Vortex sorter
Material enters mid-chamber and spins. Rotation flings it outward in proportion to mass; intake drag pulls it toward the centre; turbulence knocks it around in between. The two threshold rings determine where particles are captured—and how much of the wrong material reaches each outlet.
Chamber
lightmediumheavy
Inner ring — fines outlet. Outer ring — overflow outlet.
Controls
Fines outlet (inner)
light0
medium0
heavy0
Overflow outlet (outer)
light0
medium0
heavy0
Reading
clean separations0
cross-contamination0
ambiguous (medium)0
Cross-contamination is light material reaching overflow, or heavy material reaching fines. Medium material can land in either outlet depending on the thresholds—that is the boundary doing its job.