Rod mills are widely used in metal and non-metal mines, water conservancy and building materials departments to grind various ores or rocks.
Rod mills are widely used in metal and non-metal mines, water conservancy and building materials departments to grind various ores or rocks.
Rod mills are widely used in metal and non-metal mines, water conservancy and building materials departments to grind various ores or rocks.
The main body of the rod mill is a low-speed rotating cylinder mounted horizontally on two large bearings. The rod mill is decelerated and driven by a motor through a reducer and surrounding large gears, or a low-speed synchronous motor is directly decelerated and driven by a surrounding large gear to drive the rotating part to rotate. The cylinder is equipped with a steel rod as a grinding medium. The steel rod is in centrifugal force. Under the action of frictional force, it is lifted to a certain height and falls in a state of throwing or venting. The ground material continuously enters the inside of the cylinder through the feeding port, is crushed by the moving grinding medium, and is discharged out of the machine through the force of overflow and continuous feeding for the next process.
The large rod mill is equipped with a slow transmission device to enable the host to obtain a speed of 0.15r/min for turning, maintenance or loose load; at the same time, it is equipped with a jacking device for repairing and jacking up the rotating part.
The particle size characteristics of rod mill products are related to the ore crushed by rod mills. When the rod hits the ore, it first strikes the coarse particles, and then grinds the smaller ore particles, thereby reducing the risk of over-crushing. When the rod rotates and rises along the liner, the coarse particles are sandwiched in between, like a rod sieve, allowing fine particles to pass through the gap between the rods. This is also conducive to crushing the coarse particles and making the coarse particles concentrated in the grinding medium. The place to hit.
Therefore, the rod mill product is more uniform, and the over-crushing is lighter.
The rod mill adopts a cylindrical rotating device, an outer gear drive, two bins, a grid type, and is composed of a feeding part, a discharging part, a revolving part, a transmission part and other main parts. The hollow shaft is made of steel castings, the inner lining is removable, and the large rotary gear is processed by casting gear hobbing, and the cylinder body is inlaid with a wear-resistant liner, which has good wear resistance.
The rod mill is composed of a horizontal cylinder, a hollow shaft for feeding and discharging materials, and a grinding head. It is a long cylinder in simplified form. The cylinder is equipped with a grinding body. The cylinder is made of steel plate. The steel liner is fixed to the cylinder for grinding. The body is generally a steel round bar, and is packed into the cylinder according to different diameters and a certain proportion.
Calculate and select according to the particle size of the grinding material and other working condition data. The material is loaded into the cylinder by the hollow shaft at the feed end of the mill. When the cylinder of the rod mill rotates, the grinding body will cause It is attached to the liner of the cylinder and taken away by the cylinder. When it is brought to a certain height, it will be thrown off due to its own gravity. The falling grinding body will hit the material in the cylinder like a projectile. broken. The powder is discharged through the discharge plate to complete the grinding operation.
