Selection Guide for Solid-State Electrolyte Air-Stream Milling Machines

Sulfide solid electrolytes exhibit strong alkalinity, are water-soluble, and are highly sensitive to moisture and oxygen, placing stringent demands on equipment during the pulverization process. Drawing on nearly three decades of technical expertise accumulated by Sichuan Juzi Powder Equipment Co., Ltd., this paper presents a systematic selection guide and a series of customer case studies to help enterprises precisely match their needs with an appropriate air-classification milling solution.

I. Core Process Requirements for Solid-Electrolyte Crushing

-  Particle size distribution: D50=3-8 mu m Adjustable, narrow distribution, and good uniformity.

-  Moisture Control: Internal Moisture of the Equipment <30ppm , in conjunction with a vacuum dryer

-  Magnetic Foreign Bodies: Increment <10ppb

-  Purity Assurance: No burrs or weld spatter on the inner wall of the pipeline; inert gas shielding.

-  Processing capacity: 5-10kg/ Batch

II. Applicable Models: Inert Gas-Protected Air-Jet Mill (Closed System)

This model features a fully sealed system that uses nitrogen or argon as the grinding medium, integrated with an oxygen-content analyzer, a cooler, a closed-loop feeding system, and an antistatic dust collector to form a closed-loop circulation system. This ensures complete isolation of the material from water and oxygen throughout the entire process, making it the preferred solution for pulverizing sulfide electrolytes.

III. Five Key Parameters for Selection

1.  Processing capacity matching: 5-10kg It is recommended to use laboratory-grade or pilot-scale equipment (such as JZDB-100 ), with production capacity reserved 20%-30% Elasticity.

2.  Moisture and Sealing: Fully Sealed System + High-efficiency dewatering machine, system moisture <30ppm , high-grade sealing for flanges and valves.

3.  Grading wheel and particle size: zirconia is used. / Alumina ceramic grading wheel with a vertical turbine structure, featuring variable-frequency speed control. D50=2~15 mu m Precise control.

4.  Anti-contamination design: full-flow-channel ceramic lining (zirconia, alumina, etc.), mirror-polished inner pipe walls free of burrs and weld spatter, and a host unit with no moving parts to minimize wear.

5.  Inert gas protection: Equipped with gas purity monitoring, a recirculation and recovery system, and explosion-proof design to ensure oxygen content. <100ppm。

IV. Customer Case: Sulfide Solid-State Electrolyte Pulverization Project

Requirement: sulfide electrolytes (such as Li Six PS Five Cl ) The block material is crushed to D50=2-8 mu m , processing capacity 5-15kg/ Batch, meeting the requirements for moisture content, magnetic foreign matter, and purity.

Solution (Sichuan Juzi JZDB-100 Inert gas–protected air-classification pulverization system):

-  Host: JZDB-100 Closed circulatory system

-  Grinding medium: high-purity nitrogen / Argon

-  Grading wheel material: zirconia ceramic

-  Liner material: alumina ceramic with full flow passage

-  Auxiliary equipment: high-efficiency desiccant dryer, oxygen concentration monitor

-  Control: Programmable Logic Controller Fully automatic, with variable-frequency speed control for the grading wheel.

Actual measured results:

- D50 : Required value 2-8 mu m , measured value 1.8–8.2 mu m (Narrow distribution)

-  Moisture: Required Value <30ppm , measured value ≤ 25ppm

-  Increase in magnetic foreign objects: required value <10ppb , measured value ≤ 6ppb

-  Inner pipe wall: Requirements stipulate no burrs or weld spatter; measured values must show mirror-like polish.

-  Airtightness: The requirement is for isolation from air; the measured oxygen content <100ppm

Customer feedback: The equipment operates stably, with uniform particle size and no agglomeration; magnetic foreign-material control is excellent, effectively preventing hydrolysis and oxidation of the material.

V. Core Advantages of Sichuan Juzi

-  Technical Origins: Derived from the China Aerodynamics Research and Development Center, 1996 Founded in [year], our products are exported far and wide. 38 Country.

-  End-to-end contamination prevention: full-channel ceramic lining, with burr-free and slag-free piping.

-  Inert Gas Protection System: Moisture <30ppm , oxygen content <100ppm。

-  Intelligent Control: Programmable Logic Controller Automatic control, D50 In 2 to 15 mu m Precisely adjustable.

-  Test platform: Supports incoming-material testing and data-driven selection. Patent certificate number for this model selection: No. 14517324

VI. Qualifications and Honors

Sichuan Juzi holds independent patents. 52 The company is a national high-tech enterprise and a specialized, refined, distinctive, and innovative enterprise, having passed ISO 9001:2015 Certification.

VII. Conclusion

The selection of a gas-stream pulverizer for sulfide electrolytes must be closely aligned with the material’s properties, with a fully enclosed system, inert-gas protection, and stringent contamination-control design as the core requirements. Sichuan Juzi offers a one-stop solution spanning equipment selection to process commissioning; please contact us for feed-material testing.