Recovering precious metals and small precious stones from clay s

Details Recovering precious metals and small precious stones from clay s Recovering precious metals and small precious stones from clay s

1997-04-16

1999-04-13

Bollinger, David H.

Classifying, separating, and assorting solids

Precedent preparation of items or materials to facilitate...

Selective differentiation

209902, B03B 100

Patent

active

058934634

ABSTRACT:
A process for recovering precious metal particles or small precious stones from aqueous clay suspensions containing said precious metal particles or precious stones in suspension with clay particles includes adding a sufficient amount of deflocculating agent to cause deflocculation of the clay particles, and allowing the deflocculated suspension to settle. The settled material containing the precious metal particles or small precious stones is then removed.

REFERENCES:
patent: 2374100 (1945-04-01), Jackson
patent: 4597791 (1986-07-01), Siddall
patent: 4976781 (1990-12-01), Mainwaring et al.

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