Electromagnetic pump in the form of power can be divided into AC and DC pump.

According to the liquid metal in the current fed to the way can be divided into conduction type (electric conductivity) electromagnetic pump and induction type electromagnetic pump. Direct current or alternating current for electric magnetic pump. It has a non-magnetic refractory metal tube (see photo), around the tube is a magnet, magnetic field and vertical tube. When the current pass into the tube and the lines are vertical and, according to the left, mechanical force of the conductive fluid pressure outlet tube. Conductance type generally for small pumps for the low pressure and small flow. In a conductive electromagnetic pump, the current is transmitted directly to the liquid metal by the electrode directly on the sides of the pump. Induction pump, induction type using multi - phase flow. Current is generated by an alternating magnetic field. The most modern induction type electromagnetic pump is linear induction pump, equipped with a flat, linear stator winding, the induction force is axial, the size is large, large flow pump is this type.

Electromagnetic pump according to the structure of different can be divided into flat and cylinder pump, etc..

By the interaction between the magnetic field and the electric current in the conducting fluid, the fluid is affected by the electromagnetic force and the pressure gradient is generated, which is a device for driving the fluid motion. Most of the utility used to pump liquid metal, so it is also known as liquid metal electromagnetic pump. Electromagnetic pump according to form of power supply can be classified as pump AC and DC pump; can be divided by the liquid metal current fed to the conduction type electromagnetic pump and induction electromagnetic pump; according to the different structures can be divided into plane pump and cylinder pump. In the conduction pump, the electric current is transmitted directly to the liquid metal by the external power source through the electrode of the pump. Electromagnetic pump with no moving parts, simple structure, good sealing performance, reliable operation, therefore in the chemical industry, printing industry for conveying a number of toxic heavy metals, such as mercury, lead, in atomic power industry for conveying chemical properties is particularly lively and metal, such as sodium, potassium and sodium potassium alloy; in foundry enterprises can be used to make quantitative pump of active metals such as aluminum and magnesium, but now the main military and other large enterprises. The disadvantage of electromagnetic pump is low efficiency,

The disadvantage of electromagnetic pump is low efficiency, which is not widely used in smelting and casting industry.

Electromagnetic pump is similar to that of ordinary solenoid valve, it to alternating current for the work force, current through the solenoid winding formation fixed alternating magnetic field, and motion of the pump body formed interaction, drives the pump body vibration, push the liquid output.