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.
Patent No.:
Date of Patent:
Nov. 10, 1992
Filed:
Jan. 22, 1992
Rene Alegre, Rueil Malmaison, FR;
Jacques L Alexandre, Les Sorinieres, FR;
Thierry M Barnavon, Bouguenais, FR;
Jean-Pierre N Baron, La Montagne, FR;
Jacques Cariou, Roven, FR;
Leon Debray, Noisy-le-Roi, FR;
L'Etat Francais, Paris, FR;
Ciments Lafarge, Saint-Cloud, FR;
Abstract
Method for analysis of the content of certain elements in a continuous flow of bulk materials by neutron bombardment and measurement of the gamma radiation emitted by such elements, which makes it possible to distinguish between the capture radiation and the activation radiation. The neutron source is a neutron-generating tube which is activated periodically. The signals from a single gamma radiation detector are considered only after neutron emission has ceased, during distinct intervals corresponding to the phenomena of capture and radiation of the activated elements, respectively. The respective signals are treated in two distinct measurement routes, and the measurements are then combined automatically. A third measurements route can be provided for gamma radiation resulting from inelastic collisions. The source and the detector are positioned in a probe lodged in a polyethylene protective tube within the flow of the materials. The installation is used to analyze large flows of minerals without taking samples, in the mining, cement, and aluminum industries.