How does a slurry filter work?

As the fluid goes through the filter, the pores become finer, removing ever smaller oversized particles. Because of the filter’s very sharp particle size cut-off, virtually all of the desired active slurry material is able to pass through the filter.

How do you filter slurries?

Filtration of slurries is not as straightforward as simply removing a small number of particles from a solution. When filtering slurries, filter selection is critical. The filter must allow the desired particles to pass through, while simultaneously retaining oversized particles.

What is a classifying filter in a slurry filtration process?

In the slurry filtration process, a filter with a sharp (classifying) cut-off will be required to stop the oversize particles and let the small size active ingredients pass through. The classifying filtration helps the slurry remove large particles while maintaining solid content.

Why do we need a depth filter cartridge for slurry filtration?

In addition, a depth filter cartridge with classifying rigid structure media is needed for slurry filtration to provide a multitude of filtration layers and resist pore size change due to applied pressure. The electrode slurry is expensive, especially cathode slurry due to the high cost of the active raw materials.

Why is Filter selection important in filtering slurries?

When filtering slurries, filter selection is critical. The filter must allow the desired particles to pass through, while simultaneously retaining oversized particles. This must be accomplished without plugging the filter and consequently shortening its service life.

How to optimize battery filtration system?

The filtration could be optimized with one filter with one micron rating, a filter with gradient pore size structure, or several filters with decreasing pore size from upstream to downstream of the coating die. The optimization of the filtration system depends on the particle size and size distribution of active battery particles.