Research on the Application of Petroleum Coke Calcination Dust Collection Powder in Electrode Paste Production
In modern metallurgy and chemical industries, electrode paste is an important conductive material widely used in electric furnace equipment such as ferroalloy furnaces and calcium carbide furnaces. Electrode paste not only needs to have good conductivity and high temperature resistance, but also needs to maintain stable mechanical strength in complex working environments. In recent years, with the increasing awareness of environmental protection and the promotion of comprehensive resource utilization, the research on the application of petroleum coke calcined dust powder in electrode paste production has gradually received attention.
1、 Characteristics of petroleum coke calcination dust collection powder
Petroleum coke is a by-product of the petrochemical industry, which is processed at high temperatures (generally exceeding 1200 ℃) in a calcination furnace to form forged coke. During the production process of forged coke, a large amount of high-temperature flue gas is generated, and the dust in this flue gas is mainly collected by a multi tube cyclone dust collector, forming petroleum coke calcination dust powder. Research has shown that this dust collection powder has a finer particle size, with most particles smaller than 0.074 millimeters, a higher true density, lower moisture content, sulfur content, and other indicators than oil coke. It also has a higher calorific value and abundant fixed carbon content, making it a high-quality carbon material raw material.
2、 Application of Petroleum Coke Calcination Dust Collection Powder in Electrode Paste Production
Introducing petroleum coke calcined dust powder as an additive into electrode paste production can not only effectively utilize this resource, but also improve the performance of electrode paste. Through a series of experiments, researchers found that with the increase of the proportion of dust collection powder added, the ash content of the electrode paste significantly decreased, while the volatile matter content increased. This change has a significant impact on the sintering performance and conductivity of electrode paste.
Further analysis shows that the electrical resistivity of the electrode paste does not change significantly in the initial stage, but gradually decreases with the increase of the amount of dust collection powder added. When the amount is excessive, the electrical resistivity actually increases. This may be due to the high fixed carbon content in the dust collection powder enhancing the conductivity of the electrode paste, but excessive addition may lead to poor contact between particles, affecting the overall conductivity performance.
At the same time, the bulk density and compressive strength of the electrode paste also showed a trend of increasing first and then decreasing. When the amount of dust collection powder added is about 15%, the overall performance of the electrode paste product reaches its optimum, exhibiting high mechanical strength and conductivity. This discovery provides important reference for the production of electrode paste.
3、 Technological innovation and environmental benefits
The application of petroleum coke calcined dust collection powder in electrode paste production not only improves the performance of electrode paste, but also realizes the comprehensive utilization of resources and reduces environmental pollution. The traditional method of processing coke dust powder after forging is mostly low-cost takeaway, which not only wastes resources but also may cause secondary environmental pollution during loading, unloading, and transportation. By introducing it into electrode paste production, not only does it solve the problem of dust collection powder processing, but it also increases the added value of electrode paste.
In addition, with the advancement of technology and the development of intelligent production technology, various process parameters in the electrode paste production process have been more accurately controlled. For example, optimizing the production process of electrode paste through modeling and simulation technology can reduce the layering phenomenon of coarse and fine particles in the electrode paste, improve the density and wear resistance of the product. The application of these technologies not only improves the production quality of electrode paste, but also reduces production costs, laying a solid foundation for the sustainable development of the electrode paste industry.
