Patent ID: 9719180
Date: 2017-08-01
CPC Classifications: C25C

Claim:
1. Dose meter for a dosing cup of a crust-breaker dispenser as employed in an aluminum smelting operation, comprising a generally cylindrical member dimensioned to fit within the dosing cup the cylindrical member having a generally arcuate lower rim with one or more cutouts extending above the rim; a ring attaching around a shaft of the crust-breaker dispenser; one or more connector flanges connecting said ring to said generally cylindrical member; and means for holding said generally cylindrical member in place a predetermined slot distance above a valve seat of the dosing cup as a stand-off to create a gap between a lower edge of said generally cylindrical member and said valve seat, the gap being of sufficient width to ensure that alumina does not accumulate between the generally cylindrical member and the valve seat, but narrow enough that most of the alumina passes out of the generally cylindrical member via said gap.