Papua New Guinea CL-S1500 French Edition Grinder

Low vibration, high efficiency, high reliability
Compared with conventional domestic pendulum mills, output is increased by more than 10%, and energy consumption is reduced by over 6%.

The CL‑S1500 roller mill is a next‑generation grinding machine developed by our company, incorporating advanced structural technologies from French roller mills. Its main drive reducer is integrated with the main unit and mounted atop the machine’s housing, resulting in a compact, state‑of‑the‑art, and innovative design.

The French‑style mill consists of a main unit (grinding chamber), a classifier, a fan, a pneumatic conveying system, a finished‑powder collection system, and an automatic control system.

Working principle:

After the material is fed into the storage hopper, a feeder delivers it to the main mill in precise, uniform quantities for grinding. The ground powder is then conveyed by a high‑pressure, high‑flow air stream generated by the blower into the classifier located at the top of the main mill for separation. Particles that fail to meet the target fineness are recirculated back to the main mill for further grinding, while those that achieve the desired particle size are carried with the airflow into the cyclone collector for collection. Once collected, the finished powder is discharged via a screw conveyor for packaging. The purified exhaust gas flows through the cyclone collector’s ductwork back to the blower, and any leakage from the system is vented through the bypass duct between the blower and the main mill before being routed to a pulse‑jet baghouse and finally released to the atmosphere. The entire pneumatic conveying system operates as a closed loop, ensuring environmental compliance within the workshop.

Technical Advantages and Features:
1. The machine features a compact, state-of-the-art design—pioneering in China—and is ideally suited for grinding materials with high hardness (Mohs scale 8).
2. The host unit is installed on a level surface: the foundation is simple (without trenches), easy to pour, cost‑effective, with high strength and excellent rigidity, resulting in minimal operational vibration.
3. The host is easy to install and calibrate.
4. The main working component of the machine—the roller assembly—employs an advanced German‑designed, oil‑lubricated, air‑resistance‑type maintenance‑free roller assembly: it offers excellent sealing performance and low oil consumption, requiring lubricant replenishment only once every month or more; its structure ensures high reliability and delivers strong grinding force.
5. Novel scraper blade assembly: Featuring a unique structural design, it ensures more uniform material distribution and concentrated grinding between the grinding roller and grinding ring, maintaining stable, high grinding efficiency.
6. When replacing the wear‑resistant grinding ring, there is no need to disassemble components such as the plum‑blossom frame inside the main unit, making maintenance convenient.
7. The classifier and the main machine are connected via a hinged, clamping structure, facilitating disassembly and maintenance.
8. Adopted an overhead transmission system: The transmission system is positioned above the main machine’s housing, ensuring smooth operation, minimal vibration, and easy maintenance.
9. Intelligent Control: Automatic interlocked protection control of operating functions, one-button start/stop control via PLC, and DCS centralized control.
10. Compared with conventional domestic pendulum-type pulverizers (Raymond mills) of the same specifications: output is increased by more than 10%, and energy consumption is reduced by more than 6%. The key technical performance indicators have reached contemporary international standards.

Scope of application:

It is suitable for the pulverization and processing of non‑metallic minerals with a Mohs hardness of 8 or lower and a moisture content of 6% or less, provided they are non‑flammable and non‑explosive—such as barite, calcite, marble, feldspar, limestone, dolomite, wollastonite, talc, gypsum, high‑alumina clay, bentonite, manganese ore, and similar materials.

Technical Specifications: