Ball mill

Tongli Conical Ball Mill

Tongli conical ball mill is a high-efficiency and energy-saving grinding equipment, widely used in mining, building materials and other industries. The unique conical cylinder design increases the grinding area and improves the grinding efficiency. It can process materials with a particle size of less than 25mm, with a maximum feed rate of 35t/h and a product fineness of 200-325 mesh. It saves 15-20% energy compared to traditional ball mills. The cylinder lining is made of high-chromium alloy steel, which extends the service life by 30%. The noise of the ball mill is controlled below 85dB, the vibration value does not exceed 2.5mm/s, and the operation is stable and reliable.

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TONGLI Conical Ball Mill

A MACHINE YOU CAN DEPEND ON!

Tongli Conical Ball Mill is a high-efficiency grinding equipment. Its unique 15-20° inclination conical cylinder design effectively increases the grinding area by about 30%. The built-in spiral grading system allows the product fineness to be controlled within the range of 200-325 meshes. It saves 20-30% energy compared to traditional ball mills, and the unit energy consumption is reduced to 12-15kWh/t.

Built-in grading system

The conical ball mill integrates a spiral grading system to achieve simultaneous grinding and grading. This innovative design enables the product fineness to be accurately controlled within the range of 200-325 mesh, greatly improving production efficiency. The built-in grading system can also discharge qualified products in time to avoid over-grinding and reduce energy consumption.

Efficient use of grinding media

The optimized structure reduces the medium consumption by 10%-15% and increases the material crushing rate by about 25%. When processing ores with higher hardness, the use of high-chromium steel balls with a diameter of 30-40 mm can increase the grinding efficiency by 15%-20%. In addition, grinding time is reduced by 10%-20%, for example, from 120 minutes to 100 minutes when processing ore.

Conical barrel design

The conical ball mill adopts a conical barrel with an inclination of 15-20°. This unique design increases the effective grinding area by about 30%. Compared with traditional ball mills, the material moves in a spiral upward motion in the barrel, which prolongs the grinding time and improves the crushing efficiency. At the same time, this design reduces dead angles, makes the ball milling media more evenly distributed, effectively prevents over-grinding, and makes the product particle size more uniform.

ModelCylinder Speed (rpm)Motor Power (kW)Ball Load (kg)Feed Size (mm)Capacity (t/h)
MQ750×106049.646000-120.14~0.34
MQ750×180049.67.510000-120.55~1.11
MQ900×1800411315000-150.66~1.26
MQ900×2100411517000-150.69~1.30
MQ1200×16003518.525000-200.80~2.0
MQ1200×2000352230000-201.1~2.6
MQ1200×2400353035000-201.3~3.2
MQ1200×2800353040000-201.42~3.8
MQ1500×2000313744000-251.8~4.5
MQ1500×3500317582000-253.3~8.2
MQ1830×360024.23135110000-256.6~18.5
MQ2100×360023.8180150000-3012~30
MQ2400×450021.3380380000-3529~62
MQ2700×360020.6400390000-3531~65

FAQ

1.How Does the Grinding Efficiency of a Conical Ball Mill Compare to a Traditional Ball Mill?

The grinding efficiency of a conical ball mill is typically 20%-25% higher than that of a traditional ball mill. The unique conical design allows for more thorough collision and shearing forces in different grinding zones, which enhances the breakage rate of materials.

For instance, when processing iron ore, the use of a conical ball mill can increase the fineness index (80% less than 74 microns) by up to 15%. This means that the material is ground more finely and more consistently, which can be crucial for subsequent processing steps.

In addition to improved fineness, the grinding time in a conical ball mill is shorter, usually reduced by 10%-20%. This reduction in grinding time not only enhances productivity but also reduces energy consumption, making the conical ball mill a more efficient and cost-effective option for various grinding applications.

2.Characteristics of the Cylinder Incline Design in a Conical Ball Mill

One of the distinctive structural features of a conical ball mill is its cylinder incline, typically designed within a 2-4 degree range. This incline has a significant impact on grinding efficiency, which can be improved by 15-20% compared to a horizontal design. The optimized collision and shearing forces experienced by the materials being ground contribute to this increased efficiency.

The incline design also optimizes material flow by accelerating the movement of materials from the feed end to the discharge end. This results in a 30-40% reduction in residence time, minimizing bottlenecks and enhancing overall processing speed. Faster material flow ensures that the grinding process is more continuous and less prone to delays.

Additionally, the inclined structure facilitates a better distribution of grinding media. Larger media are concentrated near the feed end, while smaller media are closer to the discharge end. This arrangement can increase grinding efficiency by 10-15%. Furthermore, the incline helps reduce the incidence of over-grinding by 25-30%, leading to a more consistent particle size distribution and improving the quality of the final product.

3. Design of the Classification System in a Conical Ball Mill

The classification system in a conical ball mill is intricately designed to enhance overall efficiency and precision. One key feature is the built-in spiral classifier, which is more efficient than external classifiers, typically increasing efficiency by 15-20%. This internal integration streamlines the classification process, reducing the need for additional external equipment and simplifying the overall setup.

Another important aspect is the multi-stage screening structure. Usually, 2-3 levels of screens are employed to improve classification accuracy by 25-30%. These multiple screening stages ensure a more thorough separation of fine and coarse particles, resulting in a more consistent product size distribution.

The classification system also includes adjustable screen angles, typically ranging from 15 to 30 degrees, to optimize the classification effect. This adjustability allows for fine-tuning based on the specific characteristics of the material being processed, thereby improving the overall effectiveness of the classification system. Additionally, a high-frequency vibration mechanism with frequencies ranging from 900 to 1200 vibrations per minute further enhances classification efficiency, ensuring that particles are consistently and accurately separated.

4. Characteristics of the Bearing System in a Conical Ball Mill

The bearing system of a conical ball mill is designed to enhance both performance and longevity. One of its standout features is the use of double-row self-aligning roller bearings. These bearings have a load-carrying capacity that is 30-40% higher than that of ordinary bearings, allowing the mill to handle heavier loads and operate more efficiently under demanding conditions.

Another crucial aspect of the bearing system is the application of oil film bearing technology. This technology reduces friction losses by 15-20%, which not only enhances the smooth operation of the mill but also contributes to lower energy consumption. Additionally, the system includes a labyrinth seal design, which improves dust-proofing effectiveness by 50-60%. This advanced sealing mechanism protects the bearings from contamination, thereby extending their lifespan.

The bearing system is also equipped with an intelligent monitoring system that provides real-time data on parameters such as temperature and vibration. This continuous monitoring improves equipment stability by reducing vibration amplitude by 30-35%, and it also offers early warnings of potential issues, enabling proactive maintenance. As a result, the overall lifespan of the equipment is extended by 40-50%, reaching 50,000 to 60,000 hours. The maintenance frequency is also reduced, extending the interval for regular maintenance from 3,000 hours to 5,000-6,000 hours. Additionally, the improved efficiency of the bearing system helps to reduce energy consumption losses by 2-3%, contributing to more sustainable operation.

5. Design of the Transmission System in a Conical Ball Mill

The transmission system of a conical ball mill is meticulously engineered to optimize performance and efficiency. A key component is the variable frequency drive (VFD) motor, which allows for a speed regulation range of 60-110% with an accuracy of ±0.1%. This precise control over the motor speed enables more efficient grinding and better adaptation to varying material characteristics and processing requirements.

Complementing the VFD motor is a high-efficiency gear reducer, which operates with an efficiency of up to 98%, providing a 3-5% improvement over standard reducers. This high-efficiency gear reducer translates to less energy loss during power transmission, contributing to the overall energy efficiency of the mill.

The transmission system also features a flexible coupling, designed to reduce vibration transmission by 50-60%. This coupling not only enhances the smooth operation of the mill but also reduces wear and tear on the mechanical components, thereby extending their service life.

In addition, an intelligent control system is integrated into the transmission design, enabling real-time adjustments to the rotational speed. This system has a response time of less than 0.5 seconds, ensuring that the mill can quickly adapt to changes in operating conditions and maintain optimal performance. This rapid responsiveness enhances the efficiency and stability of the grinding process, ultimately leading to better productivity and reduced operational costs.

6. What is a Cone Ball Mill and Its Application Areas?

A cone ball mill is a high-efficiency grinding device primarily used for grinding various hardness ores and other materials. Its unique cone-shaped cylinder design helps improve grinding efficiency and product uniformity. The equipment is widely used in industries such as mining, building materials, chemicals, and power. It excels particularly in grinding coal, metal ores, and non-metallic ores.

The working principle of a cone ball mill involves the rotation of the cone-shaped cylinder, which drives the internal steel balls or other grinding media to grind and impact the materials, thus achieving the grinding effect. It features high grinding efficiency, low energy consumption, and uniform product granularity.

Maintenance of the equipment includes regular inspection and replacement of worn parts, maintaining the lubrication system's normal operation, and periodically cleaning dust and debris inside the equipment. These measures can effectively extend the equipment’s service life and ensure its stable operation.

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