Title

On-line analysis of ash containing slurries

Inventors

Surendra K. Kawatra
Lawrence L. Sutter, Michigan Technological UniversityFollow
Timothy C. Eisele, Michigan Technological UniversityFollow

Files

Abstract

The ash content of coal suspended in a slurry is determined by bombarding a sample of the slurry flowing past a window of a measuring chamber with radiation from an annular nucleonic source, such as Cm-244, for emitting radiation within the range of about 7 to about 30 KeV and causing the sample to emit both backscat- tered and iron fluorescent x-rays. These x-rays are detected by a radiation detector which produces first and second electrical signals representative of the intensity of each. The density of the sample flowing from the measuring chamber is measured, such as by a nucelonic density gauge, to produce an electrical signal representative of the density and the ash content is determined from the detected intensities of the backscattered and iron fluorescent x-rays and the sample density.

Patent Number

4,916,719

Assignee

Board of Control of Michigan Technological University, Houghton, Mich.

Application Number

203,323

Date Filed

6-7-1988

Certificate of Correction

Yes

Issue Date

4-10-1990

Comments

For the most up-to-date information about this patent, including the availability of Certificates of Correction, be sure to check the United States Patent and Trademark Office's free, publicly accessible database: Patent Public Search https://ppubs.uspto.gov/pubwebapp/static/pages/landing.html

Recommended Citation

Kawatra, Surendra K.; Sutter, Lawrence L.; and Eisele, Timothy C., "On-line analysis of ash containing slurries" (1990). Michigan Tech Patents. 56.
https://digitalcommons.mtu.edu/patents/56