Vertical grinder and ultrafine grinder optimize coal slurry processing technology.

Release time:

2026-07-01 08:39

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In the coal‑to‑chemicals process, particularly during the preparation of coal‑water slurry, many enterprises have long relied on ball mills to grind coal powder. This approach often leads to common issues such as a broad particle‑size distribution and agglomeration of fine particles, while offering limited flexibility in adjusting the slurry’s solid content. Prolonged continuous operation also increases nozzle wear and the frequency of maintenance. Moreover, conventional extrusion‑type grinding systems provide relatively weak shear action; once fine particles form aggregates, they are difficult to break up even with extended grinding times, thereby adding to the daily workload of operations and maintenance.

The vertical cell mill employs a vertical agitated fluidized‑shear design, ideally suited for wet fine grinding of raw coal, fly ash, and coal gangue. Inside the unit, multi‑layered agitator discs drive the grinding media to generate circulating shear forces, progressively breaking up agglomerated powders. This enables stable control of the discharged coal powder particle size according to production requirements and helps mitigate stratification issues in coal‑water slurry storage. With its modular architecture, the equipment can be seamlessly integrated into existing crushing and pulverizing lines without requiring extensive plant‑wide renovations.

The entire machine features a negative-pressure, enclosed production design, ensuring dust emissions comply with industry‑wide environmental standards. Wear‑resistant alloy materials are used for all components that come into contact with the material, making it well suited for the long‑term, continuous processing of high‑hardness raw coal. The equipment is available in both dry and wet configurations, allowing users to adjust the processing mode according to the moisture content of the raw coal. It is widely employed for pre‑treatment of mineral fines at the front end of coal‑to‑oil, coal‑to‑gas, and coal‑to‑ethylene glycol processes, and is compatible with two distinct production scenarios: on‑site pulverization at mining sites and centralized slurry preparation within chemical industrial parks.

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