Rod Mill

The Introduction of Rod Mill

The rod mill is a grinding mill that utilizes steel rods as the grinding medium in the cylinder. It is commonly used in various industries such as ore dressing, machinery, and chemical industries to grind a variety of brittle materials and ores. The rod mill offers several advantages, including high yield and uniform discharging size, making it suitable for different hardness levels of ores.

The rod mill is available in both dry and wet types, allowing customers to choose the appropriate type based on their specific conditions. Because of its grinding medium, the rod mill is also referred to as a grinding rod mill or rod grinding mill.

In summary, the rod mill is a versatile grinding mill that uses steel rods as the grinding medium, offering advantages such as high yield and uniform discharge size. It is widely used in various industries for grinding brittle materials and ores.

Rod Mill in Ore Processing Plant

The rod grinding mill has several distinctive features:

1. Selective Grinding Effect: During the grinding process, the grinding medium and ore make line contact, which results in a certain selective grinding effect. This means that the rod mill can effectively grind and separate materials of different sizes and properties.
2. Uniform Particle Size: The rod mill produces a product with a more uniform particle size compared to other grinding mills. This is because the grinding action of the rods creates a more consistent and controlled size reduction of the material.
3. Low Grinding Rate: The grinding rate of the rod mill is relatively low. This means that the particles are subjected to less impact and abrasion during the grinding process, leading to lower wear on the equipment and longer service life.
4. Greater Processing Amount for Coarse Grinding: When it comes to processing coarse materials, such as large ore particles, the rod mill has a higher processing capacity compared to a ball mill of the same specification. This makes the rod mill more suitable for tasks where a larger amount of material needs to be processed.
5. Vice Versa for Fine Grinding: Conversely, for fine grinding tasks, such as grinding finer particles, a ball mill may have a higher processing capacity compared to a rod mill of the same specification. This is because the ball mill typically provides more efficient grinding action for finer materials.

In summary, the rod grinding mill offers selective grinding, produces a uniform particle size, has a lower grinding rate, and has a greater processing capacity for coarse grinding tasks. However, for fine grinding, a ball mill may be more suitable.

The rod grinding mill has a wide range of applications and is suitable for various industries.

Some of the common applications include:

• Refractory Industry: The rod mill is used for grinding operations in the refractory industry, where materials such as clay, alumina, and silica are processed. The rod mill helps to reduce these materials into a fine powder or slurry, which can then be used in the production of refractory products.
• Chemical Industry: In the chemical industry, the rod mill is utilized for grinding various chemical substances and compounds. It is commonly used in the production of pigments, dyes, fertilizers, and other chemical products.
• Metallurgy Industry: The rod mill finds its application in the metallurgy industry for grinding ores and extracting valuable metals. It is used in mineral processing plants to grind various ores such as copper, gold, and iron.
• Glass Industry: The rod mill is used in the glass industry to pulverize and mix raw materials to produce glass. It helps in achieving the desired particle size and uniformity, which are essential for glass production.
• Sand Making Industry: In recent years, the rod mill has also been used in the sand making industry. It is used to grind and shape various materials, including rocks, minerals, and aggregates, to produce sand with specific properties and particle sizes.
• Rare Metal Ore Processing: The rod mill is often adopted in gravity or magnetic separation plants for rare metal ores, such as tungsten and tin. It helps to prevent over-crushing and ensure the proper size reduction of the ores before the separation process.
• In summary, the rod grinding mill is widely used in the refractory industry, chemical industry, metallurgy industry, glass industry, and sand making industry. It is also commonly used in rare metal ore processing plants for particle size control and over-crushing prevention.

The Applications of Rod Mill

The working principle of a rod mill is as follows:

1. Motor and Transmission: The rod mill is driven by a motor through a reducer and a big gear that surrounds it. Alternatively, it can be driven directly by a low-speed synchronous motor through the big gear surrounding the mill’s cylinder. This motor or synchronous motor provides the rotational power for the cylinder.
2. Grinding Medium: The cylinder is equipped with appropriate grinding medium, typically steel rods. These rods act as the grinding medium and are responsible for reducing the size of the materials being processed.
3. Grinding Process: When the rod mill is in operation, the cylinder rotates due to the motor or synchronous motor. As the cylinder rotates, the centrifugal force and friction cause the grinding medium (steel rods) to be lifted to a certain height and then fall back down.
4. Material Feeding: The grinding material is continuously entered into the cylinder body through a feeding device. This can be a conveyor belt or a chute, for example. The material enters the cylinder and is crushed by the grinding medium (steel rods) as they fall and collide with the material.
5. Discharge: The crushed material is discharged from the rod mill through two mechanisms: overflow and continuous feeding force. The overflow mechanism allows the finer particles to leave the mill through a discharge port, while the coarser particles and grinding medium are retained in the mill for further grinding. The continuous feeding force mechanism ensures a continuous flow of material through the mill.
6. Next Stage of Operation: The discharged material is then ready for the next stage of operation, such as further processing, classification, or separation.

In summary, the rod mill operates by rotating the cylinder, which contains steel rods as the grinding medium. The material is continuously fed into the cylinder, where it is crushed by the grinding medium. The crushed material is then discharged from the mill through overflow and continuous feeding force mechanisms for further processing.

The Working Principle of Rod Mill

The Manufacturer of Rod Mill-Zoneding Machine

Zoneding Machine is a reputable manufacturer that has specialized in the production of mineral processing equipment for many years. Their production technology and service have been widely recognized and welcomed internationally. They have designed the rod mill with appropriate grinding body and materials to improve its performance in terms of quality and output. Importantly, the price of their rod mills is reasonable and competitive.

Zoneding Machine is a reputable manufacturer that has specialized in the production of mineral processing equipment for many years. Their production technology and service have been widely recognized and welcomed internationally. They have designed the rod mill with appropriate grinding body and materials to improve its performance in terms of quality and output. Importantly, the price of their rod mills is reasonable and competitive.

Zoneding Machine sells their products directly to customers, without involving intermediaries. This direct sales approach saves both time and effort, and ensures that customers can enjoy a more reasonable price for their equipment. If you are interested, you can make an online consultation to get a discount quotation and obtain more detailed information about the equipment. Additionally, Zoneding Machine welcomes customers to visit their factory to learn more about their manufacturing capabilities and to see their equipment in person.

Customer Case

Model	Shell Specifications （mm）		Shell rotation speed （r/min）	Feeding size (mm)	Discharging size (mm)	Processing capacity (t/h)	Power (kw)	Total weight (t)
	Diameter	Length
MBS0918	900	1800	36-38	≤25	0.833-0.147	0.62-3.2	18.5	5.9
MBS0924	900	2400	36	≤25	0.833-0.147	0.81-4.3	22	6.7
MBS1224	1200	2400	36	≤25	0.833-0.147	1.1-4.9	30	13.9
MBS1530	1500	3000	29.7	≤25	0.833-0.147	2.4-7.5	75	19.8
MBS1830	1830	3000	25.4	≤25	0.833-0.147	4.8-11.6	130	34.9
MBS2130	2100	3000	23.7	≤25	0.833-0.147	14-35	155	46.5
MBS2136	2100	3600	23.7	≤25	0.833-0.147	19-43	180	48.7
MBS2430	2400	3000	21	≤50	0.833-0.147	25-65	245	59.7
MBS2736	2700	3600	20.7	≤50	0.833-0.147	32-86	380	92.5
MBS2740	2700	4000	20.7	≤50	0.833-0.147	32-92	400	95
MBS3245	3200	4500	18	≤50	0.833-0.147	64-180	630	149