Zirconia_ARZ Ceramic Roller | Ceramic Double Rollers for Crushers

In the new energy lithium battery industry, metal contamination is a critical quality hazard in the grinding process of cathode and anode materials. Once iron chips or wear debris mix into the powder, it can, at the very least, cause battery capacity degradation and a shortened cycle life, or in severe cases, trigger safety risks such as internal short circuits. Under long-term rotational extrusion conditions, it is difficult to completely prevent traditional metal twin rollers from generating trace amounts of metallic wear debris due to surface wear.

 

Hunan Kingcera Engineering Co., Ltd., which has been deeply engaged in the field of structural ceramics for many years, independently developed and launched ARZ ceramic rolls to address the stringent requirements of fine grinding for lithium battery materials. Serving as the core working components of equipment such as twin-roll crushers and roller presses, the ARZ material innovatively integrates the high hardness of alumina ceramics with the toughening advantages of zirconia ceramics, ensuring high wear resistance while also possessing excellent impact toughness. When used in roller pressing and crushing equipment, it not only withstands the test of long-term rotational extrusion but also effectively reduces the generation of metallic wear debris during the grinding process, thereby mitigating the risk of metal contamination from the source.

 

The ARZ ceramic roll adopts a composite structure of a “steel mandrel + ceramic ring,” combining the wear resistance of ceramics with the structural strength of metal:

 

Ceramic Ring: Made from high-purity ARZ powder, it is precisely machined following isostatic pressing and high-temperature sintering. The tolerance of the mating surface between the inner bore of the ceramic ring and the steel shaft is highly precise, ensuring excellent concentricity and assembly accuracy.

 

Steel Mandrel: Precision-machined from high-quality alloy steel, it provides reliable structural strength and ensures effective power transmission for the entire roll.

 

Fully Assembled Delivery: The molding and processing of the ceramic ring, the machining of the steel parts, and their mutual assembly are all completed in a one-stop process within Kingcera’s proprietary workshops. Core parameters such as fit tolerance, assembly stress, and concentricity are completely and autonomously controllable throughout the entire process. The product delivered to the client is a fully assembled, finished roll that can be directly installed and used upon arrival at the factory, eliminating the need for secondary assembly or debugging.

 

Relying on a unique material system and precision manufacturing processes, ARZ ceramic double-roller possess the following prominent advantages:

 

All working surfaces of the ceramic rolls are made of ARZ ceramic material, which is characterized by high hardness and stable chemical properties. During high-speed rotation and continuous extrusion, the surface wear of the roll is extremely low, substantially reducing the risk of metallic wear debris mixing into the cathode and anode materials, making it an optimal solution for achieving high-purity grinding of lithium battery materials.

 

Building upon the high hardness of alumina ceramics, the ARZ material introduces the phase transformation toughening mechanism of zirconia, resulting in fracture toughness superior to that of pure alumina ceramics. It can effectively resist both the long-term intermittent abrasion of powder particles and the impact of occasionally mixed-in hard, large particles; consequently, the ceramic ring exhibits stronger anti-fragmentation capabilities and a longer service life.

 

The wear-resistant lifespan of the ceramic roll surface is significantly longer than that of ordinary metal rolls (Note: the specific multiple depends on the operating conditions; please consult our technical team for details). Users can reduce the frequency of machine shutdowns for roll replacement, thereby lowering spare parts procurement and manual maintenance costs; comprehensive operation and maintenance expenses are effectively controlled, and equipment utilization rates are correspondingly enhanced.

 

From ceramic ring forming to steel part assembly, critical indicators such as fitting clearance, coaxiality, and dynamic balance are strictly controlled within the factory, ensuring that the twin rollers operate stably with minimal vibration and low noise under high-speed rotation conditions.

 

A full set of assembly and testing is completed upon product delivery, eliminating the need for users to perform their own assembly or adjustments. Upon arrival at the factory, it can be directly installed onto the crushing equipment and connected to the drive for immediate production; this convenient and efficient installation helps shorten the downtime for production line modifications.

 

ARZ ceramic rolls are widely applied in crushing and roller pressing equipment across the following fields:

Application Field	Typical Materials	Core Value
Lithium Battery Cathode Materials	Lithium iron phosphate, lithium cobalt oxide, ternary materials, etc.	Effectively reduces the risk of iron chip contamination during the roller pressing and crushing process.
Lithium Battery Anode Materials	Graphite, silicon-carbon anodes, etc.	Fine grinding helps ensure powder purity and battery safety.
Electronic and Photovoltaic Materials	Polysilicon, quartz powder, etc.	Meets the high-purity grinding demands of materials sensitive to metal contamination.
Chemicals and Pharmaceuticals	Various high-purity powders	Avoids metal contact, thereby helping to ensure product cleanliness.