Method for separating silicon and polyethylene glycol from suspension during manufacturing of wafer for solar cell in photovoltaic industry, involves adding gas bubbles to particle of group such that particle of another group is deposited

摘要

The method involves generating gas bubbles in liquid, and adding the gas bubbles to a particle of a group such that the particle of the group floats and particle of another group is deposited. The gas bubbles are produced by slight lowering of pressure in the liquid by using an ultrasonic generator (2) arranged in a reactor (1). The particles of the groups are separated by using a centrifuge. A turbidity measuring unit (5) is installed in center of the reactor for automatically detecting whether desired separation of the particles is carried out or not. An independent claim is also included for a reactor.