overflow ball mill for ultra-fine grinding operation

Overflow ball mill is mainly composed of cylinder, end cover, main bearing, hollow journal, transmission gear and feeder, etc. It grinds the raw material into the required fineness through the collision and grinding effect between steel balls and materials, with high automation level and long service life.

Features of overflow ball mill:

1. simple structure, easy maintenance: the design of overflow ball mill is relatively simple, and the various parts of the equipment, such as cylinder, end cover, liner plate, etc. can ensure good operability. The overall structural design focuses on easy maintenance and upkeep, reducing production interruptions and equipment downtime.
2. no screen structure: compared with the lattice type ball mill, overflow ball mill does not have the traditional discharge screen, which avoids the risk of screen clogging and ensures the stable discharge of materials.
3. automation control: overflow ball mill has high automation control, usually equipped with PLC control system, which can realize precise operation and control, reduce the dependence on manual operation, and ensure efficient and stable production.

Advantages of overflow ball mill:

1. energy saving and high efficiency: overflow ball mill adopts high efficient shock absorption device and reasonable steel ball configuration, which can effectively reduce energy consumption and improve grinding efficiency. Unlike traditional equipment, its power consumption is relatively low, which helps to save energy costs.
2. segmented start, reduce power consumption: overflow ball mill adopts air clutch or liquid soft start, which can start the motor in segments, reduce the power demand during startup, reduce the current fluctuation of the equipment, and avoid the impact of high-current startup on the power grid.
3. high wear resistance, prolong service life: the equipment adopts high wear-resistant materials, such as pasteurized alloy, high lead bronze, etc. These materials can effectively improve the service life of the liner, the axle tile and other wear parts, reduce the frequency of replacement, and save the maintenance cost.
4. superior bearing system: overflow ball mill adopts dynamic and static pressure bearing or full static pressure bearing, with a good lubrication system, can effectively prevent the phenomenon of “burning tile”, to ensure the long-term stable operation of the equipment under high load.

Principle of overflow ball mill:

The raw materials are fed into the cylinder of the mill through the feeder, and the materials collide with the steel balls in the cylinder, which are brought to a certain height by centrifugal force and then fall down freely, so as to grind the materials. The mill is divided into two bins, the first bin is used for coarse grinding, equipped with stepped liner or corrugated liner, the collision between the steel ball and the material produces a large number of grinding; after coarse grinding, the material enters into the second bin, which is further ground by the steel ball to form the fineness that meets the requirements. Powdery materials are naturally discharged from the mill through the discharge grate plate to complete the grinding task.

Application areas of overflow ball mill:

1. Mining industry: overflow ball mill is widely used in mineral processing plant for ore grinding, suitable for processing medium and low hardness ores. It is usually used as the core equipment in the grinding process for the grinding operation of copper, gold, lead, zinc and other ores.
2. Chemical industry: In the production process of chemicals, overflow ball mill can be used for grinding raw materials, such as the manufacture of fertilizers, paints, pigments and so on.
3. building materials industry: in the production of cement, ceramics, overflow ball mill is used for grinding raw materials to meet the requirements of fineness in the production process.
4. environmental protection industry: overflow ball mill is also commonly used in waste reprocessing, such as garbage, cinder, slag, etc., crushing and grinding, which is helpful for resource recycling and reuse.

In short, overflow ball mill with its high efficiency, energy saving and durability, is widely used in many industrial fields, and with the continuous development of technology, its performance and service life are also constantly improving.