Tantalum-niobium ore and monazite can be separated through electrostatic separation due to their significant difference in electrical conductivity, despite their similar magnetic properties. Electrostatic separation is a physical beneficiation method that utilizes the differences in electrical conductivity between minerals.

The process is based on the distinct electrical behaviors of minerals in a high-voltage electric field. Tantalum-niobium minerals, being conductive, are influenced by the electric field and move toward the electrodes. In contrast, monazite, which is non-conductive, remains unaffected by the electric field. This allows for effective separation using a high-voltage electrostatic separator, offering an environmentally friendly and efficient solution.

• Fine particles (<0.074 mm) can significantly impair the efficiency of electrostatic separation. Desliming or screening is generally required prior to processing.
• Surface contamination and high humidity can reduce the difference in electrical conductivity, so drying and surface cleaning are necessary.

In addition to separating monazite, the high-voltage electrostatic separator can also separate tantalum-niobium ores from other non-conductive minerals such as zircon, quartz, and mica, thereby improving the grade of the concentrate.