ZHENGSHAN TECHNOLOGY

Electrode paste is an indispensable material in many industrial applications, especially used as a conductive material in electric arc furnaces and resistance furnaces. The conductivity of electrode paste directly affects production efficiency and energy consumption. Therefore, improving the conductivity of electrode paste is a key concern for many enterprises. This article will explore several effective strategies to improve the conductivity of electrode paste.
1. Optimize the selection of raw materials
The conductivity of electrode paste largely depends on the quality of its raw materials. Here are several key raw material selection strategies:
1.1 Petroleum coke
Petroleum coke is one of the main components of electrode paste, and its conductivity directly affects the overall performance of the electrode paste. Choosing high-quality petroleum coke, especially those with low ash content, low sulfur content, and high fixed carbon content, can significantly improve the conductivity of electrode paste.
1.2 Asphalt
Asphalt is the binder for electrode paste, and its quality and quantity also have a significant impact on the conductivity of the electrode paste. Choosing asphalt with moderate softening point and low viscosity can improve the fluidity and wettability of electrode paste, thereby enhancing its conductivity.
1.3 Additives
Adding an appropriate amount of conductive additives, such as carbon black, graphite powder, etc., can effectively improve the conductivity of electrode paste. These additives can form more conductive pathways in the electrode paste, thereby reducing resistance.
2. Improve production processes
The improvement of production technology is also an important link in enhancing the conductivity of electrode paste. Here are several effective process improvement strategies:
2.1 Mixing temperature control
The mixing temperature has a significant impact on the conductivity of electrode paste. Appropriately increasing the mixing temperature can allow asphalt to better infiltrate petroleum coke, thereby improving the conductivity of electrode paste. However, it should be noted that high temperatures can cause asphalt to decompose, so it is necessary to find the optimal temperature range.
2.2 Compaction and Forming
During the compaction process, the magnitude and uniformity of pressure directly affect the density and conductivity of the electrode paste. The use of high-pressure compaction and multiple compaction methods can improve the density of electrode paste, thereby reducing resistance.
2.3 Heat treatment
Heat treatment is a crucial step in the production of electrode paste. Appropriate heat treatment temperature and time can promote the coking and graphitization of asphalt, thereby improving the conductivity of electrode paste. Generally speaking, the heat treatment temperature is controlled between 800-1200 ℃, and the specific temperature and time need to be adjusted according to the actual situation.
3. Strengthen quality control
Quality control is an important means to ensure the stable conductivity of electrode paste. Here are several effective quality control methods:
3.1 Raw material testing
Strictly inspect raw materials to ensure they meet quality standards. Especially monitor the quality of petroleum coke and asphalt to prevent unqualified raw materials from entering the production process.
3.2 Inspection of intermediate products
During the production process, regular inspections are conducted on intermediate products to ensure that the parameters of each process meet the requirements. For example, conducting conductivity tests on the mixed electrode paste to promptly identify and resolve quality issues.
3.3 Finished product testing
Before leaving the factory, the finished product undergoes comprehensive testing, including indicators such as conductivity and mechanical strength, to ensure that each batch of electricity