What is a graphitized petroleum coke recarburizer?

Graphitization of petroleum coke is to put petroleum coke in a graphitization furnace, and after a high temperature of about 3000 degrees, the amorphous chaotic structure carbon crystal of petroleum coke is transformed into hexagonal layered structure crystalline carbon, that is, petroleum coke becomes graphite. This process is called graphitization, and the petroleum coke that has been treated through the graphitization process is called graphitized petroleum coke, commonly known as "graphitized coke". How to choose petroleum coke recarburizer?

For steel casting or EAF melting in the foundry industry, the core of the carburization technology is the use of low-sulfur, low-nitrogen, high-porosity carburizers. The main production areas of petroleum coke recarburizer are Liaoning, Tianjin, Shandong and other places. Among them, Liaohe Oilfield is the world's low-sulfur ** production area, so the sulfur content in petroleum coke is the lowest.

The porosity of the recarburizer also plays a vital role in the carburization effect and the absorption rate of the recarburizer, and the pores of the petroleum coke recarburizer are all opened through the production process, so that the specific surface area of the recarburizer is maximized, and the product has super permeability, which can be quickly dissolved into molten steel, so that the absorption rate is maximized and the carburization is efficient.

Petroleum coke is the waste residue in the petroleum refining process, graphitization is the process of petroleum coke into graphite after high temperature treatment, this process is petroleum coke energized and then after 3000 degrees of high temperature, so that the carbon molecular form of petroleum coke is transformed from irregular arrangement to hexagonal uniform arrangement, in this way the petroleum coke can be better decomposed in the molten iron, all the mainstream recarburizers on the market are graphitized petroleum coke recarburizers.

Graphitized petroleum coke.

There are three differences between calcined petroleum coke.

Mainly in the production process, use, and appearance.

Production process: Graphitization means that the internal structure of petroleum coke changes when it passes through a high temperature of about 3000 degrees, and the temperature of calcined petroleum coke is mainly controlled at about 1300 degrees.

Uses: Graphitized petroleum coke and calcined petroleum coke are mainly used in steel mill smelting and casting manufacturing industries, but graphitized petroleum coke has the advantages of low sulfur, low nitrogen and high carbon.

Appearance: From the appearance, calcined petroleum coke is irregular in shape, and the color of graphitized petroleum coke is darker and brighter, and the metallic luster is stronger.

Because the graphite recarburizer contains natural carbon minerals and has a good use after graphitization treatment, the graphite recarburizer is carefully screened by the manufacturer and recrystallized at high temperature, which has the characteristics of high carbon content and stable effect.

Therefore, graphitizing carburizer is widely used in the steelmaking process, which is embodied in purifying the cleanliness of molten steel, improving the quality of finished steel, and improving the profits of manufacturers.

The role of the carburizer is used in casting, cast iron, cast steel, castings will have a requirement for carbon, then the carburizer as the name suggests is to increase the carbon content in the molten iron.

In the smelting process of iron and steel products, the smelting loss of carbon in the molten iron often increases due to factors such as smelting time, holding time, and long overheating time, resulting in a decrease in the carbon content of the molten iron, resulting in the carbon content in the molten iron not reaching the theoretical value expected by refining.

The carbon-containing substances added to make up for the carbon content burned during the steel smelting process are called carburizers.

There are many kinds of raw materials for carburizers, and the production processes are also different, including wood carbon, coal carbon, coke, graphite, etc., and there are many small types under various classifications. High-quality carburizer generally refers to graphitized carburizer, under high temperature conditions, the arrangement of carbon atoms is the microscopic form of graphite, so it is called graphitization.

Graphitization can reduce the content of impurities in the recarburizer, increase the carbon content of the recarburizer, and reduce the sulfur content. The use of carburizer in casting can greatly increase the amount of scrap steel, reduce the amount of pig iron or not use pig iron.

A carburizer is an additive used in steelmaking. It is an indispensable raw material for the production of high-quality steel. In addition, it is also a raw material for the production of electrode paste.

The use of graphite powder by pressing molding, the production of castings can greatly increase the amount of scrap steel, reduce the amount of pig iron or do not use pig iron, in the electric furnace smelting, the carburizer is placed in the middle, (put a part of the material in the furnace after the carburizer) to add the measurement is 1-3% of the metal amount. The characteristics of the recarburizer are that the carbon is absorbed well in the molten iron, and the slag is not returned, and the use of the recarburizer can greatly reduce the production cost of castings.

Ordinary forging coal is a kind of finely washed anthracite with low ash and low sulfur, which can be used as a carburizer after high-temperature calcination. This product is mainly produced in Ningxia and Inner Mongolia, and the carbon content is 90-93%. The fixed carbon content of general forging coal is high, the oxidation resistance is strong, and the content of harmful elements is low.

The product can be used as a reducing agent in the smelting process, as a carburizer in the electric arc furnace steelmaking process, and can also be used in the smelting process, special steel steelmaking and ductile iron casting carburization. Ordinary forging coal can replace petroleum coke recarburizer, effectively reduce enterprise costs and increase economic benefits. The size and specification of the product particles are different, and customized processing can be carried out according to customer needs.

The production process of the product includes room temperature drying of anthracite after washing, high-temperature calcination in the calciner, removal of volatiles, etc., and finally crushing, screening and packaging.

Graphitized petroleum coke bureau blue belt carburizer manufacturers require qualified environmental protection and other procedures. There is a smart hand can continue to produce graphite tung reed petroleum coke recarburizer equipment.

The ** of graphitized petroleum coke recarburizer is related to its composition index. Right now in this market. The first grade of 1 ton of high-quality slag clearing section quietly graphitized petroleum coke carburizer has broken through the 10,000-burn imitation yuan mark.

There is a big difference in the market, ranging from a few hundred yuan to tens of thousands of tons.

Graphitized petroleum coke is the best recarburizer for smelting. In the steelmaking industry, to produce good steel, there must be good raw materials, including good carburizers, and graphitized petroleum coke is the best carburizer. In the past, in the domestic smelting industry, low-end non-graphitized carburizers were generally used, and with the improvement of product quality and the need for upgrading, the domestic use of graphitized coke will be more and more.

No. Petroleum coke is the raw material of the recarburizer Yanqi, and after petroleum coke is calcined at high temperature, the indicators tend to be pure and optimized in order to form a carburization precursor for industry.