Cement Mill

As a key piece of equipment in the cement production process, the cement mill plays a vital role in converting clinker, gypsum, and admixtures into finished cement. In cement production lines, the cement mill uses the synergistic effects of mechanical grinding and dynamic separation to transform crushed raw materials into a powder with a specific surface area of ​​3,000-4,000 cm²/g. This process directly impacts the cement's particle size distribution, early strength, and workability. The use of roller press pre-grinding technology reduces power consumption per ton of cement from 40 kWh to below 28 kWh, achieving a 30% energy saving. Jiangsu Haijian Co., Ltd. is a professional manufacturer of cement ball mills and vertical cement mills. We provide specialized equipment for cement production, industrial solid waste incineration, and mining and metallurgical applications. We are a major manufacturer, key backbone enterprise, and a major export base for cement, power, environmental protection, and metallurgical mining equipment in China.

The operating principle of the cement mill is based on multi-mechanism composite grinding and intelligent separation technology. Raw materials are mixed in proportion by a weighing and batching system before entering the mill, where they are gradually refined by the impact and grinding action of the grinding media (steel balls and steel segments). The closed-circuit system's efficient classifier separates qualified fine powder using an adjustable-speed rotor, while coarse powder is returned to the mill for regrinding. The circulating load is controlled within an optimized range of 150-250%. An innovative double-layer baffle design precisely controls the material flow rate within the mill. Combined with a temperature sensor (monitoring range 0-150°C) and an acoustic emission meter (which identifies changes in ball gradation), grinding efficiency is optimized in real time.

Cement Mill Maintenance and Management
As the core grinding equipment in cement production, the long-term stable operation of a cement mill depends on a scientific and standardized maintenance system. The combination of preventive maintenance and intelligent monitoring technologies can improve equipment reliability and reduce production costs. 
1. Lubrication System Management
Check the oil level of the main bearing every 8 hours. Use ISO VG320 gear oil, and sample it monthly for contamination (NAS ≤ 8).
Relubricate the reducer every 500 hours (lithium-based NLGI 2# grease). Switch to synthetic grease when the operating temperature exceeds 80°C.
Check the oil pressure of the large and small gear spray lubrication system daily (0.15-0.3 MPa). Clean any nozzle clogs immediately.

2. Key Component Monitoring
Record the main bearing temperature (normal ≤ 65°C), vibration (≤ 4.5 mm/s), and motor current (±10% fluctuation) every shift.
Check the liner bolt tightness weekly (hydraulic bolt preload deviation ≤ ±5%).
Measure the mill shell deflection monthly (≤ 0.2 mm/m).

3. Process Parameter Control
Maintain the mill temperature ≤ 120°C (≤ 95°C for slag grinding).
Calibrate the feed metering equipment regularly (error < ±0.5%).