The quality and consistency of electrode paste are largely dependent on the raw material and manufacturing process. To ensure high-quality products, it's important to choose graphite electrodes that adhere to strict standards. A company should offer technical support and guidance during the entire buying process, in addition to strict quality assurance measures.
The production of electrode paste is a complex process that involves several steps, including mixing, kneading, extrusion, baking, and crushing. Each step has its own set of challenges that must be addressed to produce a quality product. The temperature and time of kneading are important factors affecting the paste's chemical and physical properties. The optimal kneading temperature and time will ensure that the raw material is mixed and distributed evenly, resulting a smooth and uniform paste. The kneading method can also have a significant impact on the thermal stability of electrode pastes, as well as the development and maintenance of optimum microstructures that are critical to electrical conductivity. A kneading process that is too intense can cause air to be trapped, which can negatively impact the performance of the paste.
Pretreatment is done on the raw materials before mixing and kneading. These processes involve the selection of massive residue poles, crushing and dry metallurgical coal powder, and melting-dehydration of coal pitches. Once these raw materials have been pretreated, they are required to undergo calcination, which is a high-temperature heating treatment that improves their performance.
During calcination of the carbon, the particles must be crushed or sieved for different particle sizes. This is important because the size has a big impact on technical indicators for the electrode paste. If the particles are too big, they won't easily blend together, which can lead to delamination. If the particles are too large, they may not form a strong connection with the binder, and can break easily when used.
Standard electrode paste is used by many industries due its versatility and affordability. The obturation-type paste is designed for containment, and is used primarily in sensitive processes.
The global market for electrolyte paste is expected continue to grow, as the demand for high-quality electrode pastes is driven by the need for efficient metallurgical operations. The demand for innovative formulations of electrode pastes that are more functional and durable is also driven by stringent environmental regulations, and a desire not to rely on metal and mineral imports. The global COVID-19 outbreak was a major factor that slowed down the industry. However, it has since recovered to regain its pre-pandemic level. This is due primarily to the renewed interest in high-performance applications that require graphite. The recovery in North America is expected to accelerate due to its robust steel-and-aluminum industries.
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