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:
Jan. 08, 2019
Filed:
Nov. 25, 2014
Binder + CO Ag, Gleisdorf, AT;
Ernst Erwin Brunnmair, Graz, AT;
Binder + Co Ag, Gleisdorf, AT;
Abstract
The invention relates to an apparatus () for producing an expanded granulate from sand-grain-shaped material (), comprising a furnace () with a substantially vertically extending furnace shaft () and a feed device () arranged above or in the upper region of the furnace shaft () for feeding the sand-grain-shaped material () to the furnace shaft (). In order to achieve uniform expansion of the sand-grain-shaped material, the feed device () is formed to introduce the sand-grain-shaped material () in form of at least one downwardly falling curtain into the upper region of the furnace shaft (), wherein the drop section () of the curtain () lies in a decentralised, preferably peripheral region of the furnace shaft cross-section. The invention also relates to a method for producing an expanded granulate from sand-grain-shaped mineral material.