Product Overview

Pyrite (FeS₂) high-purity concentrate is a tailor-made mineral precursor for the next-generation solid-state battery industry, specifically developed for the preparation of lithium sulfide (Li₂S), phosphorus pentasulfide (P₂S₅) and other sulfide electrolytes, as well as 99.9999% (6N-grade) high-purity sulfur. Based on natural high-grade pyrite ore, it is processed through precision purification, high-temperature roasting and ultra-fine grinding processes that comply with industrial standards (refer to GB/T29502-2013 and DZ/T0210—2002). With strictly controlled sulfur content (≥50%, close to the theoretical sulfur content of FeS₂ which is 53.45%), total impurities <0.5%, and ultra-fine particle size (-325 mesh, D50<10μm), it has excellent reaction activity and dispersion. As a cost-effective alternative to high-priced synthetic sulfur sources, it solves the core pain points of high raw material cost and unstable purity in sulfide electrolyte production, providing reliable and scalable raw material support for solid-state battery mass production — a key material to seize the next-generation new energy battery track.

Application Data & Strict Specifications (Based on Industrial Facts)

Core Advantages (Customer-Oriented, Factual & Attractive)

• High Purity & Stable Composition: S≥50% (high-purity concentrate) and total impurities <0.5%, ensuring the preparation of 99.9999% high-purity sulfur and high-performance Li₂S/P₂S₅ electrolytes, avoiding electrolyte performance degradation caused by impurities.
• Ultra-Fine Particle Size for High Efficiency: -325 mesh with D50<10μm, large specific surface area and uniform dispersion, which accelerates the thermal decomposition and reaction rate of pyrite, shortens the electrolyte synthesis cycle by 15%-20% compared with conventional particle size raw materials.
• Cost-Effective & Scalable: Natural mineral precursor, 30%-40% lower cost than synthetic sulfur sources; mature purification and grinding process, suitable for large-scale mass production, solving the cost bottleneck of sulfide electrolyte industrialization.
• Proven Industrial Feasibility: Adopts standard processing and testing methods, and the application process (pyrite thermal decomposition → H₂S reaction → Li₂S preparation) has been verified in industrial practice, with stable product quality and high conversion rate (≥98%).
• Future-Oriented Compatibility: Perfectly matches the production needs of sulfide solid electrolytes — the most promising electrolyte system for solid-state batteries (with high ionic conductivity and good processability), helping customers layout the next-generation new energy battery marketsuperscript:7).

Application Scenarios (Precise & Practical)

Widely used in the core raw material link of solid-state battery industry, including but not limited to:

• Preparation of 99.9999% (6N-grade) high-purity sulfur for solid-state battery electrolyte synthesis
• Synthesis of lithium sulfide (Li₂S) — the core lithium source precursor of sulfide solid electrolytes, accounting for over 60% of the electrolyte formula mass
• Production of phosphorus pentasulfide (P₂S₅) for the preparation of high-performance sulfide electrolytes
• Raw material for R&D and mass production of sulfide solid electrolytes in new energy battery enterprises and research institutions

FAQ

Q1: Why can pyrite be used as a precursor for solid-state battery Li₂S and sulfide electrolytes? A1: Pyrite (FeS₂) with S≥50% can be thermally decomposed to generate high-purity sulfur-containing gas (H₂S) under controllable conditions, which can efficiently react to prepare 99.9999% high-purity sulfur, Li₂S and P₂S₅ — core raw materials for sulfide electrolytes. Its stable composition and low impurities meet the strict requirements of solid-state battery materials, and it is cost-effective for large-scale production.

Q2: What is the significance of D50<10μm ultra-fine particle size? A2: D50<10μm (matched with -325 mesh) increases the specific surface area of pyrite, making it easier to decompose and react fully during electrolyte synthesis. It avoids uneven reaction caused by coarse particles, ensures stable purity of Li₂S and 6N-grade sulfur, and improves the ionic conductivity of the final electrolyte.

Q3: How does the impurity control (<0.5%) affect the solid-state battery performance? A3: Impurities such as SiO₂, Pb and As will damage the ionic conduction network of sulfide electrolytes, reduce ionic conductivity, and cause interface side reactions between the electrolyte and the electrode, leading to shortened battery cycle life. Our pyrite with total impurities <0.5% effectively avoids these problems, ensuring the electrolyte has high ionic conductivity and the battery has long cycle stability (refer to related solid-state battery research results)superscript:4).

Q4: Is this pyrite precursor cost-effective compared with synthetic sulfur sources? A4: Yes. As a natural high-purity mineral raw material, it is 30%-40% cheaper than synthetic sulfur sources. At the same time, its mature processing process reduces the production cost of Li₂S and sulfide electrolytes, which is the key to promoting the industrialization of solid-state batteries.

📦 Packaging & Storage

• Packaging: 20kg composite paper bags (with moisture-proof lining) for small batches, 1000kg bulk bags (with pallets) for large orders, both designed to prevent moisture and leakage during transportation.
• Storage: Keep in a dry and ventilated warehouse, avoid direct sunlight and rain. Do not store with strong acids or oxidants. The shelf life is 18 months when unopened; after opening, seal the remaining product promptly.

📞 Contact Us
Email: ​c32917930@gmail.com

Whatapp/Wechat/phone:+86 18006417081

Website: ​https://www.tlbncn.com/

Address:No. 402, Building 9, No. 2899, North Section, Tongdu Avenue, Xihu Town, Tongguan District, Tongling City,  Anhui Province