Graphite (C) - Classifications, Properties & Applications

Author: Hou

Apr. 30, 2024

Graphite (C) - Classifications, Properties & Applications

For more information, please visit What is high purity graphite?.

Miriam Doerr Martin Frommherz / Shutterstock

Carbon is present in two natural crystalline allotropic forms—graphite and diamond—each with its own separate crystal structure and properties.

The term graphite is derived from the Greek word “graphein,” which means to write. The material is typically grayish-black in color, opaque, and has a radiant black sheen. Graphite is a distinct material as it displays the properties of both a metal and a non-metal.

Although graphite is flexible, it is not elastic and has high electrical and thermal conductivity. It is also chemically inert and highly refractory. Since graphite displays low adsorption of X-rays and neutrons, it is very valuable in nuclear applications.

This uncommon combination of properties is due to graphite’s crystalline structure. The carbon atoms are set hexagonally in a planar condensed ring system. The layers are stacked parallel to each other. The atoms within the rings are bonded covalently, while the layers are loosely linked together by van der Waals forces. Graphite has a high degree of anisotropy, which is caused by two types of bonding acting in different crystallographic directions.

For example, graphite’s ability to develop a solid film lubricant is the outcome of these two contrasting chemical bonds. As weak Van der Waals forces control the bonding between each layer, they can slide against one another, making graphite an ideal lubricant. In 2000, worldwide graphite production was estimated to be about 602,000 tons, with China as the largest producer followed by India, Mexico, Brazil, and the Czech Republic.

Graphite Classifications

Graphite can be divided into two main types—natural and synthetic.

Natural Graphite

Natural graphite is a mineral composed of graphitic carbon. It varies considerably in crystallinity. Most of the commercial (natural) graphites are mined, and typically contain other minerals. After graphite is mined, it usually requires a considerable amount of mineral processing like froth flotation to concentrate the graphite.

Natural graphite is an excellent conductor of heat and electricity, stable over a broad range of temperatures, and a highly refractory material with a high melting point of 3650 °C.

There are three types of natural graphite:

  • High crystalline
  • Amorphous
  • Flake

Crystalline Graphite

It is said that crystalline vein graphite came from crude oil deposits that have transformed into graphite through time, temperature, and pressure. Vein graphite fissures typically measure between 1 cm and 1 m in thickness and usually have a purity of more than 90%.

Although this type of graphite can be found globally, only Sri Lanka commercially mines it, using conventional shaft or surface mining techniques.

Amorphous Graphite

Amorphous graphite is the least graphitic among the natural graphites. However, the term “amorphous” is incorrect as the material is still crystalline. Amorphous graphite can be found as minute particles in beds of mesomorphic rocks such as coal, slate, or shale deposits. The graphite content varies from 25% to 85% according to the geological environment.

Conventional mining techniques are used to extract amorphous graphite, which occurs mainly in Mexico, North Korea, South Korea, and Austria.

Flake Graphite

Flake graphite can be found in metamorphic rocks evenly spread through the body of the ore or in concentrated lens-shaped pockets. The range of carbon concentrations varies from 5% to 40%. Graphite flake can be found as a lamella or scaly form in specific metamorphic rocks such as limestone, gneisses, and schists.

Froth flotation is used to extract flake graphite. “Floated” graphite has 80%–90% graphite content. Over 98% of flake graphite is made using chemical beneficiation processes. Flake graphite can be found in numerous places worldwide.

Synthetic Graphite

Synthetic graphite can be produced from coke and pitch. Although this graphite is not as crystalline as natural graphite, it is likely to have higher purity. There are basically two types of synthetic graphite. One is electrographite, pure carbon produced from coal tar pitch and calcined petroleum coke in an electric furnace. The second is synthetic graphite, produced by heating calcined petroleum pitch to 2800 °C.

Essentially, synthetic graphite has higher electrical resistance and porosity, and lower density. Its enhanced porosity makes it unsuitable for refractory applications.

Synthetic graphite contains mainly graphitic carbon that has been attained by graphitization, heat treatment of non-graphitic carbon, or chemical vapor deposition from hydrocarbons at temperatures over 2100 K.

Key Properties

Property Commercial graphite Bulk Density (g/cm3) 1.3-1.95 Porosity (%) 0.7-53 Modulus of Elasticity (GPa) 8-15 Compressive strength (MPa) 20-200 Flexural strength (MPa) 6.9-100 Coefficient of Thermal Expansion (x10-6 °C) 1.2-8.2 Thermal conductivity (W/m.K) 25-470 Specific heat capacity (J/kg.K) 710-830 Electrical resistivity (Ω.m) 5x10-6-30x10-6

Applications

Refractory Materials

On account of its high-temperature stability and chemical inertness, graphite is the perfect candidate for refractory material. It is used in the production of refractory bricks as well as “Mag-carbon” refractory bricks (Mg-C). In addition, graphite is used to produce crucibles, ladles, and molds for holding molten metals. Moreover, graphite is one of the most basic materials used in the production of functional refractories for the continuous casting of steel.

Here, graphite flake is mixed with alumina and zirconia, and then isostatically pressed to create components like stopper rods, subentry nozzles, and ladle shrouds used for regulating the flow of molten steel and also for safeguarding against oxidation. This type of material could also be used as protection for pyrometers.

In the production of iron, graphite blocks are used to produce a portion of the lining of the blast furnace. Their structural strength at high temperature, thermal shock resistance, high thermal conductivity, low thermal expansion, and good chemical resistance are highly important in this application.

The electrodes used in many electrical metallurgical furnaces are mass-produced from graphite, for instance, the electric arc furnaces used for processing steel.

Chemical Industry

In the chemical sector, graphite is employed in many high-temperature applications, like in the production of phosphorus and calcium carbide in arc furnaces. Graphite is used as an anode in specific aqueous electrolytic processes such as the production of halogens (chlorine and fluorine).

Nuclear Industry

Large amounts of high-purity electrographite are used for producing moderator rods and reflector components in nuclear reactors. The suitability of electrographite comes from its low absorption of neutrons, high thermal conductivity, and high strength at higher temperatures.

Electrical Applications

Graphite is mainly used as an electrical material in the manufacture of carbon brushes in electric motors. Here, the component’s service life and performance largely depend on grade and structure.

Mechanical Applications

Graphite is widely used as an engineering material across a variety of applications such as piston rings, thrust bearings, journal bearings, and vanes. Carbon-based seals are used in the fuel pumps and shafts of several aircraft jet engines.

Other Applications

Amorphous graphite is used in:

  • Metallurgy
  • Coatings
  • Lubricants
  • Refractories
  • Paint production
  • Pencil production

Areas where crystalline graphite can be used include:

  • Lubricants
  • Powder metallurgy
  • Grinding wheels
  • Batteries

Flake graphite is used in refractory applications, typically in secondary steelmaking. Apart from this, it may also be used in pencils, powder metallurgy, coatings, and lubricants.

Many of the sources of natural graphite are also used in the development of graphite foil.

Areas where synthetic graphites are used include:

  • Aerospace applications
  • Carbon brushes
  • Graphite electrodes for electric arc furnaces, for metallurgical processing
  • Moderator rods in nuclear power plants
  • Batteries

The higher level of porosity of synthetic graphite makes it unsuitable in refractory applications.

High Purity Graphite Market Size, Share Forecast

New Jersey, United States,-  High purity graphite refers to a specialized form of graphite with a purity level exceeding 99.9%. It is characterized by its exceptional thermal and electrical conductivity, chemical inertness, and high strength-to-weight ratio. Typically, it is produced through a meticulous purification process involving chemical treatment and thermal expansion, resulting in a material prized for its suitability in various high-performance applications. High purity graphite finds extensive usage in industries such as electronics, aerospace, automotive, and energy storage, where its unique properties are indispensable for manufacturing advanced components like electrodes, heat sinks, and crucibles.

Opportunities in the high purity graphite market are abundant, driven primarily by the increasing demand for lightweight, durable materials with superior conductivity characteristics. One significant opportunity lies in the burgeoning electric vehicle (EV) industry, where high purity graphite serves as a crucial component in lithium-ion batteries, essential for achieving greater energy density and longer battery life. Moreover, with the growing emphasis on renewable energy sources, there is a rising need for high purity graphite in applications like solar panels and fuel cells, where its exceptional conductivity facilitates efficient energy conversion. Additionally, emerging technologies such as 5G telecommunications and quantum computing are expected to further propel demand for high purity graphite due to its essential role in manufacturing high-frequency electronics and semiconductor devices.Segmentation of the high purity graphite market can be categorized based on application and end-use industry. Applications include electrodes, furnace linings, lubricants, and others, each catering to specific industrial requirements. End-use industries encompass electronics, aerospace, automotive, energy storage, and metallurgy, among others, with varying demands for high purity graphite based on their respective manufacturing processes and product specifications. This segmentation allows for targeted marketing strategies and product development initiatives to address the diverse needs of different market segments effectively.

Download Full PDF Sample Copy of High Purity Graphite Report @ https://www.verifiedmarketreports.com/download-sample/?rid=562618&utm_source=Pulse5&utm_medium=010

High Purity Graphite Market Size And Scope:

The High Purity Graphite Market is poised for substantial growth in the coming years, driven by several key strategies and factors. Market players are increasingly focusing on product innovation and development to meet evolving consumer demands and preferences. Expansion into emerging markets and strategic partnerships or collaborations are also pivotal strategies for market growth. Additionally, investments in research and development to enhance technological advancements and improve product quality play a vital role. Moreover, the market's future scope looks promising due to the rising adoption of digitalization and the integration of advanced technologies, which are anticipated to open new avenues for growth and innovation.

Top High Purity Graphite Market Companies:

  • Toyo Tanso
  • Tokai Carbon
  • Mersen
  • IBIDEN
  • SGL
  • NTC
  • Entegris (POCO)
  • Graphite India
  • GrafTech
  • Baofeng Five-star Graphite
  • Chengdu Carbon
  • Liaoning Dahua Glory Special Graphite
  • Hemsun

High Purity Graphite Market: Segmentation

To offer a holistic view of the High Purity Graphite Market, we employ a segmentation approach. We categorize the market into segments based on criteria such as product types, geographic regions, and consumer demographics.

Each segment is scrutinized to reveal specific trends, growth potential, and challenges. This segmented analysis empowers businesses to tailor their strategies to distinct market needs, enhancing their competitive edge. Our segmentation analysis is a strategic tool that guides market participants in navigating the complexities of the High Purity Graphite Market effectively.

Global High Purity Graphite Market by Type

  • 99.9-99.95%
  • Above 99.95%

Global High Purity Graphite Market by Application

  • Electric Motor Brushes
  • Photovoltaic Industry
  • Semiconductor & LED Industries
  • High Temperature Furnaces
  • Metal Industry

Further reading:
The Ultimate Guide to Choosing molded graphite materials manufacturer

The company is the world’s best graphite and graphene difference supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.

Get Discount On The Purchase Of This Report @ https://www.verifiedmarketreports.com/ask-for-discount/?rid=562618&utm_source=Pulse5&utm_medium=010

Reasons to Procure this Report:

(A) The research would help top administration/policymakers/professionals/product advancements/sales managers and stakeholders in this market in the following ways.

(B) The report provides High Purity Graphite market revenues at the worldwide, regional, and country levels with a complete analysis to 2028 permitting companies to analyze their market share and analyze projections, and find new markets to aim for.

(C) The research includes the High Purity Graphite market split by different types, applications, technologies, and end-uses. This segmentation helps leaders plan their products and finances based on the upcoming development rates of each segment.

(D) High Purity Graphite market analysis benefits investors by knowing the scope and position of the market giving them information on key drivers, challenges, restraints, and expansion chances of the market and moderate threats.

(E) This report would help to understand competition better with a detailed analysis and key strategies of their competitors and plan their position in the business.

(F) The study helps evaluate High Purity Graphite business predictions by region, key countries, and top companies' information to channel their investments.

Table of Contents:

1. Introduction of the High Purity Graphite Market

  • Overview of the Market
  • Scope of Report
  • Assumptions 

2. Executive Summary

3. Research Methodology of Verified Market Reports

  • Data Mining
  • Validation
  • Primary Interviews
  • List of Data Sources 

4. High Purity Graphite Market Outlook

  • Overview
  • Market Dynamics
  • Drivers
  • Restraints
  • Opportunities
  • Porters Five Force Model
  • Value Chain Analysis 

5. High Purity Graphite Market, By Product

6. High Purity Graphite Market, By Application

7. High Purity Graphite Market, By Geography

  • North America
  • Europe
  • Asia Pacific
  • Rest of the World 

8. High Purity Graphite Market Competitive Landscape

  • Overview
  • Company Market Ranking
  • Key Development Strategies 

9. Company Profiles

10. Appendix

For More Information or Query, Visit @ https://www.verifiedmarketreports.com/product/high-purity-graphite-market-size-and-forecast/

Frequently Asked Questions

1. What is the current size and growth potential of the High Purity Graphite Market?

Answer: High Purity Graphite Market is expected to growing at a CAGR of XX% from 2024 to 2031, from a valuation of USD XX Billion in 2023 to USD XX billion by 2031.

2. What are the major challenges faced by the High Purity Graphite Market?

Answer: High Purity Graphite Market face challenges such as intense competition, rapidly evolving technology, and the need to adapt to changing market demands.

3. Which Top companies are the leading Key players in the Industry?

Answer: template_keyplayers are the Major players in the High Purity Graphite Market.

4. Which market segments are included in the report on High Purity Graphite Market?

Answer: The High Purity Graphite Market is Segmented based on Type, Application, And Geography.

5. What factors are influencing the future trajectory of the High Purity Graphite Market?

Answer: Industries are predominantly shaped by technological advancements, consumer preferences, and regulatory changes.

About Us: Verified Market Reports

Verified Market Reports is a leading Global Research and Consulting firm servicing over 5000+ global clients. We provide advanced analytical research solutions while offering information-enriched research studies.

We also offer insights into strategic and growth analyses and data necessary to achieve corporate goals and critical revenue decisions.

Our 250 Analysts and SMEs offer a high level of expertise in data collection and governance using industrial techniques to collect and analyze data on more than 25,000 high-impact and niche markets. Our analysts are trained to combine modern data collection techniques, superior research methodology, expertise, and years of collective experience to produce informative and accurate research.

Contact us:

Mr. Edwyne Fernandes

US: +1 (302) 261 3143

Our Top Trending Reports

54

0

Comments

Please Join Us to post.

0/2000

All Comments ( 0 )

Guest Posts

If you are interested in sending in a Guest Blogger Submission,welcome to write for us!

Your Name: (required)

Your Email: (required)

Subject:

Your Message: (required)