X-ray or gamma ray systems or devices – Photographic detector support – Dental
Patent
1986-03-27
1988-09-06
Howell, Janice A.
X-ray or gamma ray systems or devices
Photographic detector support
Dental
378 57, 378 53, G01N 2310
Patent
active
047698306
ABSTRACT:
An apparatus and method for measuring bulk density of solid particles. The apparatus is capable of simultaneously rotating and axially advancing a container containing a sample of solid particles past a source emitting a beam of gamma rays. The gamma rays are absorbed by a detector in proportion to the material density of the solid particles. The absorbed radiation is then compared to a preselected reference value to yield a bulk density for the material. This bulk density can then be used to ascertain the quantity of a binder which needs to be added to a homogeneous mass of coke to form a carbon anode useful in an electrolysis of alumina. The method includes the steps of placing a sample quantity of the solid particles in a container, optionally vibrating the container to settle the particles if desired, and then placing the container on the apparatus so as to be measured. The bulk density measurement is compared to a preselected reference value and this value is then visually displayed.
REFERENCES:
patent: 2843748 (1958-07-01), Jacobs
patent: 3531643 (1970-09-01), Bretonniere et al.
patent: 4133090 (1979-01-01), Peterson
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patent: 4429410 (1984-01-01), Jury et al.
"Correlation of Raw Material Properties with Binder Content of HS Soderberg Paste", by L. Castonguay and S. K. Nadkarni, Light Metals, 1984.
Texas Nuclear catalog entitled "SG Series Density Gauge".
Texas Nuclear catalog entitled "Instruction Manual-SGD & DMD-E-Zcal Density and Mass Flow System".
Hornack Thomas R.
Morian Donald C.
Peterson Richard W.
Aluminum Company of America
Connelly Thomas J.
Howell Janice A.
Porta David P.
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