Boost Productivity with NETZSCH's Sulphur Plant Solutions

Importance of Sulphur in Agrochemicals

Sulphur plays a vital role in the production of agrochemicals. It is used both as a fertilizer and as a fungicide.

As a fertilizer, sulphur is an essential macronutrient that supports plant growth and improves crop yields.
As a fungicide, it is applied to control fungal diseases and protect plants effectively.

The finer the sulphur is ground, the faster and more efficiently it can be absorbed. This leads to better plant performance while reducing environmental impact.

The Sulphur Plant Process

The NETZSCH Sulphur Plant is designed as a modular system with clearly defined steps to ensure efficient production from start to finish:

Impact Mixing and Dispersing Sulphur Plant

The new process developed by NETZSCH makes it possible to start with relatively coarse sulphur lentils or granules of approx. 3-10 mm. The feed material used can be lumpy/hygroscopic type solids or coarse and porous type solids.

Crystalline
Flakes
Nibs
Granulates

Quality steps of the new impact mixing and dispersing process of Sulphur SC-formulation

Graph illustrating fineness progress during the phases of sulphur grinding, showing a decrease from 7500 µm to below 100 µm.

Graph illustrating specific energy consumption across various phases in the sulphur grinding process, highlighting efficiency.

Product after Impact Mixing and Dispersing

The feed material is mixed and dispersed in the liquid component using a special high speed dissolver with a new impact mixing and dispersing tool. After this process step, the particle size in the coarse suspension is approximately 1 mm to 2 mm.

Quality steps of the new impact mixing and dispersing process of Sulphur SC-formulation

Graph illustrating the fineness progress of sulphur during the grinding process phases, showing decreasing particle size.

Graph illustrating specific energy consumption across different process phases in sulphur grinding, indicating efficiency trends.

In the pre-grinding/pre-dispersing stage, with the NETZSCH ProPhi, a special type of pre-mill, coupled to the mixing process and running in the by-pass mode, the coarse suspension is pre-ground to a product fineness of d₉₀ = 30 µm to 45 µm.

The new pre-milling technology improves the dispersing process in such a way that all subsequent production steps benefit from it. The total pre-dispersion time is reduced by up to 50%.

Quality steps of the new impact mixing and dispersing process of Sulphur SC-formulation

Graph showing the fineness progress of sulphur grinding phases, illustrating particle size reduction during processing stages.

Graph illustrating specific energy use across different process phases in sulphur grinding. Optimizes energy efficiency in agrochemical production.

Compared to the conventional process, in which two mills are typically operated in series, the new NETZSCH process uses only one Discus agitator bead mill in the subsequent process step of wet fine grinding.

An optimized disc design in combination with a new intensive dynamic separation system ensures maximum throughput rates and a final fineness of the Sulphur suspension of d₅₀ < 2.5 µm.

Quality steps of the new impact mixing and dispersing process of Sulphur SC-formulation

Graph illustrating the fineness progression of sulphur during various processing phases, showcasing gradual particle size reduction.

Graph illustrating specific energy consumption during different process phases in sulphur grinding, highlighting efficiency in production.

Advantages of the Wet Grinding Process

A modern wet grinding process, combining a pre-mill (agitator bead mill) with subsequent fine grinding, offers significant advantages compared to conventional methods:

Higher product quality

More uniform particle sizes ensure consistent quality and effectiveness.

Lower energy consumption

An efficient process setup with fewer machines significantly reduces energy use.

Sulphur Plant

Importance of Sulphur in Agrochemicals

The Sulphur Plant Process

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Advantages of the Wet Grinding Process

Higher product quality

Lower energy consumption

Reduced dust emissions

Higher capacities

Flexible applications

Less cleaning and maintenance

Applications

Application Literature

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