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United States Department of Agriculture

Agricultural Research Service

Title: Method and apparatus for monitoring liquid and solid contents in a froth
See also: US Patent Office Full Record

Administrator and Immediate Staffs


Patent Number: 7618517
Docket Number: 15508
Serial Number: 12080022
Date Patented: 11/17/2009

 

Summary:   A method and apparatus are presented for determining the quantity of liquid and solid content in a removal stream of a froth created from a suspension that is generated during a froth flotation operation. Specifically, electrodes are immersed in the froth generated from a suspension having a known quantity of fiber particles, and the conductance of the froth is measured to establish a relationship between the measured conductance and the quantity of fiber particles. The electrodes are then submerged in a froth generated from a suspension having an unknown quantity of fiber particles, and the froth conductance is measured. The quantity of fiber particles in the froth can then be determined from the pre-established relationship between conductance and solid particle content.

Patent Status: Patent application filed on March 31, 2008. Link at USPTO filed under patent title “Method and apparatus for monitoring liquid and solid contents in a froth.”

Inventors:

Jun Yong Zhu
One Gifford Pinchot Dr.
US Forest Service
Madison, WI 53726
Phone: (608) 231-9520
jshu@fs.fed.us

Freya   Tan
(former FS employee)

Roland Gleisner
(same address as first inventor)
Phone: (608) 231-9426
rleisner@fs.fed.us

Last Modified: 2/24/2014