pipe joint (316). A hot oil conveying pipe (317) is provided on the second rotary pipe joint (316). The lower electrode plate (322) is a hollow structure and is connected to the hollow connecting rod (325). 9.The DBD plasma technology-based continuous production system of high-purity lithium oxide according to claim 8, characterized in that, The hollow shell (303) has a movable seal through its side wall, through which a screw feeding tube (305) and a screw suction tube (306) extend into the lower electrode plate (322). The screw feeding tube (305) and the screw suction tube (306) are connected to a screw retraction drive mechanism (307) for driving the screw feeding tube (305) and the screw suction tube (306) to move and fixed on the support frame (304). 10.The DBD plasma technology-based continuous production system of high-purity lithium oxide according to claim 7, wherein, An inert gas chamber (318) is provided on the hollow shell (303), and an inert gas delivery pipe (319) is connected to the inert gas chamber (318). An arc-shaped gas outlet (324) communicating with the inert gas chamber (318) is provided on the inner wall of the hollow shell (303). The arc-shaped gas outlet (324) is located below the lower electrode plate (322). A negative pressure suction pipe (313) located above the upper electrode plate (323) is connected to the hollow shell (303). A second water vapor sensor (312) is provided in the negative pressure suction pipe (313).