Magnetic rollers, also known as magnetic pulleys or dry bulk magnetic separators, are a kind of equipment that uses magnetic force to separate magnetic materials from non-magnetic materials. It is widely used in cement, magnetic separation, mining, steel, chemical, refractory, garbage disposal and other industries. The specification selection of the magnetic roller is an important link, which is related to the magnetic separation effect and the service life of the equipment. So, how to choose the specifications of the magnetic roller? In fact, as long as you follow these three steps, you can easily do it:
Step 1: Determine the granularity of selection.
The selected particle size refers to the range of material particle sizes that can be effectively sorted by the magnetic roller. If the particle size is too large, magnetic materials such as iron filings may not be completely adsorbed; If the incoming particles are too small, the service life of the magnetic roller will be affected. Generally speaking, the incoming granularity should be determined according to the specific situation of the material. If the particle size of magnetic materials such as iron filings in the material is large, you can choose to select the magnetic roller with a larger particle size; If the particle size of magnetic materials such as iron filings in the material is small, you can choose to select the magnetic roller with a smaller particle size.
Step 2: Determine the strength of the magnetic field.
Magnetic field strength refers to the strength of the magnetic field produced by the magnetic roller. The greater the magnetic field strength, the stronger the suction of the magnetic roller, and the smaller the particle size of the material that can be effectively sorted. In general, the strength of the magnetic field should be determined according to the magnetic strength of the material. If the magnetism of the material is strong, you need to choose a magnetic roller with a large magnetic field strength; If the magnetism of the material is weak, you can choose a magnetic roller with a small magnetic field strength.
Step 3: Determine the length of the magnetic roller.
The length of the magnetic roller refers to the effective length of the magnetic roller, that is, the length that the magnetic field is capable of acting. The longer the length of the magnetic roller, the greater the amount of material that can be effectively sorted. Generally speaking, the length of the magnetic roller should be determined according to the flow rate of the material. If the flow rate of the material is large, you need to choose a magnetic roller with a longer length of the magnetic roller; If the flow of material is small, you can choose a magnetic roller with a shorter length of the magnetic roller.
Illustrate. Let's say we need to buy a magnetic roller to sort the iron filings in the cement production process. The particle size of iron filings in the cement production process is generally 0Between 1-1mm, the magnetism is weak. Based on the above three steps, we can draw the following conclusions:
Inclusion granularity: 01-1mm
Magnetic field strength: 5000-10000gs
Magnetic roller length: 1-2m
According to these parameters, we can choose a selected machine with a granularity of 0Magnetic rollers with 1-1mm, magnetic field strength of 5000-10000gs, and magnetic roller length of 1-2m.