Committed To Quality, Committed To You
In the field of lithium-ion battery manufacture, we have no tolerance for impurity in materials. Among all the conductive materials that are used in batteries, copper powder is one of the most important—its main application being as the electric conductor of anodes, conductive pastes, and special battery parts. Any defect or inconsistency in the quality of copper powder, be it the variation in particle size or contamination, may directly influence the quality of electrical conductivity and internal resistance, as well as long-term battery reliability. That is why it is a very important step in the process of metallic powder grading and elimination of contamination.
Copper plays a crucial role as the anode current collector material in lithium-ion batteries, thanks to its excellent conductivity and stability. Generally speaking, copper powder is used for:
Because copper directly influences current flow, even minor defects in powder quality can result in uneven coating, localized resistance, or, in extreme cases, internal short circuits.
There are several techniques for manufacturing copper powders, including:
The powder, after it is manufactured, goes through the process of drying and conditioning. The material might include, at this stage:
Before copper powder is approved for battery use, it must undergo precise grading and cleaning.
Battery-grade copper powder must meet tight specifications for particle size distribution (PSD) and purity. If there is no proper screening:
Screening acts as a quality control gateway, ensuring only usable material proceeds to downstream processes.
For dense, abrasive, and/or highly valuable materials such as copper powder, the performance of conventional separation systems may not meet the desired criteria. The SIVTEK SUPER GYRO SEPARATOR® is specifically engineered to handle such demanding applications.
High-Energy Gyratory Motion
The high gyratory vibration can be used to guarantee that the heavy copper particles are effectively moved through the screen surface and avoid choking of the mesh, and enhance the separation efficiency.
Precise Particle Size Control
The process gives the manufacturers accurate cut points, thus allowing the manufacturers to keep the strict PSD requirements, which are very important for battery performance.
Efficient Contamination Removal
Oversized particles, metal flakes, and foreign contaminants are separated effectively, protecting downstream equipment and improving product consistency.
Rugged Construction for Abrasive Powders
The SIVTEK SUPER GYRO SEPARATOR® is designed to handle the abrasive characteristics of metal powders, which significantly increases its life expectancy.
Multi-Deck Classification Capability
When multiple size fractions are needed, the machine can classify copper powder into various grades in one pass.
Typically, copper powder screening occurs:
By positioning screening in these locations, only uniform and contamination-free copper powder is allowed to enter important battery manufacturing stages.
Well-graded copper powder brings about:
In the battery-making process, consistency of materials corresponds to consistency of performance.
Copper powder screening and decontamination have become indispensable in state-of-the-art battery manufacturing. With the implementation of advanced screening technology such as the SIVTEK SUPER GYRO SEPARATOR®, manufacturers can exercise meticulous control in terms of particle size, purity, and even flow rate. Not only does this protect the processes that follow, but it also guarantees the battery cells that possess no defects and have high performance. In an industry where quality margins are tight, effective metal powder screening is not just a process—it’s a competitive advantage.
