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:
Jun. 15, 1982
Filed:
Oct. 29, 1980
Jozsef Matyasi, Budapest, HU;
Ferenc Toth, Almasfuzito-felso, HU;
Laszlo Revesz, Almasfuzito-felso, HU;
Benjaminne Toth, Almasfuzito-felso, HU;
Miklos Schlegel, Tata, HU;
Jozsef Zoldi, Budapest, HU;
Janosne Losonczi, Tata, HU;
Lajos Szoke, Almasfuzito-felso, HU;
Maria Orban nee Kelemen, Budapest, HU;
Magyar Aluminiumipari Troszt, Budapest, HU;
Abstract
The invention relates to a new method of reducing the organic substance content of alum earth production cycle performed according to the Bayer technology. By the method of the invention the majority of the organic substances present in the circulating lye can be removed easily and with only slight losses in sodium content. According to the invention one proceeds so that soda present in the hydrate wash and/or in the soda salt solution is caustified with lime, the solution is evaporated to reach a total sodium oxide concentration of 200 to 400 g/l, the precipitated solid is separated and removed from the system, and the liquid is recycled.