Method for determining concentration of particulate matter in silicon bulk material in e.g. solar industry, involves conveying separated particles to measuring device, where particles are measured and returned subsequently to sample

摘要

The method involves measuring a product sample of a silicon bulk material placed in a sieve. Fine dust particles are completely separated from the bulk material by fluid (5) e.g. ethanol fluid. The separated fine particulate particles are conveyed to a particle measuring device (7) by a pump (6), where the particulate particles are measured and returned subsequently to a sample (1). A wire (2) is made from metal or plastic, and the fine particles are enhanced by additive or surfactants to the fluid.