The rod mill is a new type of ore grinding equipment developed on the basis of the ball mill. Because of its more uniform output and simple structure, it is loved by many people in the industry. The rod mill is mainly composed of cylinder body, feeding and discharging device, main bearing parts, transmission device, large and small gears and other parts. The rod mill will be introduced in detail below.
Rod mills are generally of the wet overflow type and can be used as primary open-circuit grinding. They are widely used as primary grinding rod mills in artificial stone sand, mineral processing plants, and power departments of chemical plants. Luoyang Dahua Heavy Machinery GMBZ series rod mill adopts high-end rolling bearing support instead of traditional Babbitt metal bearing support, with small running resistance, energy saving of 10-20%, and productivity increase of more than 20%.
Structure
The ratio of cylinder length to diameter of the rod mill is mostly between 1.5-2.0, and the cylinder length ranges from 1.5m to 4.5m. The rotating speed of the cylinder of the rod mill is generally lower than that of the ball mill of the same specification, so the grinding medium in the cylinder of the rod mill is usually in a cascading state.
Medium
The medium of the rod mill is a steel rod, and the medium of the ball mill is a steel ball, and their names come from this. The diameter of the steel ball is generally less than 100mm, while the length of the steel rod is usually greater than 500mm.
Working principle
The roller of the rod mill drives the movement of the grinding medium, and the grinding medium reaches a certain height and is thrown down to impact and grind the material. It does not grind the ore with a certain point of the steel rod, but with the full length of the rod to grind the ore, that is, the medium and the material are in line contact, and the force is relatively uniform. Before the coarse grains are not ground, Fines are rarely subject to crushing.
Applicable material hardness
Rod mills meet the operating requirements of various ore and rock crushing and artificial sand making, such as fly ash, limestone, quartz sand, aluminum powder, coal powder, steel slag, iron ore, iron slag, aluminum slag, coal gangue, etc. .
What is the grinding efficiency of the rod mill?
The production efficiency of any equipment cannot be determined in general, because there are many influencing factors, so the grinding efficiency of the rod mill still needs to be analyzed in detail. Because the ratio of cylinder length to diameter of the rod mill is larger, and the medium is longer, the operating principle is line contact, so the efficiency of the rod mill is higher than that of the ball mill in the same specification.
If you want to know more knowledge and details of mining equipment, please add WhatsApp: +8618238543716. or visit our website: https://mine-machines.com/
