To provide electrostatic equipment capable of efficiently imparting static electricity to substances to be treated and of surely separating them, which overcomes the problems of the conventional electrostatic separation method that difference of electrostatic electrification property between various substances is slight and that the property is quite week in separating a mixture of the substances is separated according to electrostatic electrification property.

An endless belt 4 is suspended on a pair of revolving drums 2, 3 so that the upper part of the belt is approximately horizontally. A supply part 5 of the substance to be treated and a voltage applying part 6 to impart static electricity are arranged at the upper part horizontal surface of the belt 2, 3. A receiving part 10 for non-electrified substances is arranged at the lower part of the belt 2, 3 and a destaticizing part 7 is arranged at the backward. The voltage applying part 6 is provided with an applied voltage adjusting means 9 and supplies the substances to be treated to the upper part of the belt 2, 3. The non-electrified substance and the electrified substance is separated upon transferring of the belt 2, 3 by applying voltage at the voltage applying part 6 and is screened by the difference for the electrification property of the substances to be treated by adjusting the applied voltage.