Mineral Introduction

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Graphite

Graphite
흑연 이미지

Importing country: Sri Lanka

Graphite is a crystalline allotrope of carbon composed of hundreds of stacked graphene layers. It occurs naturally and represents the most thermodynamically stable form of carbon under standard conditions. Graphite exhibits excellent thermal stability, a low coefficient of thermal expansion, and outstanding electrical conductivity.

Applications:
- Electronics: Used in wafers, heat treatment, and heat sinks for high-temperature stability and conductivity. - Continuous Casting: Controls metal flow and acts as a mold for copper alloys, precious metals, and cast iron. - Aerospace: Used in engines, air conditioners, and fluid control parts. - Others: Found in pump bearings, seals, golf shafts, and pencil leads.

Results of Graphite Powder Analysis

Constituent Content % (w/w) Test Method
Volatiles0.22
Carbon93.40Gravimetry
Ash6.38
Ash Analysis
Silicon as SiO₂45.65Gravimetry
Total Iron as Fe₂O₃25.20
Aluminum as Al₂O₃8.04
Potassium as K₂O2.08Acid Digestion and AAS
Sodium as Na₂O2.84Acid Digestion and AAS
Calcium as CaO6.67Acid Digestion and AAS
Magnesium as MgO8.20Acid Digestion and AAS
Manganese as MnO0.16Acid Digestion and AAS
Phosphorus as P₂O₅0.36Acid Digestion and UV/VIS
Titanium as TiO₂0.78Acid Digestion and UV/VIS

Note :

The analysis was performed on the powdered sample dried at 105°–110°C.

Report reference: AL/23/97/GEN-44. Analysis performed by Geological Survey & Mines Bureau (Sri Lanka) between 15.06.2023 and 20.06.2023.

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