High Purity Synthetic & Flake Graphite Powder Factory, 99.99% Carbon, Custom Mesh Size, For Lithium Battery Anode, Semiconductor, PV, Lubrication, Bulk Supply

The product, with its unparalleled purity, precise particle size control and excellent electrical and thermal conductivity, is widely applicable to four core fields: lithium-ion battery anode, semiconductor manufacturing, solar photovoltaic thermal field and industrial lubrication. It fully complies with international standards such as ISO 9001:2015, RoHS and REACH. It has passed third-party authoritative testing by SGS and is the preferred raw material supplier for global high-end manufacturing industries.

Key highlights of the factory's core processes:
Purity control: Utilize the "chemical purification + high-temperature vacuum purification" dual process to maintain the carbon content at over 99.99%, ash content ≤ 50 ppm, and individual metal impurities (Fe, Ni, Cu) ≤ 1 ppm, meeting the requirements of semiconductor-level cleanliness;
Customized mesh size: Supports any specification from 32 mesh (500 μm) to 5000 mesh (2.5 μm), with a narrow particle size distribution (D90/D10 ≤ 3). It can precisely control the D50 value (1-60 μm) according to customer DXF drawings or performance requirements, and is suitable for the process requirements of different application scenarios;
Batch production guarantee: Has 3 automated production lines, equipped with core equipment such as precision air flow pulverizers, laser particle size analyzers, and ICP-MS impurity detection instruments. The annual production capacity is 6,000 tons, with a 80% coverage rate for regular specifications in inventory, and the delivery cycle for batch orders is 15-30 days;
Surface modification options: Provide customized services such as carbon coating, oxidation modification, and SiC coating to enhance the compatibility of the product in lithium battery electrolytes, corrosion resistance in semiconductor processes, and wear resistance in lubrication scenarios.

Core working principle and technology compatibility
Conductive principle: The layered crystal structure of graphite allows electrons to move freely, with 99.99% high purity reducing the obstruction of impurities on electron transmission. The volume resistivity of synthetic graphite powder is as low as 10⁻¹² μΩ·m, and the in-plane electrical conductivity of flake graphite powder is ≥ 800 S/cm, ensuring efficient conductive efficiency in batteries and semiconductors;
Lubrication principle: The interlayer van der Waals force of natural flake graphite is relatively weak, and it is prone to relative sliding under force, forming a stable lubricating film. The friction coefficient is as low as 0.05-0.1. It can still maintain excellent lubrication effect under high temperature (≤ 600°C) and high pressure conditions;
High-temperature stability principle: Graphite can work stably at temperatures above 3000°C in an inert atmosphere. The thermal expansion coefficient is only 2.0-3.5 × 10⁻⁶/°C, which meets the thermal field requirements of high-temperature processes such as photovoltaic silicon crystal growth furnaces and semiconductor wafer annealing.

Key Features
1. Ultra-high purity and cleanliness
Fixed carbon content: Ash content ≤ 50 ppm, total impurity content < 100 ppm. Semiconductor-grade products can be upgraded to 99.999% (5N) purity, meeting the strict requirements of the third-generation semiconductor (SiC/GaN) manufacturing;
Low gas emission rate: After high-temperature degassing at 2800°C, the gas emission rate in a vacuum environment is ≤ 1.0×10⁻⁷ Pa·m³/s·kg, avoiding contamination of semiconductor wafers or photovoltaic silicon ingots;
No pollutant residue: The production process uses ultra-pure water for cleaning, and is dried at 105°C before packaging, with moisture content ≤ 0.1%, no acid or alkali residue, meeting the cleanliness standards of lithium battery anode materials.

Customization and Batch Supply Advantages
Full-range Grid Customization: Any specification from 32 to 5000 mesh is adjustable, supporting multi-granularity mixed formulations to meet the gradient requirements of special processes;
Large-scale Capacity Guarantee: The daily output of a single production line reaches 20 tons. Bulk purchases (≥10 tons) can offer stepped discounts, with unit costs 15-20% lower than the industry average;
Flexible Packaging Solutions: Standard packaging is 25kg in size, with moisture-proof and static-proof aluminum foil bags. Support for 1-ton large packaging (ton bags) or customized packaging by customers. It is equipped with desiccants and anti-caking agents, with a shelf life of 12 months.