The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jun. 11, 2019

Filed:

Oct. 24, 2016
Applicant:

Ecolab Usa Inc., St. Paul, MN (US);

Inventors:

Kim R. Coleman, Naperville, IL (US);

Rolf Arndt, Highlands Ranch, CO (US);

Assignee:

Ecolab USA Inc., St. Paul, MN (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22B 60/02 (2006.01); C22B 3/20 (2006.01); C02F 5/08 (2006.01); C22B 3/44 (2006.01); B05B 9/04 (2006.01); B01D 11/02 (2006.01); C22B 3/04 (2006.01); C22B 59/00 (2006.01); C02F 5/00 (2006.01); C22B 3/00 (2006.01); C02F 103/10 (2006.01);
U.S. Cl.
CPC ...
C22B 60/0221 (2013.01); B01D 11/0207 (2013.01); B05B 9/04 (2013.01); C02F 5/00 (2013.01); C02F 5/08 (2013.01); C22B 3/04 (2013.01); C22B 3/20 (2013.01); C22B 3/44 (2013.01); C22B 11/04 (2013.01); C22B 59/00 (2013.01); C02F 2103/10 (2013.01); C02F 2209/02 (2013.01); Y02P 10/234 (2015.11);
Abstract

The invention provides methods, compositions, and apparatuses for preventing the formation of scale in heap leach process solution distribution systems comprised of piping, spray nozzles, or emitter tubes. Solution distribution system components often become fouled by scale because of local hot spots more prone to form scale than other locations along the systems length. Positioning sensors that detect periods of high temperature stress and adjusting scale control reagent dosage to send the right amount to inhibit hot spot deposition allows for the control of scale without using wasteful excessive amounts of scale control reagents. This can vastly improve scale control performance under high temperature stress conditions while minimizing scale control reagent waste under less severe stress conditions to reduce the total operating cost of running heap leach mining operations which depend upon well-functioning solution distribution systems.


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