Rare earth smelting rectifier is a device used to control the direction and size of current during rare earth smelting. Its working principle is as follows:

1. The rectifier uses semiconductor rectifier elements (such as thyristors, rectifier diodes, etc.) as switching devices. When the rectifier is turned on, the current can flow in one direction; when the rectifier is turned off, the current cannot flow in the opposite direction.
2. The rare earth smelting rectifier adjusts the size and direction of the current by controlling the conduction and cutoff of the rectifier element. This ensures that the extraction of rare earth elements during the smelting process can be carried out in the required manner.
3. The rectifier is usually used in conjunction with the control system to adjust the parameters of the current in real time according to the feedback signal to ensure the stability and efficiency of the smelting process.
4. The rectifier can also protect circuits and equipment from current overload and reverse damage. This helps to extend the service life of the equipment and improve production efficiency and quality.