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:
Jul. 20, 1993
Filed:
Aug. 23, 1991
Alfred Roeder, Duisberg, DE;
Rudiger Oberste-Padtberg, Wuppertal, DE;
Dietrich Gruschka, Wulfrath, DE;
Dieter Opitz, Ratingen, DE;
Rheinische Kalksteinwerke GmbH, Wulfrath, DE;
Abstract
This invention relates to a process for the production of a usable or storable product with a low susceptibility to elutriation by water. This product is produced from residues containing halides obtained from a waste gas cleaning process. The halide containing residues as components of a crude dust having a CaO/SiO.sub.2 ratio between 1.7 and 3.4, are subjected to a thermal treatment to produce chlorosilicates. The waste gases formed during the thermal treatment for chlorosilicate production are subjected to a preliminary cleaning, and are then transported to the waste gas cleaning system of a refuse incineration plant. The residues occurring during the preliminary cleaning can be added to the crude dust.