Application Case of PMD Permanent Magnet Direct Drive Intelligent European Trapezium Mill: Helping Set a New Benchmark for Bentonite Powder Grinding
At present, the non metallic mineral industry is undergoing comprehensive upgrading toward refinement and low carbon development. Segmented sectors featuring complex material properties and high processing difficulty impose stringent requirements on the adaptability and stability of grinding equipment. Special purpose powder making equipment with multi material compatibility, high energy efficiency, intelligence and reliability serves as a core enabler for powder processing enterprises to break through capacity bottlenecks, improve quality while cutting costs, and build differentiated market competitiveness.
PMD Permanent Magnet Direct Drive Intelligent European Trapezium Mill
PMD Permanent Magnet Direct Drive Intelligent European Trapezium Mill is the first pendulum pulverizer equipped with a permanent magnet direct drive motor, realizing the in-depth integration of power system and intelligent control. The permanent magnet direct drive technology delivers stronger and more stable power output for the pulverizer, greatly enhancing transmission system reliability and lowering system power rating. It delivers higher grinding efficiency, lower system energy consumption and longer service life, fully satisfying large scale, high quality and low carbon powder making requirements for various non-metallic minerals.

15 % Energy Saving via Permanent Magnet Direct Drive
Featuring stronger, more stable power and high reliability, the permanent magnet direct drive motor delivers an overall energy saving of 15%.
On-line Lubrication for Continuous Operation
Equipped with an intelligent lubrication system, it enables on-line lubrication for the classifier, main unit and all motors, supporting non-stop operation.
New type Classifier with High Powder selecting Efficiency
The new structure classifier boasts superior sealing performance and high airflow velocity, achieving high efficiency and accuracy in powder classification.
High performance Fan with 10 % Energy Saving
Fitted with a new high performance fan, the system gains 15 % improvement in aerodynamic efficiency and saves 8-10 % electric power compared with conventional fans.
Condition Monitoring for Stable Finished Powder Quality
Multi point condition monitoring provides early warning alerts. Stable operation ensures superior finished powder quality and strengthens market competitiveness.
Remote Control via Mobile APP
Built-in intelligent control system conducts real time data acquisition and analysis to realize remote control through mobile APP.
The partner in this cooperation is a large scale non metallic mineral processing enterprise with long term dedication to intensive mineral deep processing. The enterprise decided to independently build a supporting production line for bentonite deep processing. Considering the material properties of bentonite such as easy wall adhesion and moisture susceptibility, LM Heavy Industry’s PMD Permanent Magnet Direct Drive Intelligent European Trapezium Mill was finally selected as the core grinding equipment to construct an integrated intelligent deep processing production line for bentonite.

Material Processed: Bentonite
Equipment: PMD185 PMD Permanent Magnet Direct Drive Intelligent European Trapezium Mill


The whole production line features compact spatial layout and well organized equipment arrangement. Every process including pre-treatment, drying, grinding and classification connects smoothly with high efficiency workflow. Boasting a high level of process automation, it ensures efficient, energy saving, eco-friendly and stable mass production of bentonite products.


Precisely Matched for Diverse Application Scenarios
Bentonite powder finely processed by the PMD Permanent Magnet Direct Drive Intelligent European Trapezium Mill achieves remarkable improvement in finished whiteness and purity. Key physico chemical properties including adsorption capacity, dispersibility and bonding performance are comprehensively optimized. With adjustable fineness ranging from 12-400 mesh, the equipment can be flexibly tuned to meet quality standards of chemical, drilling, feed and other industries, realizing efficient and high value utilization of bentonite mineral resources.
Below 200 Mesh
Mainly applied as feed additive and pellet feed binder to enhance pellet forming rate and stability. It can also serve as thickener and suspending agent in the chemical industry.
200 Mesh-325 Mesh
Widely adopted in drilling mud systems to improve mud viscosity and well wall protection performance. It is also suitable for coatings, ceramics, foundry and other industries.
Above 325 Mesh
Primarily used in high end chemical, cosmetic and pharmaceutical sectors for thickening, suspending and adsorption functions. Higher fineness enables fuller performance of its functional properties.
The practical implementation of this bentonite powder making project further validates the technical strengths of the PMD Permanent Magnet Direct Drive Intelligent European Trapezium Mill in material adaptability, energy conservation & consumption reduction, intelligent operation and maintenance, setting a new benchmark for the high value utilization of bentonite.
Going forward, Liming Heavy Industry will continue to drive product upgrading through technological innovation, and deliver more reliable, efficient and eco-friendly grinding solutions for powder processing enterprises worldwide.
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