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:
Sep. 03, 2019
Filed:
Feb. 14, 2019
Binder + CO Ag, Gleisdorf, AT;
Harald Tschernko, Gleisdorf, AT;
Markus Alfred Pusch, Graz, AT;
Bernhard Neukam, Stattegg, AT;
Ernst Erwin Brunnmair, Graz, AT;
Binder + Co AG, Gleisdorf, AT;
Abstract
The invention relates to a method for the expansion of sand grain-shaped raw material () in which the raw material () drops downwards through a substantially vertical heated shaft () provided with means () for forming a temperature profile (), in which a shaft flow () prevails wherein the raw material () expands as a result of heat transfer in the shaft () to form expanded granulate () and the granulate formed () is passed into a pneumatic conveying line () with a conveying flow () for further transport. In order to continuously check the quality of the expansion process, the bulk density of the expanded granulate () is measured continuously, wherein upon detecting a deviation from at least one defined bulk density, the temperature profile () in the shaft () is adapted automatically or manually and/or the feeding of raw material () into the shaft () is reduced automatically or manually.