Conductive Additives and Battery Slurries

The majority of active materials are oxides with limited electrical conductivity. That is why additives that reduce the required charging time of the battery are added to the battery slurries. Here it is primarily the carbon-based raw materials that are used, such as carbon black, graphite and carbon nano tubes (CNT), which should be characterized by the highest possible aspect ratio.

The materials must first be carefully dispersed or delaminated in preliminary stages. Here the size of the primary particles, the properties of the bulk solids and the purity requirements usually present particular challenges, which NETZSCH solves with the Epsilon, Omega® and the s-Jet®.

Battery Slurries

PMH planetary mixers have established themselves as state of the art for the production of so-called battery slurries. Via the planetary mixer's rotating tool system, the conductive carbon black agglomerates can be broken up or active materials can be dry processed in an intensive kneading phase.

However, depending on the material system used, the binder can also be dissolved first and very gently mixed after addition of the active materials. To prevent defects in the coating due to gas inclusions, the mixing process is typically carried out under a vacuum. This way, pockets of air that have entered via the raw materials can be removed from the product.

The key aspects for selection of the PMH planetary mixer are the excellent temperature control and the broad viscosity range for which this machine is suited.

Wet Grinding

Products & Solutions in the field of Wet Grinding
Sistema de molienda Zeta® - antes LMZ

The Zeta® grinding system is, in every respect, a user friendly, low-maintenance and very reliable grinding system.


Successful dispersion requires targeted force in order to separate agglomerated particles. The Omega® Economic Disperser applies dispersive forces then and there, where they are especially effective: in the Omega® disperser body, energy is transformed into very high speeds under pressure.

Dry Grinding

Products & Solutions in the field of Dry Grinding
Molino Jet de lecho fluidizado CGS

La combinación de un molino jet y un clasificador dinámico por aire, da como resultado una perfecta molienda en vía seca. Es posible alcanzar y reproducir la finura final deseada dentro de unos límites exactos de tamaño de partícula. El desarrollo de los nuevos e-Jet® y s-Jet®, está abriendo nuevos campos de aplicación, hasta ahora vedados a la molienda por chorro de aire, por razones económicas o técnicas. Es aplicable para finuras desde 1 a 70 µm (d97).

Tamaños de máquinas disponibles para volúmenes de aire de molienda desde aprox. 50 a 12.000 Nm³/h.

s-Jet® Steam Jet Mill

El Sistema s-Jet® (pendiente de patente) es una innovación dentro de una línea de desarrollos en el campo de la molienda jet. Ahora con los molinos jets de lecho fluidizado es posible alcanzar finuras finales en el rango submicronico (p.ej:  d50 0,2 µm). Al contrario que en los procesos convencionales de molienda en vía seca con molinos jets, el Sistema s-Jet® utiliza vapor a elevadas temperaturas como gas de molienda.

Mixing and De-Aerating

Products & Solutions in the field of Mixing and De-Aerating
Mezcladores planetarios y máquinas de amasado PMH / PML

Los mezcladores planetarios y máquinas de amasado NETZSCH muestran su verdadera magnitud cuando se trata de dispersar productos difíciles y de extrema viscosidad. En particular, la dispersión de componentes en polvo muy fino y ligeros, se efectúa de manera muy rápida, utilizando las herramientas de mezcla adecuadas a estos productos, como los agitadores tipo travesaño y mariposa o varios discos de dispersión.

Epsilon Inline Disperser

With the Epsilon, NETZSCH offers a new, compact solution for producing homogeneous dispersionswith reproducible quality in an inline process. Here, the dispersion process takes place in an atmospherically sealed processing chamber and is thus dust and emission free.