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Ball Mill

The ball mill is a milling equipment used to grind various materials and produce ore pulp, which uses steel balls as the grinding medium. According to different grinding methods, Ball mill can be divided into the dry and wet ways. In general, we adopt the wet grinding method for the ore dressing.

The ball mill is a milling equipment used to grind various materials and produce ore pulp, which uses steel balls as the grinding medium. According to different grinding methods, Ball mill can be divided into the dry and wet ways. In general, we adopt the wet grinding method for the ore dressing.

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What is a ball mill?

The ball mill developed by FTM machinery is a grinding machine, which uses steel balls as the grinding medium. And the ball mill is mainly used for grinding cement, silicate products, new building materials, refractory materials, fertilizers, various ores and glass ceramics, etc. Besides, it is widely used in industries such as ore dressing, building materials and chemicals. According to different grinding methods, Ball mill can be divided into the dry and wet ways. In general, we adopt the wet grinding method for the ore dressing.
Ball mill

Ball mill

What materials can be processed by ball mill grinder?

The ball mill machine can grind many kinds of materials like limestone, diabase, calcium carbonate, quartz stone, iron ore, copper ore, gold ore, grindable materials,non-metallic ore,non-flammable and explosive materials.The most common application fields are glass factory,ceramics industry and building industry.
Ball mill grinding material

Ball mill grinding material

Why does ball mill attract so many miners to invest?

Ball mills sold by FTM manufacturer are unique in following aspects. The product ball mill grinding enjoys the feature of fine discharging size and it has the following advantages like easy to use and operate, high working capacity, simple operation and reliable performance.

According to the material and discharging methods, the FTM dry ball mill and the wet ball mill can be the best choices, because they both have good abrasion resistance,large crushing ratio,superior technology,the national processing standard, high processing precision and good quality.

After the grinding process of ball mill, the discharging fineness is usually 800 mesh, and the fineness can also be adjusted.

Which grinding method does the ball mill usually use for ore dressing?

The ball mill can be divided into the dry grinding and wet grinding methods, and the users can select according to their actual situation. In general, FTM company uses the wet grinding method for ore dressing, and adopts advanced technology that can control the feeding and discharging.

According to the actual grinding materials, FTM equips the ball mill with suitable grinding media and changes traditional surface contact to line contact, so that the discharging size is more even and the yield is higher.

How does a ball mill work?

Working principle

The working principle of ball mill

The working principle of ball mill

Firstly, the materials enter the first chamber of the mill uniformly through the hollow shaft of feeder. The chamber has stepped liners with different kinds of steel balls. When the cylinder rotates, the FTM ball mill brings the materials and the balls to a certain height and then let them fall.After continuous impact on materials and balls, the materials are ground roughly in the first chamber.

Secondly, the materials enter the second chamber through a single-layer compartment board. And the chamber is lined with a flat lining plate, some steel balls inside, then FTM ball mill is grinding these materials further. Finally, the materials are ground into fine powder.

Last but not least, the powder is discharged through the discharging raft to complete the grinding work .

What are the similarities and differences between the rod mill and the ball mill?

The ball mill and the rod mill are widely used in the dressing plant,then how to distinguish them?
Ball mill vs Rod mill

Ball mill vs Rod mill

Similarities

The working principle is basically the same. Regardless of the ball mill or the rod mill, when the cylinder rotates, the grinding media (ball or rod) installed in the cylinder body are lifted to a certain height, and then they are thrown at a certain linear velocity, so the grinding media causes some impact and crunch to materials of the cylinder body. Finally, the grinding work is finished.

Differences

Grinding media: The grinding media inside the cylinder are different. The grinding media of the rod mill is steel section, and the ceramic ball mill is ceramic ball, as is shown in the following picture.
The ball media

The ball media

Appearance ratio: Rod mill, whose appearance is the same as that of the ball mill. The difference is that the ratios of cylinder shape are different. For example, the length ratio of the rod mill to the diameter is generally 1.5-2.0, and the inside lining plate on the end cap is vertical plane. The length ratio of barrel to the diameter of the ball mill is small, and in most cases, the ratio is only slightly greater than 1.

Different discharging methods

Among these ball mills, the most commonly used ball mills are lattice-type ball mill and overflow-type ball mill (named from different discharging structure). While the rod mill does not use grid plate for discharging, there are only two kinds: overflow-type and open-type. And the diameter of hollow shaft in the discharging end is generally larger than that of a ball mill with same specification.

Performance analysis: The characteristics of the rod mill are that the product is rough, but the particle size is even, and the coarse particles and the slime are little. Therefore, when the rod mill is working, the finished products are relatively light. Characteristic of the particle size is related to the condition of the rod-grinding ore. At the same time, the performance characteristics of ball mill are large production capacity, strong adaptability to materials, high fineness of materials and fine grain size. Besides, ball mill is easy to grind finely, and significant in energy-saving, but the over-grinding phenomenon is serious.

On-site construction

Construction site

As one of the well-known ball mill manufacturers in China, FTM company has always been adhering to the purpose of “ integrity-basis and quality-first”, and striving to build the most advanced ore dressing equipment in China. We sincerely welcome friends at home and abroad to come and choose the equipment you want.

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