Graphite
Metallurgical coke or graphite is usually a solid carbonaceous material that is used as the main source of carbon in metallurgical processes. This material is usually produced from coal or petroleum coke. The process of producing metallurgical coke is known as coking or carbonization. In the coking process, coal or petroleum coke is converted to graphite under high temperatures and in the presence of specific gases such as hydrogen. Coke is used as a stable material with a high carbon composition, and it is used to reduce metal oxide minerals such as iron in various metallurgical processes.
The use of metallurgical coke in various processes such as the production of steel, cast iron, and other metallurgical processes is done to produce metals with higher quality and economic efficiency. The most unique feature of this material can be mentioned as the construction of anodes and the smelting of alumina to aluminum. Graphite is divided into 3 categories: high-sulfur graphite, low-sulfur graphite, and oily graphite, which are offered in different sizes according to the type of application and use. For more information about casting raw materials, please visit this page.
Types of Graphite
High-Sulfur Graphite
Metallurgical coke or high-sulfur graphite refers to graphite that contains high amounts of sulfur. Metallurgical coke is one of the materials used in industrial metallurgical processes for the production of steel, aluminum, ferrous metals, and other metals. Sulfur is one of the alloying elements that can have various effects on the properties of metals.
High-sulfur graphite is usually used in various metallurgical processes. For example, in the process of producing steel from electric arc furnaces (EAF), coke with high sulfur content may cause problems. Sulfur can negatively affect the mechanical and physical properties of steel as a pollutant. Also, in processes such as aluminum production, sulfur can have polluting effects that can affect the final quality of the product.
However, managing sulfur levels in metallurgical materials and using appropriate coke can improve the quality of final products and reduce the problems resulting from it. This is usually done through controlling and managing production processes and selecting the materials used.
Low-Sulfur Graphite
Low-sulfur graphite refers to coke that contains lower amounts of sulfur. In industrial metallurgical processes, such as the production of steel and aluminum, the use of low-sulfur metallurgical coke can have advantages. Sulfur is one of the alloying elements that can have destructive effects in metallurgical processes, especially if its amount in the final product increases significantly. For example, sulfur can affect the mechanical and physical properties of steel and can affect the final quality of various products.
Therefore, the use of low-sulfur graphite can help reduce the amount of sulfur in metallurgical processes, and as a result, lead to improving the quality and characteristics of final products. In general, the management of sulfur amounts in metallurgical materials is of particular importance, and its precise control can help improve the efficiency and quality of metallurgical processes.
Oily Graphite
Oily graphite refers to materials that turn into a liquid (oily) form under conditions of high temperature and pressure. Under very high temperatures and significant pressures, oily graphite can form. In these conditions, the carbon atoms that form the structure of graphite, due to increased temperature and pressure, are able to move and change shape and become liquid and turn into oily graphite.
The use of graphite in the steel and cast iron production industries is the most popular. Carbon, as a basic element, is an inseparable part of the structure of steel and cast iron. However, by changing the percentage of carbon in molten cast iron and steel, different properties and characteristics are created in these materials. The use of oily graphite is also very widespread in the metallurgical industry. Some of which include:
- Increasing the hardness of steel by adding graphite
- Production of industrial metallurgical electrodes by pressing petroleum coke
Application of Graphite
Graphite is a main source of carbon in metallurgical processes and is used in various industries including the production of steel, aluminum, ferroalloys and other metals. Here are a few main applications of graphite (metallurgical coke):
1. Steel Production:
In the steelmaking industry and casting, metallurgical coke is used as a source of carbon. In the process of reducing iron oxide to steel, coke acts as a fuel and a source of carbon. Also, to increase the hardness of steel, graphite is added to the melt.
2. Aluminum Production:
In the aluminum production industry, metallurgical coke is also used as a source of carbon in the electrolysis process. Here, aluminum is obtained from aluminum oxide using carbon from coke.
3. Ferroalloy Production:
In the production processes of ferroalloys, metallurgical coke is used to add carbon to alloys and improve their physical and mechanical properties.
4. Metal Industries:
In many metal industries such as the production of nickel, chromium, and copper, metallurgical coke is used as a reducing agent.
The use of metallurgical coke is very common due to its suitable properties, including thermal stability and resistance to harsh conditions of metallurgical processes, production of industrial metallurgical electrodes by pressing petroleum coke, and reduction of steel and metal oxides using carbon oxidation in the form of metallurgical coke and thermal coal.
Related article: Pure Metals
Features of Graphite
Graphite has special features that make it suitable for use in metallurgical processes. Some of the important features of metallurgical coke are:
1. Thermal Resistance: Metallurgical coke has very high thermal resistance, which allows it to be used at high temperatures, especially in metallurgical processes.
2. Chemical Stability: Metallurgical coke has relatively good stability when exposed to common chemical reactions in metallurgical processes such as oxygen and carbon dioxide.
3. Contains Carbon: One of the main features of metallurgical coke is that it contains carbon. This carbon is used as the main source for reducing oxides to metals in metallurgical processes.
4. Layered Structure: Metallurgical coke often has a layered structure that allows it to perform well in electrical processes such as aluminum electrolysis.
5. Thermal and Electrical Conductivity: Metallurgical coke has good thermal and electrical conductivity, which is very important in electrical metallurgical processes.
6. Lightweight: Due to its lightness and small volume compared to its weight, metallurgical coke increases its ease of transportation.
7. Production of Refractory Coatings: Graphite is used to make graphite casting coatings.
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Analysis of Graphite in Different Sizes
Moisture | % P | % S | % VM | % Alsh | % C | Size (mm) |
Max 7 | Max 0.3 | Max 1 | Max 4 | 20-25 | 70-75 |
0-1 0-3 0-5 |
Max 7 | Max 0.3 | Max 1 | Max 4 | 15-20 | 70-80 | 0-10 |
Max 5 | Max 0.3 | Max 1 | Max 3 | 12-14 | 82-85 |
5-15 10-20 20-30 10-30 |
Max 4 | Max 0.3 | Max 1 | Max 3 | Max12 | Min 84 | +30 |
Price of Graphite
The graphite or coke produced in factories is granulated and used in metallurgical industries such as metal smelting, ferroalloy industries, and blast furnace industries. Coke is used in blast furnaces to reduce iron ore, provide energy, and in other furnaces as a reducing agent and fuel. The price of metallurgical coke is directly related to its quality. The quality of graphite also depends on how it is produced, and the raw materials for producing graphite also depend on its quality and purity. Factors such as moisture content, coal density, and weathering affect the quality of the graphite produced. The grade and purity percentage of graphite have a significant impact on its price. Graphite or metallurgical coke in Avangard Holding is produced from the best and highest quality coke. You can buy from Avangard store according to your needs. To inquire about the price list of the graphite you want in terms of the type of graphite and its size, contact the sales experts at Avangard Holding.
Row | Description | Price |
1 | Price of High-Sulfur Graphite | Contact Us |
2 | Price of Low-Sulfur Graphite | Contact Us |
3 | Price of Oily Graphite | Contact Us |
Buying Graphite
The sale, supply, and export of metallurgical coke and graphite, in all grades and granulations with the requested analyzes of esteemed customers, are among the commercial activities of Avangard Company. Metallurgical coke in this company is available in all sizes and granulations in both packaged and bulk forms. To buy and order graphite, contact the sales experts in Avangard Holding.