What are the parts components of a cement grinding ball mill?
1. The ball mill body: The ball mill shell is made of all-welded steel construction, the cylindrical cement grinding mill shells, fabricated from premium rolled steel plates, feature specific dimensions and material specifications tailored to cement ball mill operation. On each side of the ball and mill, there’s a T-sectional welded-up slide ring and four manholes, two for each grinding compartment. A ball mill for cement grinding φ3.5×13 m uses a shell made of Q235-B rolled steel, with a plate thickness of 38 mm to withstand high operational stresses. We also conduct NDT non-destructive testing like ultrasonic/magnetic examination to confirm airtightness of the grinding ball mill shell. This ensures that your cement mill or cement finish mill runs reliably under all conditions.
2.The slide shoe bearing: The design only needs simpler foundations and has a lower installation height, reducing civil construction costs. The base plates are easy to align, saving both time and labor during installation. The slide shoes and bearing casing can be installed separately, making assembly and maintenance simple. The closed bearing housing prevents oil leakage, keeping the system clean and reducing maintenance work. The slide shoes are easy to replace when needed, which shortens downtime and improves operation efficiency of the ball grinder. Since there are no rollers, there is no risk of the moveable bearing getting blocked, ensuring smooth and reliable ball mill cement operation. Each slide ring is supported by two self-aligning, hydrodynamically lubricated, and water-cooled slide shoes that ensure smooth rotation and stable load distribution. The slide shoe at the drive end holds the mill cement in the axial direction, while the others allow free axial movement to accommodate thermal expansion and contraction of the ball grinding mill body. The bearings operate on a continuous film of lubricating oil to prevent metal-to-metal contact, reducing wear, friction, and noise. Each bearing assembly is connected to a fully enclosed lubrication and conditioning unit equipped with an oil tank, motorized low- and high-pressure pumps, filtration, and a temperature-controlled heating and cooling system, ensuring reliable lubrication, stable oil temperature, and consistent performance for the ball mill for cement grinding under all operating conditions.
3.Inlet & Outlet System: At the inlet, a strong steel duct introduces venting air evenly into the cement ball mill to maintain proper internal pressure and cooling. The airflow is controlled by a manually (automatic also available) adjustable throttle valve and monitored through a pressure gauge, allowing operators to fine-tune the air volume and prevent dust leakage or backflow. The feed chute, made from ASTM A36/ DIN 17100/ ISO 630, is lined with thick, bolted wear-resistant plates to handle abrasive materials such as clinker, slag, or raw mix for the ball mill for grinding. Its slope is optimized between 25°–30° to ensure a continuous feed while reducing material buildup. At the discharge end, the outlet casing is constructed to withstand high temperatures and negative pressure inside the cement grinding mill. The casing is fully insulated with layers of high-temperature mineral wool, which helps minimize heat loss and protect the outer structure from thermal expansion. Between the stationary outlet casing and the rotating outlet cone, flexible and heat-resistant seals are installed to prevent dust escape and maintain an airtight system during rotation of the grinding mill cement.
4.PLC Control system: What is a ball mill? Our PLC Control Monitoring system continuously monitors key operating parameters such as material and air temperatures, internal pressure, and mill load level inside the ball mill for cement grinding. Airflow and pressure are regulated by a damper at the mill fan inlet to maintain proper ventilation and prevent dust leakage. The material filling level is detected by acoustic/electronic sensors to ensure steady grinding conditions in the cement mill. In closed-circuit systems, the circulating load is measured by weighing the separator reject stream, allowing precise control of product fineness for the ball grinder or concrete mill. These automatic monitoring and adjustment functions ensure consistent ball mill cement efficiency, energy savings, and reliable operation of the ball and mill.5.
