Patent · US Active

Waste materials sampling, assaying for desired components or metals, and refining

US7820448B2 · kind B2 · utility

0Cited by

16References

18Claims

0Family size

Assignee

Johnson Matthey Public Limited Company · GB

Inventors

Peter William Ash · Reading, GB
Piers Scott Grumett · Brussels, BE
Brian Harrison · Gatineau, CA

Key dates

Filing date	Sep 16, 2008
Grant date	Oct 26, 2010
Priority date	—
Expiry date	Sep 16, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T436/25625
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A bulk sample is fed with a liquid into a mixing tank (1) where it is stirred to form a dispersion. A proportion of the dispersion is recycled from the bottom of the tank through a line to the top of the tank so that at least the dispersion in the recycle loop (3) is substantially homogeneous, and a representative sample of the dispersion is taken from the recycle loop, e.g. using a slurry sampler (5).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.